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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE
// This is CodeMirror (https://codemirror.net), a code editor
// implemented in JavaScript on top of the browser's DOM.
//
// You can find some technical background for some of the code below
// at http://marijnhaverbeke.nl/blog/#cm-internals .
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global.CodeMirror = factory());
}(this, (function () {
'use strict';
// Kludges for bugs and behavior differences that can't be feature
// detected are enabled based on userAgent etc sniffing.
var userAgent = navigator.userAgent;
var platform = navigator.platform;
var gecko = /gecko\/\d/i.test(userAgent);
var ie_upto10 = /MSIE \d/.test(userAgent);
var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(userAgent);
var edge = /Edge\/(\d+)/.exec(userAgent);
var ie = ie_upto10 || ie_11up || edge;
var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1]);
var webkit = !edge && /WebKit\//.test(userAgent);
var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent);
var chrome = !edge && /Chrome\//.test(userAgent);
var presto = /Opera\//.test(userAgent);
var safari = /Apple Computer/.test(navigator.vendor);
var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(userAgent);
var phantom = /PhantomJS/.test(userAgent);
var ios = !edge && /AppleWebKit/.test(userAgent) && /Mobile\/\w+/.test(userAgent);
var android = /Android/.test(userAgent);
// This is woefully incomplete. Suggestions for alternative methods welcome.
var mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent);
var mac = ios || /Mac/.test(platform);
var chromeOS = /\bCrOS\b/.test(userAgent);
var windows = /win/i.test(platform);
var presto_version = presto && userAgent.match(/Version\/(\d*\.\d*)/);
if (presto_version) {
presto_version = Number(presto_version[1]);
}
if (presto_version && presto_version >= 15) {
presto = false;
webkit = true;
}
// Some browsers use the wrong event properties to signal cmd/ctrl on OS X
var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));
var captureRightClick = gecko || (ie && ie_version >= 9);
function classTest(cls) {
return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*")
}
var rmClass = function (node, cls) {
var current = node.className;
var match = classTest(cls).exec(current);
if (match) {
var after = current.slice(match.index + match[0].length);
node.className = current.slice(0, match.index) + (after ? match[1] + after : "");
}
};
function removeChildren(e) {
for (var count = e.childNodes.length; count > 0; --count) {
e.removeChild(e.firstChild);
}
return e
}
function removeChildrenAndAdd(parent, e) {
return removeChildren(parent).appendChild(e)
}
function elt(tag, content, className, style) {
var e = document.createElement(tag);
if (className) {
e.className = className;
}
if (style) {
e.style.cssText = style;
}
if (typeof content == "string") {
e.appendChild(document.createTextNode(content));
} else if (content) {
for (var i = 0; i < content.length; ++i) {
e.appendChild(content[i]);
}
}
return e
}
// wrapper for elt, which removes the elt from the accessibility tree
function eltP(tag, content, className, style) {
var e = elt(tag, content, className, style);
e.setAttribute("role", "presentation");
return e
}
var range;
if (document.createRange) {
range = function (node, start, end, endNode) {
var r = document.createRange();
r.setEnd(endNode || node, end);
r.setStart(node, start);
return r
};
} else {
range = function (node, start, end) {
var r = document.body.createTextRange();
try {
r.moveToElementText(node.parentNode);
} catch (e) {
return r
}
r.collapse(true);
r.moveEnd("character", end);
r.moveStart("character", start);
return r
};
}
function contains(parent, child) {
if (child.nodeType == 3) // Android browser always returns false when child is a textnode
{
child = child.parentNode;
}
if (parent.contains) {
return parent.contains(child)
}
do {
if (child.nodeType == 11) {
child = child.host;
}
if (child == parent) {
return true
}
} while (child = child.parentNode)
}
function activeElt() {
// IE and Edge may throw an "Unspecified Error" when accessing document.activeElement.
// IE < 10 will throw when accessed while the page is loading or in an iframe.
// IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable.
var activeElement;
try {
activeElement = document.activeElement;
} catch (e) {
activeElement = document.body || null;
}
while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement) {
activeElement = activeElement.shadowRoot.activeElement;
}
return activeElement
}
function addClass(node, cls) {
var current = node.className;
if (!classTest(cls).test(current)) {
node.className += (current ? " " : "") + cls;
}
}
function joinClasses(a, b) {
var as = a.split(" ");
for (var i = 0; i < as.length; i++) {
if (as[i] && !classTest(as[i]).test(b)) {
b += " " + as[i];
}
}
return b
}
var selectInput = function (node) {
node.select();
};
if (ios) // Mobile Safari apparently has a bug where select() is broken.
{
selectInput = function (node) {
node.selectionStart = 0;
node.selectionEnd = node.value.length;
};
} else if (ie) // Suppress mysterious IE10 errors
{
selectInput = function (node) {
try {
node.select();
} catch (_e) {}
};
}
function bind(f) {
var args = Array.prototype.slice.call(arguments, 1);
return function () {
return f.apply(null, args)
}
}
function copyObj(obj, target, overwrite) {
if (!target) {
target = {};
}
for (var prop in obj) {
if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop))) {
target[prop] = obj[prop];
}
}
return target
}
// Counts the column offset in a string, taking tabs into account.
// Used mostly to find indentation.
function countColumn(string, end, tabSize, startIndex, startValue) {
if (end == null) {
end = string.search(/[^\s\u00a0]/);
if (end == -1) {
end = string.length;
}
}
for (var i = startIndex || 0, n = startValue || 0;;) {
var nextTab = string.indexOf("\t", i);
if (nextTab < 0 || nextTab >= end) {
return n + (end - i)
}
n += nextTab - i;
n += tabSize - (n % tabSize);
i = nextTab + 1;
}
}
var Delayed = function () {
this.id = null;
};
Delayed.prototype.set = function (ms, f) {
clearTimeout(this.id);
this.id = setTimeout(f, ms);
};
function indexOf(array, elt) {
for (var i = 0; i < array.length; ++i) {
if (array[i] == elt) {
return i
}
}
return -1
}
// Number of pixels added to scroller and sizer to hide scrollbar
var scrollerGap = 30;
// Returned or thrown by various protocols to signal 'I'm not
// handling this'.
var Pass = {
toString: function () {
return "CodeMirror.Pass"
}
};
// Reused option objects for setSelection & friends
var sel_dontScroll = {
scroll: false
},
sel_mouse = {
origin: "*mouse"
},
sel_move = {
origin: "+move"
};
// The inverse of countColumn -- find the offset that corresponds to
// a particular column.
function findColumn(string, goal, tabSize) {
for (var pos = 0, col = 0;;) {
var nextTab = string.indexOf("\t", pos);
if (nextTab == -1) {
nextTab = string.length;
}
var skipped = nextTab - pos;
if (nextTab == string.length || col + skipped >= goal) {
return pos + Math.min(skipped, goal - col)
}
col += nextTab - pos;
col += tabSize - (col % tabSize);
pos = nextTab + 1;
if (col >= goal) {
return pos
}
}
}
var spaceStrs = [""];
function spaceStr(n) {
while (spaceStrs.length <= n) {
spaceStrs.push(lst(spaceStrs) + " ");
}
return spaceStrs[n]
}
function lst(arr) {
return arr[arr.length - 1]
}
function map(array, f) {
var out = [];
for (var i = 0; i < array.length; i++) {
out[i] = f(array[i], i);
}
return out
}
function insertSorted(array, value, score) {
var pos = 0,
priority = score(value);
while (pos < array.length && score(array[pos]) <= priority) {
pos++;
}
array.splice(pos, 0, value);
}
function nothing() {}
function createObj(base, props) {
var inst;
if (Object.create) {
inst = Object.create(base);
} else {
nothing.prototype = base;
inst = new nothing();
}
if (props) {
copyObj(props, inst);
}
return inst
}
var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
function isWordCharBasic(ch) {
return /\w/.test(ch) || ch > "\x80" &&
(ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch))
}
function isWordChar(ch, helper) {
if (!helper) {
return isWordCharBasic(ch)
}
if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) {
return true
}
return helper.test(ch)
}
function isEmpty(obj) {
for (var n in obj) {
if (obj.hasOwnProperty(n) && obj[n]) {
return false
}
}
return true
}
// Extending unicode characters. A series of a non-extending char +
// any number of extending chars is treated as a single unit as far
// as editing and measuring is concerned. This is not fully correct,
// since some scripts/fonts/browsers also treat other configurations
// of code points as a group.
var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/;
function isExtendingChar(ch) {
return ch.charCodeAt(0) >= 768 && extendingChars.test(ch)
}
// Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range.
function skipExtendingChars(str, pos, dir) {
while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) {
pos += dir;
}
return pos
}
// Returns the value from the range [`from`; `to`] that satisfies
// `pred` and is closest to `from`. Assumes that at least `to`
// satisfies `pred`. Supports `from` being greater than `to`.
function findFirst(pred, from, to) {
// At any point we are certain `to` satisfies `pred`, don't know
// whether `from` does.
var dir = from > to ? -1 : 1;
for (;;) {
if (from == to) {
return from
}
var midF = (from + to) / 2,
mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF);
if (mid == from) {
return pred(mid) ? from : to
}
if (pred(mid)) {
to = mid;
} else {
from = mid + dir;
}
}
}
// The display handles the DOM integration, both for input reading
// and content drawing. It holds references to DOM nodes and
// display-related state.
function Display(place, doc, input) {
var d = this;
this.input = input;
// Covers bottom-right square when both scrollbars are present.
d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
d.scrollbarFiller.setAttribute("cm-not-content", "true");
// Covers bottom of gutter when coverGutterNextToScrollbar is on
// and h scrollbar is present.
d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
d.gutterFiller.setAttribute("cm-not-content", "true");
// Will contain the actual code, positioned to cover the viewport.
d.lineDiv = eltP("div", null, "CodeMirror-code");
// Elements are added to these to represent selection and cursors.
d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
d.cursorDiv = elt("div", null, "CodeMirror-cursors");
// A visibility: hidden element used to find the size of things.
d.measure = elt("div", null, "CodeMirror-measure");
// When lines outside of the viewport are measured, they are drawn in this.
d.lineMeasure = elt("div", null, "CodeMirror-measure");
// Wraps everything that needs to exist inside the vertically-padded coordinate system
d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
null, "position: relative; outline: none");
var lines = eltP("div", [d.lineSpace], "CodeMirror-lines");
// Moved around its parent to cover visible view.
d.mover = elt("div", [lines], null, "position: relative");
// Set to the height of the document, allowing scrolling.
d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
d.sizerWidth = null;
// Behavior of elts with overflow: auto and padding is
// inconsistent across browsers. This is used to ensure the
// scrollable area is big enough.
d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;");
// Will contain the gutters, if any.
d.gutters = elt("div", null, "CodeMirror-gutters");
d.lineGutter = null;
// Actual scrollable element.
d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
d.scroller.setAttribute("tabIndex", "-1");
// The element in which the editor lives.
d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
// Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
if (ie && ie_version < 8) {
d.gutters.style.zIndex = -1;
d.scroller.style.paddingRight = 0;
}
if (!webkit && !(gecko && mobile)) {
d.scroller.draggable = true;
}
if (place) {
if (place.appendChild) {
place.appendChild(d.wrapper);
} else {
place(d.wrapper);
}
}
// Current rendered range (may be bigger than the view window).
d.viewFrom = d.viewTo = doc.first;
d.reportedViewFrom = d.reportedViewTo = doc.first;
// Information about the rendered lines.
d.view = [];
d.renderedView = null;
// Holds info about a single rendered line when it was rendered
// for measurement, while not in view.
d.externalMeasured = null;
// Empty space (in pixels) above the view
d.viewOffset = 0;
d.lastWrapHeight = d.lastWrapWidth = 0;
d.updateLineNumbers = null;
d.nativeBarWidth = d.barHeight = d.barWidth = 0;
d.scrollbarsClipped = false;
// Used to only resize the line number gutter when necessary (when
// the amount of lines crosses a boundary that makes its width change)
d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
// Set to true when a non-horizontal-scrolling line widget is
// added. As an optimization, line widget aligning is skipped when
// this is false.
d.alignWidgets = false;
d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
// Tracks the maximum line length so that the horizontal scrollbar
// can be kept static when scrolling.
d.maxLine = null;
d.maxLineLength = 0;
d.maxLineChanged = false;
// Used for measuring wheel scrolling granularity
d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;
// True when shift is held down.
d.shift = false;
// Used to track whether anything happened since the context menu
// was opened.
d.selForContextMenu = null;
d.activeTouch = null;
input.init(d);
}
// Find the line object corresponding to the given line number.
function getLine(doc, n) {
n -= doc.first;
if (n < 0 || n >= doc.size) {
throw new Error("There is no line " + (n + doc.first) + " in the document.")
}
var chunk = doc;
while (!chunk.lines) {
for (var i = 0;; ++i) {
var child = chunk.children[i],
sz = child.chunkSize();
if (n < sz) {
chunk = child;
break
}
n -= sz;
}
}
return chunk.lines[n]
}
// Get the part of a document between two positions, as an array of
// strings.
function getBetween(doc, start, end) {
var out = [],
n = start.line;
doc.iter(start.line, end.line + 1, function (line) {
var text = line.text;
if (n == end.line) {
text = text.slice(0, end.ch);
}
if (n == start.line) {
text = text.slice(start.ch);
}
out.push(text);
++n;
});
return out
}
// Get the lines between from and to, as array of strings.
function getLines(doc, from, to) {
var out = [];
doc.iter(from, to, function (line) {
out.push(line.text);
}); // iter aborts when callback returns truthy value
return out
}
// Update the height of a line, propagating the height change
// upwards to parent nodes.
function updateLineHeight(line, height) {
var diff = height - line.height;
if (diff) {
for (var n = line; n; n = n.parent) {
n.height += diff;
}
}
}
// Given a line object, find its line number by walking up through
// its parent links.
function lineNo(line) {
if (line.parent == null) {
return null
}
var cur = line.parent,
no = indexOf(cur.lines, line);
for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
for (var i = 0;; ++i) {
if (chunk.children[i] == cur) {
break
}
no += chunk.children[i].chunkSize();
}
}
return no + cur.first
}
// Find the line at the given vertical position, using the height
// information in the document tree.
function lineAtHeight(chunk, h) {
var n = chunk.first;
outer: do {
for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) {
var child = chunk.children[i$1],
ch = child.height;
if (h < ch) {
chunk = child;
continue outer
}
h -= ch;
n += child.chunkSize();
}
return n
} while (!chunk.lines)
var i = 0;
for (; i < chunk.lines.length; ++i) {
var line = chunk.lines[i],
lh = line.height;
if (h < lh) {
break
}
h -= lh;
}
return n + i
}
function isLine(doc, l) {
return l >= doc.first && l < doc.first + doc.size
}
function lineNumberFor(options, i) {
return String(options.lineNumberFormatter(i + options.firstLineNumber))
}
// A Pos instance represents a position within the text.
function Pos(line, ch, sticky) {
if (sticky === void 0) sticky = null;
if (!(this instanceof Pos)) {
return new Pos(line, ch, sticky)
}
this.line = line;
this.ch = ch;
this.sticky = sticky;
}
// Compare two positions, return 0 if they are the same, a negative
// number when a is less, and a positive number otherwise.
function cmp(a, b) {
return a.line - b.line || a.ch - b.ch
}
function equalCursorPos(a, b) {
return a.sticky == b.sticky && cmp(a, b) == 0
}
function copyPos(x) {
return Pos(x.line, x.ch)
}
function maxPos(a, b) {
return cmp(a, b) < 0 ? b : a
}
function minPos(a, b) {
return cmp(a, b) < 0 ? a : b
}
// Most of the external API clips given positions to make sure they
// actually exist within the document.
function clipLine(doc, n) {
return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))
}
function clipPos(doc, pos) {
if (pos.line < doc.first) {
return Pos(doc.first, 0)
}
var last = doc.first + doc.size - 1;
if (pos.line > last) {
return Pos(last, getLine(doc, last).text.length)
}
return clipToLen(pos, getLine(doc, pos.line).text.length)
}
function clipToLen(pos, linelen) {
var ch = pos.ch;
if (ch == null || ch > linelen) {
return Pos(pos.line, linelen)
} else if (ch < 0) {
return Pos(pos.line, 0)
} else {
return pos
}
}
function clipPosArray(doc, array) {
var out = [];
for (var i = 0; i < array.length; i++) {
out[i] = clipPos(doc, array[i]);
}
return out
}
// Optimize some code when these features are not used.
var sawReadOnlySpans = false,
sawCollapsedSpans = false;
function seeReadOnlySpans() {
sawReadOnlySpans = true;
}
function seeCollapsedSpans() {
sawCollapsedSpans = true;
}
// TEXTMARKER SPANS
function MarkedSpan(marker, from, to) {
this.marker = marker;
this.from = from;
this.to = to;
}
// Search an array of spans for a span matching the given marker.
function getMarkedSpanFor(spans, marker) {
if (spans) {
for (var i = 0; i < spans.length; ++i) {
var span = spans[i];
if (span.marker == marker) {
return span
}
}
}
}
// Remove a span from an array, returning undefined if no spans are
// left (we don't store arrays for lines without spans).
function removeMarkedSpan(spans, span) {
var r;
for (var i = 0; i < spans.length; ++i) {
if (spans[i] != span) {
(r || (r = [])).push(spans[i]);
}
}
return r
}
// Add a span to a line.
function addMarkedSpan(line, span) {
line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
span.marker.attachLine(line);
}
// Used for the algorithm that adjusts markers for a change in the
// document. These functions cut an array of spans at a given
// character position, returning an array of remaining chunks (or
// undefined if nothing remains).
function markedSpansBefore(old, startCh, isInsert) {
var nw;
if (old) {
for (var i = 0; i < old.length; ++i) {
var span = old[i],
marker = span.marker;
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));
}
}
}
return nw
}
function markedSpansAfter(old, endCh, isInsert) {
var nw;
if (old) {
for (var i = 0; i < old.length; ++i) {
var span = old[i],
marker = span.marker;
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
span.to == null ? null : span.to - endCh));
}
}
}
return nw
}
// Given a change object, compute the new set of marker spans that
// cover the line in which the change took place. Removes spans
// entirely within the change, reconnects spans belonging to the
// same marker that appear on both sides of the change, and cuts off
// spans partially within the change. Returns an array of span
// arrays with one element for each line in (after) the change.
function stretchSpansOverChange(doc, change) {
if (change.full) {
return null
}
var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
if (!oldFirst && !oldLast) {
return null
}
var startCh = change.from.ch,
endCh = change.to.ch,
isInsert = cmp(change.from, change.to) == 0;
// Get the spans that 'stick out' on both sides
var first = markedSpansBefore(oldFirst, startCh, isInsert);
var last = markedSpansAfter(oldLast, endCh, isInsert);
// Next, merge those two ends
var sameLine = change.text.length == 1,
offset = lst(change.text).length + (sameLine ? startCh : 0);
if (first) {
// Fix up .to properties of first
for (var i = 0; i < first.length; ++i) {
var span = first[i];
if (span.to == null) {
var found = getMarkedSpanFor(last, span.marker);
if (!found) {
span.to = startCh;
} else if (sameLine) {
span.to = found.to == null ? null : found.to + offset;
}
}
}
}
if (last) {
// Fix up .from in last (or move them into first in case of sameLine)
for (var i$1 = 0; i$1 < last.length; ++i$1) {
var span$1 = last[i$1];
if (span$1.to != null) {
span$1.to += offset;
}
if (span$1.from == null) {
var found$1 = getMarkedSpanFor(first, span$1.marker);
if (!found$1) {
span$1.from = offset;
if (sameLine) {
(first || (first = [])).push(span$1);
}
}
} else {
span$1.from += offset;
if (sameLine) {
(first || (first = [])).push(span$1);
}
}
}
}
// Make sure we didn't create any zero-length spans
if (first) {
first = clearEmptySpans(first);
}
if (last && last != first) {
last = clearEmptySpans(last);
}
var newMarkers = [first];
if (!sameLine) {
// Fill gap with whole-line-spans
var gap = change.text.length - 2,
gapMarkers;
if (gap > 0 && first) {
for (var i$2 = 0; i$2 < first.length; ++i$2) {
if (first[i$2].to == null) {
(gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null));
}
}
}
for (var i$3 = 0; i$3 < gap; ++i$3) {
newMarkers.push(gapMarkers);
}
newMarkers.push(last);
}
return newMarkers
}
// Remove spans that are empty and don't have a clearWhenEmpty
// option of false.
function clearEmptySpans(spans) {
for (var i = 0; i < spans.length; ++i) {
var span = spans[i];
if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false) {
spans.splice(i--, 1);
}
}
if (!spans.length) {
return null
}
return spans
}
// Used to 'clip' out readOnly ranges when making a change.
function removeReadOnlyRanges(doc, from, to) {
var markers = null;
doc.iter(from.line, to.line + 1, function (line) {
if (line.markedSpans) {
for (var i = 0; i < line.markedSpans.length; ++i) {
var mark = line.markedSpans[i].marker;
if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) {
(markers || (markers = [])).push(mark);
}
}
}
});
if (!markers) {
return null
}
var parts = [{
from: from,
to: to
}];
for (var i = 0; i < markers.length; ++i) {
var mk = markers[i],
m = mk.find(0);
for (var j = 0; j < parts.length; ++j) {
var p = parts[j];
if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) {
continue
}
var newParts = [j, 1],
dfrom = cmp(p.from, m.from),
dto = cmp(p.to, m.to);
if (dfrom < 0 || !mk.inclusiveLeft && !dfrom) {
newParts.push({
from: p.from,
to: m.from
});
}
if (dto > 0 || !mk.inclusiveRight && !dto) {
newParts.push({
from: m.to,
to: p.to
});
}
parts.splice.apply(parts, newParts);
j += newParts.length - 3;
}
}
return parts
}
// Connect or disconnect spans from a line.
function detachMarkedSpans(line) {
var spans = line.markedSpans;
if (!spans) {
return
}
for (var i = 0; i < spans.length; ++i) {
spans[i].marker.detachLine(line);
}
line.markedSpans = null;
}
function attachMarkedSpans(line, spans) {
if (!spans) {
return
}
for (var i = 0; i < spans.length; ++i) {
spans[i].marker.attachLine(line);
}
line.markedSpans = spans;
}
// Helpers used when computing which overlapping collapsed span
// counts as the larger one.
function extraLeft(marker) {
return marker.inclusiveLeft ? -1 : 0
}
function extraRight(marker) {
return marker.inclusiveRight ? 1 : 0
}
// Returns a number indicating which of two overlapping collapsed
// spans is larger (and thus includes the other). Falls back to
// comparing ids when the spans cover exactly the same range.
function compareCollapsedMarkers(a, b) {
var lenDiff = a.lines.length - b.lines.length;
if (lenDiff != 0) {
return lenDiff
}
var aPos = a.find(),
bPos = b.find();
var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);
if (fromCmp) {
return -fromCmp
}
var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);
if (toCmp) {
return toCmp
}
return b.id - a.id
}
// Find out whether a line ends or starts in a collapsed span. If
// so, return the marker for that span.
function collapsedSpanAtSide(line, start) {
var sps = sawCollapsedSpans && line.markedSpans,
found;
if (sps) {
for (var sp = (void 0), i = 0; i < sps.length; ++i) {
sp = sps[i];
if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
(!found || compareCollapsedMarkers(found, sp.marker) < 0)) {
found = sp.marker;
}
}
}
return found
}
function collapsedSpanAtStart(line) {
return collapsedSpanAtSide(line, true)
}
function collapsedSpanAtEnd(line) {
return collapsedSpanAtSide(line, false)
}
function collapsedSpanAround(line, ch) {
var sps = sawCollapsedSpans && line.markedSpans,
found;
if (sps) {
for (var i = 0; i < sps.length; ++i) {
var sp = sps[i];
if (sp.marker.collapsed && (sp.from == null || sp.from < ch) && (sp.to == null || sp.to > ch) &&
(!found || compareCollapsedMarkers(found, sp.marker) < 0)) {
found = sp.marker;
}
}
}
return found
}
// Test whether there exists a collapsed span that partially
// overlaps (covers the start or end, but not both) of a new span.
// Such overlap is not allowed.
function conflictingCollapsedRange(doc, lineNo$$1, from, to, marker) {
var line = getLine(doc, lineNo$$1);
var sps = sawCollapsedSpans && line.markedSpans;
if (sps) {
for (var i = 0; i < sps.length; ++i) {
var sp = sps[i];
if (!sp.marker.collapsed) {
continue
}
var found = sp.marker.find(0);
var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);
var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);
if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) {
continue
}
if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) ||
fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0)) {
return true
}
}
}
}
// A visual line is a line as drawn on the screen. Folding, for
// example, can cause multiple logical lines to appear on the same
// visual line. This finds the start of the visual line that the
// given line is part of (usually that is the line itself).
function visualLine(line) {
var merged;
while (merged = collapsedSpanAtStart(line)) {
line = merged.find(-1, true).line;
}
return line
}
function visualLineEnd(line) {
var merged;
while (merged = collapsedSpanAtEnd(line)) {
line = merged.find(1, true).line;
}
return line
}
// Returns an array of logical lines that continue the visual line
// started by the argument, or undefined if there are no such lines.
function visualLineContinued(line) {
var merged, lines;
while (merged = collapsedSpanAtEnd(line)) {
line = merged.find(1, true).line;
(lines || (lines = [])).push(line);
}
return lines
}
// Get the line number of the start of the visual line that the
// given line number is part of.
function visualLineNo(doc, lineN) {
var line = getLine(doc, lineN),
vis = visualLine(line);
if (line == vis) {
return lineN
}
return lineNo(vis)
}
// Get the line number of the start of the next visual line after
// the given line.
function visualLineEndNo(doc, lineN) {
if (lineN > doc.lastLine()) {
return lineN
}
var line = getLine(doc, lineN),
merged;
if (!lineIsHidden(doc, line)) {
return lineN
}
while (merged = collapsedSpanAtEnd(line)) {
line = merged.find(1, true).line;
}
return lineNo(line) + 1
}
// Compute whether a line is hidden. Lines count as hidden when they
// are part of a visual line that starts with another line, or when
// they are entirely covered by collapsed, non-widget span.
function lineIsHidden(doc, line) {
var sps = sawCollapsedSpans && line.markedSpans;
if (sps) {
for (var sp = (void 0), i = 0; i < sps.length; ++i) {
sp = sps[i];
if (!sp.marker.collapsed) {
continue
}
if (sp.from == null) {
return true
}
if (sp.marker.widgetNode) {
continue
}
if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) {
return true
}
}
}
}
function lineIsHiddenInner(doc, line, span) {
if (span.to == null) {
var end = span.marker.find(1, true);
return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker))
}
if (span.marker.inclusiveRight && span.to == line.text.length) {
return true
}
for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) {
sp = line.markedSpans[i];
if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
(sp.to == null || sp.to != span.from) &&
(sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
lineIsHiddenInner(doc, line, sp)) {
return true
}
}
}
// Find the height above the given line.
function heightAtLine(lineObj) {
lineObj = visualLine(lineObj);
var h = 0,
chunk = lineObj.parent;
for (var i = 0; i < chunk.lines.length; ++i) {
var line = chunk.lines[i];
if (line == lineObj) {
break
} else {
h += line.height;
}
}
for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
for (var i$1 = 0; i$1 < p.children.length; ++i$1) {
var cur = p.children[i$1];
if (cur == chunk) {
break
} else {
h += cur.height;
}
}
}
return h
}
// Compute the character length of a line, taking into account
// collapsed ranges (see markText) that might hide parts, and join
// other lines onto it.
function lineLength(line) {
if (line.height == 0) {
return 0
}
var len = line.text.length,
merged, cur = line;
while (merged = collapsedSpanAtStart(cur)) {
var found = merged.find(0, true);
cur = found.from.line;
len += found.from.ch - found.to.ch;
}
cur = line;
while (merged = collapsedSpanAtEnd(cur)) {
var found$1 = merged.find(0, true);
len -= cur.text.length - found$1.from.ch;
cur = found$1.to.line;
len += cur.text.length - found$1.to.ch;
}
return len
}
// Find the longest line in the document.
function findMaxLine(cm) {
var d = cm.display,
doc = cm.doc;
d.maxLine = getLine(doc, doc.first);
d.maxLineLength = lineLength(d.maxLine);
d.maxLineChanged = true;
doc.iter(function (line) {
var len = lineLength(line);
if (len > d.maxLineLength) {
d.maxLineLength = len;
d.maxLine = line;
}
});
}
// BIDI HELPERS
function iterateBidiSections(order, from, to, f) {
if (!order) {
return f(from, to, "ltr", 0)
}
var found = false;
for (var i = 0; i < order.length; ++i) {
var part = order[i];
if (part.from < to && part.to > from || from == to && part.to == from) {
f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr", i);
found = true;
}
}
if (!found) {
f(from, to, "ltr");
}
}
var bidiOther = null;
function getBidiPartAt(order, ch, sticky) {
var found;
bidiOther = null;
for (var i = 0; i < order.length; ++i) {
var cur = order[i];
if (cur.from < ch && cur.to > ch) {
return i
}
if (cur.to == ch) {
if (cur.from != cur.to && sticky == "before") {
found = i;
} else {
bidiOther = i;
}
}
if (cur.from == ch) {
if (cur.from != cur.to && sticky != "before") {
found = i;
} else {
bidiOther = i;
}
}
}
return found != null ? found : bidiOther
}
// Bidirectional ordering algorithm
// See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
// that this (partially) implements.
// One-char codes used for character types:
// L (L): Left-to-Right
// R (R): Right-to-Left
// r (AL): Right-to-Left Arabic
// 1 (EN): European Number
// + (ES): European Number Separator
// % (ET): European Number Terminator
// n (AN): Arabic Number
// , (CS): Common Number Separator
// m (NSM): Non-Spacing Mark
// b (BN): Boundary Neutral
// s (B): Paragraph Separator
// t (S): Segment Separator
// w (WS): Whitespace
// N (ON): Other Neutrals
// Returns null if characters are ordered as they appear
// (left-to-right), or an array of sections ({from, to, level}
// objects) in the order in which they occur visually.
var bidiOrdering = (function () {
// Character types for codepoints 0 to 0xff
var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
// Character types for codepoints 0x600 to 0x6f9
var arabicTypes = "nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111";
function charType(code) {
if (code <= 0xf7) {
return lowTypes.charAt(code)
} else if (0x590 <= code && code <= 0x5f4) {
return "R"
} else if (0x600 <= code && code <= 0x6f9) {
return arabicTypes.charAt(code - 0x600)
} else if (0x6ee <= code && code <= 0x8ac) {
return "r"
} else if (0x2000 <= code && code <= 0x200b) {
return "w"
} else if (code == 0x200c) {
return "b"
} else {
return "L"
}
}
var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
var isNeutral = /[stwN]/,
isStrong = /[LRr]/,
countsAsLeft = /[Lb1n]/,
countsAsNum = /[1n]/;
function BidiSpan(level, from, to) {
this.level = level;
this.from = from;
this.to = to;
}
return function (str, direction) {
var outerType = direction == "ltr" ? "L" : "R";
if (str.length == 0 || direction == "ltr" && !bidiRE.test(str)) {
return false
}
var len = str.length,
types = [];
for (var i = 0; i < len; ++i) {
types.push(charType(str.charCodeAt(i)));
}
// W1. Examine each non-spacing mark (NSM) in the level run, and
// change the type of the NSM to the type of the previous
// character. If the NSM is at the start of the level run, it will
// get the type of sor.
for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) {
var type = types[i$1];
if (type == "m") {
types[i$1] = prev;
} else {
prev = type;
}
}
// W2. Search backwards from each instance of a European number
// until the first strong type (R, L, AL, or sor) is found. If an
// AL is found, change the type of the European number to Arabic
// number.
// W3. Change all ALs to R.
for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) {
var type$1 = types[i$2];
if (type$1 == "1" && cur == "r") {
types[i$2] = "n";
} else if (isStrong.test(type$1)) {
cur = type$1;
if (type$1 == "r") {
types[i$2] = "R";
}
}
}
// W4. A single European separator between two European numbers
// changes to a European number. A single common separator between
// two numbers of the same type changes to that type.
for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) {
var type$2 = types[i$3];
if (type$2 == "+" && prev$1 == "1" && types[i$3 + 1] == "1") {
types[i$3] = "1";
} else if (type$2 == "," && prev$1 == types[i$3 + 1] &&
(prev$1 == "1" || prev$1 == "n")) {
types[i$3] = prev$1;
}
prev$1 = type$2;
}
// W5. A sequence of European terminators adjacent to European
// numbers changes to all European numbers.
// W6. Otherwise, separators and terminators change to Other
// Neutral.
for (var i$4 = 0; i$4 < len; ++i$4) {
var type$3 = types[i$4];
if (type$3 == ",") {
types[i$4] = "N";
} else if (type$3 == "%") {
var end = (void 0);
for (end = i$4 + 1; end < len && types[end] == "%"; ++end) {}
var replace = (i$4 && types[i$4 - 1] == "!") || (end < len && types[end] == "1") ? "1" : "N";
for (var j = i$4; j < end; ++j) {
types[j] = replace;
}
i$4 = end - 1;
}
}
// W7. Search backwards from each instance of a European number
// until the first strong type (R, L, or sor) is found. If an L is
// found, then change the type of the European number to L.
for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) {
var type$4 = types[i$5];
if (cur$1 == "L" && type$4 == "1") {
types[i$5] = "L";
} else if (isStrong.test(type$4)) {
cur$1 = type$4;
}
}
// N1. A sequence of neutrals takes the direction of the
// surrounding strong text if the text on both sides has the same
// direction. European and Arabic numbers act as if they were R in
// terms of their influence on neutrals. Start-of-level-run (sor)
// and end-of-level-run (eor) are used at level run boundaries.
// N2. Any remaining neutrals take the embedding direction.
for (var i$6 = 0; i$6 < len; ++i$6) {
if (isNeutral.test(types[i$6])) {
var end$1 = (void 0);
for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {}
var before = (i$6 ? types[i$6 - 1] : outerType) == "L";
var after = (end$1 < len ? types[end$1] : outerType) == "L";
var replace$1 = before == after ? (before ? "L" : "R") : outerType;
for (var j$1 = i$6; j$1 < end$1; ++j$1) {
types[j$1] = replace$1;
}
i$6 = end$1 - 1;
}
}
// Here we depart from the documented algorithm, in order to avoid
// building up an actual levels array. Since there are only three
// levels (0, 1, 2) in an implementation that doesn't take
// explicit embedding into account, we can build up the order on
// the fly, without following the level-based algorithm.
var order = [],
m;
for (var i$7 = 0; i$7 < len;) {
if (countsAsLeft.test(types[i$7])) {
var start = i$7;
for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {}
order.push(new BidiSpan(0, start, i$7));
} else {
var pos = i$7,
at = order.length;
for (++i$7; i$7 < len && types[i$7] != "L"; ++i$7) {}
for (var j$2 = pos; j$2 < i$7;) {
if (countsAsNum.test(types[j$2])) {
if (pos < j$2) {
order.splice(at, 0, new BidiSpan(1, pos, j$2));
}
var nstart = j$2;
for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {}
order.splice(at, 0, new BidiSpan(2, nstart, j$2));
pos = j$2;
} else {
++j$2;
}
}
if (pos < i$7) {
order.splice(at, 0, new BidiSpan(1, pos, i$7));
}
}
}
if (direction == "ltr") {
if (order[0].level == 1 && (m = str.match(/^\s+/))) {
order[0].from = m[0].length;
order.unshift(new BidiSpan(0, 0, m[0].length));
}
if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
lst(order).to -= m[0].length;
order.push(new BidiSpan(0, len - m[0].length, len));
}
}
return direction == "rtl" ? order.reverse() : order
}
})();
// Get the bidi ordering for the given line (and cache it). Returns
// false for lines that are fully left-to-right, and an array of
// BidiSpan objects otherwise.
function getOrder(line, direction) {
var order = line.order;
if (order == null) {
order = line.order = bidiOrdering(line.text, direction);
}
return order
}
// EVENT HANDLING
// Lightweight event framework. on/off also work on DOM nodes,
// registering native DOM handlers.
var noHandlers = [];
var on = function (emitter, type, f) {
if (emitter.addEventListener) {
emitter.addEventListener(type, f, false);
} else if (emitter.attachEvent) {
emitter.attachEvent("on" + type, f);
} else {
var map$$1 = emitter._handlers || (emitter._handlers = {});
map$$1[type] = (map$$1[type] || noHandlers).concat(f);
}
};
function getHandlers(emitter, type) {
return emitter._handlers && emitter._handlers[type] || noHandlers
}
function off(emitter, type, f) {
if (emitter.removeEventListener) {
emitter.removeEventListener(type, f, false);
} else if (emitter.detachEvent) {
emitter.detachEvent("on" + type, f);
} else {
var map$$1 = emitter._handlers,
arr = map$$1 && map$$1[type];
if (arr) {
var index = indexOf(arr, f);
if (index > -1) {
map$$1[type] = arr.slice(0, index).concat(arr.slice(index + 1));
}
}
}
}
function signal(emitter, type /*, values...*/ ) {
var handlers = getHandlers(emitter, type);
if (!handlers.length) {
return
}
var args = Array.prototype.slice.call(arguments, 2);
for (var i = 0; i < handlers.length; ++i) {
handlers[i].apply(null, args);
}
}
// The DOM events that CodeMirror handles can be overridden by
// registering a (non-DOM) handler on the editor for the event name,
// and preventDefault-ing the event in that handler.
function signalDOMEvent(cm, e, override) {
if (typeof e == "string") {
e = {
type: e,
preventDefault: function () {
this.defaultPrevented = true;
}
};
}
signal(cm, override || e.type, cm, e);
return e_defaultPrevented(e) || e.codemirrorIgnore
}
function signalCursorActivity(cm) {
var arr = cm._handlers && cm._handlers.cursorActivity;
if (!arr) {
return
}
var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);
for (var i = 0; i < arr.length; ++i) {
if (indexOf(set, arr[i]) == -1) {
set.push(arr[i]);
}
}
}
function hasHandler(emitter, type) {
return getHandlers(emitter, type).length > 0
}
// Add on and off methods to a constructor's prototype, to make
// registering events on such objects more convenient.
function eventMixin(ctor) {
ctor.prototype.on = function (type, f) {
on(this, type, f);
};
ctor.prototype.off = function (type, f) {
off(this, type, f);
};
}
// Due to the fact that we still support jurassic IE versions, some
// compatibility wrappers are needed.
function e_preventDefault(e) {
if (e.preventDefault) {
e.preventDefault();
} else {
e.returnValue = false;
}
}
function e_stopPropagation(e) {
if (e.stopPropagation) {
e.stopPropagation();
} else {
e.cancelBubble = true;
}
}
function e_defaultPrevented(e) {
return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false
}
function e_stop(e) {
e_preventDefault(e);
e_stopPropagation(e);
}
function e_target(e) {
return e.target || e.srcElement
}
function e_button(e) {
var b = e.which;
if (b == null) {
if (e.button & 1) {
b = 1;
} else if (e.button & 2) {
b = 3;
} else if (e.button & 4) {
b = 2;
}
}
if (mac && e.ctrlKey && b == 1) {
b = 3;
}
return b
}
// Detect drag-and-drop
var dragAndDrop = function () {
// There is *some* kind of drag-and-drop support in IE6-8, but I
// couldn't get it to work yet.
if (ie && ie_version < 9) {
return false
}
var div = elt('div');
return "draggable" in div || "dragDrop" in div
}();
var zwspSupported;
function zeroWidthElement(measure) {
if (zwspSupported == null) {
var test = elt("span", "\u200b");
removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
if (measure.firstChild.offsetHeight != 0) {
zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8);
}
}
var node = zwspSupported ? elt("span", "\u200b") :
elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
node.setAttribute("cm-text", "");
return node
}
// Feature-detect IE's crummy client rect reporting for bidi text
var badBidiRects;
function hasBadBidiRects(measure) {
if (badBidiRects != null) {
return badBidiRects
}
var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
var r0 = range(txt, 0, 1).getBoundingClientRect();
var r1 = range(txt, 1, 2).getBoundingClientRect();
removeChildren(measure);
if (!r0 || r0.left == r0.right) {
return false
} // Safari returns null in some cases (#2780)
return badBidiRects = (r1.right - r0.right < 3)
}
// See if "".split is the broken IE version, if so, provide an
// alternative way to split lines.
var splitLinesAuto = "\n\nb".split(/\n/).length != 3 ? function (string) {
var pos = 0,
result = [],
l = string.length;
while (pos <= l) {
var nl = string.indexOf("\n", pos);
if (nl == -1) {
nl = string.length;
}
var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
var rt = line.indexOf("\r");
if (rt != -1) {
result.push(line.slice(0, rt));
pos += rt + 1;
} else {
result.push(line);
pos = nl + 1;
}
}
return result
} : function (string) {
return string.split(/\r\n?|\n/);
};
var hasSelection = window.getSelection ? function (te) {
try {
return te.selectionStart != te.selectionEnd
} catch (e) {
return false
}
} : function (te) {
var range$$1;
try {
range$$1 = te.ownerDocument.selection.createRange();
} catch (e) {}
if (!range$$1 || range$$1.parentElement() != te) {
return false
}
return range$$1.compareEndPoints("StartToEnd", range$$1) != 0
};
var hasCopyEvent = (function () {
var e = elt("div");
if ("oncopy" in e) {
return true
}
e.setAttribute("oncopy", "return;");
return typeof e.oncopy == "function"
})();
var badZoomedRects = null;
function hasBadZoomedRects(measure) {
if (badZoomedRects != null) {
return badZoomedRects
}
var node = removeChildrenAndAdd(measure, elt("span", "x"));
var normal = node.getBoundingClientRect();
var fromRange = range(node, 0, 1).getBoundingClientRect();
return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1
}
// Known modes, by name and by MIME
var modes = {},
mimeModes = {};
// Extra arguments are stored as the mode's dependencies, which is
// used by (legacy) mechanisms like loadmode.js to automatically
// load a mode. (Preferred mechanism is the require/define calls.)
