rc1: plugins/managesieve/codemirror/lib/codemirror.js comparison

comparison plugins/managesieve/codemirror/lib/codemirror.js @ 0:1e000243b222

vanilla 1.3.3 distro, I hope

author	Charlie Root
date	Thu, 04 Jan 2018 15:50:29 -0500
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children

comparison

equal deleted inserted replaced

--1:000000000000
+:1e000243b222
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+// This is CodeMirror (http://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 ie = ie_upto10 || ie_11up
+var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : ie_11up[1])
+var webkit = /WebKit\//.test(userAgent)
+var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent)
+var chrome = /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 = /AppleWebKit/.test(userAgent) && /Mobile\/\w+/.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
+}
+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.root && activeElement.root.activeElement)
+{ activeElement = activeElement.root.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
+}
+}
+function Delayed() {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};
+var sel_mouse = {origin: "*mouse"};
+var 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) }
+// 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 = elt("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 = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
+null, "position: relative; outline: none")
+// Moved around its parent to cover visible view.
+d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-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) {
+if (!(this instanceof Pos)) { return new Pos(line, ch) }
+this.line = line; this.ch = ch
+}
+// 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 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;
+var 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 - 1
+}
+}
+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) }
+// 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
+}
+// 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") }
+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")
+found = true
+}
+}
+if (!found) { f(from, to, "ltr") }
+}
+function bidiLeft(part) { return part.level % 2 ? part.to : part.from }
+function bidiRight(part) { return part.level % 2 ? part.from : part.to }
+function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0 }
+function lineRight(line) {
+var order = getOrder(line)
+if (!order) { return line.text.length }
+return bidiRight(lst(order))
+}
+function compareBidiLevel(order, a, b) {
+var linedir = order[0].level
+if (a == linedir) { return true }
+if (b == linedir) { return false }
+return a < b
+}
+var bidiOther = null
+function getBidiPartAt(order, pos) {
+var found
+bidiOther = null
+for (var i = 0; i < order.length; ++i) {
+var cur = order[i]
+if (cur.from < pos && cur.to > pos) { return i }
+if ((cur.from == pos || cur.to == pos)) {
+if (found == null) {
+found = i
+} else if (compareBidiLevel(order, cur.level, order[found].level)) {
+if (cur.from != cur.to) { bidiOther = found }
+return i
+} else {
+if (cur.from != cur.to) { bidiOther = i }
+return found
+}
+}
+}
+return found
+}
+function moveInLine(line, pos, dir, byUnit) {
+if (!byUnit) { return pos + dir }
+do { pos += dir }
+while (pos > 0 && isExtendingChar(line.text.charAt(pos)))
+return pos
+}
+// This is needed in order to move 'visually' through bi-directional
+// text -- i.e., pressing left should make the cursor go left, even
+// when in RTL text. The tricky part is the 'jumps', where RTL and
+// LTR text touch each other. This often requires the cursor offset
+// to move more than one unit, in order to visually move one unit.
+function moveVisually(line, start, dir, byUnit) {
+var bidi = getOrder(line)
+if (!bidi) { return moveLogically(line, start, dir, byUnit) }
+var pos = getBidiPartAt(bidi, start), part = bidi[pos]
+var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit)
+for (;;) {
+if (target > part.from && target < part.to) { return target }
+if (target == part.from || target == part.to) {
+if (getBidiPartAt(bidi, target) == pos) { return target }
+part = bidi[pos += dir]
+return (dir > 0) == part.level % 2 ? part.to : part.from
+} else {
+part = bidi[pos += dir]
+if (!part) { return null }
+if ((dir > 0) == part.level % 2)
+{ target = moveInLine(line, part.to, -1, byUnit) }
+else
+{ target = moveInLine(line, part.from, 1, byUnit) }
+}
+}
+}
+function moveLogically(line, start, dir, byUnit) {
+var target = start + dir
+if (byUnit) { while (target > 0 && isExtendingChar(line.text.charAt(target))) { target += dir } }
+return target < 0 || target > line.text.length ? null : target
+}
+// 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 0x6ff
+var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm"
+function charType(code) {
+if (code <= 0xf7) { return lowTypes.charAt(code) }
+else if (0x590 <= code && code <= 0x5f4) { return "R" }
+else if (0x600 <= code && code <= 0x6ed) { 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]/
+// Browsers seem to always treat the boundaries of block elements as being L.