function defineMode(name, mode) {
if (arguments.length > 2) {
mode.dependencies = Array.prototype.slice.call(arguments, 2);
}
modes[name] = mode;
}
function defineMIME(mime, spec) {
mimeModes[mime] = spec;
}
// Given a MIME type, a {name, ...options} config object, or a name
// string, return a mode config object.
function resolveMode(spec) {
if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
spec = mimeModes[spec];
} else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
var found = mimeModes[spec.name];
if (typeof found == "string") {
found = {
name: found
};
}
spec = createObj(found, spec);
spec.name = found.name;
} else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
return resolveMode("application/xml")
} else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) {
return resolveMode("application/json")
}
if (typeof spec == "string") {
return {
name: spec
}
} else {
return spec || {
name: "null"
}
}
}
// Given a mode spec (anything that resolveMode accepts), find and
// initialize an actual mode object.
function getMode(options, spec) {
spec = resolveMode(spec);
var mfactory = modes[spec.name];
if (!mfactory) {
return getMode(options, "text/plain")
}
var modeObj = mfactory(options, spec);
if (modeExtensions.hasOwnProperty(spec.name)) {
var exts = modeExtensions[spec.name];
for (var prop in exts) {
if (!exts.hasOwnProperty(prop)) {
continue
}
if (modeObj.hasOwnProperty(prop)) {
modeObj["_" + prop] = modeObj[prop];
}
modeObj[prop] = exts[prop];
}
}
modeObj.name = spec.name;
if (spec.helperType) {
modeObj.helperType = spec.helperType;
}
if (spec.modeProps) {
for (var prop$1 in spec.modeProps) {
modeObj[prop$1] = spec.modeProps[prop$1];
}
}
return modeObj
}
// This can be used to attach properties to mode objects from
// outside the actual mode definition.
var modeExtensions = {};
function extendMode(mode, properties) {
var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
copyObj(properties, exts);
}
function copyState(mode, state) {
if (state === true) {
return state
}
if (mode.copyState) {
return mode.copyState(state)
}
var nstate = {};
for (var n in state) {
var val = state[n];
if (val instanceof Array) {
val = val.concat([]);
}
nstate[n] = val;
}
return nstate
}
// Given a mode and a state (for that mode), find the inner mode and
// state at the position that the state refers to.
function innerMode(mode, state) {
var info;
while (mode.innerMode) {
info = mode.innerMode(state);
if (!info || info.mode == mode) {
break
}
state = info.state;
mode = info.mode;
}
return info || {
mode: mode,
state: state
}
}
function startState(mode, a1, a2) {
return mode.startState ? mode.startState(a1, a2) : true
}
// STRING STREAM
// Fed to the mode parsers, provides helper functions to make
// parsers more succinct.
var StringStream = function (string, tabSize, lineOracle) {
this.pos = this.start = 0;
this.string = string;
this.tabSize = tabSize || 8;
this.lastColumnPos = this.lastColumnValue = 0;
this.lineStart = 0;
this.lineOracle = lineOracle;
};
StringStream.prototype.eol = function () {
return this.pos >= this.string.length
};
StringStream.prototype.sol = function () {
return this.pos == this.lineStart
};
StringStream.prototype.peek = function () {
return this.string.charAt(this.pos) || undefined
};
StringStream.prototype.next = function () {
if (this.pos < this.string.length) {
return this.string.charAt(this.pos++)
}
};
StringStream.prototype.eat = function (match) {
var ch = this.string.charAt(this.pos);
var ok;
if (typeof match == "string") {
ok = ch == match;
} else {
ok = ch && (match.test ? match.test(ch) : match(ch));
}
if (ok) {
++this.pos;
return ch
}
};
StringStream.prototype.eatWhile = function (match) {
var start = this.pos;
while (this.eat(match)) {}
return this.pos > start
};
StringStream.prototype.eatSpace = function () {
var this$1 = this;
var start = this.pos;
while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) {
++this$1.pos;
}
return this.pos > start
};
StringStream.prototype.skipToEnd = function () {
this.pos = this.string.length;
};
StringStream.prototype.skipTo = function (ch) {
var found = this.string.indexOf(ch, this.pos);
if (found > -1) {
this.pos = found;
return true
}
};
StringStream.prototype.backUp = function (n) {
this.pos -= n;
};
StringStream.prototype.column = function () {
if (this.lastColumnPos < this.start) {
this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
this.lastColumnPos = this.start;
}
return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
};
StringStream.prototype.indentation = function () {
return countColumn(this.string, null, this.tabSize) -
(this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
};
StringStream.prototype.match = function (pattern, consume, caseInsensitive) {
if (typeof pattern == "string") {
var cased = function (str) {
return caseInsensitive ? str.toLowerCase() : str;
};
var substr = this.string.substr(this.pos, pattern.length);
if (cased(substr) == cased(pattern)) {
if (consume !== false) {
this.pos += pattern.length;
}
return true
}
} else {
var match = this.string.slice(this.pos).match(pattern);
if (match && match.index > 0) {
return null
}
if (match && consume !== false) {
this.pos += match[0].length;
}
return match
}
};
StringStream.prototype.current = function () {
return this.string.slice(this.start, this.pos)
};
StringStream.prototype.hideFirstChars = function (n, inner) {
this.lineStart += n;
try {
return inner()
} finally {
this.lineStart -= n;
}
};
StringStream.prototype.lookAhead = function (n) {
var oracle = this.lineOracle;
return oracle && oracle.lookAhead(n)
};
StringStream.prototype.baseToken = function () {
var oracle = this.lineOracle;
return oracle && oracle.baseToken(this.pos)
};
var SavedContext = function (state, lookAhead) {
this.state = state;
this.lookAhead = lookAhead;
};
var Context = function (doc, state, line, lookAhead) {
this.state = state;
this.doc = doc;
this.line = line;
this.maxLookAhead = lookAhead || 0;
this.baseTokens = null;
this.baseTokenPos = 1;
};
Context.prototype.lookAhead = function (n) {
var line = this.doc.getLine(this.line + n);
if (line != null && n > this.maxLookAhead) {
this.maxLookAhead = n;
}
return line
};
Context.prototype.baseToken = function (n) {
var this$1 = this;
if (!this.baseTokens) {
return null
}
while (this.baseTokens[this.baseTokenPos] <= n) {
this$1.baseTokenPos += 2;
}
var type = this.baseTokens[this.baseTokenPos + 1];
return {
type: type && type.replace(/( |^)overlay .*/, ""),
size: this.baseTokens[this.baseTokenPos] - n
}
};
Context.prototype.nextLine = function () {
this.line++;
if (this.maxLookAhead > 0) {
this.maxLookAhead--;
}
};
Context.fromSaved = function (doc, saved, line) {
if (saved instanceof SavedContext) {
return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead)
} else {
return new Context(doc, copyState(doc.mode, saved), line)
}
};
Context.prototype.save = function (copy) {
var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state;
return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state
};
// Compute a style array (an array starting with a mode generation
// -- for invalidation -- followed by pairs of end positions and
// style strings), which is used to highlight the tokens on the
// line.
function highlightLine(cm, line, context, forceToEnd) {
// A styles array always starts with a number identifying the
// mode/overlays that it is based on (for easy invalidation).
var st = [cm.state.modeGen],
lineClasses = {};
// Compute the base array of styles
runMode(cm, line.text, cm.doc.mode, context, function (end, style) {
return st.push(end, style);
},
lineClasses, forceToEnd);
var state = context.state;
// Run overlays, adjust style array.
var loop = function (o) {
context.baseTokens = st;
var overlay = cm.state.overlays[o],
i = 1,
at = 0;
context.state = true;
runMode(cm, line.text, overlay.mode, context, function (end, style) {
var start = i;
// Ensure there's a token end at the current position, and that i points at it
while (at < end) {
var i_end = st[i];
if (i_end > end) {
st.splice(i, 1, end, st[i + 1], i_end);
}
i += 2;
at = Math.min(end, i_end);
}
if (!style) {
return
}
if (overlay.opaque) {
st.splice(start, i - start, end, "overlay " + style);
i = start + 2;
} else {
for (; start < i; start += 2) {
var cur = st[start + 1];
st[start + 1] = (cur ? cur + " " : "") + "overlay " + style;
}
}
}, lineClasses);
context.state = state;
context.baseTokens = null;
context.baseTokenPos = 1;
};
for (var o = 0; o < cm.state.overlays.length; ++o) loop(o);
return {
styles: st,
classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null
}
}
function getLineStyles(cm, line, updateFrontier) {
if (!line.styles || line.styles[0] != cm.state.modeGen) {
var context = getContextBefore(cm, lineNo(line));
var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state);
var result = highlightLine(cm, line, context);
if (resetState) {
context.state = resetState;
}
line.stateAfter = context.save(!resetState);
line.styles = result.styles;
if (result.classes) {
line.styleClasses = result.classes;
} else if (line.styleClasses) {
line.styleClasses = null;
}
if (updateFrontier === cm.doc.highlightFrontier) {
cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier);
}
}
return line.styles
}
function getContextBefore(cm, n, precise) {
var doc = cm.doc,
display = cm.display;
if (!doc.mode.startState) {
return new Context(doc, true, n)
}
var start = findStartLine(cm, n, precise);
var saved = start > doc.first && getLine(doc, start - 1).stateAfter;
var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start);
doc.iter(start, n, function (line) {
processLine(cm, line.text, context);
var pos = context.line;
line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null;
context.nextLine();
});
if (precise) {
doc.modeFrontier = context.line;
}
return context
}
// Lightweight form of highlight -- proceed over this line and
// update state, but don't save a style array. Used for lines that
// aren't currently visible.
function processLine(cm, text, context, startAt) {
var mode = cm.doc.mode;
var stream = new StringStream(text, cm.options.tabSize, context);
stream.start = stream.pos = startAt || 0;
if (text == "") {
callBlankLine(mode, context.state);
}
while (!stream.eol()) {
readToken(mode, stream, context.state);
stream.start = stream.pos;
}
}
function callBlankLine(mode, state) {
if (mode.blankLine) {
return mode.blankLine(state)
}
if (!mode.innerMode) {
return
}
var inner = innerMode(mode, state);
if (inner.mode.blankLine) {
return inner.mode.blankLine(inner.state)
}
}
function readToken(mode, stream, state, inner) {
for (var i = 0; i < 10; i++) {
if (inner) {
inner[0] = innerMode(mode, state).mode;
}
var style = mode.token(stream, state);
if (stream.pos > stream.start) {
return style
}
}
throw new Error("Mode " + mode.name + " failed to advance stream.")
}
var Token = function (stream, type, state) {
this.start = stream.start;
this.end = stream.pos;
this.string = stream.current();
this.type = type || null;
this.state = state;
};
// Utility for getTokenAt and getLineTokens
function takeToken(cm, pos, precise, asArray) {
var doc = cm.doc,
mode = doc.mode,
style;
pos = clipPos(doc, pos);
var line = getLine(doc, pos.line),
context = getContextBefore(cm, pos.line, precise);
var stream = new StringStream(line.text, cm.options.tabSize, context),
tokens;
if (asArray) {
tokens = [];
}
while ((asArray || stream.pos < pos.ch) && !stream.eol()) {
stream.start = stream.pos;
style = readToken(mode, stream, context.state);
if (asArray) {
tokens.push(new Token(stream, style, copyState(doc.mode, context.state)));
}
}
return asArray ? tokens : new Token(stream, style, context.state)
}
function extractLineClasses(type, output) {
if (type) {
for (;;) {
var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/);
if (!lineClass) {
break
}
type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);
var prop = lineClass[1] ? "bgClass" : "textClass";
if (output[prop] == null) {
output[prop] = lineClass[2];
} else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop])) {
output[prop] += " " + lineClass[2];
}
}
}
return type
}
// Run the given mode's parser over a line, calling f for each token.
function runMode(cm, text, mode, context, f, lineClasses, forceToEnd) {
var flattenSpans = mode.flattenSpans;
if (flattenSpans == null) {
flattenSpans = cm.options.flattenSpans;
}
var curStart = 0,
curStyle = null;
var stream = new StringStream(text, cm.options.tabSize, context),
style;
var inner = cm.options.addModeClass && [null];
if (text == "") {
extractLineClasses(callBlankLine(mode, context.state), lineClasses);
}
while (!stream.eol()) {
if (stream.pos > cm.options.maxHighlightLength) {
flattenSpans = false;
if (forceToEnd) {
processLine(cm, text, context, stream.pos);
}
stream.pos = text.length;
style = null;
} else {
style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses);
}
if (inner) {
var mName = inner[0].name;
if (mName) {
style = "m-" + (style ? mName + " " + style : mName);
}
}
if (!flattenSpans || curStyle != style) {
while (curStart < stream.start) {
curStart = Math.min(stream.start, curStart + 5000);
f(curStart, curStyle);
}
curStyle = style;
}
stream.start = stream.pos;
}
while (curStart < stream.pos) {
// Webkit seems to refuse to render text nodes longer than 57444
// characters, and returns inaccurate measurements in nodes
// starting around 5000 chars.
var pos = Math.min(stream.pos, curStart + 5000);
f(pos, curStyle);
curStart = pos;
}
}
// Finds the line to start with when starting a parse. Tries to
// find a line with a stateAfter, so that it can start with a
// valid state. If that fails, it returns the line with the
// smallest indentation, which tends to need the least context to
// parse correctly.
function findStartLine(cm, n, precise) {
var minindent, minline, doc = cm.doc;
var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
for (var search = n; search > lim; --search) {
if (search <= doc.first) {
return doc.first
}
var line = getLine(doc, search - 1),
after = line.stateAfter;
if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier)) {
return search
}
var indented = countColumn(line.text, null, cm.options.tabSize);
if (minline == null || minindent > indented) {
minline = search - 1;
minindent = indented;
}
}
return minline
}
function retreatFrontier(doc, n) {
doc.modeFrontier = Math.min(doc.modeFrontier, n);
if (doc.highlightFrontier < n - 10) {
return
}
var start = doc.first;
for (var line = n - 1; line > start; line--) {
var saved = getLine(doc, line).stateAfter;
// change is on 3
// state on line 1 looked ahead 2 -- so saw 3
// test 1 + 2 < 3 should cover this
if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) {
start = line + 1;
break
}
}
doc.highlightFrontier = Math.min(doc.highlightFrontier, start);
}
// LINE DATA STRUCTURE
// Line objects. These hold state related to a line, including
// highlighting info (the styles array).
var Line = function (text, markedSpans, estimateHeight) {
this.text = text;
attachMarkedSpans(this, markedSpans);
this.height = estimateHeight ? estimateHeight(this) : 1;
};
Line.prototype.lineNo = function () {
return lineNo(this)
};
eventMixin(Line);
// Change the content (text, markers) of a line. Automatically
// invalidates cached information and tries to re-estimate the
// line's height.
function updateLine(line, text, markedSpans, estimateHeight) {
line.text = text;
if (line.stateAfter) {
line.stateAfter = null;
}
if (line.styles) {
line.styles = null;
}
if (line.order != null) {
line.order = null;
}
detachMarkedSpans(line);
attachMarkedSpans(line, markedSpans);
var estHeight = estimateHeight ? estimateHeight(line) : 1;
if (estHeight != line.height) {
updateLineHeight(line, estHeight);
}
}
// Detach a line from the document tree and its markers.
function cleanUpLine(line) {
line.parent = null;
detachMarkedSpans(line);
}
// Convert a style as returned by a mode (either null, or a string
// containing one or more styles) to a CSS style. This is cached,
// and also looks for line-wide styles.
var styleToClassCache = {},
styleToClassCacheWithMode = {};
function interpretTokenStyle(style, options) {
if (!style || /^\s*$/.test(style)) {
return null
}
var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
return cache[style] ||
(cache[style] = style.replace(/\S+/g, "cm-$&"))
}
// Render the DOM representation of the text of a line. Also builds
// up a 'line map', which points at the DOM nodes that represent
// specific stretches of text, and is used by the measuring code.
// The returned object contains the DOM node, this map, and
// information about line-wide styles that were set by the mode.
function buildLineContent(cm, lineView) {
// The padding-right forces the element to have a 'border', which
// is needed on Webkit to be able to get line-level bounding
// rectangles for it (in measureChar).
var content = eltP("span", null, null, webkit ? "padding-right: .1px" : null);
var builder = {
pre: eltP("pre", [content], "CodeMirror-line"),
content: content,
col: 0,
pos: 0,
cm: cm,
trailingSpace: false,
splitSpaces: cm.getOption("lineWrapping")
};
lineView.measure = {};
// Iterate over the logical lines that make up this visual line.
for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
var line = i ? lineView.rest[i - 1] : lineView.line,
order = (void 0);
builder.pos = 0;
builder.addToken = buildToken;
// Optionally wire in some hacks into the token-rendering
// algorithm, to deal with browser quirks.
if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction))) {
builder.addToken = buildTokenBadBidi(builder.addToken, order);
}
builder.map = [];
var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line);
insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate));
if (line.styleClasses) {
if (line.styleClasses.bgClass) {
builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || "");
}
if (line.styleClasses.textClass) {
builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || "");
}
}
// Ensure at least a single node is present, for measuring.
if (builder.map.length == 0) {
builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure)));
}
// Store the map and a cache object for the current logical line
if (i == 0) {
lineView.measure.map = builder.map;
lineView.measure.cache = {};
} else {
(lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map);
(lineView.measure.caches || (lineView.measure.caches = [])).push({});
}
}
// See issue #2901
if (webkit) {
var last = builder.content.lastChild;
if (/\bcm-tab\b/.test(last.className) || (last.querySelector && last.querySelector(".cm-tab"))) {
builder.content.className = "cm-tab-wrap-hack";
}
}
signal(cm, "renderLine", cm, lineView.line, builder.pre);
if (builder.pre.className) {
builder.textClass = joinClasses(builder.pre.className, builder.textClass || "");
}
return builder
}
function defaultSpecialCharPlaceholder(ch) {
var token = elt("span", "\u2022", "cm-invalidchar");
token.title = "\\u" + ch.charCodeAt(0).toString(16);
token.setAttribute("aria-label", token.title);
return token
}
// Build up the DOM representation for a single token, and add it to
// the line map. Takes care to render special characters separately.
function buildToken(builder, text, style, startStyle, endStyle, css, attributes) {
if (!text) {
return
}
var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text;
var special = builder.cm.state.specialChars,
mustWrap = false;
var content;
if (!special.test(text)) {
builder.col += text.length;
content = document.createTextNode(displayText);
builder.map.push(builder.pos, builder.pos + text.length, content);
if (ie && ie_version < 9) {
mustWrap = true;
}
builder.pos += text.length;
} else {
content = document.createDocumentFragment();
var pos = 0;
while (true) {
special.lastIndex = pos;
var m = special.exec(text);
var skipped = m ? m.index - pos : text.length - pos;
if (skipped) {
var txt = document.createTextNode(displayText.slice(pos, pos + skipped));
if (ie && ie_version < 9) {
content.appendChild(elt("span", [txt]));
} else {
content.appendChild(txt);
}
builder.map.push(builder.pos, builder.pos + skipped, txt);
builder.col += skipped;
builder.pos += skipped;
}
if (!m) {
break
}
pos += skipped + 1;
var txt$1 = (void 0);
if (m[0] == "\t") {
var tabSize = builder.cm.options.tabSize,
tabWidth = tabSize - builder.col % tabSize;
txt$1 = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
txt$1.setAttribute("role", "presentation");
txt$1.setAttribute("cm-text", "\t");
builder.col += tabWidth;
} else if (m[0] == "\r" || m[0] == "\n") {
txt$1 = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar"));
txt$1.setAttribute("cm-text", m[0]);
builder.col += 1;
} else {
txt$1 = builder.cm.options.specialCharPlaceholder(m[0]);
txt$1.setAttribute("cm-text", m[0]);
if (ie && ie_version < 9) {
content.appendChild(elt("span", [txt$1]));
} else {
content.appendChild(txt$1);
}
builder.col += 1;
}
builder.map.push(builder.pos, builder.pos + 1, txt$1);
builder.pos++;
}
}
builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32;
if (style || startStyle || endStyle || mustWrap || css) {
var fullStyle = style || "";
if (startStyle) {
fullStyle += startStyle;
}
if (endStyle) {
fullStyle += endStyle;
}
var token = elt("span", [content], fullStyle, css);
if (attributes) {
for (var attr in attributes) {
if (attributes.hasOwnProperty(attr) && attr != "style" && attr != "class") {
token.setAttribute(attr, attributes[attr]);
}
}
}
return builder.content.appendChild(token)
}
builder.content.appendChild(content);
}
// Change some spaces to NBSP to prevent the browser from collapsing
// trailing spaces at the end of a line when rendering text (issue #1362).
function splitSpaces(text, trailingBefore) {
if (text.length > 1 && !/ /.test(text)) {
return text
}
var spaceBefore = trailingBefore,
result = "";
for (var i = 0; i < text.length; i++) {
var ch = text.charAt(i);
if (ch == " " && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32)) {
ch = "\u00a0";
}
result += ch;
spaceBefore = ch == " ";
}
return result
}
// Work around nonsense dimensions being reported for stretches of
// right-to-left text.
function buildTokenBadBidi(inner, order) {
return function (builder, text, style, startStyle, endStyle, css, attributes) {
style = style ? style + " cm-force-border" : "cm-force-border";
var start = builder.pos,
end = start + text.length;
for (;;) {
// Find the part that overlaps with the start of this text
var part = (void 0);
for (var i = 0; i < order.length; i++) {
part = order[i];
if (part.to > start && part.from <= start) {
break
}
}
if (part.to >= end) {
return inner(builder, text, style, startStyle, endStyle, css, attributes)
}
inner(builder, text.slice(0, part.to - start), style, startStyle, null, css, attributes);
startStyle = null;
text = text.slice(part.to - start);
start = part.to;
}
}
}
function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
var widget = !ignoreWidget && marker.widgetNode;
if (widget) {
builder.map.push(builder.pos, builder.pos + size, widget);
}
if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {
if (!widget) {
widget = builder.content.appendChild(document.createElement("span"));
}
widget.setAttribute("cm-marker", marker.id);
}
if (widget) {
builder.cm.display.input.setUneditable(widget);
builder.content.appendChild(widget);
}
builder.pos += size;
builder.trailingSpace = false;
}
// Outputs a number of spans to make up a line, taking highlighting
// and marked text into account.
function insertLineContent(line, builder, styles) {
var spans = line.markedSpans,
allText = line.text,
at = 0;
if (!spans) {
for (var i$1 = 1; i$1 < styles.length; i$1 += 2) {
builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1 + 1], builder.cm.options));
}
return
}
var len = allText.length,
pos = 0,
i = 1,
text = "",
style, css;
var nextChange = 0,
spanStyle, spanEndStyle, spanStartStyle, collapsed, attributes;
for (;;) {
if (nextChange == pos) { // Update current marker set
spanStyle = spanEndStyle = spanStartStyle = css = "";
attributes = null;
collapsed = null;
nextChange = Infinity;
var foundBookmarks = [],
endStyles = (void 0);
for (var j = 0; j < spans.length; ++j) {
var sp = spans[j],
m = sp.marker;
if (m.type == "bookmark" && sp.from == pos && m.widgetNode) {
foundBookmarks.push(m);
} else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {
if (sp.to != null && sp.to != pos && nextChange > sp.to) {
nextChange = sp.to;
spanEndStyle = "";
}
if (m.className) {
spanStyle += " " + m.className;
}
if (m.css) {
css = (css ? css + ";" : "") + m.css;
}
if (m.startStyle && sp.from == pos) {
spanStartStyle += " " + m.startStyle;
}
if (m.endStyle && sp.to == nextChange) {
(endStyles || (endStyles = [])).push(m.endStyle, sp.to);
}
// support for the old title property
// https://github.com/codemirror/CodeMirror/pull/5673
if (m.title) {
(attributes || (attributes = {})).title = m.title;
}
if (m.attributes) {
for (var attr in m.attributes) {
(attributes || (attributes = {}))[attr] = m.attributes[attr];
}
}
if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0)) {
collapsed = sp;
}
} else if (sp.from > pos && nextChange > sp.from) {
nextChange = sp.from;
}
}
if (endStyles) {
for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2) {
if (endStyles[j$1 + 1] == nextChange) {
spanEndStyle += " " + endStyles[j$1];
}
}
}
if (!collapsed || collapsed.from == pos) {
for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2) {
buildCollapsedSpan(builder, 0, foundBookmarks[j$2]);
}
}
if (collapsed && (collapsed.from || 0) == pos) {
buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
collapsed.marker, collapsed.from == null);
if (collapsed.to == null) {
return
}
if (collapsed.to == pos) {
collapsed = false;
}
}
}
if (pos >= len) {
break
}
var upto = Math.min(len, nextChange);
while (true) {
if (text) {
var end = pos + text.length;
if (!collapsed) {
var tokenText = end > upto ? text.slice(0, upto - pos) : text;
builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", css, attributes);
}
if (end >= upto) {
text = text.slice(upto - pos);
pos = upto;
break
}
pos = end;
spanStartStyle = "";
}
text = allText.slice(at, at = styles[i++]);
style = interpretTokenStyle(styles[i++], builder.cm.options);
}
}
}
// These objects are used to represent the visible (currently drawn)
// part of the document. A LineView may correspond to multiple
// logical lines, if those are connected by collapsed ranges.
function LineView(doc, line, lineN) {
// The starting line
this.line = line;
// Continuing lines, if any
this.rest = visualLineContinued(line);
// Number of logical lines in this visual line
this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;
this.node = this.text = null;
this.hidden = lineIsHidden(doc, line);
}
// Create a range of LineView objects for the given lines.
function buildViewArray(cm, from, to) {
var array = [],
nextPos;
for (var pos = from; pos < to; pos = nextPos) {
var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);
nextPos = pos + view.size;
array.push(view);
}
return array
}
var operationGroup = null;
function pushOperation(op) {
if (operationGroup) {
operationGroup.ops.push(op);
} else {
op.ownsGroup = operationGroup = {
ops: [op],
delayedCallbacks: []
};
}
}
function fireCallbacksForOps(group) {
// Calls delayed callbacks and cursorActivity handlers until no
// new ones appear
var callbacks = group.delayedCallbacks,
i = 0;
do {
for (; i < callbacks.length; i++) {
callbacks[i].call(null);
}
for (var j = 0; j < group.ops.length; j++) {
var op = group.ops[j];
if (op.cursorActivityHandlers) {
while (op.cursorActivityCalled < op.cursorActivityHandlers.length) {
op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm);
}
}
}
} while (i < callbacks.length)
}
function finishOperation(op, endCb) {
var group = op.ownsGroup;
if (!group) {
return
}
try {
fireCallbacksForOps(group);
} finally {
operationGroup = null;
endCb(group);
}
}
var orphanDelayedCallbacks = null;
// Often, we want to signal events at a point where we are in the
// middle of some work, but don't want the handler to start calling
// other methods on the editor, which might be in an inconsistent
// state or simply not expect any other events to happen.
// signalLater looks whether there are any handlers, and schedules
// them to be executed when the last operation ends, or, if no
// operation is active, when a timeout fires.
function signalLater(emitter, type /*, values...*/ ) {
var arr = getHandlers(emitter, type);
if (!arr.length) {
return
}
var args = Array.prototype.slice.call(arguments, 2),
list;
if (operationGroup) {
list = operationGroup.delayedCallbacks;
} else if (orphanDelayedCallbacks) {
list = orphanDelayedCallbacks;
} else {
list = orphanDelayedCallbacks = [];
setTimeout(fireOrphanDelayed, 0);
}
var loop = function (i) {
list.push(function () {
return arr[i].apply(null, args);
});
};
for (var i = 0; i < arr.length; ++i)
loop(i);
}
function fireOrphanDelayed() {
var delayed = orphanDelayedCallbacks;
orphanDelayedCallbacks = null;
for (var i = 0; i < delayed.length; ++i) {
delayed[i]();
}
}
// When an aspect of a line changes, a string is added to
// lineView.changes. This updates the relevant part of the line's
// DOM structure.
function updateLineForChanges(cm, lineView, lineN, dims) {
for (var j = 0; j < lineView.changes.length; j++) {
var type = lineView.changes[j];
if (type == "text") {
updateLineText(cm, lineView);
} else if (type == "gutter") {
updateLineGutter(cm, lineView, lineN, dims);
} else if (type == "class") {
updateLineClasses(cm, lineView);
} else if (type == "widget") {
updateLineWidgets(cm, lineView, dims);
}
}
lineView.changes = null;
}
// Lines with gutter elements, widgets or a background class need to
// be wrapped, and have the extra elements added to the wrapper div
function ensureLineWrapped(lineView) {
if (lineView.node == lineView.text) {
lineView.node = elt("div", null, null, "position: relative");
if (lineView.text.parentNode) {
lineView.text.parentNode.replaceChild(lineView.node, lineView.text);
}
lineView.node.appendChild(lineView.text);
if (ie && ie_version < 8) {
lineView.node.style.zIndex = 2;
}
}
return lineView.node
}
function updateLineBackground(cm, lineView) {
var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass;
if (cls) {
cls += " CodeMirror-linebackground";
}
if (lineView.background) {
if (cls) {
lineView.background.className = cls;
} else {
lineView.background.parentNode.removeChild(lineView.background);
lineView.background = null;
}
} else if (cls) {
var wrap = ensureLineWrapped(lineView);
lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
cm.display.input.setUneditable(lineView.background);
}
}
// Wrapper around buildLineContent which will reuse the structure
// in display.externalMeasured when possible.
function getLineContent(cm, lineView) {
var ext = cm.display.externalMeasured;
if (ext && ext.line == lineView.line) {
cm.display.externalMeasured = null;
lineView.measure = ext.measure;
return ext.built
}
return buildLineContent(cm, lineView)
}
// Redraw the line's text. Interacts with the background and text
// classes because the mode may output tokens that influence these
// classes.
function updateLineText(cm, lineView) {
var cls = lineView.text.className;
var built = getLineContent(cm, lineView);
if (lineView.text == lineView.node) {
lineView.node = built.pre;
}
lineView.text.parentNode.replaceChild(built.pre, lineView.text);
lineView.text = built.pre;
if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
lineView.bgClass = built.bgClass;
lineView.textClass = built.textClass;
updateLineClasses(cm, lineView);
} else if (cls) {
lineView.text.className = cls;
}
}
function updateLineClasses(cm, lineView) {
updateLineBackground(cm, lineView);
if (lineView.line.wrapClass) {
ensureLineWrapped(lineView).className = lineView.line.wrapClass;
} else if (lineView.node != lineView.text) {
lineView.node.className = "";
}
var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass;
lineView.text.className = textClass || "";
}
function updateLineGutter(cm, lineView, lineN, dims) {
if (lineView.gutter) {
lineView.node.removeChild(lineView.gutter);
lineView.gutter = null;
}
if (lineView.gutterBackground) {
lineView.node.removeChild(lineView.gutterBackground);
lineView.gutterBackground = null;
}
if (lineView.line.gutterClass) {
var wrap = ensureLineWrapped(lineView);
lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass,
("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px; width: " + (dims.gutterTotalWidth) + "px"));
cm.display.input.setUneditable(lineView.gutterBackground);
wrap.insertBefore(lineView.gutterBackground, lineView.text);
}
var markers = lineView.line.gutterMarkers;
if (cm.options.lineNumbers || markers) {
var wrap$1 = ensureLineWrapped(lineView);
var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"));
cm.display.input.setUneditable(gutterWrap);
wrap$1.insertBefore(gutterWrap, lineView.text);
if (lineView.line.gutterClass) {
gutterWrap.className += " " + lineView.line.gutterClass;
}
if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) {
lineView.lineNumber = gutterWrap.appendChild(
elt("div", lineNumberFor(cm.options, lineN),
"CodeMirror-linenumber CodeMirror-gutter-elt",
("left: " + (dims.gutterLeft["CodeMirror-linenumbers"]) + "px; width: " + (cm.display.lineNumInnerWidth) + "px")));
}
if (markers) {
for (var k = 0; k < cm.options.gutters.length; ++k) {
var id = cm.options.gutters[k],
found = markers.hasOwnProperty(id) && markers[id];
if (found) {
gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt",
("left: " + (dims.gutterLeft[id]) + "px; width: " + (dims.gutterWidth[id]) + "px")));
}
}
}
}
}
function updateLineWidgets(cm, lineView, dims) {
if (lineView.alignable) {
lineView.alignable = null;
}
for (var node = lineView.node.firstChild, next = (void 0); node; node = next) {
next = node.nextSibling;
if (node.className == "CodeMirror-linewidget") {
lineView.node.removeChild(node);
}
}
insertLineWidgets(cm, lineView, dims);
}
// Build a line's DOM representation from scratch
function buildLineElement(cm, lineView, lineN, dims) {
var built = getLineContent(cm, lineView);
lineView.text = lineView.node = built.pre;
if (built.bgClass) {
lineView.bgClass = built.bgClass;
}
if (built.textClass) {
lineView.textClass = built.textClass;
}
updateLineClasses(cm, lineView);
updateLineGutter(cm, lineView, lineN, dims);
insertLineWidgets(cm, lineView, dims);
return lineView.node
}
// A lineView may contain multiple logical lines (when merged by
// collapsed spans). The widgets for all of them need to be drawn.
function insertLineWidgets(cm, lineView, dims) {
insertLineWidgetsFor(cm, lineView.line, lineView, dims, true);
if (lineView.rest) {
for (var i = 0; i < lineView.rest.length; i++) {
insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false);
}
}
}
function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {
if (!line.widgets) {
return
}
var wrap = ensureLineWrapped(lineView);
for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
var widget = ws[i],
node = elt("div", [widget.node], "CodeMirror-linewidget");
if (!widget.handleMouseEvents) {
node.setAttribute("cm-ignore-events", "true");
}
positionLineWidget(widget, node, lineView, dims);
cm.display.input.setUneditable(node);
if (allowAbove && widget.above) {
wrap.insertBefore(node, lineView.gutter || lineView.text);
} else {
wrap.appendChild(node);
}
signalLater(widget, "redraw");
}
}
function positionLineWidget(widget, node, lineView, dims) {
if (widget.noHScroll) {
(lineView.alignable || (lineView.alignable = [])).push(node);
var width = dims.wrapperWidth;
node.style.left = dims.fixedPos + "px";
if (!widget.coverGutter) {
width -= dims.gutterTotalWidth;
node.style.paddingLeft = dims.gutterTotalWidth + "px";
}
node.style.width = width + "px";
}
if (widget.coverGutter) {
node.style.zIndex = 5;
node.style.position = "relative";
if (!widget.noHScroll) {
node.style.marginLeft = -dims.gutterTotalWidth + "px";
}
}
}
function widgetHeight(widget) {
if (widget.height != null) {
return widget.height
}
var cm = widget.doc.cm;
if (!cm) {
return 0
}
if (!contains(document.body, widget.node)) {
var parentStyle = "position: relative;";
if (widget.coverGutter) {
parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;";
}
if (widget.noHScroll) {
parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;";
}
removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle));
}
return widget.height = widget.node.parentNode.offsetHeight
}
// Return true when the given mouse event happened in a widget
function eventInWidget(display, e) {
for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") ||
(n.parentNode == display.sizer && n != display.mover)) {
return true
}
}
}
// POSITION MEASUREMENT
function paddingTop(display) {
return display.lineSpace.offsetTop
}
function paddingVert(display) {
return display.mover.offsetHeight - display.lineSpace.offsetHeight
}
function paddingH(display) {
if (display.cachedPaddingH) {
return display.cachedPaddingH
}
var e = removeChildrenAndAdd(display.measure, elt("pre", "x"));
var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
var data = {
left: parseInt(style.paddingLeft),
right: parseInt(style.paddingRight)
};
if (!isNaN(data.left) && !isNaN(data.right)) {
display.cachedPaddingH = data;
}
return data
}
function scrollGap(cm) {
return scrollerGap - cm.display.nativeBarWidth
}
function displayWidth(cm) {
return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth
}
function displayHeight(cm) {
return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight
}
// Ensure the lineView.wrapping.heights array is populated. This is
// an array of bottom offsets for the lines that make up a drawn
// line. When lineWrapping is on, there might be more than one
// height.
function ensureLineHeights(cm, lineView, rect) {
var wrapping = cm.options.lineWrapping;
var curWidth = wrapping && displayWidth(cm);
if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
var heights = lineView.measure.heights = [];
if (wrapping) {
lineView.measure.width = curWidth;
var rects = lineView.text.firstChild.getClientRects();
for (var i = 0; i < rects.length - 1; i++) {
var cur = rects[i],
next = rects[i + 1];
if (Math.abs(cur.bottom - next.bottom) > 2) {
heights.push((cur.bottom + next.top) / 2 - rect.top);
}
}
}
heights.push(rect.bottom - rect.top);
}
}
// Find a line map (mapping character offsets to text nodes) and a
// measurement cache for the given line number. (A line view might
// contain multiple lines when collapsed ranges are present.)
function mapFromLineView(lineView, line, lineN) {
if (lineView.line == line) {
return {
map: lineView.measure.map,
cache: lineView.measure.cache
}
}
for (var i = 0; i < lineView.rest.length; i++) {
if (lineView.rest[i] == line) {
return {
map: lineView.measure.maps[i],
cache: lineView.measure.caches[i]
}
}
}
for (var i$1 = 0; i$1 < lineView.rest.length; i$1++) {
if (lineNo(lineView.rest[i$1]) > lineN) {
return {
map: lineView.measure.maps[i$1],
cache: lineView.measure.caches[i$1],
before: true
}
}
}
}
// Render a line into the hidden node display.externalMeasured. Used
// when measurement is needed for a line that's not in the viewport.
function updateExternalMeasurement(cm, line) {
line = visualLine(line);
var lineN = lineNo(line);
var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
view.lineN = lineN;
var built = view.built = buildLineContent(cm, view);
view.text = built.pre;
removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
return view
}
// Get a {top, bottom, left, right} box (in line-local coordinates)
// for a given character.
function measureChar(cm, line, ch, bias) {
return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias)
}
// Find a line view that corresponds to the given line number.
function findViewForLine(cm, lineN) {
if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo) {
return cm.display.view[findViewIndex(cm, lineN)]
}
var ext = cm.display.externalMeasured;
if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size) {
return ext
}
}
// Measurement can be split in two steps, the set-up work that
// applies to the whole line, and the measurement of the actual
// character. Functions like coordsChar, that need to do a lot of
// measurements in a row, can thus ensure that the set-up work is
// only done once.
function prepareMeasureForLine(cm, line) {
var lineN = lineNo(line);
var view = findViewForLine(cm, lineN);
if (view && !view.text) {
view = null;
} else if (view && view.changes) {
updateLineForChanges(cm, view, lineN, getDimensions(cm));
cm.curOp.forceUpdate = true;
}
if (!view) {
view = updateExternalMeasurement(cm, line);
}
var info = mapFromLineView(view, line, lineN);
return {
line: line,
view: view,
rect: null,
map: info.map,
cache: info.cache,
before: info.before,
hasHeights: false
}
}
// Given a prepared measurement object, measures the position of an
// actual character (or fetches it from the cache).
function measureCharPrepared(cm, prepared, ch, bias, varHeight) {
if (prepared.before) {
ch = -1;
}
var key = ch + (bias || ""),
found;
if (prepared.cache.hasOwnProperty(key)) {
found = prepared.cache[key];
} else {
if (!prepared.rect) {
prepared.rect = prepared.view.text.getBoundingClientRect();
}
if (!prepared.hasHeights) {
ensureLineHeights(cm, prepared.view, prepared.rect);
prepared.hasHeights = true;
}
found = measureCharInner(cm, prepared, ch, bias);
if (!found.bogus) {
prepared.cache[key] = found;
}
}
return {
left: found.left,
right: found.right,
top: varHeight ? found.rtop : found.top,
bottom: varHeight ? found.rbottom : found.bottom
}
}
var nullRect = {
left: 0,
right: 0,
top: 0,
bottom: 0
};
function nodeAndOffsetInLineMap(map$$1, ch, bias) {
var node, start, end, collapse, mStart, mEnd;
// First, search the line map for the text node corresponding to,
// or closest to, the target character.
for (var i = 0; i < map$$1.length; i += 3) {
mStart = map$$1[i];
mEnd = map$$1[i + 1];
if (ch < mStart) {
start = 0;
end = 1;
collapse = "left";
} else if (ch < mEnd) {
start = ch - mStart;
end = start + 1;
} else if (i == map$$1.length - 3 || ch == mEnd && map$$1[i + 3] > ch) {
end = mEnd - mStart;
start = end - 1;
if (ch >= mEnd) {
collapse = "right";
}
}
if (start != null) {
node = map$$1[i + 2];
if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right")) {
collapse = bias;
}
if (bias == "left" && start == 0) {
while (i && map$$1[i - 2] == map$$1[i - 3] && map$$1[i - 1].insertLeft) {
node = map$$1[(i -= 3) + 2];
collapse = "left";
}
}
if (bias == "right" && start == mEnd - mStart) {
while (i < map$$1.length - 3 && map$$1[i + 3] == map$$1[i + 4] && !map$$1[i + 5].insertLeft) {
node = map$$1[(i += 3) + 2];
collapse = "right";
}
}
break
}
}
return {
node: node,
start: start,
end: end,
collapse: collapse,
coverStart: mStart,
coverEnd: mEnd
}
}
function getUsefulRect(rects, bias) {
var rect = nullRect;
if (bias == "left") {
for (var i = 0; i < rects.length; i++) {
if ((rect = rects[i]).left != rect.right) {
break
}
}
} else {
for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) {
if ((rect = rects[i$1]).left != rect.right) {
break
}
}
}
return rect
}
function measureCharInner(cm, prepared, ch, bias) {
var place = nodeAndOffsetInLineMap(prepared.map, ch, bias);
var node = place.node,
start = place.start,
end = place.end,
collapse = place.collapse;
var rect;
if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned
while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) {
--start;
}
while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) {
++end;
}
if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) {
rect = node.parentNode.getBoundingClientRect();
} else {
rect = getUsefulRect(range(node, start, end).getClientRects(), bias);
}
if (rect.left || rect.right || start == 0) {
break
}
end = start;
start = start - 1;
collapse = "right";
}
if (ie && ie_version < 11) {
rect = maybeUpdateRectForZooming(cm.display.measure, rect);
}
} else { // If it is a widget, simply get the box for the whole widget.
if (start > 0) {
collapse = bias = "right";
}
var rects;
if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1) {
rect = rects[bias == "right" ? rects.length - 1 : 0];
} else {
rect = node.getBoundingClientRect();
}
}
if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {
var rSpan = node.parentNode.getClientRects()[0];
if (rSpan) {
rect = {
left: rSpan.left,
right: rSpan.left + charWidth(cm.display),
top: rSpan.top,
bottom: rSpan.bottom
};
} else {
rect = nullRect;
}
}
var rtop = rect.top - prepared.rect.top,
rbot = rect.bottom - prepared.rect.top;
var mid = (rtop + rbot) / 2;
var heights = prepared.view.measure.heights;
var i = 0;
for (; i < heights.length - 1; i++) {
if (mid < heights[i]) {
break
}
}
var top = i ? heights[i - 1] : 0,
bot = heights[i];
var result = {
left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
top: top,
bottom: bot
};
if (!rect.left && !rect.right) {
result.bogus = true;
}
if (!cm.options.singleCursorHeightPerLine) {
result.rtop = rtop;
result.rbottom = rbot;
}
return result
}
// Work around problem with bounding client rects on ranges being
// returned incorrectly when zoomed on IE10 and below.
function maybeUpdateRectForZooming(measure, rect) {
if (!window.screen || screen.logicalXDPI == null ||
screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure)) {
return rect
}
var scaleX = screen.logicalXDPI / screen.deviceXDPI;
var scaleY = screen.logicalYDPI / screen.deviceYDPI;
return {
left: rect.left * scaleX,
right: rect.right * scaleX,
top: rect.top * scaleY,
bottom: rect.bottom * scaleY
}
}
function clearLineMeasurementCacheFor(lineView) {
if (lineView.measure) {
lineView.measure.cache = {};
lineView.measure.heights = null;
if (lineView.rest) {
for (var i = 0; i < lineView.rest.length; i++) {
lineView.measure.caches[i] = {};
}
}
}
}
function clearLineMeasurementCache(cm) {
cm.display.externalMeasure = null;
removeChildren(cm.display.lineMeasure);
for (var i = 0; i < cm.display.view.length; i++) {
clearLineMeasurementCacheFor(cm.display.view[i]);
}
}
function clearCaches(cm) {
clearLineMeasurementCache(cm);
cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
if (!cm.options.lineWrapping) {
cm.display.maxLineChanged = true;
}
cm.display.lineNumChars = null;
}
function pageScrollX() {
// Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206
// which causes page_Offset and bounding client rects to use
// different reference viewports and invalidate our calculations.
if (chrome && android) {
return -(document.body.getBoundingClientRect().left - parseInt(getComputedStyle(document.body).marginLeft))
}
return window.pageXOffset || (document.documentElement || document.body).scrollLeft
}
function pageScrollY() {
if (chrome && android) {
return -(document.body.getBoundingClientRect().top - parseInt(getComputedStyle(document.body).marginTop))
}
return window.pageYOffset || (document.documentElement || document.body).scrollTop
}
function widgetTopHeight(lineObj) {
var height = 0;
if (lineObj.widgets) {
for (var i = 0; i < lineObj.widgets.length; ++i) {
if (lineObj.widgets[i].above) {
height += widgetHeight(lineObj.widgets[i]);
}
}
}
return height
}
// Converts a {top, bottom, left, right} box from line-local
// coordinates into another coordinate system. Context may be one of
// "line", "div" (display.lineDiv), "local"./null (editor), "window",
// or "page".
function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) {
if (!includeWidgets) {
var height = widgetTopHeight(lineObj);
rect.top += height;
rect.bottom += height;
}
if (context == "line") {
return rect
}
if (!context) {
context = "local";
}
var yOff = heightAtLine(lineObj);
if (context == "local") {
yOff += paddingTop(cm.display);
} else {
yOff -= cm.display.viewOffset;
}
if (context == "page" || context == "window") {
var lOff = cm.display.lineSpace.getBoundingClientRect();
yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
rect.left += xOff;
rect.right += xOff;
}
rect.top += yOff;
rect.bottom += yOff;
return rect
}
// Coverts a box from "div" coords to another coordinate system.
// Context may be "window", "page", "div", or "local"./null.
function fromCoordSystem(cm, coords, context) {
if (context == "div") {
return coords
}
var left = coords.left,
top = coords.top;
// First move into "page" coordinate system
if (context == "page") {
left -= pageScrollX();
top -= pageScrollY();
} else if (context == "local" || !context) {
var localBox = cm.display.sizer.getBoundingClientRect();
left += localBox.left;
top += localBox.top;
}
var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
return {
left: left - lineSpaceBox.left,
top: top - lineSpaceBox.top
}
}
function charCoords(cm, pos, context, lineObj, bias) {
if (!lineObj) {
lineObj = getLine(cm.doc, pos.line);
}
return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context)
}
// Returns a box for a given cursor position, which may have an
// 'other' property containing the position of the secondary cursor
// on a bidi boundary.
// A cursor Pos(line, char, "before") is on the same visual line as `char - 1`
// and after `char - 1` in writing order of `char - 1`
// A cursor Pos(line, char, "after") is on the same visual line as `char`
// and before `char` in writing order of `char`
// Examples (upper-case letters are RTL, lower-case are LTR):
// Pos(0, 1, ...)
// before after
// ab a|b a|b
// aB a|B aB|
// Ab |Ab A|b
// AB B|A B|A
// Every position after the last character on a line is considered to stick
// to the last character on the line.
function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {
lineObj = lineObj || getLine(cm.doc, pos.line);
if (!preparedMeasure) {
preparedMeasure = prepareMeasureForLine(cm, lineObj);
}
function get(ch, right) {
var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight);
if (right) {
m.left = m.right;
} else {
m.right = m.left;
}
return intoCoordSystem(cm, lineObj, m, context)
}
var order = getOrder(lineObj, cm.doc.direction),
ch = pos.ch,
sticky = pos.sticky;
if (ch >= lineObj.text.length) {
ch = lineObj.text.length;
sticky = "before";
} else if (ch <= 0) {
ch = 0;
sticky = "after";
}
if (!order) {
return get(sticky == "before" ? ch - 1 : ch, sticky == "before")
}
function getBidi(ch, partPos, invert) {
var part = order[partPos],
right = part.level == 1;
return get(invert ? ch - 1 : ch, right != invert)
}
var partPos = getBidiPartAt(order, ch, sticky);
var other = bidiOther;
var val = getBidi(ch, partPos, sticky == "before");
if (other != null) {
val.other = getBidi(ch, other, sticky != "before");
}
return val
}
// Used to cheaply estimate the coordinates for a position. Used for
// intermediate scroll updates.
function estimateCoords(cm, pos) {
var left = 0;
pos = clipPos(cm.doc, pos);
if (!cm.options.lineWrapping) {
left = charWidth(cm.display) * pos.ch;
}
var lineObj = getLine(cm.doc, pos.line);
var top = heightAtLine(lineObj) + paddingTop(cm.display);
return {
left: left,
right: left,
top: top,
bottom: top + lineObj.height
}
}
// Positions returned by coordsChar contain some extra information.
// xRel is the relative x position of the input coordinates compared
// to the found position (so xRel > 0 means the coordinates are to
// the right of the character position, for example). When outside
// is true, that means the coordinates lie outside the line's
// vertical range.
function PosWithInfo(line, ch, sticky, outside, xRel) {
var pos = Pos(line, ch, sticky);
pos.xRel = xRel;
if (outside) {
pos.outside = true;
}
return pos
}
// Compute the character position closest to the given coordinates.
// Input must be lineSpace-local ("div" coordinate system).
function coordsChar(cm, x, y) {
var doc = cm.doc;
y += cm.display.viewOffset;
if (y < 0) {
return PosWithInfo(doc.first, 0, null, true, -1)
}
var lineN = lineAtHeight(doc, y),
last = doc.first + doc.size - 1;
if (lineN > last) {
return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, true, 1)
}
if (x < 0) {
x = 0;
}
var lineObj = getLine(doc, lineN);
for (;;) {
var found = coordsCharInner(cm, lineObj, lineN, x, y);
var collapsed = collapsedSpanAround(lineObj, found.ch + (found.xRel > 0 ? 1 : 0));
if (!collapsed) {
return found
}
var rangeEnd = collapsed.find(1);
if (rangeEnd.line == lineN) {
return rangeEnd
}
lineObj = getLine(doc, lineN = rangeEnd.line);
}
}
function wrappedLineExtent(cm, lineObj, preparedMeasure, y) {
y -= widgetTopHeight(lineObj);
var end = lineObj.text.length;
var begin = findFirst(function (ch) {
return measureCharPrepared(cm, preparedMeasure, ch - 1).bottom <= y;
}, end, 0);
end = findFirst(function (ch) {
return measureCharPrepared(cm, preparedMeasure, ch).top > y;
}, begin, end);
return {
begin: begin,
end: end
}
}
function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) {
if (!preparedMeasure) {
preparedMeasure = prepareMeasureForLine(cm, lineObj);
}
var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), "line").top;
return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop)
}
// Returns true if the given side of a box is after the given
// coordinates, in top-to-bottom, left-to-right order.
function boxIsAfter(box, x, y, left) {
return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x
}
function coordsCharInner(cm, lineObj, lineNo$$1, x, y) {
// Move y into line-local coordinate space
y -= heightAtLine(lineObj);
var preparedMeasure = prepareMeasureForLine(cm, lineObj);
// When directly calling `measureCharPrepared`, we have to adjust
// for the widgets at this line.
var widgetHeight$$1 = widgetTopHeight(lineObj);
var begin = 0,
end = lineObj.text.length,
ltr = true;
var order = getOrder(lineObj, cm.doc.direction);
// If the line isn't plain left-to-right text, first figure out
// which bidi section the coordinates fall into.
if (order) {
var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart)
(cm, lineObj, lineNo$$1, preparedMeasure, order, x, y);
ltr = part.level != 1;
// The awkward -1 offsets are needed because findFirst (called
// on these below) will treat its first bound as inclusive,
// second as exclusive, but we want to actually address the
// characters in the part's range
begin = ltr ? part.from : part.to - 1;
end = ltr ? part.to : part.from - 1;
}
// A binary search to find the first character whose bounding box
// starts after the coordinates. If we run across any whose box wrap
// the coordinates, store that.
var chAround = null,
boxAround = null;
var ch = findFirst(function (ch) {
var box = measureCharPrepared(cm, preparedMeasure, ch);
box.top += widgetHeight$$1;
box.bottom += widgetHeight$$1;
if (!boxIsAfter(box, x, y, false)) {
return false
}
if (box.top <= y && box.left <= x) {
chAround = ch;
boxAround = box;
}
return true
}, begin, end);
var baseX, sticky, outside = false;
// If a box around the coordinates was found, use that
if (boxAround) {
// Distinguish coordinates nearer to the left or right side of the box
var atLeft = x - boxAround.left < boxAround.right - x,
atStart = atLeft == ltr;
ch = chAround + (atStart ? 0 : 1);
sticky = atStart ? "after" : "before";
baseX = atLeft ? boxAround.left : boxAround.right;
} else {
// (Adjust for extended bound, if necessary.)
if (!ltr && (ch == end || ch == begin)) {
ch++;
}
// To determine which side to associate with, get the box to the
// left of the character and compare it's vertical position to the
// coordinates
sticky = ch == 0 ? "after" : ch == lineObj.text.length ? "before" :
(measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight$$1 <= y) == ltr ?
"after" : "before";
// Now get accurate coordinates for this place, in order to get a
// base X position
var coords = cursorCoords(cm, Pos(lineNo$$1, ch, sticky), "line", lineObj, preparedMeasure);
baseX = coords.left;
outside = y < coords.top || y >= coords.bottom;
}
ch = skipExtendingChars(lineObj.text, ch, 1);
return PosWithInfo(lineNo$$1, ch, sticky, outside, x - baseX)
}
function coordsBidiPart(cm, lineObj, lineNo$$1, preparedMeasure, order, x, y) {
// Bidi parts are sorted left-to-right, and in a non-line-wrapping
// situation, we can take this ordering to correspond to the visual
// ordering. This finds the first part whose end is after the given
// coordinates.
var index = findFirst(function (i) {
var part = order[i],
ltr = part.level != 1;
return boxIsAfter(cursorCoords(cm, Pos(lineNo$$1, ltr ? part.to : part.from, ltr ? "before" : "after"),
"line", lineObj, preparedMeasure), x, y, true)
}, 0, order.length - 1);
var part = order[index];
// If this isn't the first part, the part's start is also after
// the coordinates, and the coordinates aren't on the same line as
// that start, move one part back.
if (index > 0) {
var ltr = part.level != 1;
var start = cursorCoords(cm, Pos(lineNo$$1, ltr ? part.from : part.to, ltr ? "after" : "before"),
"line", lineObj, preparedMeasure);
if (boxIsAfter(start, x, y, true) && start.top > y) {
part = order[index - 1];
}
}
return part
}
function coordsBidiPartWrapped(cm, lineObj, _lineNo, preparedMeasure, order, x, y) {
// In a wrapped line, rtl text on wrapping boundaries can do things
// that don't correspond to the ordering in our `order` array at
// all, so a binary search doesn't work, and we want to return a
// part that only spans one line so that the binary search in
// coordsCharInner is safe. As such, we first find the extent of the
// wrapped line, and then do a flat search in which we discard any
// spans that aren't on the line.
var ref = wrappedLineExtent(cm, lineObj, preparedMeasure, y);
var begin = ref.begin;
var end = ref.end;
if (/\s/.test(lineObj.text.charAt(end - 1))) {
end--;
}
var part = null,
closestDist = null;
for (var i = 0; i < order.length; i++) {
var p = order[i];
if (p.from >= end || p.to <= begin) {
continue
}
var ltr = p.level != 1;
var endX = measureCharPrepared(cm, preparedMeasure, ltr ? Math.min(end, p.to) - 1 : Math.max(begin, p.from)).right;
// Weigh against spans ending before this, so that they are only
// picked if nothing ends after
var dist = endX < x ? x - endX + 1e9 : endX - x;
if (!part || closestDist > dist) {
part = p;
closestDist = dist;
}
}
if (!part) {
part = order[order.length - 1];
}
// Clip the part to the wrapped line.
if (part.from < begin) {
part = {
from: begin,
to: part.to,
level: part.level
};
}
if (part.to > end) {
part = {
from: part.from,
to: end,
level: part.level
};
}
return part
}
var measureText;
// Compute the default text height.
function textHeight(display) {
if (display.cachedTextHeight != null) {
return display.cachedTextHeight
}
if (measureText == null) {
measureText = elt("pre");
// Measure a bunch of lines, for browsers that compute
// fractional heights.
for (var i = 0; i < 49; ++i) {
measureText.appendChild(document.createTextNode("x"));
measureText.appendChild(elt("br"));
}
measureText.appendChild(document.createTextNode("x"));
}
removeChildrenAndAdd(display.measure, measureText);
var height = measureText.offsetHeight / 50;
if (height > 3) {
display.cachedTextHeight = height;
}
removeChildren(display.measure);
return height || 1
}
// Compute the default character width.
function charWidth(display) {
if (display.cachedCharWidth != null) {
return display.cachedCharWidth
}
var anchor = elt("span", "xxxxxxxxxx");
var pre = elt("pre", [anchor]);
removeChildrenAndAdd(display.measure, pre);
var rect = anchor.getBoundingClientRect(),
width = (rect.right - rect.left) / 10;
if (width > 2) {
display.cachedCharWidth = width;
}
return width || 10
}
// Do a bulk-read of the DOM positions and sizes needed to draw the
// view, so that we don't interleave reading and writing to the DOM.
function getDimensions(cm) {
var d = cm.display,
left = {},
width = {};
var gutterLeft = d.gutters.clientLeft;
for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft;
width[cm.options.gutters[i]] = n.clientWidth;
}
return {
fixedPos: compensateForHScroll(d),
gutterTotalWidth: d.gutters.offsetWidth,
gutterLeft: left,
gutterWidth: width,
wrapperWidth: d.wrapper.clientWidth
}
}
// Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
// but using getBoundingClientRect to get a sub-pixel-accurate
// result.
function compensateForHScroll(display) {
return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left
}
// Returns a function that estimates the height of a line, to use as
// first approximation until the line becomes visible (and is thus
// properly measurable).
function estimateHeight(cm) {
var th = textHeight(cm.display),
wrapping = cm.options.lineWrapping;
var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
return function (line) {
if (lineIsHidden(cm.doc, line)) {
return 0
}
var widgetsHeight = 0;
if (line.widgets) {
for (var i = 0; i < line.widgets.length; i++) {
if (line.widgets[i].height) {
widgetsHeight += line.widgets[i].height;
}
}
}
if (wrapping) {
return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th
} else {
return widgetsHeight + th
}
}
}
function estimateLineHeights(cm) {
var doc = cm.doc,
est = estimateHeight(cm);
doc.iter(function (line) {
var estHeight = est(line);
if (estHeight != line.height) {
updateLineHeight(line, estHeight);
}
});
}
// Given a mouse event, find the corresponding position. If liberal
// is false, it checks whether a gutter or scrollbar was clicked,
// and returns null if it was. forRect is used by rectangular
// selections, and tries to estimate a character position even for
// coordinates beyond the right of the text.
function posFromMouse(cm, e, liberal, forRect) {
var display = cm.display;
if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") {
return null
}
var x, y, space = display.lineSpace.getBoundingClientRect();
// Fails unpredictably on IE[67] when mouse is dragged around quickly.
try {
x = e.clientX - space.left;
y = e.clientY - space.top;
} catch (e) {
return null
}
var coords = coordsChar(cm, x, y),
line;
if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));
}
return coords
}
// Find the view element corresponding to a given line. Return null
// when the line isn't visible.
function findViewIndex(cm, n) {
if (n >= cm.display.viewTo) {
return null
}
n -= cm.display.viewFrom;
if (n < 0) {
return null
}
var view = cm.display.view;
for (var i = 0; i < view.length; i++) {
n -= view[i].size;
if (n < 0) {
return i
}
}
}
function updateSelection(cm) {
cm.display.input.showSelection(cm.display.input.prepareSelection());
}
function prepareSelection(cm, primary) {
if (primary === void 0) primary = true;
var doc = cm.doc,
result = {};
var curFragment = result.cursors = document.createDocumentFragment();
var selFragment = result.selection = document.createDocumentFragment();
for (var i = 0; i < doc.sel.ranges.length; i++) {
if (!primary && i == doc.sel.primIndex) {
continue
}
var range$$1 = doc.sel.ranges[i];
if (range$$1.from().line >= cm.display.viewTo || range$$1.to().line < cm.display.viewFrom) {
continue
}
var collapsed = range$$1.empty();
if (collapsed || cm.options.showCursorWhenSelecting) {
drawSelectionCursor(cm, range$$1.head, curFragment);
}
if (!collapsed) {
drawSelectionRange(cm, range$$1, selFragment);
}
}
return result
}
// Draws a cursor for the given range
function drawSelectionCursor(cm, head, output) {
var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine);
var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
cursor.style.left = pos.left + "px";
cursor.style.top = pos.top + "px";
cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
if (pos.other) {
// Secondary cursor, shown when on a 'jump' in bi-directional text
var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
otherCursor.style.display = "";
otherCursor.style.left = pos.other.left + "px";
otherCursor.style.top = pos.other.top + "px";
otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
}
}
function cmpCoords(a, b) {
return a.top - b.top || a.left - b.left
}
// Draws the given range as a highlighted selection
function drawSelectionRange(cm, range$$1, output) {
var display = cm.display,
doc = cm.doc;
var fragment = document.createDocumentFragment();
var padding = paddingH(cm.display),
leftSide = padding.left;
var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right;
var docLTR = doc.direction == "ltr";
function add(left, top, width, bottom) {
if (top < 0) {
top = 0;
}
top = Math.round(top);
bottom = Math.round(bottom);
fragment.appendChild(elt("div", null, "CodeMirror-selected", ("position: absolute; left: " + left + "px;\n top: " + top + "px; width: " + (width == null ? rightSide - left : width) + "px;\n height: " + (bottom - top) + "px")));
}
function drawForLine(line, fromArg, toArg) {
var lineObj = getLine(doc, line);
var lineLen = lineObj.text.length;
var start, end;
function coords(ch, bias) {
return charCoords(cm, Pos(line, ch), "div", lineObj, bias)
}
function wrapX(pos, dir, side) {
var extent = wrappedLineExtentChar(cm, lineObj, null, pos);
var prop = (dir == "ltr") == (side == "after") ? "left" : "right";
var ch = side == "after" ? extent.begin : extent.end - (/\s/.test(lineObj.text.charAt(extent.end - 1)) ? 2 : 1);
return coords(ch, prop)[prop]
}
var order = getOrder(lineObj, doc.direction);
iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir, i) {
var ltr = dir == "ltr";
var fromPos = coords(from, ltr ? "left" : "right");
var toPos = coords(to - 1, ltr ? "right" : "left");
var openStart = fromArg == null && from == 0,
openEnd = toArg == null && to == lineLen;
var first = i == 0,
last = !order || i == order.length - 1;
if (toPos.top - fromPos.top <= 3) { // Single line
var openLeft = (docLTR ? openStart : openEnd) && first;
var openRight = (docLTR ? openEnd : openStart) && last;
var left = openLeft ? leftSide : (ltr ? fromPos : toPos).left;
var right = openRight ? rightSide : (ltr ? toPos : fromPos).right;
add(left, fromPos.top, right - left, fromPos.bottom);
} else { // Multiple lines
var topLeft, topRight, botLeft, botRight;
if (ltr) {
topLeft = docLTR && openStart && first ? leftSide : fromPos.left;
topRight = docLTR ? rightSide : wrapX(from, dir, "before");
botLeft = docLTR ? leftSide : wrapX(to, dir, "after");
botRight = docLTR && openEnd && last ? rightSide : toPos.right;
} else {
topLeft = !docLTR ? leftSide : wrapX(from, dir, "before");
topRight = !docLTR && openStart && first ? rightSide : fromPos.right;
botLeft = !docLTR && openEnd && last ? leftSide : toPos.left;
botRight = !docLTR ? rightSide : wrapX(to, dir, "after");
}
add(topLeft, fromPos.top, topRight - topLeft, fromPos.bottom);
if (fromPos.bottom < toPos.top) {
add(leftSide, fromPos.bottom, null, toPos.top);
}
add(botLeft, toPos.top, botRight - botLeft, toPos.bottom);
}
if (!start || cmpCoords(fromPos, start) < 0) {
start = fromPos;
}
if (cmpCoords(toPos, start) < 0) {
start = toPos;
}
if (!end || cmpCoords(fromPos, end) < 0) {
end = fromPos;
}
if (cmpCoords(toPos, end) < 0) {
end = toPos;
}
});
return {
start: start,
end: end
}
}
var sFrom = range$$1.from(),
sTo = range$$1.to();
if (sFrom.line == sTo.line) {
drawForLine(sFrom.line, sFrom.ch, sTo.ch);
} else {
var fromLine = getLine(doc, sFrom.line),
toLine = getLine(doc, sTo.line);
var singleVLine = visualLine(fromLine) == visualLine(toLine);
var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
if (singleVLine) {
if (leftEnd.top < rightStart.top - 2) {
add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
} else {
add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
}
}
if (leftEnd.bottom < rightStart.top) {
add(leftSide, leftEnd.bottom, null, rightStart.top);
}
}
output.appendChild(fragment);
}
// Cursor-blinking
function restartBlink(cm) {
if (!cm.state.focused) {
return
}
var display = cm.display;
clearInterval(display.blinker);
var on = true;
display.cursorDiv.style.visibility = "";
if (cm.options.cursorBlinkRate > 0) {
display.blinker = setInterval(function () {
return display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden";
},
cm.options.cursorBlinkRate);
} else if (cm.options.cursorBlinkRate < 0) {
display.cursorDiv.style.visibility = "hidden";
}
}
function ensureFocus(cm) {
if (!cm.state.focused) {
cm.display.input.focus();
onFocus(cm);
}
}
function delayBlurEvent(cm) {
cm.state.delayingBlurEvent = true;
setTimeout(function () {
if (cm.state.delayingBlurEvent) {
cm.state.delayingBlurEvent = false;
onBlur(cm);
}
}, 100);
}
function onFocus(cm, e) {
if (cm.state.delayingBlurEvent) {
cm.state.delayingBlurEvent = false;
}
if (cm.options.readOnly == "nocursor") {
return
}
if (!cm.state.focused) {
signal(cm, "focus", cm, e);
cm.state.focused = true;
addClass(cm.display.wrapper, "CodeMirror-focused");
// This test prevents this from firing when a context
// menu is closed (since the input reset would kill the
// select-all detection hack)
if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {
cm.display.input.reset();
if (webkit) {
setTimeout(function () {
return cm.display.input.reset(true);
}, 20);
} // Issue #1730
}
cm.display.input.receivedFocus();
}
restartBlink(cm);
}
function onBlur(cm, e) {
if (cm.state.delayingBlurEvent) {
return
}
if (cm.state.focused) {
signal(cm, "blur", cm, e);
cm.state.focused = false;
rmClass(cm.display.wrapper, "CodeMirror-focused");
}
clearInterval(cm.display.blinker);
setTimeout(function () {
if (!cm.state.focused) {
cm.display.shift = false;
}
}, 150);
}
// Read the actual heights of the rendered lines, and update their
// stored heights to match.
function updateHeightsInViewport(cm) {
var display = cm.display;
var prevBottom = display.lineDiv.offsetTop;
for (var i = 0; i < display.view.length; i++) {
var cur = display.view[i],
wrapping = cm.options.lineWrapping;
var height = (void 0),
width = 0;
if (cur.hidden) {
continue
}
if (ie && ie_version < 8) {
var bot = cur.node.offsetTop + cur.node.offsetHeight;
height = bot - prevBottom;
prevBottom = bot;
} else {
var box = cur.node.getBoundingClientRect();
height = box.bottom - box.top;
// Check that lines don't extend past the right of the current
// editor width
if (!wrapping && cur.text.firstChild) {
width = cur.text.firstChild.getBoundingClientRect().right - box.left - 1;
}
}
var diff = cur.line.height - height;
if (height < 2) {
height = textHeight(display);
}
if (diff > .005 || diff < -.005) {
updateLineHeight(cur.line, height);
updateWidgetHeight(cur.line);
if (cur.rest) {
for (var j = 0; j < cur.rest.length; j++) {
updateWidgetHeight(cur.rest[j]);
}
}
}
if (width > cm.display.sizerWidth) {
var chWidth = Math.ceil(width / charWidth(cm.display));
if (chWidth > cm.display.maxLineLength) {
cm.display.maxLineLength = chWidth;
cm.display.maxLine = cur.line;
cm.display.maxLineChanged = true;
}
}
}
}
// Read and store the height of line widgets associated with the
// given line.
function updateWidgetHeight(line) {
if (line.widgets) {
for (var i = 0; i < line.widgets.length; ++i) {
var w = line.widgets[i],
parent = w.node.parentNode;
if (parent) {
w.height = parent.offsetHeight;
}
}
}
}
// Compute the lines that are visible in a given viewport (defaults
// the the current scroll position). viewport may contain top,
// height, and ensure (see op.scrollToPos) properties.
function visibleLines(display, doc, viewport) {
var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop;
top = Math.floor(top - paddingTop(display));
var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight;
var from = lineAtHeight(doc, top),
to = lineAtHeight(doc, bottom);
// Ensure is a {from: {line, ch}, to: {line, ch}} object, and
// forces those lines into the viewport (if possible).
if (viewport && viewport.ensure) {
var ensureFrom = viewport.ensure.from.line,
ensureTo = viewport.ensure.to.line;
if (ensureFrom < from) {
from = ensureFrom;
to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight);
} else if (Math.min(ensureTo, doc.lastLine()) >= to) {
from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight);
to = ensureTo;
}
}
return {
from: from,
to: Math.max(to, from + 1)
}
}
// Re-align line numbers and gutter marks to compensate for
// horizontal scrolling.
function alignHorizontally(cm) {
var display = cm.display,
view = display.view;
if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) {
return
}
var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
var gutterW = display.gutters.offsetWidth,
left = comp + "px";
for (var i = 0; i < view.length; i++) {
if (!view[i].hidden) {
if (cm.options.fixedGutter) {
if (view[i].gutter) {
view[i].gutter.style.left = left;
}
if (view[i].gutterBackground) {
view[i].gutterBackground.style.left = left;
}
}
var align = view[i].alignable;
if (align) {
for (var j = 0; j < align.length; j++) {
align[j].style.left = left;
}
}
}
}
if (cm.options.fixedGutter) {
display.gutters.style.left = (comp + gutterW) + "px";
}
}
// Used to ensure that the line number gutter is still the right
// size for the current document size. Returns true when an update
// is needed.
function maybeUpdateLineNumberWidth(cm) {
if (!cm.options.lineNumbers) {
return false
}
var doc = cm.doc,
last = lineNumberFor(cm.options, doc.first + doc.size - 1),
display = cm.display;
if (last.length != display.lineNumChars) {
var test = display.measure.appendChild(elt("div", [elt("div", last)],
"CodeMirror-linenumber CodeMirror-gutter-elt"));
var innerW = test.firstChild.offsetWidth,
padding = test.offsetWidth - innerW;
display.lineGutter.style.width = "";
display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1;
display.lineNumWidth = display.lineNumInnerWidth + padding;
display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
display.lineGutter.style.width = display.lineNumWidth + "px";
updateGutterSpace(cm);
return true
}
return false
}
// SCROLLING THINGS INTO VIEW
// If an editor sits on the top or bottom of the window, partially
// scrolled out of view, this ensures that the cursor is visible.
function maybeScrollWindow(cm, rect) {
if (signalDOMEvent(cm, "scrollCursorIntoView")) {
return
}
var display = cm.display,
box = display.sizer.getBoundingClientRect(),
doScroll = null;
if (rect.top + box.top < 0) {
doScroll = true;
} else if (rect.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) {
doScroll = false;
}
if (doScroll != null && !phantom) {
var scrollNode = elt("div", "\u200b", null, ("position: absolute;\n top: " + (rect.top - display.viewOffset - paddingTop(cm.display)) + "px;\n height: " + (rect.bottom - rect.top + scrollGap(cm) + display.barHeight) + "px;\n left: " + (rect.left) + "px; width: " + (Math.max(2, rect.right - rect.left)) + "px;"));
cm.display.lineSpace.appendChild(scrollNode);
scrollNode.scrollIntoView(doScroll);
cm.display.lineSpace.removeChild(scrollNode);
}
}
// Scroll a given position into view (immediately), verifying that
// it actually became visible (as line heights are accurately
// measured, the position of something may 'drift' during drawing).
function scrollPosIntoView(cm, pos, end, margin) {
if (margin == null) {
margin = 0;
}
var rect;
if (!cm.options.lineWrapping && pos == end) {
// Set pos and end to the cursor positions around the character pos sticks to
// If pos.sticky == "before", that is around pos.ch - 1, otherwise around pos.ch
// If pos == Pos(_, 0, "before"), pos and end are unchanged
pos = pos.ch ? Pos(pos.line, pos.sticky == "before" ? pos.ch - 1 : pos.ch, "after") : pos;
end = pos.sticky == "before" ? Pos(pos.line, pos.ch + 1, "before") : pos;
}
for (var limit = 0; limit < 5; limit++) {
var changed = false;
var coords = cursorCoords(cm, pos);
var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
rect = {
left: Math.min(coords.left, endCoords.left),
top: Math.min(coords.top, endCoords.top) - margin,
right: Math.max(coords.left, endCoords.left),
bottom: Math.max(coords.bottom, endCoords.bottom) + margin
};
var scrollPos = calculateScrollPos(cm, rect);
var startTop = cm.doc.scrollTop,
startLeft = cm.doc.scrollLeft;
if (scrollPos.scrollTop != null) {
updateScrollTop(cm, scrollPos.scrollTop);
if (Math.abs(cm.doc.scrollTop - startTop) > 1) {
changed = true;
}
}
if (scrollPos.scrollLeft != null) {
setScrollLeft(cm, scrollPos.scrollLeft);
if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) {
changed = true;
}
}
if (!changed) {
break
}
}
return rect
}
// Scroll a given set of coordinates into view (immediately).
function scrollIntoView(cm, rect) {
var scrollPos = calculateScrollPos(cm, rect);
if (scrollPos.scrollTop != null) {
updateScrollTop(cm, scrollPos.scrollTop);
}
if (scrollPos.scrollLeft != null) {
setScrollLeft(cm, scrollPos.scrollLeft);
}
}
// Calculate a new scroll position needed to scroll the given
// rectangle into view. Returns an object with scrollTop and
// scrollLeft properties. When these are undefined, the
// vertical/horizontal position does not need to be adjusted.
function calculateScrollPos(cm, rect) {
var display = cm.display,
snapMargin = textHeight(cm.display);
if (rect.top < 0) {
rect.top = 0;
}
var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
var screen = displayHeight(cm),
result = {};
if (rect.bottom - rect.top > screen) {
rect.bottom = rect.top + screen;
}
var docBottom = cm.doc.height + paddingVert(display);
var atTop = rect.top < snapMargin,
atBottom = rect.bottom > docBottom - snapMargin;
if (rect.top < screentop) {
result.scrollTop = atTop ? 0 : rect.top;
} else if (rect.bottom > screentop + screen) {
var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen);
if (newTop != screentop) {
result.scrollTop = newTop;
}
}
var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;
var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0);
var tooWide = rect.right - rect.left > screenw;
if (tooWide) {
rect.right = rect.left + screenw;
}
if (rect.left < 10) {
result.scrollLeft = 0;
} else if (rect.left < screenleft) {
result.scrollLeft = Math.max(0, rect.left - (tooWide ? 0 : 10));
} else if (rect.right > screenw + screenleft - 3) {
result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw;
}
return result
}
// Store a relative adjustment to the scroll position in the current
// operation (to be applied when the operation finishes).
function addToScrollTop(cm, top) {
if (top == null) {
return
}
resolveScrollToPos(cm);
cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;
}
// Make sure that at the end of the operation the current cursor is
// shown.
function ensureCursorVisible(cm) {
resolveScrollToPos(cm);
var cur = cm.getCursor();
cm.curOp.scrollToPos = {
from: cur,
to: cur,
margin: cm.options.cursorScrollMargin
};
}
function scrollToCoords(cm, x, y) {
if (x != null || y != null) {
resolveScrollToPos(cm);
}
if (x != null) {
cm.curOp.scrollLeft = x;
}
if (y != null) {
cm.curOp.scrollTop = y;
}
}
function scrollToRange(cm, range$$1) {
resolveScrollToPos(cm);
cm.curOp.scrollToPos = range$$1;
}
// When an operation has its scrollToPos property set, and another
// scroll action is applied before the end of the operation, this
// 'simulates' scrolling that position into view in a cheap way, so
// that the effect of intermediate scroll commands is not ignored.
function resolveScrollToPos(cm) {
var range$$1 = cm.curOp.scrollToPos;
if (range$$1) {
cm.curOp.scrollToPos = null;
var from = estimateCoords(cm, range$$1.from),
to = estimateCoords(cm, range$$1.to);
scrollToCoordsRange(cm, from, to, range$$1.margin);
}
}
function scrollToCoordsRange(cm, from, to, margin) {
var sPos = calculateScrollPos(cm, {
left: Math.min(from.left, to.left),
top: Math.min(from.top, to.top) - margin,
right: Math.max(from.right, to.right),
bottom: Math.max(from.bottom, to.bottom) + margin
});
scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop);
}
// Sync the scrollable area and scrollbars, ensure the viewport
// covers the visible area.
function updateScrollTop(cm, val) {
if (Math.abs(cm.doc.scrollTop - val) < 2) {
return
}
if (!gecko) {
updateDisplaySimple(cm, {
top: val
});
}
setScrollTop(cm, val, true);
if (gecko) {
updateDisplaySimple(cm);
}
startWorker(cm, 100);
}
function setScrollTop(cm, val, forceScroll) {
val = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val);
if (cm.display.scroller.scrollTop == val && !forceScroll) {
return
}
cm.doc.scrollTop = val;
cm.display.scrollbars.setScrollTop(val);
if (cm.display.scroller.scrollTop != val) {
cm.display.scroller.scrollTop = val;
}
}
// Sync scroller and scrollbar, ensure the gutter elements are
// aligned.
function setScrollLeft(cm, val, isScroller, forceScroll) {
val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);
if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) {
return
}
cm.doc.scrollLeft = val;
alignHorizontally(cm);
if (cm.display.scroller.scrollLeft != val) {
cm.display.scroller.scrollLeft = val;
}
cm.display.scrollbars.setScrollLeft(val);
}
// SCROLLBARS
// Prepare DOM reads needed to update the scrollbars. Done in one
// shot to minimize update/measure roundtrips.
function measureForScrollbars(cm) {
var d = cm.display,
gutterW = d.gutters.offsetWidth;
var docH = Math.round(cm.doc.height + paddingVert(cm.display));
return {
clientHeight: d.scroller.clientHeight,
viewHeight: d.wrapper.clientHeight,
scrollWidth: d.scroller.scrollWidth,
clientWidth: d.scroller.clientWidth,
viewWidth: d.wrapper.clientWidth,
barLeft: cm.options.fixedGutter ? gutterW : 0,
docHeight: docH,
scrollHeight: docH + scrollGap(cm) + d.barHeight,
nativeBarWidth: d.nativeBarWidth,
gutterWidth: gutterW
}
}
var NativeScrollbars = function (place, scroll, cm) {
this.cm = cm;
var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
vert.tabIndex = horiz.tabIndex = -1;
place(vert);
place(horiz);
on(vert, "scroll", function () {
if (vert.clientHeight) {
scroll(vert.scrollTop, "vertical");
}
});
on(horiz, "scroll", function () {
if (horiz.clientWidth) {
scroll(horiz.scrollLeft, "horizontal");
}
});
this.checkedZeroWidth = false;
// Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
if (ie && ie_version < 8) {
this.horiz.style.minHeight = this.vert.style.minWidth = "18px";
}
};
NativeScrollbars.prototype.update = function (measure) {
var needsH = measure.scrollWidth > measure.clientWidth + 1;
var needsV = measure.scrollHeight > measure.clientHeight + 1;
var sWidth = measure.nativeBarWidth;
if (needsV) {
this.vert.style.display = "block";
this.vert.style.bottom = needsH ? sWidth + "px" : "0";
var totalHeight = measure.viewHeight - (needsH ? sWidth : 0);
// A bug in IE8 can cause this value to be negative, so guard it.
this.vert.firstChild.style.height =
Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px";
} else {
this.vert.style.display = "";
this.vert.firstChild.style.height = "0";
}
if (needsH) {
this.horiz.style.display = "block";
this.horiz.style.right = needsV ? sWidth + "px" : "0";
this.horiz.style.left = measure.barLeft + "px";
var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0);
this.horiz.firstChild.style.width =
Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + "px";
} else {
this.horiz.style.display = "";
this.horiz.firstChild.style.width = "0";
}
if (!this.checkedZeroWidth && measure.clientHeight > 0) {
if (sWidth == 0) {
this.zeroWidthHack();
}
this.checkedZeroWidth = true;
}
return {
right: needsV ? sWidth : 0,
bottom: needsH ? sWidth : 0
}
};
NativeScrollbars.prototype.setScrollLeft = function (pos) {
if (this.horiz.scrollLeft != pos) {
this.horiz.scrollLeft = pos;
}
if (this.disableHoriz) {
this.enableZeroWidthBar(this.horiz, this.disableHoriz, "horiz");
}
};
NativeScrollbars.prototype.setScrollTop = function (pos) {
if (this.vert.scrollTop != pos) {
this.vert.scrollTop = pos;
}
if (this.disableVert) {
this.enableZeroWidthBar(this.vert, this.disableVert, "vert");
}
};
NativeScrollbars.prototype.zeroWidthHack = function () {
var w = mac && !mac_geMountainLion ? "12px" : "18px";
this.horiz.style.height = this.vert.style.width = w;
this.horiz.style.pointerEvents = this.vert.style.pointerEvents = "none";
this.disableHoriz = new Delayed;
this.disableVert = new Delayed;
};
NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) {
bar.style.pointerEvents = "auto";
function maybeDisable() {
// To find out whether the scrollbar is still visible, we
// check whether the element under the pixel in the bottom
// right corner of the scrollbar box is the scrollbar box
// itself (when the bar is still visible) or its filler child
// (when the bar is hidden). If it is still visible, we keep
// it enabled, if it's hidden, we disable pointer events.
var box = bar.getBoundingClientRect();
var elt$$1 = type == "vert" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2) :
document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1);
if (elt$$1 != bar) {
bar.style.pointerEvents = "none";
} else {
delay.set(1000, maybeDisable);
}
}
delay.set(1000, maybeDisable);
};
NativeScrollbars.prototype.clear = function () {
var parent = this.horiz.parentNode;
parent.removeChild(this.horiz);
parent.removeChild(this.vert);
};
var NullScrollbars = function () {};
NullScrollbars.prototype.update = function () {
return {
bottom: 0,
right: 0
}
};
NullScrollbars.prototype.setScrollLeft = function () {};
NullScrollbars.prototype.setScrollTop = function () {};
NullScrollbars.prototype.clear = function () {};
function updateScrollbars(cm, measure) {
if (!measure) {
measure = measureForScrollbars(cm);
}
var startWidth = cm.display.barWidth,
startHeight = cm.display.barHeight;
updateScrollbarsInner(cm, measure);
for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {
if (startWidth != cm.display.barWidth && cm.options.lineWrapping) {
updateHeightsInViewport(cm);
}
updateScrollbarsInner(cm, measureForScrollbars(cm));
startWidth = cm.display.barWidth;
startHeight = cm.display.barHeight;
}
}
// Re-synchronize the fake scrollbars with the actual size of the
// content.
function updateScrollbarsInner(cm, measure) {
var d = cm.display;
var sizes = d.scrollbars.update(measure);
d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px";
d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px";
d.heightForcer.style.borderBottom = sizes.bottom + "px solid transparent";
if (sizes.right && sizes.bottom) {
d.scrollbarFiller.style.display = "block";
d.scrollbarFiller.style.height = sizes.bottom + "px";
d.scrollbarFiller.style.width = sizes.right + "px";
} else {
d.scrollbarFiller.style.display = "";
}
if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
d.gutterFiller.style.display = "block";
d.gutterFiller.style.height = sizes.bottom + "px";
d.gutterFiller.style.width = measure.gutterWidth + "px";
} else {
d.gutterFiller.style.display = "";
}
}
var scrollbarModel = {
"native": NativeScrollbars,
"null": NullScrollbars
};
function initScrollbars(cm) {
if (cm.display.scrollbars) {
cm.display.scrollbars.clear();
if (cm.display.scrollbars.addClass) {
rmClass(cm.display.wrapper, cm.display.scrollbars.addClass);
}
}
cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) {
cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller);
// Prevent clicks in the scrollbars from killing focus
on(node, "mousedown", function () {
if (cm.state.focused) {
setTimeout(function () {
return cm.display.input.focus();
}, 0);
}
});
node.setAttribute("cm-not-content", "true");
}, function (pos, axis) {
if (axis == "horizontal") {
setScrollLeft(cm, pos);
} else {
updateScrollTop(cm, pos);
}
}, cm);
if (cm.display.scrollbars.addClass) {
addClass(cm.display.wrapper, cm.display.scrollbars.addClass);
}
}
// Operations are used to wrap a series of changes to the editor
// state in such a way that each change won't have to update the
// cursor and display (which would be awkward, slow, and
// error-prone). Instead, display updates are batched and then all
// combined and executed at once.
var nextOpId = 0;
// Start a new operation.
function startOperation(cm) {
cm.curOp = {
cm: cm,
viewChanged: false, // Flag that indicates that lines might need to be redrawn
startHeight: cm.doc.height, // Used to detect need to update scrollbar
forceUpdate: false, // Used to force a redraw
updateInput: 0, // Whether to reset the input textarea
typing: false, // Whether this reset should be careful to leave existing text (for compositing)
changeObjs: null, // Accumulated changes, for firing change events
cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already
selectionChanged: false, // Whether the selection needs to be redrawn
updateMaxLine: false, // Set when the widest line needs to be determined anew
scrollLeft: null,
scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
scrollToPos: null, // Used to scroll to a specific position
focus: false,
id: ++nextOpId // Unique ID
};
pushOperation(cm.curOp);
}
// Finish an operation, updating the display and signalling delayed events
function endOperation(cm) {
var op = cm.curOp;
if (op) {
finishOperation(op, function (group) {
for (var i = 0; i < group.ops.length; i++) {
group.ops[i].cm.curOp = null;
}
endOperations(group);
});
}
}
// The DOM updates done when an operation finishes are batched so
// that the minimum number of relayouts are required.
function endOperations(group) {
var ops = group.ops;
for (var i = 0; i < ops.length; i++) // Read DOM
{
endOperation_R1(ops[i]);
}
for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe)
{
endOperation_W1(ops[i$1]);
}
for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM
{
endOperation_R2(ops[i$2]);
}
for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe)
{
endOperation_W2(ops[i$3]);
}
for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM
{
endOperation_finish(ops[i$4]);
}
}
function endOperation_R1(op) {
var cm = op.cm,
display = cm.display;
maybeClipScrollbars(cm);
if (op.updateMaxLine) {
findMaxLine(cm);
}
op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||
op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
op.scrollToPos.to.line >= display.viewTo) ||
display.maxLineChanged && cm.options.lineWrapping;
op.update = op.mustUpdate &&
new DisplayUpdate(cm, op.mustUpdate && {
top: op.scrollTop,
ensure: op.scrollToPos
}, op.forceUpdate);
}
function endOperation_W1(op) {
op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update);
}
function endOperation_R2(op) {
var cm = op.cm,
display = cm.display;
if (op.updatedDisplay) {
updateHeightsInViewport(cm);
}
op.barMeasure = measureForScrollbars(cm);
// If the max line changed since it was last measured, measure it,
// and ensure the document's width matches it.