+var outerType = "L"
+function BidiSpan(level, from, to) {
+this.level = level
+this.from = from; this.to = to
+}
+return function(str) {
+if (!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 ? "L" : "R"
+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$7)) }
+}
+}
+if (order[0].level == 1 && (m = str.match(/^\s+/))) {
+order[0].from = m[0].length
+order.unshift(new BidiSpan(0, 0, m[0].length))
+}
+if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
+lst(order).to -= m[0].length
+order.push(new BidiSpan(0, len - m[0].length, len))
+}
+if (order[0].level == 2)
+{ order.unshift(new BidiSpan(1, order[0].to, order[0].to)) }
+if (order[0].level != lst(order).level)
+{ order.push(new BidiSpan(order[0].level, len, len)) }
+return 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) {
+var order = line.order
+if (order == null) { order = line.order = bidiOrdering(line.text) }
+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 = {};
+var 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) {
+this.pos = this.start = 0
+this.string = string
+this.tabSize = tabSize || 8
+this.lastColumnPos = this.lastColumnValue = 0
+this.lineStart = 0
+}
+StringStream.prototype = {
+eol: function() {return this.pos >= this.string.length},
+sol: function() {return this.pos == this.lineStart},
+peek: function() {return this.string.charAt(this.pos) || undefined},
+next: function() {
+if (this.pos < this.string.length)
+{ return this.string.charAt(this.pos++) }
+},
+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}
+},
+eatWhile: function(match) {
+var start = this.pos
+while (this.eat(match)){}
+return this.pos > start
+},
+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
+},
+skipToEnd: function() {this.pos = this.string.length},
+skipTo: function(ch) {
+var found = this.string.indexOf(ch, this.pos)
+if (found > -1) {this.pos = found; return true}
+},
+backUp: function(n) {this.pos -= n},
+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)
+},
+indentation: function() {
+return countColumn(this.string, null, this.tabSize) -
+(this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
+},
+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
+}
+},
+current: function(){return this.string.slice(this.start, this.pos)},
+hideFirstChars: function(n, inner) {
+this.lineStart += n
+try { return inner() }
+finally { this.lineStart -= n }
+}
+}
+// 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, state, 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, state, function (end, style) { return st.push(end, style); },
+lineClasses, forceToEnd)
+// Run overlays, adjust style array.
+var loop = function ( o ) {
+var overlay = cm.state.overlays[o], i = 1, at = 0
+runMode(cm, line.text, overlay.mode, true, 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)
+};
+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 state = getStateBefore(cm, lineNo(line))
+var result = highlightLine(cm, line, line.text.length > cm.options.maxHighlightLength ? copyState(cm.doc.mode, state) : state)
+line.stateAfter = state
+line.styles = result.styles
+if (result.classes) { line.styleClasses = result.classes }
+else if (line.styleClasses) { line.styleClasses = null }
+if (updateFrontier === cm.doc.frontier) { cm.doc.frontier++ }
+}
+return line.styles
+}
+function getStateBefore(cm, n, precise) {
+var doc = cm.doc, display = cm.display
+if (!doc.mode.startState) { return true }
+var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter
+if (!state) { state = startState(doc.mode) }
+else { state = copyState(doc.mode, state) }
+doc.iter(pos, n, function (line) {
+processLine(cm, line.text, state)
+var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo
+line.stateAfter = save ? copyState(doc.mode, state) : null
+++pos
+})
+if (precise) { doc.frontier = pos }
+return state
+}
+// 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, state, startAt) {
+var mode = cm.doc.mode
+var stream = new StringStream(text, cm.options.tabSize)
+stream.start = stream.pos = startAt || 0
+if (text == "") { callBlankLine(mode, state) }
+while (!stream.eol()) {
+readToken(mode, stream, 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.")
+}
+// Utility for getTokenAt and getLineTokens
+function takeToken(cm, pos, precise, asArray) {
+var getObj = function (copy) { return ({
+start: stream.start, end: stream.pos,
+string: stream.current(),
+type: style || null,
+state: copy ? copyState(doc.mode, state) : state
+}); }
+var doc = cm.doc, mode = doc.mode, style
+pos = clipPos(doc, pos)
+var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise)
+var stream = new StringStream(line.text, cm.options.tabSize), tokens
+if (asArray) { tokens = [] }
+while ((asArray || stream.pos < pos.ch) && !stream.eol()) {
+stream.start = stream.pos
+style = readToken(mode, stream, state)
+if (asArray) { tokens.push(getObj(true)) }
+}
+return asArray ? tokens : getObj()
+}
+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, state, 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), style
+var inner = cm.options.addModeClass && [null]