// updateDisplay_W2 will use these properties to do the actual resizing
if (display.maxLineChanged && !cm.options.lineWrapping) {
op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3;
cm.display.sizerWidth = op.adjustWidthTo;
op.barMeasure.scrollWidth =
Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth);
op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm));
}
if (op.updatedDisplay || op.selectionChanged) {
op.preparedSelection = display.input.prepareSelection();
}
}
function endOperation_W2(op) {
var cm = op.cm;
if (op.adjustWidthTo != null) {
cm.display.sizer.style.minWidth = op.adjustWidthTo + "px";
if (op.maxScrollLeft < cm.doc.scrollLeft) {
setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true);
}
cm.display.maxLineChanged = false;
}
var takeFocus = op.focus && op.focus == activeElt();
if (op.preparedSelection) {
cm.display.input.showSelection(op.preparedSelection, takeFocus);
}
if (op.updatedDisplay || op.startHeight != cm.doc.height) {
updateScrollbars(cm, op.barMeasure);
}
if (op.updatedDisplay) {
setDocumentHeight(cm, op.barMeasure);
}
if (op.selectionChanged) {
restartBlink(cm);
}
if (cm.state.focused && op.updateInput) {
cm.display.input.reset(op.typing);
}
if (takeFocus) {
ensureFocus(op.cm);
}
}
function endOperation_finish(op) {
var cm = op.cm,
display = cm.display,
doc = cm.doc;
if (op.updatedDisplay) {
postUpdateDisplay(cm, op.update);
}
// Abort mouse wheel delta measurement, when scrolling explicitly
if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos)) {
display.wheelStartX = display.wheelStartY = null;
}
// Propagate the scroll position to the actual DOM scroller
if (op.scrollTop != null) {
setScrollTop(cm, op.scrollTop, op.forceScroll);
}
if (op.scrollLeft != null) {
setScrollLeft(cm, op.scrollLeft, true, true);
}
// If we need to scroll a specific position into view, do so.
if (op.scrollToPos) {
var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin);
maybeScrollWindow(cm, rect);
}
// Fire events for markers that are hidden/unidden by editing or
// undoing
var hidden = op.maybeHiddenMarkers,
unhidden = op.maybeUnhiddenMarkers;
if (hidden) {
for (var i = 0; i < hidden.length; ++i) {
if (!hidden[i].lines.length) {
signal(hidden[i], "hide");
}
}
}
if (unhidden) {
for (var i$1 = 0; i$1 < unhidden.length; ++i$1) {
if (unhidden[i$1].lines.length) {
signal(unhidden[i$1], "unhide");
}
}
}
if (display.wrapper.offsetHeight) {
doc.scrollTop = cm.display.scroller.scrollTop;
}
// Fire change events, and delayed event handlers
if (op.changeObjs) {
signal(cm, "changes", cm, op.changeObjs);
}
if (op.update) {
op.update.finish();
}
}
// Run the given function in an operation
function runInOp(cm, f) {
if (cm.curOp) {
return f()
}
startOperation(cm);
try {
return f()
} finally {
endOperation(cm);
}
}
// Wraps a function in an operation. Returns the wrapped function.
function operation(cm, f) {
return function () {
if (cm.curOp) {
return f.apply(cm, arguments)
}
startOperation(cm);
try {
return f.apply(cm, arguments)
} finally {
endOperation(cm);
}
}
}
// Used to add methods to editor and doc instances, wrapping them in
// operations.
function methodOp(f) {
return function () {
if (this.curOp) {
return f.apply(this, arguments)
}
startOperation(this);
try {
return f.apply(this, arguments)
} finally {
endOperation(this);
}
}
}
function docMethodOp(f) {
return function () {
var cm = this.cm;
if (!cm || cm.curOp) {
return f.apply(this, arguments)
}
startOperation(cm);
try {
return f.apply(this, arguments)
} finally {
endOperation(cm);
}
}
}
// Updates the display.view data structure for a given change to the
// document. From and to are in pre-change coordinates. Lendiff is
// the amount of lines added or subtracted by the change. This is
// used for changes that span multiple lines, or change the way
// lines are divided into visual lines. regLineChange (below)
// registers single-line changes.
function regChange(cm, from, to, lendiff) {
if (from == null) {
from = cm.doc.first;
}
if (to == null) {
to = cm.doc.first + cm.doc.size;
}
if (!lendiff) {
lendiff = 0;
}
var display = cm.display;
if (lendiff && to < display.viewTo &&
(display.updateLineNumbers == null || display.updateLineNumbers > from)) {
display.updateLineNumbers = from;
}
cm.curOp.viewChanged = true;
if (from >= display.viewTo) { // Change after
if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo) {
resetView(cm);
}
} else if (to <= display.viewFrom) { // Change before
if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
resetView(cm);
} else {
display.viewFrom += lendiff;
display.viewTo += lendiff;
}
} else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
resetView(cm);
} else if (from <= display.viewFrom) { // Top overlap
var cut = viewCuttingPoint(cm, to, to + lendiff, 1);
if (cut) {
display.view = display.view.slice(cut.index);
display.viewFrom = cut.lineN;
display.viewTo += lendiff;
} else {
resetView(cm);
}
} else if (to >= display.viewTo) { // Bottom overlap
var cut$1 = viewCuttingPoint(cm, from, from, -1);
if (cut$1) {
display.view = display.view.slice(0, cut$1.index);
display.viewTo = cut$1.lineN;
} else {
resetView(cm);
}
} else { // Gap in the middle
var cutTop = viewCuttingPoint(cm, from, from, -1);
var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);
if (cutTop && cutBot) {
display.view = display.view.slice(0, cutTop.index)
.concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
.concat(display.view.slice(cutBot.index));
display.viewTo += lendiff;
} else {
resetView(cm);
}
}
var ext = display.externalMeasured;
if (ext) {
if (to < ext.lineN) {
ext.lineN += lendiff;
} else if (from < ext.lineN + ext.size) {
display.externalMeasured = null;
}
}
}
// Register a change to a single line. Type must be one of "text",
// "gutter", "class", "widget"
function regLineChange(cm, line, type) {
cm.curOp.viewChanged = true;
var display = cm.display,
ext = cm.display.externalMeasured;
if (ext && line >= ext.lineN && line < ext.lineN + ext.size) {
display.externalMeasured = null;
}
if (line < display.viewFrom || line >= display.viewTo) {
return
}
var lineView = display.view[findViewIndex(cm, line)];
if (lineView.node == null) {
return
}
var arr = lineView.changes || (lineView.changes = []);
if (indexOf(arr, type) == -1) {
arr.push(type);
}
}
// Clear the view.
function resetView(cm) {
cm.display.viewFrom = cm.display.viewTo = cm.doc.first;
cm.display.view = [];
cm.display.viewOffset = 0;
}
function viewCuttingPoint(cm, oldN, newN, dir) {
var index = findViewIndex(cm, oldN),
diff, view = cm.display.view;
if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size) {
return {
index: index,
lineN: newN
}
}
var n = cm.display.viewFrom;
for (var i = 0; i < index; i++) {
n += view[i].size;
}
if (n != oldN) {
if (dir > 0) {
if (index == view.length - 1) {
return null
}
diff = (n + view[index].size) - oldN;
index++;
} else {
diff = n - oldN;
}
oldN += diff;
newN += diff;
}
while (visualLineNo(cm.doc, newN) != newN) {
if (index == (dir < 0 ? 0 : view.length - 1)) {
return null
}
newN += dir * view[index - (dir < 0 ? 1 : 0)].size;
index += dir;
}
return {
index: index,
lineN: newN
}
}
// Force the view to cover a given range, adding empty view element
// or clipping off existing ones as needed.
function adjustView(cm, from, to) {
var display = cm.display,
view = display.view;
if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
display.view = buildViewArray(cm, from, to);
display.viewFrom = from;
} else {
if (display.viewFrom > from) {
display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view);
} else if (display.viewFrom < from) {
display.view = display.view.slice(findViewIndex(cm, from));
}
display.viewFrom = from;
if (display.viewTo < to) {
display.view = display.view.concat(buildViewArray(cm, display.viewTo, to));
} else if (display.viewTo > to) {
display.view = display.view.slice(0, findViewIndex(cm, to));
}
}
display.viewTo = to;
}
// Count the number of lines in the view whose DOM representation is
// out of date (or nonexistent).
function countDirtyView(cm) {
var view = cm.display.view,
dirty = 0;
for (var i = 0; i < view.length; i++) {
var lineView = view[i];
if (!lineView.hidden && (!lineView.node || lineView.changes)) {
++dirty;
}
}
return dirty
}
// HIGHLIGHT WORKER
function startWorker(cm, time) {
if (cm.doc.highlightFrontier < cm.display.viewTo) {
cm.state.highlight.set(time, bind(highlightWorker, cm));
}
}
function highlightWorker(cm) {
var doc = cm.doc;
if (doc.highlightFrontier >= cm.display.viewTo) {
return
}
var end = +new Date + cm.options.workTime;
var context = getContextBefore(cm, doc.highlightFrontier);
var changedLines = [];
doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) {
if (context.line >= cm.display.viewFrom) { // Visible
var oldStyles = line.styles;
var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null;
var highlighted = highlightLine(cm, line, context, true);
if (resetState) {
context.state = resetState;
}
line.styles = highlighted.styles;
var oldCls = line.styleClasses,
newCls = highlighted.classes;
if (newCls) {
line.styleClasses = newCls;
} else if (oldCls) {
line.styleClasses = null;
}
var ischange = !oldStyles || oldStyles.length != line.styles.length ||
oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);
for (var i = 0; !ischange && i < oldStyles.length; ++i) {
ischange = oldStyles[i] != line.styles[i];
}
if (ischange) {
changedLines.push(context.line);
}
line.stateAfter = context.save();
context.nextLine();
} else {
if (line.text.length <= cm.options.maxHighlightLength) {
processLine(cm, line.text, context);
}
line.stateAfter = context.line % 5 == 0 ? context.save() : null;
context.nextLine();
}
if (+new Date > end) {
startWorker(cm, cm.options.workDelay);
return true
}
});
doc.highlightFrontier = context.line;
doc.modeFrontier = Math.max(doc.modeFrontier, context.line);
if (changedLines.length) {
runInOp(cm, function () {
for (var i = 0; i < changedLines.length; i++) {
regLineChange(cm, changedLines[i], "text");
}
});
}
}
// DISPLAY DRAWING
var DisplayUpdate = function (cm, viewport, force) {
var display = cm.display;
this.viewport = viewport;
// Store some values that we'll need later (but don't want to force a relayout for)
this.visible = visibleLines(display, cm.doc, viewport);
this.editorIsHidden = !display.wrapper.offsetWidth;
this.wrapperHeight = display.wrapper.clientHeight;
this.wrapperWidth = display.wrapper.clientWidth;
this.oldDisplayWidth = displayWidth(cm);
this.force = force;
this.dims = getDimensions(cm);
this.events = [];
};
DisplayUpdate.prototype.signal = function (emitter, type) {
if (hasHandler(emitter, type)) {
this.events.push(arguments);
}
};
DisplayUpdate.prototype.finish = function () {
var this$1 = this;
for (var i = 0; i < this.events.length; i++) {
signal.apply(null, this$1.events[i]);
}
};
function maybeClipScrollbars(cm) {
var display = cm.display;
if (!display.scrollbarsClipped && display.scroller.offsetWidth) {
display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth;
display.heightForcer.style.height = scrollGap(cm) + "px";
display.sizer.style.marginBottom = -display.nativeBarWidth + "px";
display.sizer.style.borderRightWidth = scrollGap(cm) + "px";
display.scrollbarsClipped = true;
}
}
function selectionSnapshot(cm) {
if (cm.hasFocus()) {
return null
}
var active = activeElt();
if (!active || !contains(cm.display.lineDiv, active)) {
return null
}
var result = {
activeElt: active
};
if (window.getSelection) {
var sel = window.getSelection();
if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) {
result.anchorNode = sel.anchorNode;
result.anchorOffset = sel.anchorOffset;
result.focusNode = sel.focusNode;
result.focusOffset = sel.focusOffset;
}
}
return result
}
function restoreSelection(snapshot) {
if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt()) {
return
}
snapshot.activeElt.focus();
if (snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) {
var sel = window.getSelection(),
range$$1 = document.createRange();
range$$1.setEnd(snapshot.anchorNode, snapshot.anchorOffset);
range$$1.collapse(false);
sel.removeAllRanges();
sel.addRange(range$$1);
sel.extend(snapshot.focusNode, snapshot.focusOffset);
}
}
// Does the actual updating of the line display. Bails out
// (returning false) when there is nothing to be done and forced is
// false.
function updateDisplayIfNeeded(cm, update) {
var display = cm.display,
doc = cm.doc;
if (update.editorIsHidden) {
resetView(cm);
return false
}
// Bail out if the visible area is already rendered and nothing changed.
if (!update.force &&
update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&
(display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&
display.renderedView == display.view && countDirtyView(cm) == 0) {
return false
}
if (maybeUpdateLineNumberWidth(cm)) {
resetView(cm);
update.dims = getDimensions(cm);
}
// Compute a suitable new viewport (from & to)
var end = doc.first + doc.size;
var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first);
var to = Math.min(end, update.visible.to + cm.options.viewportMargin);
if (display.viewFrom < from && from - display.viewFrom < 20) {
from = Math.max(doc.first, display.viewFrom);
}
if (display.viewTo > to && display.viewTo - to < 20) {
to = Math.min(end, display.viewTo);
}
if (sawCollapsedSpans) {
from = visualLineNo(cm.doc, from);
to = visualLineEndNo(cm.doc, to);
}
var different = from != display.viewFrom || to != display.viewTo ||
display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth;
adjustView(cm, from, to);
display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
// Position the mover div to align with the current scroll position
cm.display.mover.style.top = display.viewOffset + "px";
var toUpdate = countDirtyView(cm);
if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&
(display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo)) {
return false
}
// For big changes, we hide the enclosing element during the
// update, since that speeds up the operations on most browsers.
var selSnapshot = selectionSnapshot(cm);
if (toUpdate > 4) {
display.lineDiv.style.display = "none";
}
patchDisplay(cm, display.updateLineNumbers, update.dims);
if (toUpdate > 4) {
display.lineDiv.style.display = "";
}
display.renderedView = display.view;
// There might have been a widget with a focused element that got
// hidden or updated, if so re-focus it.
restoreSelection(selSnapshot);
// Prevent selection and cursors from interfering with the scroll
// width and height.
removeChildren(display.cursorDiv);
removeChildren(display.selectionDiv);
display.gutters.style.height = display.sizer.style.minHeight = 0;
if (different) {
display.lastWrapHeight = update.wrapperHeight;
display.lastWrapWidth = update.wrapperWidth;
startWorker(cm, 400);
}
display.updateLineNumbers = null;
return true
}
function postUpdateDisplay(cm, update) {
var viewport = update.viewport;
for (var first = true;; first = false) {
if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {
// Clip forced viewport to actual scrollable area.
if (viewport && viewport.top != null) {
viewport = {
top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)
};
}
// Updated line heights might result in the drawn area not
// actually covering the viewport. Keep looping until it does.
update.visible = visibleLines(cm.display, cm.doc, viewport);
if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo) {
break
}
}
if (!updateDisplayIfNeeded(cm, update)) {
break
}
updateHeightsInViewport(cm);
var barMeasure = measureForScrollbars(cm);
updateSelection(cm);
updateScrollbars(cm, barMeasure);
setDocumentHeight(cm, barMeasure);
update.force = false;
}
update.signal(cm, "update", cm);
if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {
update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
cm.display.reportedViewFrom = cm.display.viewFrom;
cm.display.reportedViewTo = cm.display.viewTo;
}
}
function updateDisplaySimple(cm, viewport) {
var update = new DisplayUpdate(cm, viewport);
if (updateDisplayIfNeeded(cm, update)) {
updateHeightsInViewport(cm);
postUpdateDisplay(cm, update);
var barMeasure = measureForScrollbars(cm);
updateSelection(cm);
updateScrollbars(cm, barMeasure);
setDocumentHeight(cm, barMeasure);
update.finish();
}
}
// Sync the actual display DOM structure with display.view, removing
// nodes for lines that are no longer in view, and creating the ones
// that are not there yet, and updating the ones that are out of
// date.
function patchDisplay(cm, updateNumbersFrom, dims) {
var display = cm.display,
lineNumbers = cm.options.lineNumbers;
var container = display.lineDiv,
cur = container.firstChild;
function rm(node) {
var next = node.nextSibling;
// Works around a throw-scroll bug in OS X Webkit
if (webkit && mac && cm.display.currentWheelTarget == node) {
node.style.display = "none";
} else {
node.parentNode.removeChild(node);
}
return next
}
var view = display.view,
lineN = display.viewFrom;
// Loop over the elements in the view, syncing cur (the DOM nodes
// in display.lineDiv) with the view as we go.
for (var i = 0; i < view.length; i++) {
var lineView = view[i];
if (lineView.hidden);
else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet
var node = buildLineElement(cm, lineView, lineN, dims);
container.insertBefore(node, cur);
} else { // Already drawn
while (cur != lineView.node) {
cur = rm(cur);
}
var updateNumber = lineNumbers && updateNumbersFrom != null &&
updateNumbersFrom <= lineN && lineView.lineNumber;
if (lineView.changes) {
if (indexOf(lineView.changes, "gutter") > -1) {
updateNumber = false;
}
updateLineForChanges(cm, lineView, lineN, dims);
}
if (updateNumber) {
removeChildren(lineView.lineNumber);
lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
}
cur = lineView.node.nextSibling;
}
lineN += lineView.size;
}
while (cur) {
cur = rm(cur);
}
}
function updateGutterSpace(cm) {
var width = cm.display.gutters.offsetWidth;
cm.display.sizer.style.marginLeft = width + "px";
}
function setDocumentHeight(cm, measure) {
cm.display.sizer.style.minHeight = measure.docHeight + "px";
cm.display.heightForcer.style.top = measure.docHeight + "px";
cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + "px";
}
// Rebuild the gutter elements, ensure the margin to the left of the
// code matches their width.
function updateGutters(cm) {
var gutters = cm.display.gutters,
specs = cm.options.gutters;
removeChildren(gutters);
var i = 0;
for (; i < specs.length; ++i) {
var gutterClass = specs[i];
var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
if (gutterClass == "CodeMirror-linenumbers") {
cm.display.lineGutter = gElt;
gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
}
}
gutters.style.display = i ? "" : "none";
updateGutterSpace(cm);
}
// Make sure the gutters options contains the element
// "CodeMirror-linenumbers" when the lineNumbers option is true.
function setGuttersForLineNumbers(options) {
var found = indexOf(options.gutters, "CodeMirror-linenumbers");
if (found == -1 && options.lineNumbers) {
options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
} else if (found > -1 && !options.lineNumbers) {
options.gutters = options.gutters.slice(0);
options.gutters.splice(found, 1);
}
}
// Since the delta values reported on mouse wheel events are
// unstandardized between browsers and even browser versions, and
// generally horribly unpredictable, this code starts by measuring
// the scroll effect that the first few mouse wheel events have,
// and, from that, detects the way it can convert deltas to pixel
// offsets afterwards.
//
// The reason we want to know the amount a wheel event will scroll
// is that it gives us a chance to update the display before the
// actual scrolling happens, reducing flickering.
var wheelSamples = 0,
wheelPixelsPerUnit = null;
// Fill in a browser-detected starting value on browsers where we
// know one. These don't have to be accurate -- the result of them
// being wrong would just be a slight flicker on the first wheel
// scroll (if it is large enough).
if (ie) {
wheelPixelsPerUnit = -.53;
} else if (gecko) {
wheelPixelsPerUnit = 15;
} else if (chrome) {
wheelPixelsPerUnit = -.7;
} else if (safari) {
wheelPixelsPerUnit = -1 / 3;
}
function wheelEventDelta(e) {
var dx = e.wheelDeltaX,
dy = e.wheelDeltaY;
if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) {
dx = e.detail;
}
if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) {
dy = e.detail;
} else if (dy == null) {
dy = e.wheelDelta;
}
return {
x: dx,
y: dy
}
}
function wheelEventPixels(e) {
var delta = wheelEventDelta(e);
delta.x *= wheelPixelsPerUnit;
delta.y *= wheelPixelsPerUnit;
return delta
}
function onScrollWheel(cm, e) {
var delta = wheelEventDelta(e),
dx = delta.x,
dy = delta.y;
var display = cm.display,
scroll = display.scroller;
// Quit if there's nothing to scroll here
var canScrollX = scroll.scrollWidth > scroll.clientWidth;
var canScrollY = scroll.scrollHeight > scroll.clientHeight;
if (!(dx && canScrollX || dy && canScrollY)) {
return
}
// Webkit browsers on OS X abort momentum scrolls when the target
// of the scroll event is removed from the scrollable element.
// This hack (see related code in patchDisplay) makes sure the
// element is kept around.
if (dy && mac && webkit) {
outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
for (var i = 0; i < view.length; i++) {
if (view[i].node == cur) {
cm.display.currentWheelTarget = cur;
break outer
}
}
}
}
// On some browsers, horizontal scrolling will cause redraws to
// happen before the gutter has been realigned, causing it to
// wriggle around in a most unseemly way. When we have an
// estimated pixels/delta value, we just handle horizontal
// scrolling entirely here. It'll be slightly off from native, but
// better than glitching out.
if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {
if (dy && canScrollY) {
updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * wheelPixelsPerUnit));
}
setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * wheelPixelsPerUnit));
// Only prevent default scrolling if vertical scrolling is
// actually possible. Otherwise, it causes vertical scroll
// jitter on OSX trackpads when deltaX is small and deltaY
// is large (issue #3579)
if (!dy || (dy && canScrollY)) {
e_preventDefault(e);
}
display.wheelStartX = null; // Abort measurement, if in progress
return
}
// 'Project' the visible viewport to cover the area that is being
// scrolled into view (if we know enough to estimate it).
if (dy && wheelPixelsPerUnit != null) {
var pixels = dy * wheelPixelsPerUnit;
var top = cm.doc.scrollTop,
bot = top + display.wrapper.clientHeight;
if (pixels < 0) {
top = Math.max(0, top + pixels - 50);
} else {
bot = Math.min(cm.doc.height, bot + pixels + 50);
}
updateDisplaySimple(cm, {
top: top,
bottom: bot
});
}
if (wheelSamples < 20) {
if (display.wheelStartX == null) {
display.wheelStartX = scroll.scrollLeft;
display.wheelStartY = scroll.scrollTop;
display.wheelDX = dx;
display.wheelDY = dy;
setTimeout(function () {
if (display.wheelStartX == null) {
return
}
var movedX = scroll.scrollLeft - display.wheelStartX;
var movedY = scroll.scrollTop - display.wheelStartY;
var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
(movedX && display.wheelDX && movedX / display.wheelDX);
display.wheelStartX = display.wheelStartY = null;
if (!sample) {
return
}
wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
++wheelSamples;
}, 200);
} else {
display.wheelDX += dx;
display.wheelDY += dy;
}
}
}
// Selection objects are immutable. A new one is created every time
// the selection changes. A selection is one or more non-overlapping
// (and non-touching) ranges, sorted, and an integer that indicates
// which one is the primary selection (the one that's scrolled into
// view, that getCursor returns, etc).
var Selection = function (ranges, primIndex) {
this.ranges = ranges;
this.primIndex = primIndex;
};
Selection.prototype.primary = function () {
return this.ranges[this.primIndex]
};
Selection.prototype.equals = function (other) {
var this$1 = this;
if (other == this) {
return true
}
if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) {
return false
}
for (var i = 0; i < this.ranges.length; i++) {
var here = this$1.ranges[i],
there = other.ranges[i];
if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) {
return false
}
}
return true
};
Selection.prototype.deepCopy = function () {
var this$1 = this;
var out = [];
for (var i = 0; i < this.ranges.length; i++) {
out[i] = new Range(copyPos(this$1.ranges[i].anchor), copyPos(this$1.ranges[i].head));
}
return new Selection(out, this.primIndex)
};
Selection.prototype.somethingSelected = function () {
var this$1 = this;
for (var i = 0; i < this.ranges.length; i++) {
if (!this$1.ranges[i].empty()) {
return true
}
}
return false
};
Selection.prototype.contains = function (pos, end) {
var this$1 = this;
if (!end) {
end = pos;
}
for (var i = 0; i < this.ranges.length; i++) {
var range = this$1.ranges[i];
if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0) {
return i
}
}
return -1
};
var Range = function (anchor, head) {
this.anchor = anchor;
this.head = head;
};
Range.prototype.from = function () {
return minPos(this.anchor, this.head)
};
Range.prototype.to = function () {
return maxPos(this.anchor, this.head)
};
Range.prototype.empty = function () {
return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch
};
// Take an unsorted, potentially overlapping set of ranges, and
// build a selection out of it. 'Consumes' ranges array (modifying
// it).
function normalizeSelection(cm, ranges, primIndex) {
var mayTouch = cm && cm.options.selectionsMayTouch;
var prim = ranges[primIndex];
ranges.sort(function (a, b) {
return cmp(a.from(), b.from());
});
primIndex = indexOf(ranges, prim);
for (var i = 1; i < ranges.length; i++) {
var cur = ranges[i],
prev = ranges[i - 1];
var diff = cmp(prev.to(), cur.from());
if (mayTouch && !cur.empty() ? diff > 0 : diff >= 0) {
var from = minPos(prev.from(), cur.from()),
to = maxPos(prev.to(), cur.to());
var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
if (i <= primIndex) {
--primIndex;
}
ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
}
}
return new Selection(ranges, primIndex)
}
function simpleSelection(anchor, head) {
return new Selection([new Range(anchor, head || anchor)], 0)
}
// Compute the position of the end of a change (its 'to' property
// refers to the pre-change end).
function changeEnd(change) {
if (!change.text) {
return change.to
}
return Pos(change.from.line + change.text.length - 1,
lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0))
}
// Adjust a position to refer to the post-change position of the
// same text, or the end of the change if the change covers it.
function adjustForChange(pos, change) {
if (cmp(pos, change.from) < 0) {
return pos
}
if (cmp(pos, change.to) <= 0) {
return changeEnd(change)
}
var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1,
ch = pos.ch;
if (pos.line == change.to.line) {
ch += changeEnd(change).ch - change.to.ch;
}
return Pos(line, ch)
}
function computeSelAfterChange(doc, change) {
var out = [];
for (var i = 0; i < doc.sel.ranges.length; i++) {
var range = doc.sel.ranges[i];
out.push(new Range(adjustForChange(range.anchor, change),
adjustForChange(range.head, change)));
}
return normalizeSelection(doc.cm, out, doc.sel.primIndex)
}
function offsetPos(pos, old, nw) {
if (pos.line == old.line) {
return Pos(nw.line, pos.ch - old.ch + nw.ch)
} else {
return Pos(nw.line + (pos.line - old.line), pos.ch)
}
}
// Used by replaceSelections to allow moving the selection to the
// start or around the replaced test. Hint may be "start" or "around".
function computeReplacedSel(doc, changes, hint) {
var out = [];
var oldPrev = Pos(doc.first, 0),
newPrev = oldPrev;
for (var i = 0; i < changes.length; i++) {
var change = changes[i];
var from = offsetPos(change.from, oldPrev, newPrev);
var to = offsetPos(changeEnd(change), oldPrev, newPrev);
oldPrev = change.to;
newPrev = to;
if (hint == "around") {
var range = doc.sel.ranges[i],
inv = cmp(range.head, range.anchor) < 0;
out[i] = new Range(inv ? to : from, inv ? from : to);
} else {
out[i] = new Range(from, from);
}
}
return new Selection(out, doc.sel.primIndex)
}
// Used to get the editor into a consistent state again when options change.
function loadMode(cm) {
cm.doc.mode = getMode(cm.options, cm.doc.modeOption);
resetModeState(cm);
}
function resetModeState(cm) {
cm.doc.iter(function (line) {
if (line.stateAfter) {
line.stateAfter = null;
}
if (line.styles) {
line.styles = null;
}
});
cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first;
startWorker(cm, 100);
cm.state.modeGen++;
if (cm.curOp) {
regChange(cm);
}
}
// DOCUMENT DATA STRUCTURE
// By default, updates that start and end at the beginning of a line
// are treated specially, in order to make the association of line
// widgets and marker elements with the text behave more intuitive.
function isWholeLineUpdate(doc, change) {
return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
(!doc.cm || doc.cm.options.wholeLineUpdateBefore)
}
// Perform a change on the document data structure.
function updateDoc(doc, change, markedSpans, estimateHeight$$1) {
function spansFor(n) {
return markedSpans ? markedSpans[n] : null
}
function update(line, text, spans) {
updateLine(line, text, spans, estimateHeight$$1);
signalLater(line, "change", line, change);
}
function linesFor(start, end) {
var result = [];
for (var i = start; i < end; ++i) {
result.push(new Line(text[i], spansFor(i), estimateHeight$$1));
}
return result
}
var from = change.from,
to = change.to,
text = change.text;
var firstLine = getLine(doc, from.line),
lastLine = getLine(doc, to.line);
var lastText = lst(text),
lastSpans = spansFor(text.length - 1),
nlines = to.line - from.line;
// Adjust the line structure
if (change.full) {
doc.insert(0, linesFor(0, text.length));
doc.remove(text.length, doc.size - text.length);
} else if (isWholeLineUpdate(doc, change)) {
// This is a whole-line replace. Treated specially to make
// sure line objects move the way they are supposed to.
var added = linesFor(0, text.length - 1);
update(lastLine, lastLine.text, lastSpans);
if (nlines) {
doc.remove(from.line, nlines);
}
if (added.length) {
doc.insert(from.line, added);
}
} else if (firstLine == lastLine) {
if (text.length == 1) {
update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
} else {
var added$1 = linesFor(1, text.length - 1);
added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight$$1));
update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
doc.insert(from.line + 1, added$1);
}
} else if (text.length == 1) {
update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
doc.remove(from.line + 1, nlines);
} else {
update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
var added$2 = linesFor(1, text.length - 1);
if (nlines > 1) {
doc.remove(from.line + 1, nlines - 1);
}
doc.insert(from.line + 1, added$2);
}
signalLater(doc, "change", doc, change);
}
// Call f for all linked documents.
function linkedDocs(doc, f, sharedHistOnly) {
function propagate(doc, skip, sharedHist) {
if (doc.linked) {
for (var i = 0; i < doc.linked.length; ++i) {
var rel = doc.linked[i];
if (rel.doc == skip) {
continue
}
var shared = sharedHist && rel.sharedHist;
if (sharedHistOnly && !shared) {
continue
}
f(rel.doc, shared);
propagate(rel.doc, doc, shared);
}
}
}
propagate(doc, null, true);
}
// Attach a document to an editor.
function attachDoc(cm, doc) {
if (doc.cm) {
throw new Error("This document is already in use.")
}
cm.doc = doc;
doc.cm = cm;
estimateLineHeights(cm);
loadMode(cm);
setDirectionClass(cm);
if (!cm.options.lineWrapping) {
findMaxLine(cm);
}
cm.options.mode = doc.modeOption;
regChange(cm);
}
function setDirectionClass(cm) {
(cm.doc.direction == "rtl" ? addClass : rmClass)(cm.display.lineDiv, "CodeMirror-rtl");
}
function directionChanged(cm) {
runInOp(cm, function () {
setDirectionClass(cm);
regChange(cm);
});
}
function History(startGen) {
// Arrays of change events and selections. Doing something adds an
// event to done and clears undo. Undoing moves events from done
// to undone, redoing moves them in the other direction.
this.done = [];
this.undone = [];
this.undoDepth = Infinity;
// Used to track when changes can be merged into a single undo
// event
this.lastModTime = this.lastSelTime = 0;
this.lastOp = this.lastSelOp = null;
this.lastOrigin = this.lastSelOrigin = null;
// Used by the isClean() method
this.generation = this.maxGeneration = startGen || 1;
}
// Create a history change event from an updateDoc-style change
// object.
function historyChangeFromChange(doc, change) {
var histChange = {
from: copyPos(change.from),
to: changeEnd(change),
text: getBetween(doc, change.from, change.to)
};
attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
linkedDocs(doc, function (doc) {
return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
}, true);
return histChange
}
// Pop all selection events off the end of a history array. Stop at
// a change event.
function clearSelectionEvents(array) {
while (array.length) {
var last = lst(array);
if (last.ranges) {
array.pop();
} else {
break
}
}
}
// Find the top change event in the history. Pop off selection
// events that are in the way.
function lastChangeEvent(hist, force) {
if (force) {
clearSelectionEvents(hist.done);
return lst(hist.done)
} else if (hist.done.length && !lst(hist.done).ranges) {
return lst(hist.done)
} else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
hist.done.pop();
return lst(hist.done)
}
}
// Register a change in the history. Merges changes that are within
// a single operation, or are close together with an origin that
// allows merging (starting with "+") into a single event.
function addChangeToHistory(doc, change, selAfter, opId) {
var hist = doc.history;
hist.undone.length = 0;
var time = +new Date,
cur;
var last;
if ((hist.lastOp == opId ||
hist.lastOrigin == change.origin && change.origin &&
((change.origin.charAt(0) == "+" && hist.lastModTime > time - (doc.cm ? doc.cm.options.historyEventDelay : 500)) ||
change.origin.charAt(0) == "*")) &&
(cur = lastChangeEvent(hist, hist.lastOp == opId))) {
// Merge this change into the last event
last = lst(cur.changes);
if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
// Optimized case for simple insertion -- don't want to add
// new changesets for every character typed
last.to = changeEnd(change);
} else {
// Add new sub-event
cur.changes.push(historyChangeFromChange(doc, change));
}
} else {
// Can not be merged, start a new event.
var before = lst(hist.done);
if (!before || !before.ranges) {
pushSelectionToHistory(doc.sel, hist.done);
}
cur = {
changes: [historyChangeFromChange(doc, change)],
generation: hist.generation
};
hist.done.push(cur);
while (hist.done.length > hist.undoDepth) {
hist.done.shift();
if (!hist.done[0].ranges) {
hist.done.shift();
}
}
}
hist.done.push(selAfter);
hist.generation = ++hist.maxGeneration;
hist.lastModTime = hist.lastSelTime = time;
hist.lastOp = hist.lastSelOp = opId;
hist.lastOrigin = hist.lastSelOrigin = change.origin;
if (!last) {
signal(doc, "historyAdded");
}
}
function selectionEventCanBeMerged(doc, origin, prev, sel) {
var ch = origin.charAt(0);
return ch == "*" ||
ch == "+" &&
prev.ranges.length == sel.ranges.length &&
prev.somethingSelected() == sel.somethingSelected() &&
new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500)
}
// Called whenever the selection changes, sets the new selection as
// the pending selection in the history, and pushes the old pending
// selection into the 'done' array when it was significantly
// different (in number of selected ranges, emptiness, or time).
function addSelectionToHistory(doc, sel, opId, options) {
var hist = doc.history,
origin = options && options.origin;
// A new event is started when the previous origin does not match
// the current, or the origins don't allow matching. Origins
// starting with * are always merged, those starting with + are
// merged when similar and close together in time.
if (opId == hist.lastSelOp ||
(origin && hist.lastSelOrigin == origin &&
(hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
selectionEventCanBeMerged(doc, origin, lst(hist.done), sel)))) {
hist.done[hist.done.length - 1] = sel;
} else {
pushSelectionToHistory(sel, hist.done);
}
hist.lastSelTime = +new Date;
hist.lastSelOrigin = origin;
hist.lastSelOp = opId;
if (options && options.clearRedo !== false) {
clearSelectionEvents(hist.undone);
}
}
function pushSelectionToHistory(sel, dest) {
var top = lst(dest);
if (!(top && top.ranges && top.equals(sel))) {
dest.push(sel);
}
}
// Used to store marked span information in the history.
function attachLocalSpans(doc, change, from, to) {
var existing = change["spans_" + doc.id],
n = 0;
doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) {
if (line.markedSpans) {
(existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans;
}
++n;
});
}
// When un/re-doing restores text containing marked spans, those
// that have been explicitly cleared should not be restored.
function removeClearedSpans(spans) {
if (!spans) {
return null
}
var out;
for (var i = 0; i < spans.length; ++i) {
if (spans[i].marker.explicitlyCleared) {
if (!out) {
out = spans.slice(0, i);
}
} else if (out) {
out.push(spans[i]);
}
}
return !out ? spans : out.length ? out : null
}
// Retrieve and filter the old marked spans stored in a change event.
function getOldSpans(doc, change) {
var found = change["spans_" + doc.id];
if (!found) {
return null
}
var nw = [];
for (var i = 0; i < change.text.length; ++i) {
nw.push(removeClearedSpans(found[i]));
}
return nw
}
// Used for un/re-doing changes from the history. Combines the
// result of computing the existing spans with the set of spans that
// existed in the history (so that deleting around a span and then
// undoing brings back the span).
function mergeOldSpans(doc, change) {
var old = getOldSpans(doc, change);
var stretched = stretchSpansOverChange(doc, change);
if (!old) {
return stretched
}
if (!stretched) {
return old
}
for (var i = 0; i < old.length; ++i) {
var oldCur = old[i],
stretchCur = stretched[i];
if (oldCur && stretchCur) {
spans: for (var j = 0; j < stretchCur.length; ++j) {
var span = stretchCur[j];
for (var k = 0; k < oldCur.length; ++k) {
if (oldCur[k].marker == span.marker) {
continue spans
}
}
oldCur.push(span);
}
}
else if (stretchCur) {
old[i] = stretchCur;
}
}
return old
}
// Used both to provide a JSON-safe object in .getHistory, and, when
// detaching a document, to split the history in two
function copyHistoryArray(events, newGroup, instantiateSel) {
var copy = [];
for (var i = 0; i < events.length; ++i) {
var event = events[i];
if (event.ranges) {
copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);
continue
}
var changes = event.changes,
newChanges = [];
copy.push({
changes: newChanges
});
for (var j = 0; j < changes.length; ++j) {
var change = changes[j],
m = (void 0);
newChanges.push({
from: change.from,
to: change.to,
text: change.text
});
if (newGroup) {
for (var prop in change) {
if (m = prop.match(/^spans_(\d+)$/)) {
if (indexOf(newGroup, Number(m[1])) > -1) {
lst(newChanges)[prop] = change[prop];
delete change[prop];
}
}
}
}
}
}
return copy
}
// The 'scroll' parameter given to many of these indicated whether
// the new cursor position should be scrolled into view after
// modifying the selection.
// If shift is held or the extend flag is set, extends a range to
// include a given position (and optionally a second position).
// Otherwise, simply returns the range between the given positions.
// Used for cursor motion and such.
function extendRange(range, head, other, extend) {
if (extend) {
var anchor = range.anchor;
if (other) {
var posBefore = cmp(head, anchor) < 0;
if (posBefore != (cmp(other, anchor) < 0)) {
anchor = head;
head = other;
} else if (posBefore != (cmp(head, other) < 0)) {
head = other;
}
}
return new Range(anchor, head)
} else {
return new Range(other || head, head)
}
}
// Extend the primary selection range, discard the rest.
function extendSelection(doc, head, other, options, extend) {
if (extend == null) {
extend = doc.cm && (doc.cm.display.shift || doc.extend);
}
setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options);
}
// Extend all selections (pos is an array of selections with length
// equal the number of selections)
function extendSelections(doc, heads, options) {
var out = [];
var extend = doc.cm && (doc.cm.display.shift || doc.extend);
for (var i = 0; i < doc.sel.ranges.length; i++) {
out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend);
}
var newSel = normalizeSelection(doc.cm, out, doc.sel.primIndex);
setSelection(doc, newSel, options);
}
// Updates a single range in the selection.
function replaceOneSelection(doc, i, range, options) {
var ranges = doc.sel.ranges.slice(0);
ranges[i] = range;
setSelection(doc, normalizeSelection(doc.cm, ranges, doc.sel.primIndex), options);
}
// Reset the selection to a single range.
function setSimpleSelection(doc, anchor, head, options) {
setSelection(doc, simpleSelection(anchor, head), options);
}
// Give beforeSelectionChange handlers a change to influence a
// selection update.
function filterSelectionChange(doc, sel, options) {
var obj = {
ranges: sel.ranges,
update: function (ranges) {
var this$1 = this;
this.ranges = [];
for (var i = 0; i < ranges.length; i++) {
this$1.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
clipPos(doc, ranges[i].head));
}
},
origin: options && options.origin
};
signal(doc, "beforeSelectionChange", doc, obj);
if (doc.cm) {
signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
}
if (obj.ranges != sel.ranges) {
return normalizeSelection(doc.cm, obj.ranges, obj.ranges.length - 1)
} else {
return sel
}
}
function setSelectionReplaceHistory(doc, sel, options) {
var done = doc.history.done,
last = lst(done);
if (last && last.ranges) {
done[done.length - 1] = sel;
setSelectionNoUndo(doc, sel, options);
} else {
setSelection(doc, sel, options);
}
}
// Set a new selection.
function setSelection(doc, sel, options) {
setSelectionNoUndo(doc, sel, options);
addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
}
function setSelectionNoUndo(doc, sel, options) {
if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) {
sel = filterSelectionChange(doc, sel, options);
}
var bias = options && options.bias ||
(cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1);
setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));
if (!(options && options.scroll === false) && doc.cm) {
ensureCursorVisible(doc.cm);
}
}
function setSelectionInner(doc, sel) {
if (sel.equals(doc.sel)) {
return
}
doc.sel = sel;
if (doc.cm) {
doc.cm.curOp.updateInput = 1;
doc.cm.curOp.selectionChanged = true;
signalCursorActivity(doc.cm);
}
signalLater(doc, "cursorActivity", doc);
}
// Verify that the selection does not partially select any atomic
// marked ranges.
function reCheckSelection(doc) {
setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false));
}
// Return a selection that does not partially select any atomic
// ranges.
function skipAtomicInSelection(doc, sel, bias, mayClear) {
var out;
for (var i = 0; i < sel.ranges.length; i++) {
var range = sel.ranges[i];
var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i];
var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear);
var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear);
if (out || newAnchor != range.anchor || newHead != range.head) {
if (!out) {
out = sel.ranges.slice(0, i);
}
out[i] = new Range(newAnchor, newHead);
}
}
return out ? normalizeSelection(doc.cm, out, sel.primIndex) : sel
}
function skipAtomicInner(doc, pos, oldPos, dir, mayClear) {
var line = getLine(doc, pos.line);
if (line.markedSpans) {
for (var i = 0; i < line.markedSpans.length; ++i) {
var sp = line.markedSpans[i],
m = sp.marker;
if ((sp.from == null || (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&
(sp.to == null || (m.inclusiveRight ? sp.to >= pos.ch : sp.to > pos.ch))) {
if (mayClear) {
signal(m, "beforeCursorEnter");
if (m.explicitlyCleared) {
if (!line.markedSpans) {
break
} else {
--i;
continue
}
}
}
if (!m.atomic) {
continue
}
if (oldPos) {
var near = m.find(dir < 0 ? 1 : -1),
diff = (void 0);
if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft) {
near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null);
}
if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0)) {
return skipAtomicInner(doc, near, pos, dir, mayClear)
}
}
var far = m.find(dir < 0 ? -1 : 1);
if (dir < 0 ? m.inclusiveLeft : m.inclusiveRight) {
far = movePos(doc, far, dir, far.line == pos.line ? line : null);
}
return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null
}
}
}
return pos
}
// Ensure a given position is not inside an atomic range.
function skipAtomic(doc, pos, oldPos, bias, mayClear) {
var dir = bias || 1;
var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) ||
(!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) ||
skipAtomicInner(doc, pos, oldPos, -dir, mayClear) ||
(!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true));
if (!found) {
doc.cantEdit = true;
return Pos(doc.first, 0)
}
return found
}
function movePos(doc, pos, dir, line) {
if (dir < 0 && pos.ch == 0) {
if (pos.line > doc.first) {
return clipPos(doc, Pos(pos.line - 1))
} else {
return null
}
} else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) {
if (pos.line < doc.first + doc.size - 1) {
return Pos(pos.line + 1, 0)
} else {
return null
}
} else {
return new Pos(pos.line, pos.ch + dir)
}
}
function selectAll(cm) {
cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);
}
// UPDATING
// Allow "beforeChange" event handlers to influence a change
function filterChange(doc, change, update) {
var obj = {
canceled: false,
from: change.from,
to: change.to,
text: change.text,
origin: change.origin,
cancel: function () {
return obj.canceled = true;
}
};
if (update) {
obj.update = function (from, to, text, origin) {
if (from) {
obj.from = clipPos(doc, from);
}
if (to) {
obj.to = clipPos(doc, to);
}
if (text) {
obj.text = text;
}
if (origin !== undefined) {
obj.origin = origin;
}
};
}
signal(doc, "beforeChange", doc, obj);
if (doc.cm) {
signal(doc.cm, "beforeChange", doc.cm, obj);
}
if (obj.canceled) {
if (doc.cm) {
doc.cm.curOp.updateInput = 2;
}
return null
}
return {
from: obj.from,
to: obj.to,
text: obj.text,
origin: obj.origin
}
}
// Apply a change to a document, and add it to the document's
// history, and propagating it to all linked documents.
function makeChange(doc, change, ignoreReadOnly) {
if (doc.cm) {
if (!doc.cm.curOp) {
return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly)
}
if (doc.cm.state.suppressEdits) {
return
}
}
if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
change = filterChange(doc, change, true);
if (!change) {
return
}
}
// Possibly split or suppress the update based on the presence
// of read-only spans in its range.
var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
if (split) {
for (var i = split.length - 1; i >= 0; --i) {
makeChangeInner(doc, {
from: split[i].from,
to: split[i].to,
text: i ? [""] : change.text,
origin: change.origin
});
}
} else {
makeChangeInner(doc, change);
}
}
function makeChangeInner(doc, change) {
if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) {
return
}
var selAfter = computeSelAfterChange(doc, change);
addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);
makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
var rebased = [];
linkedDocs(doc, function (doc, sharedHist) {
if (!sharedHist && indexOf(rebased, doc.history) == -1) {
rebaseHist(doc.history, change);
rebased.push(doc.history);
}
makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
});
}
// Revert a change stored in a document's history.
function makeChangeFromHistory(doc, type, allowSelectionOnly) {
var suppress = doc.cm && doc.cm.state.suppressEdits;
if (suppress && !allowSelectionOnly) {
return
}
var hist = doc.history,
event, selAfter = doc.sel;
var source = type == "undo" ? hist.done : hist.undone,
dest = type == "undo" ? hist.undone : hist.done;
// Verify that there is a useable event (so that ctrl-z won't
// needlessly clear selection events)
var i = 0;
for (; i < source.length; i++) {
event = source[i];
if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges) {
break
}
}
if (i == source.length) {
return
}
hist.lastOrigin = hist.lastSelOrigin = null;
for (;;) {
event = source.pop();
if (event.ranges) {
pushSelectionToHistory(event, dest);
if (allowSelectionOnly && !event.equals(doc.sel)) {
setSelection(doc, event, {
clearRedo: false
});
return
}
selAfter = event;
} else if (suppress) {
source.push(event);
return
} else {
break
}
}
// Build up a reverse change object to add to the opposite history
// stack (redo when undoing, and vice versa).
var antiChanges = [];
pushSelectionToHistory(selAfter, dest);
dest.push({
changes: antiChanges,
generation: hist.generation
});
hist.generation = event.generation || ++hist.maxGeneration;
var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");
var loop = function (i) {
var change = event.changes[i];
change.origin = type;
if (filter && !filterChange(doc, change, false)) {
source.length = 0;
return {}
}
antiChanges.push(historyChangeFromChange(doc, change));
var after = i ? computeSelAfterChange(doc, change) : lst(source);
makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
if (!i && doc.cm) {
doc.cm.scrollIntoView({
from: change.from,
to: changeEnd(change)
});
}
var rebased = [];
// Propagate to the linked documents
linkedDocs(doc, function (doc, sharedHist) {
if (!sharedHist && indexOf(rebased, doc.history) == -1) {
rebaseHist(doc.history, change);
rebased.push(doc.history);
}
makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
});
};
for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) {
var returned = loop(i$1);
if (returned) return returned.v;
}
}
// Sub-views need their line numbers shifted when text is added
// above or below them in the parent document.
function shiftDoc(doc, distance) {
if (distance == 0) {
return
}
doc.first += distance;
doc.sel = new Selection(map(doc.sel.ranges, function (range) {
return new Range(
Pos(range.anchor.line + distance, range.anchor.ch),
Pos(range.head.line + distance, range.head.ch)
);
}), doc.sel.primIndex);
if (doc.cm) {
regChange(doc.cm, doc.first, doc.first - distance, distance);
for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++) {
regLineChange(doc.cm, l, "gutter");
}
}
}
// More lower-level change function, handling only a single document
// (not linked ones).
function makeChangeSingleDoc(doc, change, selAfter, spans) {
if (doc.cm && !doc.cm.curOp) {
return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans)
}
if (change.to.line < doc.first) {
shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
return
}
if (change.from.line > doc.lastLine()) {
return
}
// Clip the change to the size of this doc
if (change.from.line < doc.first) {
var shift = change.text.length - 1 - (doc.first - change.from.line);
shiftDoc(doc, shift);
change = {
from: Pos(doc.first, 0),
to: Pos(change.to.line + shift, change.to.ch),
text: [lst(change.text)],
origin: change.origin
};
}
var last = doc.lastLine();
if (change.to.line > last) {
change = {
from: change.from,
to: Pos(last, getLine(doc, last).text.length),
text: [change.text[0]],
origin: change.origin
};
}
change.removed = getBetween(doc, change.from, change.to);
if (!selAfter) {
selAfter = computeSelAfterChange(doc, change);
}
if (doc.cm) {
makeChangeSingleDocInEditor(doc.cm, change, spans);
} else {
updateDoc(doc, change, spans);
}
setSelectionNoUndo(doc, selAfter, sel_dontScroll);
}
// Handle the interaction of a change to a document with the editor
// that this document is part of.
function makeChangeSingleDocInEditor(cm, change, spans) {
var doc = cm.doc,
display = cm.display,
from = change.from,
to = change.to;
var recomputeMaxLength = false,
checkWidthStart = from.line;
if (!cm.options.lineWrapping) {
checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));
doc.iter(checkWidthStart, to.line + 1, function (line) {
if (line == display.maxLine) {
recomputeMaxLength = true;
return true
}
});
}
if (doc.sel.contains(change.from, change.to) > -1) {
signalCursorActivity(cm);
}
updateDoc(doc, change, spans, estimateHeight(cm));
if (!cm.options.lineWrapping) {
doc.iter(checkWidthStart, from.line + change.text.length, function (line) {
var len = lineLength(line);
if (len > display.maxLineLength) {
display.maxLine = line;
display.maxLineLength = len;
display.maxLineChanged = true;
recomputeMaxLength = false;
}
});
if (recomputeMaxLength) {
cm.curOp.updateMaxLine = true;
}
}
retreatFrontier(doc, from.line);
startWorker(cm, 400);
var lendiff = change.text.length - (to.line - from.line) - 1;
// Remember that these lines changed, for updating the display
if (change.full) {
regChange(cm);
} else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change)) {
regLineChange(cm, from.line, "text");
} else {
regChange(cm, from.line, to.line + 1, lendiff);
}
var changesHandler = hasHandler(cm, "changes"),
changeHandler = hasHandler(cm, "change");
if (changeHandler || changesHandler) {
var obj = {
from: from,
to: to,
text: change.text,
removed: change.removed,
origin: change.origin
};
if (changeHandler) {
signalLater(cm, "change", cm, obj);
}
if (changesHandler) {
(cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj);
}
}
cm.display.selForContextMenu = null;
}
function replaceRange(doc, code, from, to, origin) {
var assign;
if (!to) {
to = from;
}
if (cmp(to, from) < 0) {
(assign = [to, from], from = assign[0], to = assign[1]);
}
if (typeof code == "string") {
code = doc.splitLines(code);
}
makeChange(doc, {
from: from,
to: to,
text: code,
origin: origin
});
}
// Rebasing/resetting history to deal with externally-sourced changes
function rebaseHistSelSingle(pos, from, to, diff) {
if (to < pos.line) {
pos.line += diff;
} else if (from < pos.line) {
pos.line = from;
pos.ch = 0;
}
}
// Tries to rebase an array of history events given a change in the
// document. If the change touches the same lines as the event, the
// event, and everything 'behind' it, is discarded. If the change is
// before the event, the event's positions are updated. Uses a
// copy-on-write scheme for the positions, to avoid having to
// reallocate them all on every rebase, but also avoid problems with
// shared position objects being unsafely updated.
function rebaseHistArray(array, from, to, diff) {
for (var i = 0; i < array.length; ++i) {
var sub = array[i],
ok = true;
if (sub.ranges) {
if (!sub.copied) {
sub = array[i] = sub.deepCopy();
sub.copied = true;
}
for (var j = 0; j < sub.ranges.length; j++) {
rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);
rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);
}
continue
}
for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) {
var cur = sub.changes[j$1];
if (to < cur.from.line) {
cur.from = Pos(cur.from.line + diff, cur.from.ch);
cur.to = Pos(cur.to.line + diff, cur.to.ch);
} else if (from <= cur.to.line) {
ok = false;
break
}
}
if (!ok) {
array.splice(0, i + 1);
i = 0;
}
}
}
function rebaseHist(hist, change) {
var from = change.from.line,
to = change.to.line,
diff = change.text.length - (to - from) - 1;
rebaseHistArray(hist.done, from, to, diff);
rebaseHistArray(hist.undone, from, to, diff);
}
// Utility for applying a change to a line by handle or number,
// returning the number and optionally registering the line as
// changed.
function changeLine(doc, handle, changeType, op) {
var no = handle,
line = handle;
if (typeof handle == "number") {
line = getLine(doc, clipLine(doc, handle));
} else {
no = lineNo(handle);
}
if (no == null) {
return null
}
if (op(line, no) && doc.cm) {
regLineChange(doc.cm, no, changeType);
}
return line
}
// The document is represented as a BTree consisting of leaves, with
// chunk of lines in them, and branches, with up to ten leaves or
// other branch nodes below them. The top node is always a branch
// node, and is the document object itself (meaning it has
// additional methods and properties).
//
// All nodes have parent links. The tree is used both to go from
// line numbers to line objects, and to go from objects to numbers.
// It also indexes by height, and is used to convert between height
// and line object, and to find the total height of the document.
//
// See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html
function LeafChunk(lines) {
var this$1 = this;
this.lines = lines;
this.parent = null;
var height = 0;
for (var i = 0; i < lines.length; ++i) {
lines[i].parent = this$1;
height += lines[i].height;
}
this.height = height;
}
LeafChunk.prototype = {
chunkSize: function () {
return this.lines.length
},
// Remove the n lines at offset 'at'.
removeInner: function (at, n) {
var this$1 = this;
for (var i = at, e = at + n; i < e; ++i) {
var line = this$1.lines[i];
this$1.height -= line.height;
cleanUpLine(line);
signalLater(line, "delete");
}
this.lines.splice(at, n);
},
// Helper used to collapse a small branch into a single leaf.
collapse: function (lines) {
lines.push.apply(lines, this.lines);
},
// Insert the given array of lines at offset 'at', count them as
// having the given height.
insertInner: function (at, lines, height) {
var this$1 = this;
this.height += height;
this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
for (var i = 0; i < lines.length; ++i) {
lines[i].parent = this$1;
}
},
// Used to iterate over a part of the tree.
iterN: function (at, n, op) {
var this$1 = this;
for (var e = at + n; at < e; ++at) {
if (op(this$1.lines[at])) {
return true
}
}
}
};
function BranchChunk(children) {
var this$1 = this;
this.children = children;
var size = 0,
height = 0;
for (var i = 0; i < children.length; ++i) {
var ch = children[i];
size += ch.chunkSize();
height += ch.height;
ch.parent = this$1;
}
this.size = size;
this.height = height;
this.parent = null;
}
BranchChunk.prototype = {
chunkSize: function () {
return this.size
},
removeInner: function (at, n) {
var this$1 = this;
this.size -= n;
for (var i = 0; i < this.children.length; ++i) {
var child = this$1.children[i],
sz = child.chunkSize();
if (at < sz) {
var rm = Math.min(n, sz - at),
oldHeight = child.height;
child.removeInner(at, rm);
this$1.height -= oldHeight - child.height;
if (sz == rm) {
this$1.children.splice(i--, 1);
child.parent = null;
}
if ((n -= rm) == 0) {
break
}
at = 0;
} else {
at -= sz;
}
}
// If the result is smaller than 25 lines, ensure that it is a
// single leaf node.
if (this.size - n < 25 &&
(this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
var lines = [];
this.collapse(lines);
this.children = [new LeafChunk(lines)];
this.children[0].parent = this;
}
},
collapse: function (lines) {
var this$1 = this;
for (var i = 0; i < this.children.length; ++i) {
this$1.children[i].collapse(lines);
}
},
insertInner: function (at, lines, height) {
var this$1 = this;
this.size += lines.length;
this.height += height;
for (var i = 0; i < this.children.length; ++i) {
var child = this$1.children[i],
sz = child.chunkSize();
if (at <= sz) {
child.insertInner(at, lines, height);
if (child.lines && child.lines.length > 50) {
// To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced.
// Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest.
var remaining = child.lines.length % 25 + 25;
for (var pos = remaining; pos < child.lines.length;) {
var leaf = new LeafChunk(child.lines.slice(pos, pos += 25));
child.height -= leaf.height;
this$1.children.splice(++i, 0, leaf);
leaf.parent = this$1;
}
child.lines = child.lines.slice(0, remaining);
this$1.maybeSpill();
}
break
}
at -= sz;
}
},
// When a node has grown, check whether it should be split.
maybeSpill: function () {
if (this.children.length <= 10) {
return
}
var me = this;
do {
var spilled = me.children.splice(me.children.length - 5, 5);
var sibling = new BranchChunk(spilled);
if (!me.parent) { // Become the parent node
var copy = new BranchChunk(me.children);
copy.parent = me;
me.children = [copy, sibling];
me = copy;
} else {
me.size -= sibling.size;
me.height -= sibling.height;
var myIndex = indexOf(me.parent.children, me);
me.parent.children.splice(myIndex + 1, 0, sibling);
}
sibling.parent = me.parent;
} while (me.children.length > 10)
me.parent.maybeSpill();
},
iterN: function (at, n, op) {
var this$1 = this;
for (var i = 0; i < this.children.length; ++i) {
var child = this$1.children[i],
sz = child.chunkSize();
if (at < sz) {
var used = Math.min(n, sz - at);
if (child.iterN(at, used, op)) {
return true
}
if ((n -= used) == 0) {
break
}
at = 0;
} else {
at -= sz;
}
}
}
};
// Line widgets are block elements displayed above or below a line.
var LineWidget = function (doc, node, options) {
var this$1 = this;
if (options) {
for (var opt in options) {
if (options.hasOwnProperty(opt)) {
this$1[opt] = options[opt];
}
}
}
this.doc = doc;
this.node = node;
};
LineWidget.prototype.clear = function () {
var this$1 = this;
var cm = this.doc.cm,
ws = this.line.widgets,
line = this.line,
no = lineNo(line);
if (no == null || !ws) {
return
}
for (var i = 0; i < ws.length; ++i) {
if (ws[i] == this$1) {
ws.splice(i--, 1);
}
}
if (!ws.length) {
line.widgets = null;
}
var height = widgetHeight(this);
updateLineHeight(line, Math.max(0, line.height - height));
if (cm) {
runInOp(cm, function () {
adjustScrollWhenAboveVisible(cm, line, -height);
regLineChange(cm, no, "widget");
});
signalLater(cm, "lineWidgetCleared", cm, this, no);
}
};
LineWidget.prototype.changed = function () {
var this$1 = this;
var oldH = this.height,
cm = this.doc.cm,
line = this.line;
this.height = null;
var diff = widgetHeight(this) - oldH;
if (!diff) {
return
}
if (!lineIsHidden(this.doc, line)) {
updateLineHeight(line, line.height + diff);
}
if (cm) {
runInOp(cm, function () {
cm.curOp.forceUpdate = true;
adjustScrollWhenAboveVisible(cm, line, diff);
signalLater(cm, "lineWidgetChanged", cm, this$1, lineNo(line));
});
}
};
eventMixin(LineWidget);
function adjustScrollWhenAboveVisible(cm, line, diff) {
if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop)) {
addToScrollTop(cm, diff);
}
}
function addLineWidget(doc, handle, node, options) {
var widget = new LineWidget(doc, node, options);
var cm = doc.cm;
if (cm && widget.noHScroll) {
cm.display.alignWidgets = true;
}
changeLine(doc, handle, "widget", function (line) {
var widgets = line.widgets || (line.widgets = []);
if (widget.insertAt == null) {
widgets.push(widget);
} else {
widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget);
}
widget.line = line;
if (cm && !lineIsHidden(doc, line)) {
var aboveVisible = heightAtLine(line) < doc.scrollTop;
updateLineHeight(line, line.height + widgetHeight(widget));
if (aboveVisible) {
addToScrollTop(cm, widget.height);
}
cm.curOp.forceUpdate = true;
}
return true
});
if (cm) {
signalLater(cm, "lineWidgetAdded", cm, widget, typeof handle == "number" ? handle : lineNo(handle));
}
return widget
}
// TEXTMARKERS
// Created with markText and setBookmark methods. A TextMarker is a
// handle that can be used to clear or find a marked position in the
// document. Line objects hold arrays (markedSpans) containing
// {from, to, marker} object pointing to such marker objects, and
// indicating that such a marker is present on that line. Multiple
// lines may point to the same marker when it spans across lines.
// The spans will have null for their from/to properties when the
// marker continues beyond the start/end of the line. Markers have
// links back to the lines they currently touch.
// Collapsed markers have unique ids, in order to be able to order
// them, which is needed for uniquely determining an outer marker
// when they overlap (they may nest, but not partially overlap).
var nextMarkerId = 0;
var TextMarker = function (doc, type) {
this.lines = [];
this.type = type;
this.doc = doc;
this.id = ++nextMarkerId;
};
// Clear the marker.
TextMarker.prototype.clear = function () {
var this$1 = this;
if (this.explicitlyCleared) {
return
}
var cm = this.doc.cm,
withOp = cm && !cm.curOp;
if (withOp) {
startOperation(cm);
}
if (hasHandler(this, "clear")) {
var found = this.find();
if (found) {
signalLater(this, "clear", found.from, found.to);
}
}
var min = null,
max = null;
for (var i = 0; i < this.lines.length; ++i) {
var line = this$1.lines[i];
var span = getMarkedSpanFor(line.markedSpans, this$1);
if (cm && !this$1.collapsed) {
regLineChange(cm, lineNo(line), "text");
} else if (cm) {
if (span.to != null) {
max = lineNo(line);
}
if (span.from != null) {
min = lineNo(line);
}
}
line.markedSpans = removeMarkedSpan(line.markedSpans, span);
if (span.from == null && this$1.collapsed && !lineIsHidden(this$1.doc, line) && cm) {
updateLineHeight(line, textHeight(cm.display));
}
}
if (cm && this.collapsed && !cm.options.lineWrapping) {
for (var i$1 = 0; i$1 < this.lines.length; ++i$1) {
var visual = visualLine(this$1.lines[i$1]),
len = lineLength(visual);
if (len > cm.display.maxLineLength) {
cm.display.maxLine = visual;
cm.display.maxLineLength = len;
cm.display.maxLineChanged = true;
}
}
}
if (min != null && cm && this.collapsed) {
regChange(cm, min, max + 1);
}
this.lines.length = 0;
this.explicitlyCleared = true;
if (this.atomic && this.doc.cantEdit) {
this.doc.cantEdit = false;
if (cm) {
reCheckSelection(cm.doc);
}
}
if (cm) {
signalLater(cm, "markerCleared", cm, this, min, max);
}
if (withOp) {
endOperation(cm);
}
if (this.parent) {
this.parent.clear();
}
};
// Find the position of the marker in the document. Returns a {from,
// to} object by default. Side can be passed to get a specific side
// -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
// Pos objects returned contain a line object, rather than a line
// number (used to prevent looking up the same line twice).
TextMarker.prototype.find = function (side, lineObj) {
var this$1 = this;
if (side == null && this.type == "bookmark") {
side = 1;
}
var from, to;
for (var i = 0; i < this.lines.length; ++i) {
var line = this$1.lines[i];
var span = getMarkedSpanFor(line.markedSpans, this$1);
if (span.from != null) {
from = Pos(lineObj ? line : lineNo(line), span.from);
if (side == -1) {
return from
}
}
if (span.to != null) {
to = Pos(lineObj ? line : lineNo(line), span.to);
if (side == 1) {
return to
}
}
}
return from && {
from: from,
to: to
}
};
// Signals that the marker's widget changed, and surrounding layout
// should be recomputed.
TextMarker.prototype.changed = function () {
var this$1 = this;
var pos = this.find(-1, true),
widget = this,
cm = this.doc.cm;
if (!pos || !cm) {
return
}
runInOp(cm, function () {
var line = pos.line,
lineN = lineNo(pos.line);
var view = findViewForLine(cm, lineN);
if (view) {
clearLineMeasurementCacheFor(view);
cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
}
cm.curOp.updateMaxLine = true;
if (!lineIsHidden(widget.doc, line) && widget.height != null) {
var oldHeight = widget.height;
widget.height = null;
var dHeight = widgetHeight(widget) - oldHeight;
if (dHeight) {
updateLineHeight(line, line.height + dHeight);
}
}
signalLater(cm, "markerChanged", cm, this$1);
});
};
TextMarker.prototype.attachLine = function (line) {
if (!this.lines.length && this.doc.cm) {
var op = this.doc.cm.curOp;
if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) {
(op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this);
}
}
this.lines.push(line);
};
TextMarker.prototype.detachLine = function (line) {
this.lines.splice(indexOf(this.lines, line), 1);
if (!this.lines.length && this.doc.cm) {
var op = this.doc.cm.curOp;
(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
}
};
eventMixin(TextMarker);
// Create a marker, wire it up to the right lines, and
function markText(doc, from, to, options, type) {
// Shared markers (across linked documents) are handled separately
// (markTextShared will call out to this again, once per
// document).
if (options && options.shared) {
return markTextShared(doc, from, to, options, type)
}
// Ensure we are in an operation.
if (doc.cm && !doc.cm.curOp) {
return operation(doc.cm, markText)(doc, from, to, options, type)
}
var marker = new TextMarker(doc, type),
diff = cmp(from, to);
if (options) {
copyObj(options, marker, false);
}
// Don't connect empty markers unless clearWhenEmpty is false
if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false) {
return marker
}
if (marker.replacedWith) {
// Showing up as a widget implies collapsed (widget replaces text)
marker.collapsed = true;
marker.widgetNode = eltP("span", [marker.replacedWith], "CodeMirror-widget");
if (!options.handleMouseEvents) {
marker.widgetNode.setAttribute("cm-ignore-events", "true");
}
if (options.insertLeft) {
marker.widgetNode.insertLeft = true;
}
}
if (marker.collapsed) {
if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) {
throw new Error("Inserting collapsed marker partially overlapping an existing one")
}
seeCollapsedSpans();
}
if (marker.addToHistory) {
addChangeToHistory(doc, {
from: from,
to: to,
origin: "markText"
}, doc.sel, NaN);
}
var curLine = from.line,
cm = doc.cm,
updateMaxLine;
doc.iter(curLine, to.line + 1, function (line) {
if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine) {
updateMaxLine = true;
}
if (marker.collapsed && curLine != from.line) {
updateLineHeight(line, 0);
}
addMarkedSpan(line, new MarkedSpan(marker,
curLine == from.line ? from.ch : null,
curLine == to.line ? to.ch : null));
++curLine;
});
// lineIsHidden depends on the presence of the spans, so needs a second pass
if (marker.collapsed) {
doc.iter(from.line, to.line + 1, function (line) {
if (lineIsHidden(doc, line)) {
updateLineHeight(line, 0);
}
});
}
if (marker.clearOnEnter) {
on(marker, "beforeCursorEnter", function () {
return marker.clear();
});
}
if (marker.readOnly) {
seeReadOnlySpans();
if (doc.history.done.length || doc.history.undone.length) {
doc.clearHistory();
}
}
if (marker.collapsed) {
marker.id = ++nextMarkerId;
marker.atomic = true;
}
if (cm) {
// Sync editor state
if (updateMaxLine) {
cm.curOp.updateMaxLine = true;
}
if (marker.collapsed) {
regChange(cm, from.line, to.line + 1);
} else if (marker.className || marker.startStyle || marker.endStyle || marker.css ||
marker.attributes || marker.title) {
for (var i = from.line; i <= to.line; i++) {
regLineChange(cm, i, "text");
}
}
if (marker.atomic) {
reCheckSelection(cm.doc);
}
signalLater(cm, "markerAdded", cm, marker);
}
return marker
}
// SHARED TEXTMARKERS
// A shared marker spans multiple linked documents. It is
// implemented as a meta-marker-object controlling multiple normal
// markers.
var SharedTextMarker = function (markers, primary) {
var this$1 = this;
this.markers = markers;
this.primary = primary;
for (var i = 0; i < markers.length; ++i) {
markers[i].parent = this$1;
}
};
SharedTextMarker.prototype.clear = function () {
var this$1 = this;
if (this.explicitlyCleared) {
return
}
this.explicitlyCleared = true;
for (var i = 0; i < this.markers.length; ++i) {
this$1.markers[i].clear();
}
signalLater(this, "clear");
};
SharedTextMarker.prototype.find = function (side, lineObj) {
return this.primary.find(side, lineObj)
};
eventMixin(SharedTextMarker);
function markTextShared(doc, from, to, options, type) {
options = copyObj(options);
options.shared = false;
var markers = [markText(doc, from, to, options, type)],
primary = markers[0];
var widget = options.widgetNode;
linkedDocs(doc, function (doc) {
if (widget) {
options.widgetNode = widget.cloneNode(true);
}
markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
for (var i = 0; i < doc.linked.length; ++i) {
if (doc.linked[i].isParent) {
return
}
}
primary = lst(markers);
});
return new SharedTextMarker(markers, primary)
}
function findSharedMarkers(doc) {
return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) {
return m.parent;
})
}
function copySharedMarkers(doc, markers) {
for (var i = 0; i < markers.length; i++) {
var marker = markers[i],
pos = marker.find();
var mFrom = doc.clipPos(pos.from),
mTo = doc.clipPos(pos.to);
if (cmp(mFrom, mTo)) {
var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);
marker.markers.push(subMark);
subMark.parent = marker;
}
}
}
function detachSharedMarkers(markers) {
var loop = function (i) {
var marker = markers[i],
linked = [marker.primary.doc];
linkedDocs(marker.primary.doc, function (d) {
return linked.push(d);
});
for (var j = 0; j < marker.markers.length; j++) {
var subMarker = marker.markers[j];
if (indexOf(linked, subMarker.doc) == -1) {
subMarker.parent = null;
marker.markers.splice(j--, 1);
}
}
};
for (var i = 0; i < markers.length; i++) loop(i);
}
var nextDocId = 0;
var Doc = function (text, mode, firstLine, lineSep, direction) {
if (!(this instanceof Doc)) {
return new Doc(text, mode, firstLine, lineSep, direction)
}
if (firstLine == null) {
firstLine = 0;
}
BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
this.first = firstLine;
this.scrollTop = this.scrollLeft = 0;
this.cantEdit = false;
this.cleanGeneration = 1;
this.modeFrontier = this.highlightFrontier = firstLine;
var start = Pos(firstLine, 0);
this.sel = simpleSelection(start);
this.history = new History(null);
this.id = ++nextDocId;
this.modeOption = mode;
this.lineSep = lineSep;
this.direction = (direction == "rtl") ? "rtl" : "ltr";
this.extend = false;
if (typeof text == "string") {
text = this.splitLines(text);
}
updateDoc(this, {
from: start,
to: start,
text: text
});
setSelection(this, simpleSelection(start), sel_dontScroll);
};
Doc.prototype = createObj(BranchChunk.prototype, {
constructor: Doc,
// Iterate over the document. Supports two forms -- with only one
// argument, it calls that for each line in the document. With
// three, it iterates over the range given by the first two (with
// the second being non-inclusive).
iter: function (from, to, op) {
if (op) {
this.iterN(from - this.first, to - from, op);
} else {
this.iterN(this.first, this.first + this.size, from);
}
},
// Non-public interface for adding and removing lines.
insert: function (at, lines) {
var height = 0;
for (var i = 0; i < lines.length; ++i) {
height += lines[i].height;
}
this.insertInner(at - this.first, lines, height);
},
remove: function (at, n) {
this.removeInner(at - this.first, n);
},
// From here, the methods are part of the public interface. Most
// are also available from CodeMirror (editor) instances.
getValue: function (lineSep) {
var lines = getLines(this, this.first, this.first + this.size);
if (lineSep === false) {
return lines
}
return lines.join(lineSep || this.lineSeparator())
},
setValue: docMethodOp(function (code) {
var top = Pos(this.first, 0),
last = this.first + this.size - 1;
makeChange(this, {
from: top,
to: Pos(last, getLine(this, last).text.length),
text: this.splitLines(code),
origin: "setValue",
full: true
}, true);
if (this.cm) {
scrollToCoords(this.cm, 0, 0);
}
setSelection(this, simpleSelection(top), sel_dontScroll);
}),
replaceRange: function (code, from, to, origin) {
from = clipPos(this, from);
to = to ? clipPos(this, to) : from;
replaceRange(this, code, from, to, origin);
},
getRange: function (from, to, lineSep) {
var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
if (lineSep === false) {
return lines
}
return lines.join(lineSep || this.lineSeparator())
},
getLine: function (line) {
var l = this.getLineHandle(line);
return l && l.text
},
getLineHandle: function (line) {
if (isLine(this, line)) {
return getLine(this, line)
}
},
getLineNumber: function (line) {
return lineNo(line)
},
getLineHandleVisualStart: function (line) {
if (typeof line == "number") {
line = getLine(this, line);
}
return visualLine(line)
},
lineCount: function () {
return this.size
},
firstLine: function () {
return this.first
},
lastLine: function () {
return this.first + this.size - 1
},
clipPos: function (pos) {
return clipPos(this, pos)
},
getCursor: function (start) {
var range$$1 = this.sel.primary(),
pos;
if (start == null || start == "head") {
pos = range$$1.head;
} else if (start == "anchor") {
pos = range$$1.anchor;
} else if (start == "end" || start == "to" || start === false) {
pos = range$$1.to();
} else {
pos = range$$1.from();
}
return pos
},
listSelections: function () {
return this.sel.ranges
},
somethingSelected: function () {
return this.sel.somethingSelected()
},
setCursor: docMethodOp(function (line, ch, options) {
setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options);
}),
setSelection: docMethodOp(function (anchor, head, options) {
setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);
}),
extendSelection: docMethodOp(function (head, other, options) {
extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
}),
extendSelections: docMethodOp(function (heads, options) {
extendSelections(this, clipPosArray(this, heads), options);
}),
extendSelectionsBy: docMethodOp(function (f, options) {
var heads = map(this.sel.ranges, f);
extendSelections(this, clipPosArray(this, heads), options);
}),
setSelections: docMethodOp(function (ranges, primary, options) {
var this$1 = this;
if (!ranges.length) {
return
}
var out = [];
for (var i = 0; i < ranges.length; i++) {
out[i] = new Range(clipPos(this$1, ranges[i].anchor),
clipPos(this$1, ranges[i].head));
}
if (primary == null) {
primary = Math.min(ranges.length - 1, this.sel.primIndex);
}
setSelection(this, normalizeSelection(this.cm, out, primary), options);
}),
addSelection: docMethodOp(function (anchor, head, options) {
var ranges = this.sel.ranges.slice(0);
ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));
setSelection(this, normalizeSelection(this.cm, ranges, ranges.length - 1), options);
}),
getSelection: function (lineSep) {
var this$1 = this;
var ranges = this.sel.ranges,
lines;
for (var i = 0; i < ranges.length; i++) {
var sel = getBetween(this$1, ranges[i].from(), ranges[i].to());
lines = lines ? lines.concat(sel) : sel;
}
if (lineSep === false) {
return lines
} else {
return lines.join(lineSep || this.lineSeparator())
}
},
getSelections: function (lineSep) {
var this$1 = this;
var parts = [],
ranges = this.sel.ranges;
for (var i = 0; i < ranges.length; i++) {
var sel = getBetween(this$1, ranges[i].from(), ranges[i].to());
if (lineSep !== false) {
sel = sel.join(lineSep || this$1.lineSeparator());
}
parts[i] = sel;
}
return parts
},
replaceSelection: function (code, collapse, origin) {
var dup = [];
for (var i = 0; i < this.sel.ranges.length; i++) {
dup[i] = code;
}
this.replaceSelections(dup, collapse, origin || "+input");
},
replaceSelections: docMethodOp(function (code, collapse, origin) {
var this$1 = this;
var changes = [],
sel = this.sel;
for (var i = 0; i < sel.ranges.length; i++) {
var range$$1 = sel.ranges[i];
changes[i] = {
from: range$$1.from(),
to: range$$1.to(),
text: this$1.splitLines(code[i]),
origin: origin
};
}
var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
for (var i$1 = changes.length - 1; i$1 >= 0; i$1--) {
makeChange(this$1, changes[i$1]);
}
if (newSel) {
setSelectionReplaceHistory(this, newSel);
} else if (this.cm) {
ensureCursorVisible(this.cm);
}
}),
undo: docMethodOp(function () {
makeChangeFromHistory(this, "undo");
}),
redo: docMethodOp(function () {
makeChangeFromHistory(this, "redo");
}),
undoSelection: docMethodOp(function () {
makeChangeFromHistory(this, "undo", true);
}),
redoSelection: docMethodOp(function () {
makeChangeFromHistory(this, "redo", true);
}),
setExtending: function (val) {
this.extend = val;
},
getExtending: function () {
return this.extend
},
historySize: function () {
var hist = this.history,
done = 0,
undone = 0;
for (var i = 0; i < hist.done.length; i++) {
if (!hist.done[i].ranges) {
++done;
}
}
for (var i$1 = 0; i$1 < hist.undone.length; i$1++) {
if (!hist.undone[i$1].ranges) {
++undone;
}
}
return {
undo: done,
redo: undone
}
},
clearHistory: function () {
this.history = new History(this.history.maxGeneration);
},
markClean: function () {
this.cleanGeneration = this.changeGeneration(true);
},
changeGeneration: function (forceSplit) {
if (forceSplit) {
this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null;
}
return this.history.generation
},
isClean: function (gen) {
return this.history.generation == (gen || this.cleanGeneration)
},
getHistory: function () {
return {
done: copyHistoryArray(this.history.done),
undone: copyHistoryArray(this.history.undone)
}
},
setHistory: function (histData) {
var hist = this.history = new History(this.history.maxGeneration);
hist.done = copyHistoryArray(histData.done.slice(0), null, true);
hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);
},
setGutterMarker: docMethodOp(function (line, gutterID, value) {
return changeLine(this, line, "gutter", function (line) {
var markers = line.gutterMarkers || (line.gutterMarkers = {});
markers[gutterID] = value;
if (!value && isEmpty(markers)) {
line.gutterMarkers = null;
}
return true
})
}),
clearGutter: docMethodOp(function (gutterID) {
var this$1 = this;
this.iter(function (line) {
if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
changeLine(this$1, line, "gutter", function () {
line.gutterMarkers[gutterID] = null;
if (isEmpty(line.gutterMarkers)) {
line.gutterMarkers = null;
}
return true
});
}
});
}),
lineInfo: function (line) {
var n;
if (typeof line == "number") {
if (!isLine(this, line)) {
return null
}
n = line;
line = getLine(this, line);
if (!line) {
return null
}
} else {
n = lineNo(line);
if (n == null) {
return null
}
}
return {
line: n,
handle: line,
text: line.text,
gutterMarkers: line.gutterMarkers,
textClass: line.textClass,
bgClass: line.bgClass,
wrapClass: line.wrapClass,
widgets: line.widgets
}
},
addLineClass: docMethodOp(function (handle, where, cls) {
return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
var prop = where == "text" ? "textClass" :
where == "background" ? "bgClass" :
where == "gutter" ? "gutterClass" : "wrapClass";
if (!line[prop]) {
line[prop] = cls;
} else if (classTest(cls).test(line[prop])) {
return false
} else {
line[prop] += " " + cls;
}
return true
})
}),
removeLineClass: docMethodOp(function (handle, where, cls) {
return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
var prop = where == "text" ? "textClass" :
where == "background" ? "bgClass" :
where == "gutter" ? "gutterClass" : "wrapClass";
var cur = line[prop];
if (!cur) {
return false
} else if (cls == null) {
line[prop] = null;
} else {
var found = cur.match(classTest(cls));
if (!found) {
return false
}
var end = found.index + found[0].length;
line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
}
return true
})
}),
addLineWidget: docMethodOp(function (handle, node, options) {
return addLineWidget(this, handle, node, options)
}),
removeLineWidget: function (widget) {
widget.clear();
},
markText: function (from, to, options) {
return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || "range")
},
setBookmark: function (pos, options) {
var realOpts = {
replacedWith: options && (options.nodeType == null ? options.widget : options),
insertLeft: options && options.insertLeft,
clearWhenEmpty: false,
shared: options && options.shared,
handleMouseEvents: options && options.handleMouseEvents
};
pos = clipPos(this, pos);
return markText(this, pos, pos, realOpts, "bookmark")
},
findMarksAt: function (pos) {
pos = clipPos(this, pos);
var markers = [],
spans = getLine(this, pos.line).markedSpans;
if (spans) {
for (var i = 0; i < spans.length; ++i) {
var span = spans[i];
if ((span.from == null || span.from <= pos.ch) &&
(span.to == null || span.to >= pos.ch)) {
markers.push(span.marker.parent || span.marker);
}
}
}
return markers
},
findMarks: function (from, to, filter) {
from = clipPos(this, from);
to = clipPos(this, to);
var found = [],
lineNo$$1 = from.line;
this.iter(from.line, to.line + 1, function (line) {
var spans = line.markedSpans;
if (spans) {
for (var i = 0; i < spans.length; i++) {
var span = spans[i];
if (!(span.to != null && lineNo$$1 == from.line && from.ch >= span.to ||
span.from == null && lineNo$$1 != from.line ||
span.from != null && lineNo$$1 == to.line && span.from >= to.ch) &&
(!filter || filter(span.marker))) {
found.push(span.marker.parent || span.marker);
}
}
}
++lineNo$$1;
});
return found
},
getAllMarks: function () {
var markers = [];
this.iter(function (line) {
var sps = line.markedSpans;
if (sps) {
for (var i = 0; i < sps.length; ++i) {
if (sps[i].from != null) {
markers.push(sps[i].marker);
}
}
}
});
return markers
},
posFromIndex: function (off) {
var ch, lineNo$$1 = this.first,
sepSize = this.lineSeparator().length;
this.iter(function (line) {
var sz = line.text.length + sepSize;
if (sz > off) {
ch = off;
return true
}
off -= sz;
++lineNo$$1;
});
return clipPos(this, Pos(lineNo$$1, ch))
},
indexFromPos: function (coords) {
coords = clipPos(this, coords);
var index = coords.ch;
if (coords.line < this.first || coords.ch < 0) {
return 0
}
var sepSize = this.lineSeparator().length;
this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value
index += line.text.length + sepSize;
});
return index
},
copy: function (copyHistory) {
var doc = new Doc(getLines(this, this.first, this.first + this.size),
this.modeOption, this.first, this.lineSep, this.direction);
doc.scrollTop = this.scrollTop;
doc.scrollLeft = this.scrollLeft;
doc.sel = this.sel;
doc.extend = false;
if (copyHistory) {
doc.history.undoDepth = this.history.undoDepth;
doc.setHistory(this.getHistory());
}
return doc
},
linkedDoc: function (options) {
if (!options) {
options = {};
}
var from = this.first,
to = this.first + this.size;
if (options.from != null && options.from > from) {
from = options.from;
}
if (options.to != null && options.to < to) {
to = options.to;
}
var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction);
if (options.sharedHist) {
copy.history = this.history;
}(this.linked || (this.linked = [])).push({
doc: copy,
sharedHist: options.sharedHist
});
copy.linked = [{
doc: this,
isParent: true,
sharedHist: options.sharedHist
}];
copySharedMarkers(copy, findSharedMarkers(this));
return copy
},
unlinkDoc: function (other) {
var this$1 = this;
if (other instanceof CodeMirror) {
other = other.doc;
}
if (this.linked) {
for (var i = 0; i < this.linked.length; ++i) {
var link = this$1.linked[i];
if (link.doc != other) {
continue
}
this$1.linked.splice(i, 1);
other.unlinkDoc(this$1);
detachSharedMarkers(findSharedMarkers(this$1));
break
}
}
// If the histories were shared, split them again
if (other.history == this.history) {
var splitIds = [other.id];
linkedDocs(other, function (doc) {
return splitIds.push(doc.id);
}, true);
other.history = new History(null);
other.history.done = copyHistoryArray(this.history.done, splitIds);
other.history.undone = copyHistoryArray(this.history.undone, splitIds);
}
},
iterLinkedDocs: function (f) {
linkedDocs(this, f);
},
getMode: function () {
return this.mode
},
getEditor: function () {
return this.cm
},
splitLines: function (str) {
if (this.lineSep) {
return str.split(this.lineSep)
}
return splitLinesAuto(str)
},
lineSeparator: function () {
return this.lineSep || "\n"
},
setDirection: docMethodOp(function (dir) {
if (dir != "rtl") {
dir = "ltr";
}
if (dir == this.direction) {
return
}
this.direction = dir;
this.iter(function (line) {
return line.order = null;
});
if (this.cm) {
directionChanged(this.cm);
}
})
});
// Public alias.
Doc.prototype.eachLine = Doc.prototype.iter;
// Kludge to work around strange IE behavior where it'll sometimes
// re-fire a series of drag-related events right after the drop (#1551)
var lastDrop = 0;
function onDrop(e) {
var cm = this;
clearDragCursor(cm);
if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) {
return
}
e_preventDefault(e);
if (ie) {
lastDrop = +new Date;
}
var pos = posFromMouse(cm, e, true),
files = e.dataTransfer.files;
if (!pos || cm.isReadOnly()) {
return
}
// Might be a file drop, in which case we simply extract the text
// and insert it.
if (files && files.length && window.FileReader && window.File) {
var n = files.length,
text = Array(n),
read = 0;
var loadFile = function (file, i) {
if (cm.options.allowDropFileTypes &&
indexOf(cm.options.allowDropFileTypes, file.type) == -1) {
return
}
var reader = new FileReader;
reader.onload = operation(cm, function () {
var content = reader.result;
if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) {
content = "";
}
text[i] = content;
if (++read == n) {
pos = clipPos(cm.doc, pos);
var change = {
from: pos,
to: pos,
text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())),
origin: "paste"
};
makeChange(cm.doc, change);
setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)));
}
});
reader.readAsText(file);
};
for (var i = 0; i < n; ++i) {
loadFile(files[i], i);
}
} else { // Normal drop
// Don't do a replace if the drop happened inside of the selected text.
if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
cm.state.draggingText(e);
// Ensure the editor is re-focused
setTimeout(function () {
return cm.display.input.focus();
}, 20);
return
}
try {
var text$1 = e.dataTransfer.getData("Text");
if (text$1) {
var selected;
if (cm.state.draggingText && !cm.state.draggingText.copy) {
selected = cm.listSelections();
}
setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));
if (selected) {
for (var i$1 = 0; i$1 < selected.length; ++i$1) {
replaceRange(cm.doc, "", selected[i$1].anchor, selected[i$1].head, "drag");
}
}
cm.replaceSelection(text$1, "around", "paste");
cm.display.input.focus();
}
} catch (e) {}
}
}
function onDragStart(cm, e) {
if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) {
e_stop(e);
return
}
if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) {
return
}
e.dataTransfer.setData("Text", cm.getSelection());
e.dataTransfer.effectAllowed = "copyMove";
// Use dummy image instead of default browsers image.
// Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
if (e.dataTransfer.setDragImage && !safari) {
var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
if (presto) {
img.width = img.height = 1;
cm.display.wrapper.appendChild(img);
// Force a relayout, or Opera won't use our image for some obscure reason
img._top = img.offsetTop;
}
e.dataTransfer.setDragImage(img, 0, 0);
if (presto) {
img.parentNode.removeChild(img);
}
}
}
function onDragOver(cm, e) {
var pos = posFromMouse(cm, e);
if (!pos) {
return
}
var frag = document.createDocumentFragment();
drawSelectionCursor(cm, pos, frag);
if (!cm.display.dragCursor) {
cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors");
cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv);
}
removeChildrenAndAdd(cm.display.dragCursor, frag);
}
function clearDragCursor(cm) {
if (cm.display.dragCursor) {
cm.display.lineSpace.removeChild(cm.display.dragCursor);
cm.display.dragCursor = null;
}
}
// These must be handled carefully, because naively registering a
// handler for each editor will cause the editors to never be
// garbage collected.
function forEachCodeMirror(f) {
if (!document.getElementsByClassName) {
return
}
var byClass = document.getElementsByClassName("CodeMirror"),
editors = [];
for (var i = 0; i < byClass.length; i++) {
var cm = byClass[i].CodeMirror;
if (cm) {
editors.push(cm);
}
}
if (editors.length) {
editors[0].operation(function () {
for (var i = 0; i < editors.length; i++) {
f(editors[i]);
}
});
}
}
var globalsRegistered = false;
function ensureGlobalHandlers() {
if (globalsRegistered) {
return
}
registerGlobalHandlers();
globalsRegistered = true;
}
function registerGlobalHandlers() {
// When the window resizes, we need to refresh active editors.
var resizeTimer;
on(window, "resize", function () {
if (resizeTimer == null) {
resizeTimer = setTimeout(function () {
resizeTimer = null;
forEachCodeMirror(onResize);
}, 100);
}
});
// When the window loses focus, we want to show the editor as blurred
on(window, "blur", function () {
return forEachCodeMirror(onBlur);
});
}
// Called when the window resizes
function onResize(cm) {
var d = cm.display;
// Might be a text scaling operation, clear size caches.
d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
d.scrollbarsClipped = false;
cm.setSize();
}
var keyNames = {
3: "Pause",
8: "Backspace",
9: "Tab",
13: "Enter",
16: "Shift",
17: "Ctrl",
18: "Alt",
19: "Pause",
20: "CapsLock",
27: "Esc",
32: "Space",
33: "PageUp",
34: "PageDown",
35: "End",
36: "Home",
37: "Left",
38: "Up",
39: "Right",
40: "Down",
44: "PrintScrn",
45: "Insert",
46: "Delete",
59: ";",
61: "=",
91: "Mod",
92: "Mod",
93: "Mod",
106: "*",
107: "=",
109: "-",
110: ".",
111: "/",
127: "Delete",
145: "ScrollLock",
173: "-",
186: ";",
187: "=",
188: ",",
189: "-",
190: ".",
191: "/",
192: "`",
219: "[",
220: "\\",
221: "]",
222: "'",
63232: "Up",
63233: "Down",
63234: "Left",
63235: "Right",
63272: "Delete",
63273: "Home",
63275: "End",
63276: "PageUp",
63277: "PageDown",
63302: "Insert"
};
// Number keys
for (var i = 0; i < 10; i++) {
keyNames[i + 48] = keyNames[i + 96] = String(i);
}
// Alphabetic keys
for (var i$1 = 65; i$1 <= 90; i$1++) {
keyNames[i$1] = String.fromCharCode(i$1);
}
// Function keys
for (var i$2 = 1; i$2 <= 12; i$2++) {
keyNames[i$2 + 111] = keyNames[i$2 + 63235] = "F" + i$2;
}
var keyMap = {};
keyMap.basic = {
"Left": "goCharLeft",
"Right": "goCharRight",
"Up": "goLineUp",
"Down": "goLineDown",
"End": "goLineEnd",
"Home": "goLineStartSmart",
"PageUp": "goPageUp",
"PageDown": "goPageDown",
"Delete": "delCharAfter",
"Backspace": "delCharBefore",
"Shift-Backspace": "delCharBefore",
"Tab": "defaultTab",
"Shift-Tab": "indentAuto",
"Enter": "newlineAndIndent",
"Insert": "toggleOverwrite",
"Esc": "singleSelection"
};
// Note that the save and find-related commands aren't defined by
// default. User code or addons can define them. Unknown commands
// are simply ignored.
keyMap.pcDefault = {
"Ctrl-A": "selectAll",
"Ctrl-D": "deleteLine",
"Ctrl-Z": "undo",
"Shift-Ctrl-Z": "redo",
"Ctrl-Y": "redo",
"Ctrl-Home": "goDocStart",
"Ctrl-End": "goDocEnd",
"Ctrl-Up": "goLineUp",
"Ctrl-Down": "goLineDown",
"Ctrl-Left": "goGroupLeft",
"Ctrl-Right": "goGroupRight",
"Alt-Left": "goLineStart",
"Alt-Right": "goLineEnd",
"Ctrl-Backspace": "delGroupBefore",
"Ctrl-Delete": "delGroupAfter",
"Ctrl-S": "save",
"Ctrl-F": "find",
"Ctrl-G": "findNext",
"Shift-Ctrl-G": "findPrev",
"Shift-Ctrl-F": "replace",
"Shift-Ctrl-R": "replaceAll",
"Ctrl-[": "indentLess",
"Ctrl-]": "indentMore",
"Ctrl-U": "undoSelection",
"Shift-Ctrl-U": "redoSelection",
"Alt-U": "redoSelection",
"fallthrough": "basic"
};
// Very basic readline/emacs-style bindings, which are standard on Mac.
keyMap.emacsy = {
"Ctrl-F": "goCharRight",
"Ctrl-B": "goCharLeft",
"Ctrl-P": "goLineUp",
"Ctrl-N": "goLineDown",
"Alt-F": "goWordRight",
"Alt-B": "goWordLeft",
"Ctrl-A": "goLineStart",
"Ctrl-E": "goLineEnd",
"Ctrl-V": "goPageDown",
"Shift-Ctrl-V": "goPageUp",
"Ctrl-D": "delCharAfter",
"Ctrl-H": "delCharBefore",
"Alt-D": "delWordAfter",
"Alt-Backspace": "delWordBefore",
"Ctrl-K": "killLine",
"Ctrl-T": "transposeChars",
"Ctrl-O": "openLine"
};
keyMap.macDefault = {
"Cmd-A": "selectAll",
"Cmd-D": "deleteLine",
"Cmd-Z": "undo",
"Shift-Cmd-Z": "redo",
"Cmd-Y": "redo",
"Cmd-Home": "goDocStart",
"Cmd-Up": "goDocStart",
"Cmd-End": "goDocEnd",
"Cmd-Down": "goDocEnd",
"Alt-Left": "goGroupLeft",
"Alt-Right": "goGroupRight",
"Cmd-Left": "goLineLeft",
"Cmd-Right": "goLineRight",
"Alt-Backspace": "delGroupBefore",
"Ctrl-Alt-Backspace": "delGroupAfter",
"Alt-Delete": "delGroupAfter",
"Cmd-S": "save",
"Cmd-F": "find",
"Cmd-G": "findNext",
"Shift-Cmd-G": "findPrev",
"Cmd-Alt-F": "replace",
"Shift-Cmd-Alt-F": "replaceAll",
"Cmd-[": "indentLess",
"Cmd-]": "indentMore",
"Cmd-Backspace": "delWrappedLineLeft",
"Cmd-Delete": "delWrappedLineRight",
"Cmd-U": "undoSelection",
"Shift-Cmd-U": "redoSelection",
"Ctrl-Up": "goDocStart",
"Ctrl-Down": "goDocEnd",
"fallthrough": ["basic", "emacsy"]
};
keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
// KEYMAP DISPATCH
function normalizeKeyName(name) {
var parts = name.split(/-(?!$)/);
name = parts[parts.length - 1];
var alt, ctrl, shift, cmd;
for (var i = 0; i < parts.length - 1; i++) {
var mod = parts[i];
if (/^(cmd|meta|m)$/i.test(mod)) {
cmd = true;
} else if (/^a(lt)?$/i.test(mod)) {
alt = true;
} else if (/^(c|ctrl|control)$/i.test(mod)) {
ctrl = true;
} else if (/^s(hift)?$/i.test(mod)) {
shift = true;
} else {
throw new Error("Unrecognized modifier name: " + mod)
}
}
if (alt) {
name = "Alt-" + name;
}
if (ctrl) {
name = "Ctrl-" + name;
}
if (cmd) {
name = "Cmd-" + name;
}
if (shift) {
name = "Shift-" + name;
}
return name
}
// This is a kludge to keep keymaps mostly working as raw objects
// (backwards compatibility) while at the same time support features
// like normalization and multi-stroke key bindings. It compiles a
// new normalized keymap, and then updates the old object to reflect
// this.
function normalizeKeyMap(keymap) {
var copy = {};
for (var keyname in keymap) {
if (keymap.hasOwnProperty(keyname)) {
var value = keymap[keyname];
if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) {
continue
}
if (value == "...") {
delete keymap[keyname];
continue
}
var keys = map(keyname.split(" "), normalizeKeyName);
for (var i = 0; i < keys.length; i++) {
var val = (void 0),
name = (void 0);
if (i == keys.length - 1) {
name = keys.join(" ");
val = value;
} else {
name = keys.slice(0, i + 1).join(" ");
val = "...";
}
var prev = copy[name];
if (!prev) {
copy[name] = val;
} else if (prev != val) {
throw new Error("Katansistent bindings for " + name)
}
}
delete keymap[keyname];
}
}
for (var prop in copy) {
keymap[prop] = copy[prop];
}
return keymap
}
function lookupKey(key, map$$1, handle, context) {
map$$1 = getKeyMap(map$$1);
var found = map$$1.call ? map$$1.call(key, context) : map$$1[key];
if (found === false) {
return "nothing"
}
if (found === "...") {
return "multi"
}
if (found != null && handle(found)) {
return "handled"
}
if (map$$1.fallthrough) {
if (Object.prototype.toString.call(map$$1.fallthrough) != "[object Array]") {
return lookupKey(key, map$$1.fallthrough, handle, context)
}
for (var i = 0; i < map$$1.fallthrough.length; i++) {
var result = lookupKey(key, map$$1.fallthrough[i], handle, context);
if (result) {
return result
}
}
}
}
// Modifier key presses don't count as 'real' key presses for the
// purpose of keymap fallthrough.
function isModifierKey(value) {
var name = typeof value == "string" ? value : keyNames[value.keyCode];
return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"
}
function addModifierNames(name, event, noShift) {
var base = name;
if (event.altKey && base != "Alt") {
name = "Alt-" + name;
}
if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") {
name = "Ctrl-" + name;
}
if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") {
name = "Cmd-" + name;
}
if (!noShift && event.shiftKey && base != "Shift") {
name = "Shift-" + name;
}
return name
}
// Look up the name of a key as indicated by an event object.
function keyName(event, noShift) {
if (presto && event.keyCode == 34 && event["char"]) {
return false
}
var name = keyNames[event.keyCode];
if (name == null || event.altGraphKey) {
return false
}
// Ctrl-ScrollLock has keyCode 3, same as Ctrl-Pause,
// so we'll use event.code when available (Chrome 48+, FF 38+, Safari 10.1+)
if (event.keyCode == 3 && event.code) {
name = event.code;
}
return addModifierNames(name, event, noShift)
}
function getKeyMap(val) {
return typeof val == "string" ? keyMap[val] : val
}
// Helper for deleting text near the selection(s), used to implement
// backspace, delete, and similar functionality.
function deleteNearSelection(cm, compute) {
var ranges = cm.doc.sel.ranges,
kill = [];
// Build up a set of ranges to kill first, merging overlapping
// ranges.
for (var i = 0; i < ranges.length; i++) {
var toKill = compute(ranges[i]);
while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
var replaced = kill.pop();
if (cmp(replaced.from, toKill.from) < 0) {
toKill.from = replaced.from;
break
}
}
kill.push(toKill);
}
// Next, remove those actual ranges.
runInOp(cm, function () {
for (var i = kill.length - 1; i >= 0; i--) {
replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete");
}
ensureCursorVisible(cm);
});
}
function moveCharLogically(line, ch, dir) {
var target = skipExtendingChars(line.text, ch + dir, dir);
return target < 0 || target > line.text.length ? null : target
}
function moveLogically(line, start, dir) {
var ch = moveCharLogically(line, start.ch, dir);
return ch == null ? null : new Pos(start.line, ch, dir < 0 ? "after" : "before")
}
function endOfLine(visually, cm, lineObj, lineNo, dir) {
if (visually) {
var order = getOrder(lineObj, cm.doc.direction);
if (order) {
var part = dir < 0 ? lst(order) : order[0];
var moveInStorageOrder = (dir < 0) == (part.level == 1);
var sticky = moveInStorageOrder ? "after" : "before";
var ch;
// With a wrapped rtl chunk (possibly spanning multiple bidi parts),
// it could be that the last bidi part is not on the last visual line,
// since visual lines contain content order-consecutive chunks.
// Thus, in rtl, we are looking for the first (content-order) character
// in the rtl chunk that is on the last line (that is, the same line
// as the last (content-order) character).
if (part.level > 0 || cm.doc.direction == "rtl") {
var prep = prepareMeasureForLine(cm, lineObj);
ch = dir < 0 ? lineObj.text.length - 1 : 0;
var targetTop = measureCharPrepared(cm, prep, ch).top;
ch = findFirst(function (ch) {
return measureCharPrepared(cm, prep, ch).top == targetTop;
}, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch);
if (sticky == "before") {
ch = moveCharLogically(lineObj, ch, 1);
}
} else {
ch = dir < 0 ? part.to : part.from;
}
return new Pos(lineNo, ch, sticky)
}
}
return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? "before" : "after")
}
function moveVisually(cm, line, start, dir) {
var bidi = getOrder(line, cm.doc.direction);
if (!bidi) {
return moveLogically(line, start, dir)
}
if (start.ch >= line.text.length) {
start.ch = line.text.length;
start.sticky = "before";
} else if (start.ch <= 0) {
start.ch = 0;
start.sticky = "after";
}
var partPos = getBidiPartAt(bidi, start.ch, start.sticky),
part = bidi[partPos];
if (cm.doc.direction == "ltr" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) {
// Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines,
// nothing interesting happens.
return moveLogically(line, start, dir)
}
var mv = function (pos, dir) {
return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir);
};
var prep;
var getWrappedLineExtent = function (ch) {
if (!cm.options.lineWrapping) {
return {
begin: 0,
end: line.text.length
}
}
prep = prep || prepareMeasureForLine(cm, line);
return wrappedLineExtentChar(cm, line, prep, ch)
};
var wrappedLineExtent = getWrappedLineExtent(start.sticky == "before" ? mv(start, -1) : start.ch);
if (cm.doc.direction == "rtl" || part.level == 1) {
var moveInStorageOrder = (part.level == 1) == (dir < 0);
var ch = mv(start, moveInStorageOrder ? 1 : -1);
if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) {
// Case 2: We move within an rtl part or in an rtl editor on the same visual line
var sticky = moveInStorageOrder ? "before" : "after";
return new Pos(start.line, ch, sticky)
}
}
// Case 3: Could not move within this bidi part in this visual line, so leave
// the current bidi part
var searchInVisualLine = function (partPos, dir, wrappedLineExtent) {
var getRes = function (ch, moveInStorageOrder) {
return moveInStorageOrder ?
new Pos(start.line, mv(ch, 1), "before") :
new Pos(start.line, ch, "after");
};
for (; partPos >= 0 && partPos < bidi.length; partPos += dir) {
var part = bidi[partPos];
var moveInStorageOrder = (dir > 0) == (part.level != 1);
var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1);
if (part.from <= ch && ch < part.to) {
return getRes(ch, moveInStorageOrder)
}
ch = moveInStorageOrder ? part.from : mv(part.to, -1);
if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) {
return getRes(ch, moveInStorageOrder)
}
}
};
// Case 3a: Look for other bidi parts on the same visual line
var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent);
if (res) {
return res
}
// Case 3b: Look for other bidi parts on the next visual line
var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1);
if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) {
res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh));
if (res) {
return res
}
}
// Case 4: Nowhere to move
return null
}
// Commands are parameter-less actions that can be performed on an
// editor, mostly used for keybindings.
var commands = {
selectAll: selectAll,
singleSelection: function (cm) {
return cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll);
},
killLine: function (cm) {
return deleteNearSelection(cm, function (range) {
if (range.empty()) {
var len = getLine(cm.doc, range.head.line).text.length;
if (range.head.ch == len && range.head.line < cm.lastLine()) {
return {
from: range.head,
to: Pos(range.head.line + 1, 0)
}
} else {
return {
from: range.head,
to: Pos(range.head.line, len)
}
}
} else {
return {
from: range.from(),
to: range.to()
}
}
});
},
deleteLine: function (cm) {
return deleteNearSelection(cm, function (range) {
return ({
from: Pos(range.from().line, 0),
to: clipPos(cm.doc, Pos(range.to().line + 1, 0))
});
});
},
delLineLeft: function (cm) {
return deleteNearSelection(cm, function (range) {
return ({
from: Pos(range.from().line, 0),
to: range.from()
});
});
},
delWrappedLineLeft: function (cm) {
return deleteNearSelection(cm, function (range) {
var top = cm.charCoords(range.head, "div").top + 5;
var leftPos = cm.coordsChar({
left: 0,
top: top
}, "div");
return {
from: leftPos,
to: range.from()
}
});
},
delWrappedLineRight: function (cm) {
return deleteNearSelection(cm, function (range) {
var top = cm.charCoords(range.head, "div").top + 5;
var rightPos = cm.coordsChar({
left: cm.display.lineDiv.offsetWidth + 100,
top: top
}, "div");
return {
from: range.from(),
to: rightPos
}
});
},
undo: function (cm) {
return cm.undo();
},
redo: function (cm) {
return cm.redo();
},
undoSelection: function (cm) {
return cm.undoSelection();
},
redoSelection: function (cm) {
return cm.redoSelection();
},
goDocStart: function (cm) {
return cm.extendSelection(Pos(cm.firstLine(), 0));
},
goDocEnd: function (cm) {
return cm.extendSelection(Pos(cm.lastLine()));
},
goLineStart: function (cm) {
return cm.extendSelectionsBy(function (range) {
return lineStart(cm, range.head.line);
}, {
origin: "+move",
bias: 1
});
},
goLineStartSmart: function (cm) {
return cm.extendSelectionsBy(function (range) {
return lineStartSmart(cm, range.head);
}, {
origin: "+move",
bias: 1
});
},
goLineEnd: function (cm) {
return cm.extendSelectionsBy(function (range) {
return lineEnd(cm, range.head.line);
}, {
origin: "+move",
bias: -1
});
},
goLineRight: function (cm) {
return cm.extendSelectionsBy(function (range) {
var top = cm.cursorCoords(range.head, "div").top + 5;
return cm.coordsChar({
left: cm.display.lineDiv.offsetWidth + 100,
top: top
}, "div")
}, sel_move);
},
goLineLeft: function (cm) {
return cm.extendSelectionsBy(function (range) {
var top = cm.cursorCoords(range.head, "div").top + 5;
return cm.coordsChar({
left: 0,
top: top
}, "div")
}, sel_move);
},
goLineLeftSmart: function (cm) {
return cm.extendSelectionsBy(function (range) {
var top = cm.cursorCoords(range.head, "div").top + 5;
var pos = cm.coordsChar({
left: 0,
top: top
}, "div");
if (pos.ch < cm.getLine(pos.line).search(/\S/)) {
return lineStartSmart(cm, range.head)
}
return pos
}, sel_move);
},
goLineUp: function (cm) {
return cm.moveV(-1, "line");
},
goLineDown: function (cm) {
return cm.moveV(1, "line");
},
goPageUp: function (cm) {
return cm.moveV(-1, "page");
},
goPageDown: function (cm) {
return cm.moveV(1, "page");
},
goCharLeft: function (cm) {
return cm.moveH(-1, "char");
},
goCharRight: function (cm) {
return cm.moveH(1, "char");
},
goColumnLeft: function (cm) {
return cm.moveH(-1, "column");
},
goColumnRight: function (cm) {
return cm.moveH(1, "column");
},
goWordLeft: function (cm) {
return cm.moveH(-1, "word");
},
goGroupRight: function (cm) {
return cm.moveH(1, "group");
},
goGroupLeft: function (cm) {
return cm.moveH(-1, "group");
},
goWordRight: function (cm) {
return cm.moveH(1, "word");
},
delCharBefore: function (cm) {
return cm.deleteH(-1, "char");
},
delCharAfter: function (cm) {
return cm.deleteH(1, "char");
},
delWordBefore: function (cm) {
return cm.deleteH(-1, "word");
},
delWordAfter: function (cm) {
return cm.deleteH(1, "word");
},
delGroupBefore: function (cm) {
return cm.deleteH(-1, "group");
},
delGroupAfter: function (cm) {
return cm.deleteH(1, "group");
},
indentAuto: function (cm) {
return cm.indentSelection("smart");
},
indentMore: function (cm) {
return cm.indentSelection("add");
},
indentLess: function (cm) {
return cm.indentSelection("subtract");
},
insertTab: function (cm) {
return cm.replaceSelection("\t");
},
insertSoftTab: function (cm) {
var spaces = [],
ranges = cm.listSelections(),
tabSize = cm.options.tabSize;
for (var i = 0; i < ranges.length; i++) {
var pos = ranges[i].from();
var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);
spaces.push(spaceStr(tabSize - col % tabSize));
}
cm.replaceSelections(spaces);
},
defaultTab: function (cm) {
if (cm.somethingSelected()) {
cm.indentSelection("add");
} else {
cm.execCommand("insertTab");
}
},
// Swap the two chars left and right of each selection's head.
// Move cursor behind the two swapped characters afterwards.
//
// Doesn't consider line feeds a character.
// Doesn't scan more than one line above to find a character.
// Doesn't do anything on an empty line.
// Doesn't do anything with non-empty selections.
transposeChars: function (cm) {
return runInOp(cm, function () {
var ranges = cm.listSelections(),
newSel = [];
for (var i = 0; i < ranges.length; i++) {
if (!ranges[i].empty()) {
continue
}
var cur = ranges[i].head,
line = getLine(cm.doc, cur.line).text;
if (line) {
if (cur.ch == line.length) {
cur = new Pos(cur.line, cur.ch - 1);
}
if (cur.ch > 0) {
cur = new Pos(cur.line, cur.ch + 1);
cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),
Pos(cur.line, cur.ch - 2), cur, "+transpose");
} else if (cur.line > cm.doc.first) {
var prev = getLine(cm.doc, cur.line - 1).text;
if (prev) {
cur = new Pos(cur.line, 1);
cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +
prev.charAt(prev.length - 1),
Pos(cur.line - 1, prev.length - 1), cur, "+transpose");
}
}
}
newSel.push(new Range(cur, cur));
}
cm.setSelections(newSel);
});
},
newlineAndIndent: function (cm) {
return runInOp(cm, function () {
var sels = cm.listSelections();
for (var i = sels.length - 1; i >= 0; i--) {
cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, "+input");
}
sels = cm.listSelections();
for (var i$1 = 0; i$1 < sels.length; i$1++) {
cm.indentLine(sels[i$1].from().line, null, true);
}
ensureCursorVisible(cm);
});
},
openLine: function (cm) {
return cm.replaceSelection("\n", "start");
},
toggleOverwrite: function (cm) {
return cm.toggleOverwrite();
}
};
function lineStart(cm, lineN) {
var line = getLine(cm.doc, lineN);
var visual = visualLine(line);
if (visual != line) {
lineN = lineNo(visual);
}
return endOfLine(true, cm, visual, lineN, 1)
}
function lineEnd(cm, lineN) {
var line = getLine(cm.doc, lineN);
var visual = visualLineEnd(line);
if (visual != line) {
lineN = lineNo(visual);
}
return endOfLine(true, cm, line, lineN, -1)
}
function lineStartSmart(cm, pos) {
var start = lineStart(cm, pos.line);
var line = getLine(cm.doc, start.line);
var order = getOrder(line, cm.doc.direction);
if (!order || order[0].level == 0) {
var firstNonWS = Math.max(0, line.text.search(/\S/));
var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch;
return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky)
}
return start
}
// Run a handler that was bound to a key.
function doHandleBinding(cm, bound, dropShift) {
if (typeof bound == "string") {
bound = commands[bound];
if (!bound) {
return false
}
}
// Ensure previous input has been read, so that the handler sees a
// consistent view of the document
cm.display.input.ensurePolled();
var prevShift = cm.display.shift,
done = false;
try {
if (cm.isReadOnly()) {
cm.state.suppressEdits = true;
}
if (dropShift) {
cm.display.shift = false;
}
done = bound(cm) != Pass;
} finally {
cm.display.shift = prevShift;
cm.state.suppressEdits = false;
}
return done
}
function lookupKeyForEditor(cm, name, handle) {
for (var i = 0; i < cm.state.keyMaps.length; i++) {
var result = lookupKey(name, cm.state.keyMaps[i], handle, cm);
if (result) {
return result
}
}
return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm)) ||
lookupKey(name, cm.options.keyMap, handle, cm)
}
// Note that, despite the name, this function is also used to check
// for bound mouse clicks.
var stopSeq = new Delayed;
function dispatchKey(cm, name, e, handle) {
var seq = cm.state.keySeq;
if (seq) {
if (isModifierKey(name)) {
return "handled"
}
if (/\'$/.test(name)) {
cm.state.keySeq = null;
} else {
stopSeq.set(50, function () {
if (cm.state.keySeq == seq) {
cm.state.keySeq = null;
cm.display.input.reset();
}
});
}
if (dispatchKeyInner(cm, seq + " " + name, e, handle)) {
return true
}
}
return dispatchKeyInner(cm, name, e, handle)
}
function dispatchKeyInner(cm, name, e, handle) {
var result = lookupKeyForEditor(cm, name, handle);
if (result == "multi") {
cm.state.keySeq = name;
}
if (result == "handled") {
signalLater(cm, "keyHandled", cm, name, e);
}
if (result == "handled" || result == "multi") {
e_preventDefault(e);
restartBlink(cm);
}
return !!result
}
// Handle a key from the keydown event.
function handleKeyBinding(cm, e) {
var name = keyName(e, true);
if (!name) {
return false
}
if (e.shiftKey && !cm.state.keySeq) {
// First try to resolve full name (including 'Shift-'). Failing
// that, see if there is a cursor-motion command (starting with
// 'go') bound to the keyname without 'Shift-'.
return dispatchKey(cm, "Shift-" + name, e, function (b) {
return doHandleBinding(cm, b, true);
}) ||
dispatchKey(cm, name, e, function (b) {
if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) {
return doHandleBinding(cm, b)
}
})
} else {
return dispatchKey(cm, name, e, function (b) {
return doHandleBinding(cm, b);
})
}
}
// Handle a key from the keypress event
function handleCharBinding(cm, e, ch) {
return dispatchKey(cm, "'" + ch + "'", e, function (b) {
return doHandleBinding(cm, b, true);
})
}
var lastStoppedKey = null;
function onKeyDown(e) {
var cm = this;
cm.curOp.focus = activeElt();
if (signalDOMEvent(cm, e)) {
return
}
// IE does strange things with escape.
if (ie && ie_version < 11 && e.keyCode == 27) {
e.returnValue = false;
}
var code = e.keyCode;
cm.display.shift = code == 16 || e.shiftKey;
var handled = handleKeyBinding(cm, e);
if (presto) {
lastStoppedKey = handled ? code : null;
// Opera has no cut event... we try to at least catch the key combo
if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) {
cm.replaceSelection("", null, "cut");
}
}
// Turn mouse into crosshair when Alt is held on Mac.
if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className)) {
showCrossHair(cm);
}
}
function showCrossHair(cm) {
var lineDiv = cm.display.lineDiv;
addClass(lineDiv, "CodeMirror-crosshair");
function up(e) {
if (e.keyCode == 18 || !e.altKey) {
rmClass(lineDiv, "CodeMirror-crosshair");
off(document, "keyup", up);
off(document, "mouseover", up);
}
}
on(document, "keyup", up);
on(document, "mouseover", up);
}
function onKeyUp(e) {
if (e.keyCode == 16) {
this.doc.sel.shift = false;
}
signalDOMEvent(this, e);
}
function onKeyPress(e) {
var cm = this;
if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) {
return
}
var keyCode = e.keyCode,
charCode = e.charCode;
if (presto && keyCode == lastStoppedKey) {
lastStoppedKey = null;
e_preventDefault(e);
return
}
if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) {
return
}
var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
// Some browsers fire keypress events for backspace
if (ch == "\x08") {
return
}
if (handleCharBinding(cm, e, ch)) {
return
}
cm.display.input.onKeyPress(e);
}
var DOUBLECLICK_DELAY = 400;
var PastClick = function (time, pos, button) {
this.time = time;
this.pos = pos;
this.button = button;
};
PastClick.prototype.compare = function (time, pos, button) {
return this.time + DOUBLECLICK_DELAY > time &&
cmp(pos, this.pos) == 0 && button == this.button
};
var lastClick, lastDoubleClick;
function clickRepeat(pos, button) {
var now = +new Date;
if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) {
lastClick = lastDoubleClick = null;
return "triple"
} else if (lastClick && lastClick.compare(now, pos, button)) {
lastDoubleClick = new PastClick(now, pos, button);
lastClick = null;
return "double"
} else {
lastClick = new PastClick(now, pos, button);
lastDoubleClick = null;
return "single"
}
}
// A mouse down can be a single click, double click, triple click,
// start of selection drag, start of text drag, new cursor
// (ctrl-click), rectangle drag (alt-drag), or xwin
// middle-click-paste. Or it might be a click on something we should
// not interfere with, such as a scrollbar or widget.
function onMouseDown(e) {
var cm = this,
display = cm.display;
if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) {
return
}
display.input.ensurePolled();
display.shift = e.shiftKey;
if (eventInWidget(display, e)) {
if (!webkit) {
// Briefly turn off draggability, to allow widgets to do
// normal dragging things.
display.scroller.draggable = false;
setTimeout(function () {
return display.scroller.draggable = true;
}, 100);
}
return
}
if (clickInGutter(cm, e)) {
return
}
var pos = posFromMouse(cm, e),
button = e_button(e),
repeat = pos ? clickRepeat(pos, button) : "single";
window.focus();
// #3261: make sure, that we're not starting a second selection
if (button == 1 && cm.state.selectingText) {
cm.state.selectingText(e);
}
if (pos && handleMappedButton(cm, button, pos, repeat, e)) {
return
}
if (button == 1) {
if (pos) {
leftButtonDown(cm, pos, repeat, e);
} else if (e_target(e) == display.scroller) {
e_preventDefault(e);
}
} else if (button == 2) {
if (pos) {
extendSelection(cm.doc, pos);
}
setTimeout(function () {
return display.input.focus();
}, 20);
} else if (button == 3) {
if (captureRightClick) {
cm.display.input.onContextMenu(e);
} else {
delayBlurEvent(cm);
}
}
}
function handleMappedButton(cm, button, pos, repeat, event) {
var name = "Click";
if (repeat == "double") {
name = "Double" + name;
} else if (repeat == "triple") {
name = "Triple" + name;
}
name = (button == 1 ? "Left" : button == 2 ? "Middle" : "Right") + name;
return dispatchKey(cm, addModifierNames(name, event), event, function (bound) {
if (typeof bound == "string") {
bound = commands[bound];
}
if (!bound) {
return false
}
var done = false;
try {
if (cm.isReadOnly()) {
cm.state.suppressEdits = true;
}
done = bound(cm, pos) != Pass;
} finally {
cm.state.suppressEdits = false;
}
return done
})
}
function configureMouse(cm, repeat, event) {
var option = cm.getOption("configureMouse");
var value = option ? option(cm, repeat, event) : {};
if (value.unit == null) {
var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey;
value.unit = rect ? "rectangle" : repeat == "single" ? "char" : repeat == "double" ? "word" : "line";
}
if (value.extend == null || cm.doc.extend) {
value.extend = cm.doc.extend || event.shiftKey;
}
if (value.addNew == null) {
value.addNew = mac ? event.metaKey : event.ctrlKey;
}
if (value.moveOnDrag == null) {
value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey);
}
return value
}
function leftButtonDown(cm, pos, repeat, event) {
if (ie) {
setTimeout(bind(ensureFocus, cm), 0);
} else {
cm.curOp.focus = activeElt();
}
var behavior = configureMouse(cm, repeat, event);
var sel = cm.doc.sel,
contained;
if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&
repeat == "single" && (contained = sel.contains(pos)) > -1 &&
(cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) &&
(cmp(contained.to(), pos) > 0 || pos.xRel < 0)) {
leftButtonStartDrag(cm, event, pos, behavior);
} else {
leftButtonSelect(cm, event, pos, behavior);
}
}
// Start a text drag. When it ends, see if any dragging actually
// happen, and treat as a click if it didn't.
function leftButtonStartDrag(cm, event, pos, behavior) {
var display = cm.display,
moved = false;
var dragEnd = operation(cm, function (e) {
if (webkit) {
display.scroller.draggable = false;
}
cm.state.draggingText = false;
off(display.wrapper.ownerDocument, "mouseup", dragEnd);
off(display.wrapper.ownerDocument, "mousemove", mouseMove);
off(display.scroller, "dragstart", dragStart);
off(display.scroller, "drop", dragEnd);
if (!moved) {
e_preventDefault(e);
if (!behavior.addNew) {
extendSelection(cm.doc, pos, null, null, behavior.extend);
}
// Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
if (webkit || ie && ie_version == 9) {
setTimeout(function () {
display.wrapper.ownerDocument.body.focus();
display.input.focus();
}, 20);
} else {
display.input.focus();
}
}
});
var mouseMove = function (e2) {
moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10;
};
var dragStart = function () {
return moved = true;
};
// Let the drag handler handle this.
if (webkit) {
display.scroller.draggable = true;
}
cm.state.draggingText = dragEnd;
dragEnd.copy = !behavior.moveOnDrag;
// IE's approach to draggable
if (display.scroller.dragDrop) {
display.scroller.dragDrop();
}
on(display.wrapper.ownerDocument, "mouseup", dragEnd);
on(display.wrapper.ownerDocument, "mousemove", mouseMove);
on(display.scroller, "dragstart", dragStart);
on(display.scroller, "drop", dragEnd);
delayBlurEvent(cm);
setTimeout(function () {
return display.input.focus();
}, 20);
}
function rangeForUnit(cm, pos, unit) {
if (unit == "char") {
return new Range(pos, pos)
}
if (unit == "word") {
return cm.findWordAt(pos)
}
if (unit == "line") {
return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0)))
}
var result = unit(cm, pos);
return new Range(result.from, result.to)
}
// Normal selection, as opposed to text dragging.
function leftButtonSelect(cm, event, start, behavior) {
var display = cm.display,
doc = cm.doc;
e_preventDefault(event);
var ourRange, ourIndex, startSel = doc.sel,
ranges = startSel.ranges;
if (behavior.addNew && !behavior.extend) {
ourIndex = doc.sel.contains(start);
if (ourIndex > -1) {
ourRange = ranges[ourIndex];
} else {
ourRange = new Range(start, start);
}
} else {
ourRange = doc.sel.primary();
ourIndex = doc.sel.primIndex;
}
if (behavior.unit == "rectangle") {
if (!behavior.addNew) {
ourRange = new Range(start, start);
}
start = posFromMouse(cm, event, true, true);
ourIndex = -1;
} else {
var range$$1 = rangeForUnit(cm, start, behavior.unit);
if (behavior.extend) {
ourRange = extendRange(ourRange, range$$1.anchor, range$$1.head, behavior.extend);
} else {
ourRange = range$$1;
}
}
if (!behavior.addNew) {
ourIndex = 0;
setSelection(doc, new Selection([ourRange], 0), sel_mouse);
startSel = doc.sel;
} else if (ourIndex == -1) {
ourIndex = ranges.length;
setSelection(doc, normalizeSelection(cm, ranges.concat([ourRange]), ourIndex), {
scroll: false,
origin: "*mouse"
});
} else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == "char" && !behavior.extend) {
setSelection(doc, normalizeSelection(cm, ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0), {
scroll: false,
origin: "*mouse"
});
startSel = doc.sel;
} else {
replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
}
var lastPos = start;
function extendTo(pos) {
if (cmp(lastPos, pos) == 0) {
return
}
lastPos = pos;
if (behavior.unit == "rectangle") {
var ranges = [],
tabSize = cm.options.tabSize;
var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);
var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);
var left = Math.min(startCol, posCol),
right = Math.max(startCol, posCol);
for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line)); line <= end; line++) {
var text = getLine(doc, line).text,
leftPos = findColumn(text, left, tabSize);
if (left == right) {
ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos)));
} else if (text.length > leftPos) {
ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize))));
}
}
if (!ranges.length) {
ranges.push(new Range(start, start));
}
setSelection(doc, normalizeSelection(cm, startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex), {
origin: "*mouse",
scroll: false
});
cm.scrollIntoView(pos);
} else {
var oldRange = ourRange;
var range$$1 = rangeForUnit(cm, pos, behavior.unit);
var anchor = oldRange.anchor,
head;
if (cmp(range$$1.anchor, anchor) > 0) {
head = range$$1.head;
anchor = minPos(oldRange.from(), range$$1.anchor);
} else {
head = range$$1.anchor;
anchor = maxPos(oldRange.to(), range$$1.head);
}
var ranges$1 = startSel.ranges.slice(0);
ranges$1[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head));
setSelection(doc, normalizeSelection(cm, ranges$1, ourIndex), sel_mouse);
}
}
var editorSize = display.wrapper.getBoundingClientRect();
// Used to ensure timeout re-tries don't fire when another extend
// happened in the meantime (clearTimeout isn't reliable -- at
// least on Chrome, the timeouts still happen even when cleared,
// if the clear happens after their scheduled firing time).
var counter = 0;
function extend(e) {
var curCount = ++counter;
var cur = posFromMouse(cm, e, true, behavior.unit == "rectangle");
if (!cur) {
return
}
if (cmp(cur, lastPos) != 0) {
cm.curOp.focus = activeElt();
extendTo(cur);
var visible = visibleLines(display, doc);
if (cur.line >= visible.to || cur.line < visible.from) {
setTimeout(operation(cm, function () {
if (counter == curCount) {
extend(e);
}
}), 150);
}
} else {
var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
if (outside) {
setTimeout(operation(cm, function () {
if (counter != curCount) {
return
}
display.scroller.scrollTop += outside;
extend(e);
}), 50);
}
}
}
function done(e) {
cm.state.selectingText = false;
counter = Infinity;
e_preventDefault(e);
display.input.focus();
off(display.wrapper.ownerDocument, "mousemove", move);
off(display.wrapper.ownerDocument, "mouseup", up);
doc.history.lastSelOrigin = null;
}
var move = operation(cm, function (e) {
if (e.buttons === 0 || !e_button(e)) {
done(e);
} else {
extend(e);
}
});
var up = operation(cm, done);
cm.state.selectingText = up;
on(display.wrapper.ownerDocument, "mousemove", move);
on(display.wrapper.ownerDocument, "mouseup", up);
}
// Used when mouse-selecting to adjust the anchor to the proper side
// of a bidi jump depending on the visual position of the head.
function bidiSimplify(cm, range$$1) {
var anchor = range$$1.anchor;
var head = range$$1.head;
var anchorLine = getLine(cm.doc, anchor.line);
if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) {
return range$$1
}
var order = getOrder(anchorLine);
if (!order) {
return range$$1
}
var index = getBidiPartAt(order, anchor.ch, anchor.sticky),
part = order[index];
if (part.from != anchor.ch && part.to != anchor.ch) {
return range$$1
}
var boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1);
if (boundary == 0 || boundary == order.length) {
return range$$1
}
// Compute the relative visual position of the head compared to the
// anchor (<0 is to the left, >0 to the right)
var leftSide;
if (head.line != anchor.line) {
leftSide = (head.line - anchor.line) * (cm.doc.direction == "ltr" ? 1 : -1) > 0;
} else {
var headIndex = getBidiPartAt(order, head.ch, head.sticky);
var dir = headIndex - index || (head.ch - anchor.ch) * (part.level == 1 ? -1 : 1);
if (headIndex == boundary - 1 || headIndex == boundary) {
leftSide = dir < 0;
} else {
leftSide = dir > 0;
}
}
var usePart = order[boundary + (leftSide ? -1 : 0)];
var from = leftSide == (usePart.level == 1);
var ch = from ? usePart.from : usePart.to,
sticky = from ? "after" : "before";
return anchor.ch == ch && anchor.sticky == sticky ? range$$1 : new Range(new Pos(anchor.line, ch, sticky), head)
}
// Determines whether an event happened in the gutter, and fires the
// handlers for the corresponding event.
function gutterEvent(cm, e, type, prevent) {
var mX, mY;
if (e.touches) {
mX = e.touches[0].clientX;
mY = e.touches[0].clientY;
} else {
try {
mX = e.clientX;
mY = e.clientY;
} catch (e) {
return false
}
}
if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) {
return false
}
if (prevent) {
e_preventDefault(e);
}
var display = cm.display;
var lineBox = display.lineDiv.getBoundingClientRect();
if (mY > lineBox.bottom || !hasHandler(cm, type)) {
return e_defaultPrevented(e)
}
mY -= lineBox.top - display.viewOffset;
for (var i = 0; i < cm.options.gutters.length; ++i) {
var g = display.gutters.childNodes[i];
if (g && g.getBoundingClientRect().right >= mX) {
var line = lineAtHeight(cm.doc, mY);
var gutter = cm.options.gutters[i];
signal(cm, type, cm, line, gutter, e);
return e_defaultPrevented(e)
}
}
}
function clickInGutter(cm, e) {
return gutterEvent(cm, e, "gutterClick", true)
}
// CONTEXT MENU HANDLING
// To make the context menu work, we need to briefly unhide the
// textarea (making it as unobtrusive as possible) to let the
// right-click take effect on it.
function onContextMenu(cm, e) {
if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) {
return
}
if (signalDOMEvent(cm, e, "contextmenu")) {
return
}
if (!captureRightClick) {
cm.display.input.onContextMenu(e);
}
}
function contextMenuInGutter(cm, e) {
if (!hasHandler(cm, "gutterContextMenu")) {
return false
}
return gutterEvent(cm, e, "gutterContextMenu", false)
}
function themeChanged(cm) {
cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
clearCaches(cm);
}
var Init = {
toString: function () {
return "CodeMirror.Init"
}
};
var defaults = {};
var optionHandlers = {};
function defineOptions(CodeMirror) {
var optionHandlers = CodeMirror.optionHandlers;
function option(name, deflt, handle, notOnInit) {
CodeMirror.defaults[name] = deflt;
if (handle) {
optionHandlers[name] =
notOnInit ? function (cm, val, old) {
if (old != Init) {
handle(cm, val, old);
}
} : handle;
}
}
CodeMirror.defineOption = option;
// Passed to option handlers when there is no old value.
CodeMirror.Init = Init;
// These two are, on init, called from the constructor because they
// have to be initialized before the editor can start at all.
option("value", "", function (cm, val) {
return cm.setValue(val);
}, true);
option("mode", null, function (cm, val) {
cm.doc.modeOption = val;
loadMode(cm);
}, true);
option("indentUnit", 2, loadMode, true);
option("indentWithTabs", false);
option("smartIndent", true);
option("tabSize", 4, function (cm) {
resetModeState(cm);
clearCaches(cm);
regChange(cm);
}, true);
option("lineSeparator", null, function (cm, val) {
cm.doc.lineSep = val;
if (!val) {
return
}
var newBreaks = [],
lineNo = cm.doc.first;
cm.doc.iter(function (line) {
for (var pos = 0;;) {
var found = line.text.indexOf(val, pos);
if (found == -1) {
break
}
pos = found + val.length;
newBreaks.push(Pos(lineNo, found));
}
lineNo++;
});
for (var i = newBreaks.length - 1; i >= 0; i--) {
replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length));
}
});
option("specialChars", /[\u0000-\u001f\u007f-\u009f\u00ad\u061c\u200b-\u200f\u2028\u2029\ufeff]/g, function (cm, val, old) {
cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
if (old != Init) {
cm.refresh();
}
});
option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function (cm) {
return cm.refresh();
}, true);
option("electricChars", true);
option("inputStyle", mobile ? "contenteditable" : "textarea", function () {
throw new Error("inputStyle can not (yet) be changed in a running editor") // FIXME
}, true);
option("spellcheck", false, function (cm, val) {
return cm.getInputField().spellcheck = val;
}, true);
option("rtlMoveVisually", !windows);
option("wholeLineUpdateBefore", true);
option("theme", "default", function (cm) {
themeChanged(cm);
guttersChanged(cm);
}, true);
option("keyMap", "default", function (cm, val, old) {
var next = getKeyMap(val);
var prev = old != Init && getKeyMap(old);
if (prev && prev.detach) {
prev.detach(cm, next);
}
if (next.attach) {
next.attach(cm, prev || null);
}
});
option("extraKeys", null);
option("configureMouse", null);
option("lineWrapping", false, wrappingChanged, true);
option("gutters", [], function (cm) {
setGuttersForLineNumbers(cm.options);
guttersChanged(cm);
}, true);
option("fixedGutter", true, function (cm, val) {
cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
cm.refresh();
}, true);
option("coverGutterNextToScrollbar", false, function (cm) {
return updateScrollbars(cm);
}, true);
option("scrollbarStyle", "native", function (cm) {
initScrollbars(cm);
updateScrollbars(cm);
cm.display.scrollbars.setScrollTop(cm.doc.scrollTop);
cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft);
}, true);
option("lineNumbers", false, function (cm) {
setGuttersForLineNumbers(cm.options);
guttersChanged(cm);
}, true);
option("firstLineNumber", 1, guttersChanged, true);
option("lineNumberFormatter", function (integer) {
return integer;
}, guttersChanged, true);
option("showCursorWhenSelecting", false, updateSelection, true);
option("resetSelectionOnContextMenu", true);
option("lineWiseCopyCut", true);
option("pasteLinesPerSelection", true);
option("selectionsMayTouch", false);
option("readOnly", false, function (cm, val) {
if (val == "nocursor") {
onBlur(cm);
cm.display.input.blur();
}
cm.display.input.readOnlyChanged(val);
});
option("disableInput", false, function (cm, val) {
if (!val) {
cm.display.input.reset();
}
}, true);
option("dragDrop", true, dragDropChanged);
option("allowDropFileTypes", null);
option("cursorBlinkRate", 530);
option("cursorScrollMargin", 0);
option("cursorHeight", 1, updateSelection, true);
option("singleCursorHeightPerLine", true, updateSelection, true);
option("workTime", 100);
option("workDelay", 100);
option("flattenSpans", true, resetModeState, true);
option("addModeClass", false, resetModeState, true);
option("pollInterval", 100);
option("undoDepth", 200, function (cm, val) {
return cm.doc.history.undoDepth = val;
});
option("historyEventDelay", 1250);
option("viewportMargin", 10, function (cm) {
return cm.refresh();
}, true);
option("maxHighlightLength", 10000, resetModeState, true);
option("moveInputWithCursor", true, function (cm, val) {
if (!val) {
cm.display.input.resetPosition();
}
});
option("tabindex", null, function (cm, val) {
return cm.display.input.getField().tabIndex = val || "";
});
option("autofocus", null);
option("direction", "ltr", function (cm, val) {
return cm.doc.setDirection(val);
}, true);
option("phrases", null);
}
function guttersChanged(cm) {
updateGutters(cm);
regChange(cm);
alignHorizontally(cm);
}
function dragDropChanged(cm, value, old) {
var wasOn = old && old != Init;
if (!value != !wasOn) {
var funcs = cm.display.dragFunctions;
var toggle = value ? on : off;
toggle(cm.display.scroller, "dragstart", funcs.start);
toggle(cm.display.scroller, "dragenter", funcs.enter);
toggle(cm.display.scroller, "dragover", funcs.over);
toggle(cm.display.scroller, "dragleave", funcs.leave);
toggle(cm.display.scroller, "drop", funcs.drop);
}
}
function wrappingChanged(cm) {
if (cm.options.lineWrapping) {
addClass(cm.display.wrapper, "CodeMirror-wrap");
cm.display.sizer.style.minWidth = "";
cm.display.sizerWidth = null;
} else {
rmClass(cm.display.wrapper, "CodeMirror-wrap");
findMaxLine(cm);
}
estimateLineHeights(cm);
regChange(cm);
clearCaches(cm);
setTimeout(function () {
return updateScrollbars(cm);
}, 100);
}
// A CodeMirror instance represents an editor. This is the object
// that user code is usually dealing with.
function CodeMirror(place, options) {
var this$1 = this;
if (!(this instanceof CodeMirror)) {
return new CodeMirror(place, options)
}
this.options = options = options ? copyObj(options) : {};
// Determine effective options based on given values and defaults.
copyObj(defaults, options, false);
setGuttersForLineNumbers(options);
var doc = options.value;
if (typeof doc == "string") {
doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction);
} else if (options.mode) {
doc.modeOption = options.mode;
}
this.doc = doc;
var input = new CodeMirror.inputStyles[options.inputStyle](this);
var display = this.display = new Display(place, doc, input);
display.wrapper.CodeMirror = this;
updateGutters(this);
themeChanged(this);
if (options.lineWrapping) {
this.display.wrapper.className += " CodeMirror-wrap";
}
initScrollbars(this);
this.state = {
keyMaps: [], // stores maps added by addKeyMap
overlays: [], // highlighting overlays, as added by addOverlay
modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info
overwrite: false,
delayingBlurEvent: false,
focused: false,
suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
pasteKataming: false,
cutKataming: false, // help recognize paste/cut edits in input.poll
selectingText: false,
draggingText: false,
highlight: new Delayed(), // stores highlight worker timeout
keySeq: null, // Unfinished key sequence
specialChars: null
};
if (options.autofocus && !mobile) {
display.input.focus();
}
// Override magic textarea content restore that IE sometimes does
// on our hidden textarea on reload
if (ie && ie_version < 11) {
setTimeout(function () {
return this$1.display.input.reset(true);
}, 20);
}
registerEventHandlers(this);
ensureGlobalHandlers();
startOperation(this);
this.curOp.forceUpdate = true;
attachDoc(this, doc);
if ((options.autofocus && !mobile) || this.hasFocus()) {
setTimeout(bind(onFocus, this), 20);
} else {
onBlur(this);
}
for (var opt in optionHandlers) {
if (optionHandlers.hasOwnProperty(opt)) {
optionHandlers[opt](this$1, options[opt], Init);
}
}
maybeUpdateLineNumberWidth(this);
if (options.finishInit) {
options.finishInit(this);
}
for (var i = 0; i < initHooks.length; ++i) {
initHooks[i](this$1);
}
endOperation(this);
// Suppress optimizelegibility in Webkit, since it breaks text
// measuring on line wrapping boundaries.
if (webkit && options.lineWrapping &&
getComputedStyle(display.lineDiv).textRendering == "optimizelegibility") {
display.lineDiv.style.textRendering = "auto";
}
}
// The default configuration options.
CodeMirror.defaults = defaults;
// Functions to run when options are changed.
CodeMirror.optionHandlers = optionHandlers;
// Attach the necessary event handlers when initializing the editor
function registerEventHandlers(cm) {
var d = cm.display;
on(d.scroller, "mousedown", operation(cm, onMouseDown));
// Older IE's will not fire a second mousedown for a double click
if (ie && ie_version < 11) {
on(d.scroller, "dblclick", operation(cm, function (e) {
if (signalDOMEvent(cm, e)) {
return
}
var pos = posFromMouse(cm, e);
if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) {
return
}
e_preventDefault(e);
var word = cm.findWordAt(pos);
extendSelection(cm.doc, word.anchor, word.head);
}));
} else {
on(d.scroller, "dblclick", function (e) {
return signalDOMEvent(cm, e) || e_preventDefault(e);
});
}
// Some browsers fire contextmenu *after* opening the menu, at
// which point we can't mess with it anymore. Context menu is
// handled in onMouseDown for these browsers.
on(d.scroller, "contextmenu", function (e) {
return onContextMenu(cm, e);
});
// Used to suppress mouse event handling when a touch happens
var touchFinished, prevTouch = {
end: 0
};
function finishTouch() {
if (d.activeTouch) {
touchFinished = setTimeout(function () {
return d.activeTouch = null;
}, 1000);
prevTouch = d.activeTouch;
prevTouch.end = +new Date;
}
}
function isMouseLikeTouchEvent(e) {
if (e.touches.length != 1) {
return false
}
var touch = e.touches[0];
return touch.radiusX <= 1 && touch.radiusY <= 1
}
function farAway(touch, other) {
if (other.left == null) {
return true
}
var dx = other.left - touch.left,
dy = other.top - touch.top;
return dx * dx + dy * dy > 20 * 20
}
on(d.scroller, "touchstart", function (e) {
if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e) && !clickInGutter(cm, e)) {
d.input.ensurePolled();
clearTimeout(touchFinished);
var now = +new Date;
d.activeTouch = {
start: now,
moved: false,
prev: now - prevTouch.end <= 300 ? prevTouch : null
};
if (e.touches.length == 1) {
d.activeTouch.left = e.touches[0].pageX;
d.activeTouch.top = e.touches[0].pageY;
}
}
});
on(d.scroller, "touchmove", function () {
if (d.activeTouch) {
d.activeTouch.moved = true;
}
});
on(d.scroller, "touchend", function (e) {
var touch = d.activeTouch;
if (touch && !eventInWidget(d, e) && touch.left != null &&
!touch.moved && new Date - touch.start < 300) {
var pos = cm.coordsChar(d.activeTouch, "page"),
range;
if (!touch.prev || farAway(touch, touch.prev)) // Single tap
{
range = new Range(pos, pos);
} else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap
{
range = cm.findWordAt(pos);
} else // Triple tap
{
range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0)));
}
cm.setSelection(range.anchor, range.head);
cm.focus();
e_preventDefault(e);
}
finishTouch();
});
on(d.scroller, "touchcancel", finishTouch);
// Sync scrolling between fake scrollbars and real scrollable
// area, ensure viewport is updated when scrolling.
on(d.scroller, "scroll", function () {
if (d.scroller.clientHeight) {
updateScrollTop(cm, d.scroller.scrollTop);
setScrollLeft(cm, d.scroller.scrollLeft, true);
signal(cm, "scroll", cm);
}
});
// Listen to wheel events in order to try and update the viewport on time.
on(d.scroller, "mousewheel", function (e) {
return onScrollWheel(cm, e);
});
on(d.scroller, "DOMMouseScroll", function (e) {
return onScrollWheel(cm, e);
});
// Prevent wrapper from ever scrolling
on(d.wrapper, "scroll", function () {
return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0;
});
d.dragFunctions = {
enter: function (e) {
if (!signalDOMEvent(cm, e)) {
e_stop(e);
}
},
over: function (e) {
if (!signalDOMEvent(cm, e)) {
onDragOver(cm, e);
e_stop(e);
}
},
start: function (e) {
return onDragStart(cm, e);
},
drop: operation(cm, onDrop),
leave: function (e) {
if (!signalDOMEvent(cm, e)) {
clearDragCursor(cm);
}
}
};
var inp = d.input.getField();
on(inp, "keyup", function (e) {
return onKeyUp.call(cm, e);
});
on(inp, "keydown", operation(cm, onKeyDown));
on(inp, "keypress", operation(cm, onKeyPress));
on(inp, "focus", function (e) {
return onFocus(cm, e);
});
on(inp, "blur", function (e) {
return onBlur(cm, e);
});
}
var initHooks = [];
CodeMirror.defineInitHook = function (f) {
return initHooks.push(f);
};
// Indent the given line. The how parameter can be "smart",
// "add"/null, "subtract", or "prev". When aggressive is false
// (typically set to true for forced single-line indents), empty
// lines are not indented, and places where the mode returns Pass
// are left alone.
function indentLine(cm, n, how, aggressive) {
var doc = cm.doc,
state;
if (how == null) {
how = "add";
}
if (how == "smart") {
// Fall back to "prev" when the mode doesn't have an indentation
// method.
if (!doc.mode.indent) {
how = "prev";
} else {
state = getContextBefore(cm, n).state;
}
}
var tabSize = cm.options.tabSize;
var line = getLine(doc, n),
curSpace = countColumn(line.text, null, tabSize);
if (line.stateAfter) {
line.stateAfter = null;
}
var curSpaceString = line.text.match(/^\s*/)[0],
indentation;
if (!aggressive && !/\S/.test(line.text)) {
indentation = 0;
how = "not";
} else if (how == "smart") {
indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
if (indentation == Pass || indentation > 150) {
if (!aggressive) {
return
}
how = "prev";
}
}
if (how == "prev") {
if (n > doc.first) {
indentation = countColumn(getLine(doc, n - 1).text, null, tabSize);
} else {
indentation = 0;
}
} else if (how == "add") {
indentation = curSpace + cm.options.indentUnit;
} else if (how == "subtract") {
indentation = curSpace - cm.options.indentUnit;
} else if (typeof how == "number") {
indentation = curSpace + how;
}
indentation = Math.max(0, indentation);
var indentString = "",
pos = 0;
if (cm.options.indentWithTabs) {
for (var i = Math.floor(indentation / tabSize); i; --i) {
pos += tabSize;
indentString += "\t";
}
}
if (pos < indentation) {
indentString += spaceStr(indentation - pos);
}
if (indentString != curSpaceString) {
replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
line.stateAfter = null;
return true
} else {
// Ensure that, if the cursor was in the whitespace at the start
// of the line, it is moved to the end of that space.
for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) {
var range = doc.sel.ranges[i$1];
if (range.head.line == n && range.head.ch < curSpaceString.length) {
var pos$1 = Pos(n, curSpaceString.length);
replaceOneSelection(doc, i$1, new Range(pos$1, pos$1));
break
}
}
}
}
// This will be set to a {lineWise: bool, text: [string]} object, so
// that, when pasting, we know what kind of selections the copied
// text was made out of.
var lastCopied = null;
function setLastCopied(newLastCopied) {
lastCopied = newLastCopied;
}
function applyTextInput(cm, inserted, deleted, sel, origin) {
var doc = cm.doc;
cm.display.shift = false;
if (!sel) {
sel = doc.sel;
}
var paste = cm.state.pasteKataming || origin == "paste";
var textLines = splitLinesAuto(inserted),
multiPaste = null;
// When pasting N lines into N selections, insert one line per selection
if (paste && sel.ranges.length > 1) {
if (lastCopied && lastCopied.text.join("\n") == inserted) {
if (sel.ranges.length % lastCopied.text.length == 0) {
multiPaste = [];
for (var i = 0; i < lastCopied.text.length; i++) {
multiPaste.push(doc.splitLines(lastCopied.text[i]));
}
}
} else if (textLines.length == sel.ranges.length && cm.options.pasteLinesPerSelection) {
multiPaste = map(textLines, function (l) {
return [l];
});
}
}
var updateInput = cm.curOp.updateInput;
// Normal behavior is to insert the new text into every selection
for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) {
var range$$1 = sel.ranges[i$1];
var from = range$$1.from(),
to = range$$1.to();
if (range$$1.empty()) {
if (deleted && deleted > 0) // Handle deletion
{
from = Pos(from.line, from.ch - deleted);
} else if (cm.state.overwrite && !paste) // Handle overwrite
{
to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));
} else if (paste && lastCopied && lastCopied.lineWise && lastCopied.text.join("\n") == inserted) {
from = to = Pos(from.line, 0);
}
}
var changeEvent = {
from: from,
to: to,
text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines,
origin: origin || (paste ? "paste" : cm.state.cutKataming ? "cut" : "+input")
};
makeChange(cm.doc, changeEvent);
signalLater(cm, "inputRead", cm, changeEvent);
}
if (inserted && !paste) {
triggerElectric(cm, inserted);
}
ensureCursorVisible(cm);
if (cm.curOp.updateInput < 2) {
cm.curOp.updateInput = updateInput;
}
cm.curOp.typing = true;
cm.state.pasteKataming = cm.state.cutKataming = false;
}
function handlePaste(e, cm) {
var pasted = e.clipboardData && e.clipboardData.getData("Text");
if (pasted) {
e.preventDefault();
if (!cm.isReadOnly() && !cm.options.disableInput) {
runInOp(cm, function () {
return applyTextInput(cm, pasted, 0, null, "paste");
});
}
return true
}
}
function triggerElectric(cm, inserted) {
// When an 'electric' character is inserted, immediately trigger a reindent
if (!cm.options.electricChars || !cm.options.smartIndent) {
return
}
var sel = cm.doc.sel;
for (var i = sel.ranges.length - 1; i >= 0; i--) {
var range$$1 = sel.ranges[i];
if (range$$1.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range$$1.head.line)) {
continue
}
var mode = cm.getModeAt(range$$1.head);
var indented = false;
if (mode.electricChars) {
for (var j = 0; j < mode.electricChars.length; j++) {
if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
indented = indentLine(cm, range$$1.head.line, "smart");
break
}
}
} else if (mode.electricInput) {
if (mode.electricInput.test(getLine(cm.doc, range$$1.head.line).text.slice(0, range$$1.head.ch))) {
indented = indentLine(cm, range$$1.head.line, "smart");
}
}
if (indented) {
signalLater(cm, "electricInput", cm, range$$1.head.line);
}
}
}
function copyableRanges(cm) {
var text = [],
ranges = [];
for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
var line = cm.doc.sel.ranges[i].head.line;
var lineRange = {
anchor: Pos(line, 0),
head: Pos(line + 1, 0)
};
ranges.push(lineRange);
text.push(cm.getRange(lineRange.anchor, lineRange.head));
}
return {
text: text,
ranges: ranges
}
}
function disableBrowserMagic(field, spellcheck) {
field.setAttribute("autocorrect", "off");
field.setAttribute("autocapitalize", "off");
field.setAttribute("spellcheck", !!spellcheck);
}
function hiddenTextarea() {
var te = elt("textarea", null, null, "position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; outline: none");
var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
// The textarea is kept positioned near the cursor to prevent the
// fact that it'll be scrolled into view on input from scrolling
// our fake cursor out of view. On webkit, when wrap=off, paste is
// very slow. So make the area wide instead.
if (webkit) {
te.style.width = "1000px";
} else {
te.setAttribute("wrap", "off");
}
// If border: 0; -- iOS fails to open keyboard (issue #1287)
if (ios) {
te.style.border = "1px solid black";
}
disableBrowserMagic(te);
return div
}
// The publicly visible API. Note that methodOp(f) means
// 'wrap f in an operation, performed on its `this` parameter'.
// This is not the complete set of editor methods. Most of the
// methods defined on the Doc type are also injected into
// CodeMirror.prototype, for backwards compatibility and
// convenience.
function addEditorMethods(CodeMirror) {
var optionHandlers = CodeMirror.optionHandlers;
var helpers = CodeMirror.helpers = {};
CodeMirror.prototype = {
constructor: CodeMirror,
focus: function () {
window.focus();
this.display.input.focus();
},
setOption: function (option, value) {
var options = this.options,
old = options[option];
if (options[option] == value && option != "mode") {
return
}
options[option] = value;
if (optionHandlers.hasOwnProperty(option)) {
operation(this, optionHandlers[option])(this, value, old);
}
signal(this, "optionChange", this, option);
},
getOption: function (option) {
return this.options[option]
},
getDoc: function () {
return this.doc
},
addKeyMap: function (map$$1, bottom) {
this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map$$1));
},
removeKeyMap: function (map$$1) {
var maps = this.state.keyMaps;
for (var i = 0; i < maps.length; ++i) {
if (maps[i] == map$$1 || maps[i].name == map$$1) {
maps.splice(i, 1);
return true
}
}
},
addOverlay: methodOp(function (spec, options) {
var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
if (mode.startState) {
throw new Error("Overlays may not be stateful.")
}
insertSorted(this.state.overlays, {
mode: mode,
modeSpec: spec,
opaque: options && options.opaque,
priority: (options && options.priority) || 0
},
function (overlay) {
return overlay.priority;
});
this.state.modeGen++;
regChange(this);
}),
removeOverlay: methodOp(function (spec) {
var this$1 = this;
var overlays = this.state.overlays;
for (var i = 0; i < overlays.length; ++i) {
var cur = overlays[i].modeSpec;
if (cur == spec || typeof spec == "string" && cur.name == spec) {
overlays.splice(i, 1);
this$1.state.modeGen++;
regChange(this$1);
return
}
}
}),
indentLine: methodOp(function (n, dir, aggressive) {
if (typeof dir != "string" && typeof dir != "number") {
if (dir == null) {
dir = this.options.smartIndent ? "smart" : "prev";
} else {
dir = dir ? "add" : "subtract";
}
}
if (isLine(this.doc, n)) {
indentLine(this, n, dir, aggressive);
}
}),
indentSelection: methodOp(function (how) {
var this$1 = this;
var ranges = this.doc.sel.ranges,
end = -1;
for (var i = 0; i < ranges.length; i++) {
var range$$1 = ranges[i];
if (!range$$1.empty()) {
var from = range$$1.from(),
to = range$$1.to();
var start = Math.max(end, from.line);
end = Math.min(this$1.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
for (var j = start; j < end; ++j) {
indentLine(this$1, j, how);
}
var newRanges = this$1.doc.sel.ranges;
if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0) {
replaceOneSelection(this$1.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll);
}
} else if (range$$1.head.line > end) {
indentLine(this$1, range$$1.head.line, how, true);
end = range$$1.head.line;
if (i == this$1.doc.sel.primIndex) {
ensureCursorVisible(this$1);
}
}
}
}),
// Fetch the parser token for a given character. Useful for hacks
// that want to inspect the mode state (say, for completion).
getTokenAt: function (pos, precise) {
return takeToken(this, pos, precise)
},
getLineTokens: function (line, precise) {
return takeToken(this, Pos(line), precise, true)
},
getTokenTypeAt: function (pos) {
pos = clipPos(this.doc, pos);
var styles = getLineStyles(this, getLine(this.doc, pos.line));
var before = 0,
after = (styles.length - 1) / 2,
ch = pos.ch;
var type;
if (ch == 0) {
type = styles[2];
} else {
for (;;) {
var mid = (before + after) >> 1;
if ((mid ? styles[mid * 2 - 1] : 0) >= ch) {
after = mid;
} else if (styles[mid * 2 + 1] < ch) {
before = mid + 1;
} else {
type = styles[mid * 2 + 2];
break
}
}
}
var cut = type ? type.indexOf("overlay ") : -1;
return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1)
},
getModeAt: function (pos) {
var mode = this.doc.mode;
if (!mode.innerMode) {
return mode
}
return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode
},
getHelper: function (pos, type) {
return this.getHelpers(pos, type)[0]
},
getHelpers: function (pos, type) {
var this$1 = this;
var found = [];
if (!helpers.hasOwnProperty(type)) {
return found
}
var help = helpers[type],
mode = this.getModeAt(pos);
if (typeof mode[type] == "string") {
if (help[mode[type]]) {
found.push(help[mode[type]]);
}
} else if (mode[type]) {
for (var i = 0; i < mode[type].length; i++) {
var val = help[mode[type][i]];
if (val) {
found.push(val);
}
}
} else if (mode.helperType && help[mode.helperType]) {
found.push(help[mode.helperType]);
} else if (help[mode.name]) {
found.push(help[mode.name]);
}
for (var i$1 = 0; i$1 < help._global.length; i$1++) {
var cur = help._global[i$1];
if (cur.pred(mode, this$1) && indexOf(found, cur.val) == -1) {
found.push(cur.val);
}
}
return found
},
getStateAfter: function (line, precise) {
var doc = this.doc;
line = clipLine(doc, line == null ? doc.first + doc.size - 1 : line);
return getContextBefore(this, line + 1, precise).state
},
cursorCoords: function (start, mode) {
var pos, range$$1 = this.doc.sel.primary();
if (start == null) {
pos = range$$1.head;
} else if (typeof start == "object") {
pos = clipPos(this.doc, start);
} else {
pos = start ? range$$1.from() : range$$1.to();
}
return cursorCoords(this, pos, mode || "page")
},
charCoords: function (pos, mode) {
return charCoords(this, clipPos(this.doc, pos), mode || "page")
},
coordsChar: function (coords, mode) {
coords = fromCoordSystem(this, coords, mode || "page");
return coordsChar(this, coords.left, coords.top)
},
lineAtHeight: function (height, mode) {
height = fromCoordSystem(this, {
top: height,
left: 0
}, mode || "page").top;
return lineAtHeight(this.doc, height + this.display.viewOffset)
},
heightAtLine: function (line, mode, includeWidgets) {
var end = false,
lineObj;
if (typeof line == "number") {
var last = this.doc.first + this.doc.size - 1;
if (line < this.doc.first) {
line = this.doc.first;
} else if (line > last) {
line = last;
end = true;
}
lineObj = getLine(this.doc, line);
} else {
lineObj = line;
}
return intoCoordSystem(this, lineObj, {
top: 0,
left: 0
}, mode || "page", includeWidgets || end).top +
(end ? this.doc.height - heightAtLine(lineObj) : 0)
},
defaultTextHeight: function () {
return textHeight(this.display)
},
defaultCharWidth: function () {
return charWidth(this.display)
},
getViewport: function () {
return {
from: this.display.viewFrom,
to: this.display.viewTo
}
},
addWidget: function (pos, node, scroll, vert, horiz) {
var display = this.display;
pos = cursorCoords(this, clipPos(this.doc, pos));
var top = pos.bottom,
left = pos.left;
node.style.position = "absolute";
node.setAttribute("cm-ignore-events", "true");
this.display.input.setUneditable(node);
display.sizer.appendChild(node);
if (vert == "over") {
top = pos.top;
} else if (vert == "above" || vert == "near") {
var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
// Default to positioning above (if specified and possible); otherwise default to positioning below
if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) {
top = pos.top - node.offsetHeight;
} else if (pos.bottom + node.offsetHeight <= vspace) {
top = pos.bottom;
}
if (left + node.offsetWidth > hspace) {
left = hspace - node.offsetWidth;
}
}
node.style.top = top + "px";
node.style.left = node.style.right = "";
if (horiz == "right") {
left = display.sizer.clientWidth - node.offsetWidth;
node.style.right = "0px";
} else {
if (horiz == "left") {
left = 0;
} else if (horiz == "middle") {
left = (display.sizer.clientWidth - node.offsetWidth) / 2;
}
node.style.left = left + "px";
}
if (scroll) {
scrollIntoView(this, {
left: left,
top: top,
right: left + node.offsetWidth,
bottom: top + node.offsetHeight
});
}
},
triggerOnKeyDown: methodOp(onKeyDown),
triggerOnKeyPress: methodOp(onKeyPress),
triggerOnKeyUp: onKeyUp,
triggerOnMouseDown: methodOp(onMouseDown),
execCommand: function (cmd) {
if (commands.hasOwnProperty(cmd)) {
return commands[cmd].call(null, this)
}
},
triggerElectric: methodOp(function (text) {
triggerElectric(this, text);
}),
findPosH: function (from, amount, unit, visually) {
var this$1 = this;
var dir = 1;
if (amount < 0) {
dir = -1;
amount = -amount;
}
var cur = clipPos(this.doc, from);
for (var i = 0; i < amount; ++i) {
cur = findPosH(this$1.doc, cur, dir, unit, visually);
if (cur.hitSide) {
break
}
}
return cur
},
moveH: methodOp(function (dir, unit) {
var this$1 = this;
this.extendSelectionsBy(function (range$$1) {
if (this$1.display.shift || this$1.doc.extend || range$$1.empty()) {
return findPosH(this$1.doc, range$$1.head, dir, unit, this$1.options.rtlMoveVisually)
} else {
return dir < 0 ? range$$1.from() : range$$1.to()
}
}, sel_move);
}),
deleteH: methodOp(function (dir, unit) {
var sel = this.doc.sel,
doc = this.doc;
if (sel.somethingSelected()) {
doc.replaceSelection("", null, "+delete");
} else {
deleteNearSelection(this, function (range$$1) {
var other = findPosH(doc, range$$1.head, dir, unit, false);
return dir < 0 ? {
from: other,
to: range$$1.head
} : {
from: range$$1.head,
to: other
}
});
}
}),
findPosV: function (from, amount, unit, goalColumn) {
var this$1 = this;
var dir = 1,
x = goalColumn;
if (amount < 0) {
dir = -1;
amount = -amount;
}
var cur = clipPos(this.doc, from);
for (var i = 0; i < amount; ++i) {
var coords = cursorCoords(this$1, cur, "div");
if (x == null) {
x = coords.left;
} else {
coords.left = x;
}
cur = findPosV(this$1, coords, dir, unit);
if (cur.hitSide) {
break
}
}
return cur
},
moveV: methodOp(function (dir, unit) {
var this$1 = this;
var doc = this.doc,
goals = [];
var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected();
doc.extendSelectionsBy(function (range$$1) {
if (collapse) {
return dir < 0 ? range$$1.from() : range$$1.to()
}
var headPos = cursorCoords(this$1, range$$1.head, "div");
if (range$$1.goalColumn != null) {
headPos.left = range$$1.goalColumn;
}
goals.push(headPos.left);
var pos = findPosV(this$1, headPos, dir, unit);
if (unit == "page" && range$$1 == doc.sel.primary()) {
addToScrollTop(this$1, charCoords(this$1, pos, "div").top - headPos.top);
}
return pos
}, sel_move);
if (goals.length) {
for (var i = 0; i < doc.sel.ranges.length; i++) {
doc.sel.ranges[i].goalColumn = goals[i];
}
}
}),
// Find the word at the given position (as returned by coordsChar).
findWordAt: function (pos) {
var doc = this.doc,
line = getLine(doc, pos.line).text;
var start = pos.ch,
end = pos.ch;
if (line) {
var helper = this.getHelper(pos, "wordChars");
if ((pos.sticky == "before" || end == line.length) && start) {
--start;
} else {
++end;
}
var startChar = line.charAt(start);
var check = isWordChar(startChar, helper) ?
function (ch) {
return isWordChar(ch, helper);
} :
/\s/.test(startChar) ? function (ch) {
return /\s/.test(ch);
} :
function (ch) {
return (!/\s/.test(ch) && !isWordChar(ch));
};
while (start > 0 && check(line.charAt(start - 1))) {
--start;
}
while (end < line.length && check(line.charAt(end))) {
++end;
}
}
return new Range(Pos(pos.line, start), Pos(pos.line, end))
},
toggleOverwrite: function (value) {
if (value != null && value == this.state.overwrite) {
return
}
if (this.state.overwrite = !this.state.overwrite) {
addClass(this.display.cursorDiv, "CodeMirror-overwrite");
} else {
rmClass(this.display.cursorDiv, "CodeMirror-overwrite");
}
signal(this, "overwriteToggle", this, this.state.overwrite);
},
hasFocus: function () {
return this.display.input.getField() == activeElt()
},
isReadOnly: function () {
return !!(this.options.readOnly || this.doc.cantEdit)
},
scrollTo: methodOp(function (x, y) {
scrollToCoords(this, x, y);
}),
getScrollInfo: function () {
var scroller = this.display.scroller;
return {
left: scroller.scrollLeft,
top: scroller.scrollTop,
height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight,
width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth,
clientHeight: displayHeight(this),
clientWidth: displayWidth(this)
}
},
scrollIntoView: methodOp(function (range$$1, margin) {
if (range$$1 == null) {
range$$1 = {
from: this.doc.sel.primary().head,
to: null
};
if (margin == null) {
margin = this.options.cursorScrollMargin;
}
} else if (typeof range$$1 == "number") {
range$$1 = {
from: Pos(range$$1, 0),
to: null
};
} else if (range$$1.from == null) {
range$$1 = {
from: range$$1,
to: null
};
}
if (!range$$1.to) {
range$$1.to = range$$1.from;
}
range$$1.margin = margin || 0;
if (range$$1.from.line != null) {
scrollToRange(this, range$$1);
} else {
scrollToCoordsRange(this, range$$1.from, range$$1.to, range$$1.margin);
}
}),
setSize: methodOp(function (width, height) {
var this$1 = this;
var interpret = function (val) {
return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
};
if (width != null) {
this.display.wrapper.style.width = interpret(width);
}
if (height != null) {
this.display.wrapper.style.height = interpret(height);
}
if (this.options.lineWrapping) {
clearLineMeasurementCache(this);
}
var lineNo$$1 = this.display.viewFrom;
this.doc.iter(lineNo$$1, this.display.viewTo, function (line) {
if (line.widgets) {
for (var i = 0; i < line.widgets.length; i++) {
if (line.widgets[i].noHScroll) {
regLineChange(this$1, lineNo$$1, "widget");
break
}
}
}
++lineNo$$1;
});
this.curOp.forceUpdate = true;
signal(this, "refresh", this);
}),
operation: function (f) {
return runInOp(this, f)
},
startOperation: function () {
return startOperation(this)
},
endOperation: function () {
return endOperation(this)
},
refresh: methodOp(function () {
var oldHeight = this.display.cachedTextHeight;
regChange(this);
this.curOp.forceUpdate = true;
clearCaches(this);
scrollToCoords(this, this.doc.scrollLeft, this.doc.scrollTop);
updateGutterSpace(this);
if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5) {
estimateLineHeights(this);
}
signal(this, "refresh", this);
}),
swapDoc: methodOp(function (doc) {
var old = this.doc;
old.cm = null;
attachDoc(this, doc);
clearCaches(this);
this.display.input.reset();
scrollToCoords(this, doc.scrollLeft, doc.scrollTop);
this.curOp.forceScroll = true;
signalLater(this, "swapDoc", this, old);
return old
}),
phrase: function (phraseText) {
var phrases = this.options.phrases;
return phrases && Object.prototype.hasOwnProperty.call(phrases, phraseText) ? phrases[phraseText] : phraseText
},
getInputField: function () {
return this.display.input.getField()
},
getWrapperElement: function () {
return this.display.wrapper
},
getScrollerElement: function () {
return this.display.scroller
},
getGutterElement: function () {
return this.display.gutters
}
};
eventMixin(CodeMirror);
CodeMirror.registerHelper = function (type, name, value) {
if (!helpers.hasOwnProperty(type)) {
helpers[type] = CodeMirror[type] = {
_global: []
};
}
helpers[type][name] = value;
};
CodeMirror.registerGlobalHelper = function (type, name, predicate, value) {
CodeMirror.registerHelper(type, name, value);
helpers[type]._global.push({
pred: predicate,
val: value
});
};
}
// Used for horizontal relative motion. Dir is -1 or 1 (left or
// right), unit can be "char", "column" (like char, but doesn't
// cross line boundaries), "word" (across next word), or "group" (to
// the start of next group of word or non-word-non-whitespace
// chars). The visually param controls whether, in right-to-left
// text, direction 1 means to move towards the next index in the
// string, or towards the character to the right of the current
// position. The resulting position will have a hitSide=true
// property if it reached the end of the document.
function findPosH(doc, pos, dir, unit, visually) {
var oldPos = pos;
var origDir = dir;
var lineObj = getLine(doc, pos.line);
function findNextLine() {
var l = pos.line + dir;
if (l < doc.first || l >= doc.first + doc.size) {
return false
}
pos = new Pos(l, pos.ch, pos.sticky);
return lineObj = getLine(doc, l)
}
function moveOnce(boundToLine) {
var next;
if (visually) {
next = moveVisually(doc.cm, lineObj, pos, dir);
} else {
next = moveLogically(lineObj, pos, dir);
}
if (next == null) {
if (!boundToLine && findNextLine()) {
pos = endOfLine(visually, doc.cm, lineObj, pos.line, dir);
} else {
return false
}
} else {
pos = next;
}
return true
}
if (unit == "char") {
moveOnce();
} else if (unit == "column") {
moveOnce(true);
} else if (unit == "word" || unit == "group") {
var sawType = null,
group = unit == "group";
var helper = doc.cm && doc.cm.getHelper(pos, "wordChars");
for (var first = true;; first = false) {
if (dir < 0 && !moveOnce(!first)) {
break
}
var cur = lineObj.text.charAt(pos.ch) || "\n";
var type = isWordChar(cur, helper) ? "w" :
group && cur == "\n" ? "n" :
!group || /\s/.test(cur) ? null :
"p";
if (group && !first && !type) {
type = "s";
}
if (sawType && sawType != type) {
if (dir < 0) {
dir = 1;
moveOnce();
pos.sticky = "after";
}
break
}
if (type) {
sawType = type;
}
if (dir > 0 && !moveOnce(!first)) {
break
}
}
}
var result = skipAtomic(doc, pos, oldPos, origDir, true);
if (equalCursorPos(oldPos, result)) {
result.hitSide = true;
}
return result
}
// For relative vertical movement. Dir may be -1 or 1. Unit can be
// "page" or "line". The resulting position will have a hitSide=true
// property if it reached the end of the document.
function findPosV(cm, pos, dir, unit) {
var doc = cm.doc,
x = pos.left,
y;
if (unit == "page") {
var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3);
y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount;
} else if (unit == "line") {
y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
}
var target;
for (;;) {
target = coordsChar(cm, x, y);
if (!target.outside) {
break
}
if (dir < 0 ? y <= 0 : y >= doc.height) {
target.hitSide = true;
break
}
y += dir * 5;
}
return target
}
// CONTENTEDITABLE INPUT STYLE
var ContentEditableInput = function (cm) {
this.cm = cm;
this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null;
this.polling = new Delayed();
this.composing = null;
this.gracePeriod = false;
this.readDOMTimeout = null;
};
ContentEditableInput.prototype.init = function (display) {
var this$1 = this;
var input = this,
cm = input.cm;
var div = input.div = display.lineDiv;
disableBrowserMagic(div, cm.options.spellcheck);
on(div, "paste", function (e) {
if (signalDOMEvent(cm, e) || handlePaste(e, cm)) {
return
}
// IE doesn't fire input events, so we schedule a read for the pasted content in this way
if (ie_version <= 11) {
setTimeout(operation(cm, function () {
return this$1.updateFromDOM();
}), 20);
}
});
on(div, "compositionstart", function (e) {
this$1.composing = {
data: e.data,
done: false
};
});
on(div, "compositionupdate", function (e) {
if (!this$1.composing) {
this$1.composing = {
data: e.data,
done: false
};
}
});
on(div, "compositionend", function (e) {
if (this$1.composing) {
if (e.data != this$1.composing.data) {
this$1.readFromDOMSoon();
}
this$1.composing.done = true;
}
});
on(div, "touchstart", function () {
return input.forceCompositionEnd();
});
on(div, "input", function () {
if (!this$1.composing) {
this$1.readFromDOMSoon();
}
});
function onCopyCut(e) {
if (signalDOMEvent(cm, e)) {
return
}
if (cm.somethingSelected()) {
setLastCopied({
lineWise: false,
text: cm.getSelections()
});
if (e.type == "cut") {
cm.replaceSelection("", null, "cut");
}
} else if (!cm.options.lineWiseCopyCut) {
return
} else {
var ranges = copyableRanges(cm);
setLastCopied({
lineWise: true,
text: ranges.text
});
if (e.type == "cut") {
cm.operation(function () {
cm.setSelections(ranges.ranges, 0, sel_dontScroll);
cm.replaceSelection("", null, "cut");
});
}
}
if (e.clipboardData) {
e.clipboardData.clearData();
var content = lastCopied.text.join("\n");
// iOS exposes the clipboard API, but seems to discard content inserted into it
e.clipboardData.setData("Text", content);
if (e.clipboardData.getData("Text") == content) {
e.preventDefault();
return
}
}
// Old-fashioned briefly-focus-a-textarea hack
var kludge = hiddenTextarea(),
te = kludge.firstChild;
cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild);
te.value = lastCopied.text.join("\n");
var hadFocus = document.activeElement;
selectInput(te);
setTimeout(function () {
cm.display.lineSpace.removeChild(kludge);
hadFocus.focus();
if (hadFocus == div) {
input.showPrimarySelection();
}
}, 50);
}
on(div, "copy", onCopyCut);
on(div, "cut", onCopyCut);
};
ContentEditableInput.prototype.prepareSelection = function () {
var result = prepareSelection(this.cm, false);
result.focus = this.cm.state.focused;
return result
};
ContentEditableInput.prototype.showSelection = function (info, takeFocus) {
if (!info || !this.cm.display.view.length) {
return
}
if (info.focus || takeFocus) {
this.showPrimarySelection();
}
this.showMultipleSelections(info);
};
ContentEditableInput.prototype.getSelection = function () {
return this.cm.display.wrapper.ownerDocument.getSelection()
};
ContentEditableInput.prototype.showPrimarySelection = function () {
var sel = this.getSelection(),
cm = this.cm,
prim = cm.doc.sel.primary();
var from = prim.from(),
to = prim.to();
if (cm.display.viewTo == cm.display.viewFrom || from.line >= cm.display.viewTo || to.line < cm.display.viewFrom) {
sel.removeAllRanges();
return
}
var curAnchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
var curFocus = domToPos(cm, sel.focusNode, sel.focusOffset);
if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
cmp(minPos(curAnchor, curFocus), from) == 0 &&
cmp(maxPos(curAnchor, curFocus), to) == 0) {
return
}
var view = cm.display.view;
var start = (from.line >= cm.display.viewFrom && posToDOM(cm, from)) || {
node: view[0].measure.map[2],
offset: 0
};
var end = to.line < cm.display.viewTo && posToDOM(cm, to);
if (!end) {
var measure = view[view.length - 1].measure;
var map$$1 = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map;
end = {
node: map$$1[map$$1.length - 1],
offset: map$$1[map$$1.length - 2] - map$$1[map$$1.length - 3]
};
}
if (!start || !end) {
sel.removeAllRanges();
return
}
var old = sel.rangeCount && sel.getRangeAt(0),
rng;
try {
rng = range(start.node, start.offset, end.offset, end.node);
} catch (e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible
if (rng) {
if (!gecko && cm.state.focused) {
sel.collapse(start.node, start.offset);
if (!rng.collapsed) {
sel.removeAllRanges();
sel.addRange(rng);
}
} else {
sel.removeAllRanges();
sel.addRange(rng);
}
if (old && sel.anchorNode == null) {
sel.addRange(old);
} else if (gecko) {
this.startGracePeriod();
}
}
this.rememberSelection();
};
ContentEditableInput.prototype.startGracePeriod = function () {
var this$1 = this;
clearTimeout(this.gracePeriod);
this.gracePeriod = setTimeout(function () {
this$1.gracePeriod = false;
if (this$1.selectionChanged()) {
this$1.cm.operation(function () {
return this$1.cm.curOp.selectionChanged = true;
});
}
}, 20);
};
ContentEditableInput.prototype.showMultipleSelections = function (info) {
removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors);
removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection);
};
ContentEditableInput.prototype.rememberSelection = function () {
var sel = this.getSelection();
this.lastAnchorNode = sel.anchorNode;
this.lastAnchorOffset = sel.anchorOffset;
this.lastFocusNode = sel.focusNode;
this.lastFocusOffset = sel.focusOffset;
};
ContentEditableInput.prototype.selectionInEditor = function () {
var sel = this.getSelection();
if (!sel.rangeCount) {
return false
}
var node = sel.getRangeAt(0).commonAncestorContainer;
return contains(this.div, node)
};
ContentEditableInput.prototype.focus = function () {
if (this.cm.options.readOnly != "nocursor") {
if (!this.selectionInEditor()) {
this.showSelection(this.prepareSelection(), true);
}
this.div.focus();
}
};
ContentEditableInput.prototype.blur = function () {
this.div.blur();
};
ContentEditableInput.prototype.getField = function () {
return this.div
};
ContentEditableInput.prototype.supportsTouch = function () {
return true
};
ContentEditableInput.prototype.receivedFocus = function () {
var input = this;
if (this.selectionInEditor()) {
this.pollSelection();
} else {
runInOp(this.cm, function () {
return input.cm.curOp.selectionChanged = true;
});
}
function poll() {
if (input.cm.state.focused) {
input.pollSelection();
input.polling.set(input.cm.options.pollInterval, poll);
}
}
this.polling.set(this.cm.options.pollInterval, poll);
};
ContentEditableInput.prototype.selectionChanged = function () {
var sel = this.getSelection();
return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||
sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset
};
ContentEditableInput.prototype.pollSelection = function () {
if (this.readDOMTimeout != null || this.gracePeriod || !this.selectionChanged()) {
return
}
var sel = this.getSelection(),
cm = this.cm;
// On Android Chrome (version 56, at least), backspacing into an
// uneditable block element will put the cursor in that element,
// and then, because it's not editable, hide the virtual keyboard.
// Because Android doesn't allow us to actually detect backspace
// presses in a sane way, this code checks for when that happens
// and simulates a backspace press in this case.
if (android && chrome && this.cm.options.gutters.length && isInGutter(sel.anchorNode)) {
this.cm.triggerOnKeyDown({
type: "keydown",
keyCode: 8,
preventDefault: Math.abs
});
this.blur();
this.focus();
return
}
if (this.composing) {
return
}
this.rememberSelection();
var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset);
var head = domToPos(cm, sel.focusNode, sel.focusOffset);
if (anchor && head) {
runInOp(cm, function () {
setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll);
if (anchor.bad || head.bad) {
cm.curOp.selectionChanged = true;
}
});
}
};
ContentEditableInput.prototype.pollContent = function () {
if (this.readDOMTimeout != null) {
clearTimeout(this.readDOMTimeout);
this.readDOMTimeout = null;
}
var cm = this.cm,
display = cm.display,
sel = cm.doc.sel.primary();
var from = sel.from(),
to = sel.to();
if (from.ch == 0 && from.line > cm.firstLine()) {
from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length);
}
if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine()) {
to = Pos(to.line + 1, 0);
}
if (from.line < display.viewFrom || to.line > display.viewTo - 1) {
return false
}
var fromIndex, fromLine, fromNode;
if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) {
fromLine = lineNo(display.view[0].line);
fromNode = display.view[0].node;
} else {
fromLine = lineNo(display.view[fromIndex].line);
fromNode = display.view[fromIndex - 1].node.nextSibling;
}
var toIndex = findViewIndex(cm, to.line);
var toLine, toNode;
if (toIndex == display.view.length - 1) {
toLine = display.viewTo - 1;
toNode = display.lineDiv.lastChild;
} else {
toLine = lineNo(display.view[toIndex + 1].line) - 1;
toNode = display.view[toIndex + 1].node.previousSibling;
}
if (!fromNode) {
return false
}
var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine));
var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length));
while (newText.length > 1 && oldText.length > 1) {
if (lst(newText) == lst(oldText)) {
newText.pop();
oldText.pop();
toLine--;
} else if (newText[0] == oldText[0]) {
newText.shift();
oldText.shift();
fromLine++;
} else {
break
}
}
var cutFront = 0,
cutEnd = 0;
var newTop = newText[0],
oldTop = oldText[0],
maxCutFront = Math.min(newTop.length, oldTop.length);
while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront)) {
++cutFront;
}
var newBot = lst(newText),
oldBot = lst(oldText);
var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0),
oldBot.length - (oldText.length == 1 ? cutFront : 0));
while (cutEnd < maxCutEnd &&
newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) {
++cutEnd;
}
// Try to move start of change to start of selection if ambiguous
if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) {
while (cutFront && cutFront > from.ch &&
newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) {
cutFront--;
cutEnd++;
}
}
newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\u200b+/, "");
newText[0] = newText[0].slice(cutFront).replace(/\u200b+$/, "");
var chFrom = Pos(fromLine, cutFront);
var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0);
if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) {
replaceRange(cm.doc, newText, chFrom, chTo, "+input");
return true
}
};
ContentEditableInput.prototype.ensurePolled = function () {
this.forceCompositionEnd();
};
ContentEditableInput.prototype.reset = function () {
this.forceCompositionEnd();
};
ContentEditableInput.prototype.forceCompositionEnd = function () {
if (!this.composing) {
return
}
clearTimeout(this.readDOMTimeout);
this.composing = null;
this.updateFromDOM();
this.div.blur();
this.div.focus();
};
ContentEditableInput.prototype.readFromDOMSoon = function () {
var this$1 = this;
if (this.readDOMTimeout != null) {
return
}
this.readDOMTimeout = setTimeout(function () {
this$1.readDOMTimeout = null;
if (this$1.composing) {
if (this$1.composing.done) {
this$1.composing = null;
} else {
return
}
}
this$1.updateFromDOM();
}, 80);
};
ContentEditableInput.prototype.updateFromDOM = function () {
var this$1 = this;
if (this.cm.isReadOnly() || !this.pollContent()) {
runInOp(this.cm, function () {
return regChange(this$1.cm);
});
}
};
ContentEditableInput.prototype.setUneditable = function (node) {
node.contentEditable = "false";
};
ContentEditableInput.prototype.onKeyPress = function (e) {
if (e.charCode == 0 || this.composing) {
return
}
e.preventDefault();
if (!this.cm.isReadOnly()) {
operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0);
}
};
ContentEditableInput.prototype.readOnlyChanged = function (val) {
this.div.contentEditable = String(val != "nocursor");
};
ContentEditableInput.prototype.onContextMenu = function () {};
ContentEditableInput.prototype.resetPosition = function () {};
ContentEditableInput.prototype.needsContentAttribute = true;
function posToDOM(cm, pos) {
var view = findViewForLine(cm, pos.line);
if (!view || view.hidden) {
return null
}
var line = getLine(cm.doc, pos.line);
var info = mapFromLineView(view, line, pos.line);
var order = getOrder(line, cm.doc.direction),
side = "left";
if (order) {
var partPos = getBidiPartAt(order, pos.ch);
side = partPos % 2 ? "right" : "left";
}
var result = nodeAndOffsetInLineMap(info.map, pos.ch, side);
result.offset = result.collapse == "right" ? result.end : result.start;
return result
}
function isInGutter(node) {
for (var scan = node; scan; scan = scan.parentNode) {
if (/CodeMirror-gutter-wrapper/.test(scan.className)) {
return true
}
}
return false
}
function badPos(pos, bad) {
if (bad) {
pos.bad = true;
}
return pos
}
function domTextBetween(cm, from, to, fromLine, toLine) {
var text = "",
closing = false,
lineSep = cm.doc.lineSeparator(),
extraLinebreak = false;
function recognizeMarker(id) {
return function (marker) {
return marker.id == id;
}
}
function close() {
if (closing) {
text += lineSep;
if (extraLinebreak) {
text += lineSep;
}
closing = extraLinebreak = false;
}
}
function addText(str) {
if (str) {
close();
text += str;
}
}
function walk(node) {
if (node.nodeType == 1) {
var cmText = node.getAttribute("cm-text");
if (cmText) {
addText(cmText);
return
}
var markerID = node.getAttribute("cm-marker"),
range$$1;
if (markerID) {
var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID));
if (found.length && (range$$1 = found[0].find(0))) {
addText(getBetween(cm.doc, range$$1.from, range$$1.to).join(lineSep));
}
return
}
if (node.getAttribute("contenteditable") == "false") {
return
}
var isBlock = /^(pre|div|p|li|table|br)$/i.test(node.nodeName);
if (!/^br$/i.test(node.nodeName) && node.textContent.length == 0) {
return
}
if (isBlock) {
close();
}
for (var i = 0; i < node.childNodes.length; i++) {
walk(node.childNodes[i]);
}
if (/^(pre|p)$/i.test(node.nodeName)) {
extraLinebreak = true;
}
if (isBlock) {
closing = true;
}
} else if (node.nodeType == 3) {
addText(node.nodeValue.replace(/\u200b/g, "").replace(/\u00a0/g, " "));
}
}
for (;;) {
walk(from);
if (from == to) {
break
}
from = from.nextSibling;
extraLinebreak = false;
}
return text
}
function domToPos(cm, node, offset) {
var lineNode;
if (node == cm.display.lineDiv) {
lineNode = cm.display.lineDiv.childNodes[offset];
if (!lineNode) {
return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true)
}
node = null;
offset = 0;
} else {
for (lineNode = node;; lineNode = lineNode.parentNode) {
if (!lineNode || lineNode == cm.display.lineDiv) {
return null
}
if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) {
break
}
}
}
for (var i = 0; i < cm.display.view.length; i++) {
var lineView = cm.display.view[i];
if (lineView.node == lineNode) {
return locateNodeInLineView(lineView, node, offset)
}
}
}
function locateNodeInLineView(lineView, node, offset) {
var wrapper = lineView.text.firstChild,
bad = false;
if (!node || !contains(wrapper, node)) {
return badPos(Pos(lineNo(lineView.line), 0), true)
}
if (node == wrapper) {
bad = true;
node = wrapper.childNodes[offset];
offset = 0;
if (!node) {
var line = lineView.rest ? lst(lineView.rest) : lineView.line;
return badPos(Pos(lineNo(line), line.text.length), bad)
}
}
var textNode = node.nodeType == 3 ? node : null,
topNode = node;
if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) {
textNode = node.firstChild;
if (offset) {
offset = textNode.nodeValue.length;
}
}
while (topNode.parentNode != wrapper) {
topNode = topNode.parentNode;
}
var measure = lineView.measure,
maps = measure.maps;
function find(textNode, topNode, offset) {
for (var i = -1; i < (maps ? maps.length : 0); i++) {
var map$$1 = i < 0 ? measure.map : maps[i];
for (var j = 0; j < map$$1.length; j += 3) {
var curNode = map$$1[j + 2];
if (curNode == textNode || curNode == topNode) {
var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]);
var ch = map$$1[j] + offset;
if (offset < 0 || curNode != textNode) {
ch = map$$1[j + (offset ? 1 : 0)];
}
return Pos(line, ch)
}
}
}
}
var found = find(textNode, topNode, offset);
if (found) {
return badPos(found, bad)
}
// FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems
for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) {
found = find(after, after.firstChild, 0);
if (found) {
return badPos(Pos(found.line, found.ch - dist), bad)
} else {
dist += after.textContent.length;
}
}
for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) {
found = find(before, before.firstChild, -1);
if (found) {
return badPos(Pos(found.line, found.ch + dist$1), bad)
} else {
dist$1 += before.textContent.length;
}
}
}
// TEXTAREA INPUT STYLE
var TextareaInput = function (cm) {
this.cm = cm;
// See input.poll and input.reset
this.prevInput = "";
// Flag that indicates whether we expect input to appear real soon
// now (after some event like 'keypress' or 'input') and are
// polling intensively.
this.pollingFast = false;
// Self-resetting timeout for the poller
this.polling = new Delayed();
// Used to work around IE issue with selection being forgotten when focus moves away from textarea
this.hasSelection = false;
this.composing = null;
};
TextareaInput.prototype.init = function (display) {
var this$1 = this;
var input = this,
cm = this.cm;
this.createField(display);
var te = this.textarea;
display.wrapper.insertBefore(this.wrapper, display.wrapper.firstChild);
// Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore)
if (ios) {
te.style.width = "0px";
}
on(te, "input", function () {
if (ie && ie_version >= 9 && this$1.hasSelection) {
this$1.hasSelection = null;
}
input.poll();
});
on(te, "paste", function (e) {
if (signalDOMEvent(cm, e) || handlePaste(e, cm)) {
return
}
cm.state.pasteKataming = true;
input.fastPoll();
});
function prepareCopyCut(e) {
if (signalDOMEvent(cm, e)) {
return
}
if (cm.somethingSelected()) {
setLastCopied({
lineWise: false,
text: cm.getSelections()
});
} else if (!cm.options.lineWiseCopyCut) {
return
} else {
var ranges = copyableRanges(cm);
setLastCopied({
lineWise: true,
text: ranges.text
});
if (e.type == "cut") {
cm.setSelections(ranges.ranges, null, sel_dontScroll);
} else {
input.prevInput = "";
te.value = ranges.text.join("\n");
selectInput(te);
}
}
if (e.type == "cut") {
cm.state.cutKataming = true;
}
}
on(te, "cut", prepareCopyCut);
on(te, "copy", prepareCopyCut);
on(display.scroller, "paste", function (e) {
if (eventInWidget(display, e) || signalDOMEvent(cm, e)) {
return
}
cm.state.pasteKataming = true;
input.focus();
});
// Prevent normal selection in the editor (we handle our own)
on(display.lineSpace, "selectstart", function (e) {
if (!eventInWidget(display, e)) {
e_preventDefault(e);
}
});
on(te, "compositionstart", function () {
var start = cm.getCursor("from");
if (input.composing) {
input.composing.range.clear();
}
input.composing = {
start: start,
range: cm.markText(start, cm.getCursor("to"), {
className: "CodeMirror-composing"
})
};
});
on(te, "compositionend", function () {
if (input.composing) {
input.poll();
input.composing.range.clear();
input.composing = null;
}
});
};
TextareaInput.prototype.createField = function (_display) {
// Wraps and hides input textarea
this.wrapper = hiddenTextarea();
// The semihidden textarea that is focused when the editor is
// focused, and receives input.
this.textarea = this.wrapper.firstChild;
};
TextareaInput.prototype.prepareSelection = function () {
// Redraw the selection and/or cursor
var cm = this.cm,
display = cm.display,
doc = cm.doc;
var result = prepareSelection(cm);
// Move the hidden textarea near the cursor to prevent scrolling artifacts
if (cm.options.moveInputWithCursor) {
var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
var wrapOff = display.wrapper.getBoundingClientRect(),
lineOff = display.lineDiv.getBoundingClientRect();
result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
headPos.top + lineOff.top - wrapOff.top));
result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
headPos.left + lineOff.left - wrapOff.left));
}
return result
};
TextareaInput.prototype.showSelection = function (drawn) {
var cm = this.cm,
display = cm.display;
removeChildrenAndAdd(display.cursorDiv, drawn.cursors);
removeChildrenAndAdd(display.selectionDiv, drawn.selection);
if (drawn.teTop != null) {
this.wrapper.style.top = drawn.teTop + "px";
this.wrapper.style.left = drawn.teLeft + "px";
}
};
// Reset the input to correspond to the selection (or to be empty,
// when not typing and nothing is selected)
TextareaInput.prototype.reset = function (typing) {
if (this.contextMenuPending || this.composing) {
return
}
var cm = this.cm;
if (cm.somethingSelected()) {
this.prevInput = "";
var content = cm.getSelection();
this.textarea.value = content;
if (cm.state.focused) {
selectInput(this.textarea);
}
if (ie && ie_version >= 9) {
this.hasSelection = content;
}
} else if (!typing) {
this.prevInput = this.textarea.value = "";
if (ie && ie_version >= 9) {
this.hasSelection = null;
}
}
};
TextareaInput.prototype.getField = function () {
return this.textarea
};
TextareaInput.prototype.supportsTouch = function () {
return false
};
TextareaInput.prototype.focus = function () {
if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) {
try {
this.textarea.focus();
} catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM
}
};
TextareaInput.prototype.blur = function () {
this.textarea.blur();
};
TextareaInput.prototype.resetPosition = function () {
this.wrapper.style.top = this.wrapper.style.left = 0;
};
TextareaInput.prototype.receivedFocus = function () {
this.slowPoll();
};
// Poll for input changes, using the normal rate of polling. This
// runs as long as the editor is focused.
TextareaInput.prototype.slowPoll = function () {
var this$1 = this;
if (this.pollingFast) {
return
}
this.polling.set(this.cm.options.pollInterval, function () {
this$1.poll();
if (this$1.cm.state.focused) {
this$1.slowPoll();
}
});
};
// When an event has just come in that is likely to add or change
// something in the input textarea, we poll faster, to ensure that
// the change appears on the screen quickly.
TextareaInput.prototype.fastPoll = function () {
var missed = false,
input = this;
input.pollingFast = true;
function p() {
var changed = input.poll();
if (!changed && !missed) {
missed = true;
input.polling.set(60, p);
} else {
input.pollingFast = false;
input.slowPoll();
}
}
input.polling.set(20, p);
};
// Read input from the textarea, and update the document to match.
// When something is selected, it is present in the textarea, and
// selected (unless it is huge, in which case a placeholder is
// used). When nothing is selected, the cursor sits after previously
// seen text (can be empty), which is stored in prevInput (we must
// not reset the textarea when typing, because that breaks IME).
TextareaInput.prototype.poll = function () {
var this$1 = this;
var cm = this.cm,
input = this.textarea,
prevInput = this.prevInput;
// Since this is called a *lot*, try to bail out as cheaply as
// possible when it is clear that nothing happened. hasSelection
// will be the case when there is a lot of text in the textarea,
// in which case reading its value would be expensive.
if (this.contextMenuPending || !cm.state.focused ||
(hasSelection(input) && !prevInput && !this.composing) ||
cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq) {
return false
}
var text = input.value;
// If nothing changed, bail.
if (text == prevInput && !cm.somethingSelected()) {
return false
}
// Work around nonsensical selection resetting in IE9/10, and
// inexplicable appearance of private area unicode characters on
// some key combos in Mac (#2689).
if (ie && ie_version >= 9 && this.hasSelection === text ||
mac && /[\uf700-\uf7ff]/.test(text)) {
cm.display.input.reset();
return false
}
if (cm.doc.sel == cm.display.selForContextMenu) {
var first = text.charCodeAt(0);
if (first == 0x200b && !prevInput) {
prevInput = "\u200b";
}
if (first == 0x21da) {
this.reset();
return this.cm.execCommand("undo")
}
}
// Find the part of the input that is actually new
var same = 0,
l = Math.min(prevInput.length, text.length);
while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) {
++same;
}
runInOp(cm, function () {
applyTextInput(cm, text.slice(same), prevInput.length - same,
null, this$1.composing ? "*compose" : null);
// Don't leave long text in the textarea, since it makes further polling slow
if (text.length > 1000 || text.indexOf("\n") > -1) {
input.value = this$1.prevInput = "";
} else {
this$1.prevInput = text;
}
if (this$1.composing) {
this$1.composing.range.clear();
this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor("to"), {
className: "CodeMirror-composing"
});
}
});
return true
};
TextareaInput.prototype.ensurePolled = function () {
if (this.pollingFast && this.poll()) {
this.pollingFast = false;
}
};
TextareaInput.prototype.onKeyPress = function () {
if (ie && ie_version >= 9) {
this.hasSelection = null;
}
this.fastPoll();
};
TextareaInput.prototype.onContextMenu = function (e) {
var input = this,
cm = input.cm,
display = cm.display,
te = input.textarea;
if (input.contextMenuPending) {
input.contextMenuPending();
}
var pos = posFromMouse(cm, e),
scrollPos = display.scroller.scrollTop;
if (!pos || presto) {
return
} // Opera is difficult.
// Reset the current text selection only if the click is done outside of the selection
// and 'resetSelectionOnContextMenu' option is true.
var reset = cm.options.resetSelectionOnContextMenu;
if (reset && cm.doc.sel.contains(pos) == -1) {
operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll);
}
var oldCSS = te.style.cssText,
oldWrapperCSS = input.wrapper.style.cssText;
var wrapperBox = input.wrapper.offsetParent.getBoundingClientRect();
input.wrapper.style.cssText = "position: static";
te.style.cssText = "position: absolute; width: 30px; height: 30px;\n top: " + (e.clientY - wrapperBox.top - 5) + "px; left: " + (e.clientX - wrapperBox.left - 5) + "px;\n z-index: 1000; background: " + (ie ? "rgba(255, 255, 255, .05)" : "transparent") + ";\n outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
var oldScrollY;
if (webkit) {
oldScrollY = window.scrollY;
} // Work around Chrome issue (#2712)
display.input.focus();
if (webkit) {
window.scrollTo(null, oldScrollY);
}
display.input.reset();
// Adds "Select all" to context menu in FF
if (!cm.somethingSelected()) {
te.value = input.prevInput = " ";
}
input.contextMenuPending = rehide;
display.selForContextMenu = cm.doc.sel;
clearTimeout(display.detectingSelectAll);
// Select-all will be greyed out if there's nothing to select, so
// this adds a zero-width space so that we can later check whether
// it got selected.
function prepareSelectAllHack() {
if (te.selectionStart != null) {
var selected = cm.somethingSelected();
var extval = "\u200b" + (selected ? te.value : "");
te.value = "\u21da"; // Used to catch context-menu undo
te.value = extval;
input.prevInput = selected ? "" : "\u200b";
te.selectionStart = 1;
te.selectionEnd = extval.length;
// Re-set this, in case some other handler touched the
// selection in the meantime.
display.selForContextMenu = cm.doc.sel;
}
}
function rehide() {
if (input.contextMenuPending != rehide) {
return
}
input.contextMenuPending = false;
input.wrapper.style.cssText = oldWrapperCSS;
te.style.cssText = oldCSS;
if (ie && ie_version < 9) {
display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos);
}
// Try to detect the user choosing select-all
if (te.selectionStart != null) {
if (!ie || (ie && ie_version < 9)) {
prepareSelectAllHack();
}
var i = 0,
poll = function () {
if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 &&
te.selectionEnd > 0 && input.prevInput == "\u200b") {
operation(cm, selectAll)(cm);
} else if (i++ < 10) {
display.detectingSelectAll = setTimeout(poll, 500);
} else {
display.selForContextMenu = null;
display.input.reset();
}
};
display.detectingSelectAll = setTimeout(poll, 200);
}
}
if (ie && ie_version >= 9) {
prepareSelectAllHack();
}
if (captureRightClick) {
e_stop(e);
var mouseup = function () {
off(window, "mouseup", mouseup);
setTimeout(rehide, 20);
};
on(window, "mouseup", mouseup);
} else {
setTimeout(rehide, 50);
}
};
TextareaInput.prototype.readOnlyChanged = function (val) {
if (!val) {
this.reset();
}
this.textarea.disabled = val == "nocursor";
};
TextareaInput.prototype.setUneditable = function () {};
TextareaInput.prototype.needsContentAttribute = false;
function fromTextArea(textarea, options) {
options = options ? copyObj(options) : {};
options.value = textarea.value;
if (!options.tabindex && textarea.tabIndex) {
options.tabindex = textarea.tabIndex;
}
if (!options.placeholder && textarea.placeholder) {
options.placeholder = textarea.placeholder;
}
// Set autofocus to true if this textarea is focused, or if it has
// autofocus and no other element is focused.
if (options.autofocus == null) {
var hasFocus = activeElt();
options.autofocus = hasFocus == textarea ||
textarea.getAttribute("autofocus") != null && hasFocus == document.body;
}
function save() {
textarea.value = cm.getValue();
}
var realSubmit;
if (textarea.form) {
on(textarea.form, "submit", save);
// Deplorable hack to make the submit method do the right thing.
if (!options.leaveSubmitMethodAlone) {
var form = textarea.form;
realSubmit = form.submit;
try {
var wrappedSubmit = form.submit = function () {
save();
form.submit = realSubmit;
form.submit();
form.submit = wrappedSubmit;
};
} catch (e) {}
}
}
options.finishInit = function (cm) {
cm.save = save;
cm.getTextArea = function () {
return textarea;
};
cm.toTextArea = function () {
cm.toTextArea = isNaN; // Prevent this from being ran twice
save();
textarea.parentNode.removeChild(cm.getWrapperElement());
textarea.style.display = "";
if (textarea.form) {
off(textarea.form, "submit", save);
if (typeof textarea.form.submit == "function") {
textarea.form.submit = realSubmit;
}
}
};
};
textarea.style.display = "none";
var cm = CodeMirror(function (node) {
return textarea.parentNode.insertBefore(node, textarea.nextSibling);
},
options);
return cm
}
function addLegacyProps(CodeMirror) {
CodeMirror.off = off;
CodeMirror.on = on;
CodeMirror.wheelEventPixels = wheelEventPixels;
CodeMirror.Doc = Doc;
CodeMirror.splitLines = splitLinesAuto;
CodeMirror.countColumn = countColumn;
CodeMirror.findColumn = findColumn;
CodeMirror.isWordChar = isWordCharBasic;
CodeMirror.Pass = Pass;
CodeMirror.signal = signal;
CodeMirror.Line = Line;
CodeMirror.changeEnd = changeEnd;
CodeMirror.scrollbarModel = scrollbarModel;
CodeMirror.Pos = Pos;
CodeMirror.cmpPos = cmp;
CodeMirror.modes = modes;
CodeMirror.mimeModes = mimeModes;
CodeMirror.resolveMode = resolveMode;
CodeMirror.getMode = getMode;
CodeMirror.modeExtensions = modeExtensions;
CodeMirror.extendMode = extendMode;
CodeMirror.copyState = copyState;
CodeMirror.startState = startState;
CodeMirror.innerMode = innerMode;
CodeMirror.commands = commands;
CodeMirror.keyMap = keyMap;
CodeMirror.keyName = keyName;
CodeMirror.isModifierKey = isModifierKey;
CodeMirror.lookupKey = lookupKey;
CodeMirror.normalizeKeyMap = normalizeKeyMap;
CodeMirror.StringStream = StringStream;
CodeMirror.SharedTextMarker = SharedTextMarker;
CodeMirror.TextMarker = TextMarker;
CodeMirror.LineWidget = LineWidget;
CodeMirror.e_preventDefault = e_preventDefault;
CodeMirror.e_stopPropagation = e_stopPropagation;
CodeMirror.e_stop = e_stop;
CodeMirror.addClass = addClass;
CodeMirror.contains = contains;
CodeMirror.rmClass = rmClass;
CodeMirror.keyNames = keyNames;
}
// EDITOR CONSTRUCTOR
defineOptions(CodeMirror);
addEditorMethods(CodeMirror);
// Set up methods on CodeMirror's prototype to redirect to the editor's document.
var dontDelegate = "iter insert remove copy getEditor constructor".split(" ");
for (var prop in Doc.prototype) {
if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) {
CodeMirror.prototype[prop] = (function (method) {
return function () {
return method.apply(this.doc, arguments)
}
})(Doc.prototype[prop]);
}
}
eventMixin(Doc);
CodeMirror.inputStyles = {
"textarea": TextareaInput,
"contenteditable": ContentEditableInput
};
// Extra arguments are stored as the mode's dependencies, which is
// used by (legacy) mechanisms like loadmode.js to automatically
// load a mode. (Preferred mechanism is the require/define calls.)
CodeMirror.defineMode = function (name /*, mode, …*/ ) {
if (!CodeMirror.defaults.mode && name != "null") {
CodeMirror.defaults.mode = name;
}
defineMode.apply(this, arguments);
};
CodeMirror.defineMIME = defineMIME;
// Minimal default mode.
CodeMirror.defineMode("null", function () {
return ({
token: function (stream) {
return stream.skipToEnd();
}
});
});
CodeMirror.defineMIME("text/plain", "null");
// EXTENSIONS
CodeMirror.defineExtension = function (name, func) {
CodeMirror.prototype[name] = func;
};
CodeMirror.defineDocExtension = function (name, func) {
Doc.prototype[name] = func;
};
CodeMirror.fromTextArea = fromTextArea;
addLegacyProps(CodeMirror);
CodeMirror.version = "5.42.2";
return CodeMirror;
})));