+if (text == "") { extractLineClasses(callBlankLine(mode, state), lineClasses) }
+while (!stream.eol()) {
+if (stream.pos > cm.options.maxHighlightLength) {
+flattenSpans = false
+if (forceToEnd) { processLine(cm, text, state, stream.pos) }
+stream.pos = text.length
+style = null
+} else {
+style = extractLineClasses(readToken(mode, stream, 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)
+if (line.stateAfter && (!precise || search <= doc.frontier)) { return search }
+var indented = countColumn(line.text, null, cm.options.tabSize)
+if (minline == null || minindent > indented) {
+minline = search - 1
+minindent = indented
+}
+}
+return minline
+}
+// LINE DATA STRUCTURE
+// Line objects. These hold state related to a line, including
+// highlighting info (the styles array).
+function Line(text, markedSpans, estimateHeight) {
+this.text = text
+attachMarkedSpans(this, markedSpans)
+this.height = estimateHeight ? estimateHeight(this) : 1
+}
+eventMixin(Line)
+Line.prototype.lineNo = function() { return lineNo(this) }
+// 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 = {};
+var 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 = elt("span", null, null, webkit ? "padding-right: .1px" : null)
+var builder = {pre: elt("pre", [content], "CodeMirror-line"), content: content,
+col: 0, pos: 0, cm: cm,
+trailingSpace: false,
+splitSpaces: (ie || webkit) && 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)))
+{ 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, title, css) {
+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 (title) { token.title = title }
+return builder.content.appendChild(token)
+}
+builder.content.appendChild(content)
+}
+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, title, css) {
+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, title, css) }
+inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css)
+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, title, collapsed
+for (;;) {
+if (nextChange == pos) { // Update current marker set
+spanStyle = spanEndStyle = spanStartStyle = title = css = ""
+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) }
+if (m.title && !title) { title = m.title }
+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 : "", title, css)
+}
+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(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(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)
+}
+}
+// 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(lineView)
+} else if (cls) {
+lineView.text.className = cls
+}
+}
+function updateLineClasses(lineView) {
+updateLineBackground(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"))
+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(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() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft }
+function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop }
+// 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 && lineObj.widgets) { for (var i = 0; i < lineObj.widgets.length; ++i) { if (lineObj.widgets[i].above) {
+var size = widgetHeight(lineObj.widgets[i])
+rect.top += size; rect.bottom += size
+} } }
+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.
+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)
+}
+function getBidi(ch, partPos) {
+var part = order[partPos], right = part.level % 2
+if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
+part = order[--partPos]
+ch = bidiRight(part) - (part.level % 2 ? 0 : 1)
+right = true
+} else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
+part = order[++partPos]
+ch = bidiLeft(part) - part.level % 2
+right = false
+}
+if (right && ch == part.to && ch > part.from) { return get(ch - 1) }
+return get(ch, right)
+}
+var order = getOrder(lineObj), ch = pos.ch
+if (!order) { return get(ch) }
+var partPos = getBidiPartAt(order, ch)
+var val = getBidi(ch, partPos)
+if (bidiOther != null) { val.other = getBidi(ch, bidiOther) }
+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, outside, xRel) {
+var pos = Pos(line, ch)
+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, 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, true, 1) }
+if (x < 0) { x = 0 }
+var lineObj = getLine(doc, lineN)
+for (;;) {
+var found = coordsCharInner(cm, lineObj, lineN, x, y)
+var merged = collapsedSpanAtEnd(lineObj)
+var mergedPos = merged && merged.find(0, true)
+if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
+{ lineN = lineNo(lineObj = mergedPos.to.line) }
+else
+{ return found }
+}
+}
+function coordsCharInner(cm, lineObj, lineNo$$1, x, y) {
+var innerOff = y - heightAtLine(lineObj)
+var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth
+var preparedMeasure = prepareMeasureForLine(cm, lineObj)
+function getX(ch) {
+var sp = cursorCoords(cm, Pos(lineNo$$1, ch), "line", lineObj, preparedMeasure)
+wrongLine = true
+if (innerOff > sp.bottom) { return sp.left - adjust }
+else if (innerOff < sp.top) { return sp.left + adjust }
+else { wrongLine = false }
+return sp.left
+}
+var bidi = getOrder(lineObj), dist = lineObj.text.length
+var from = lineLeft(lineObj), to = lineRight(lineObj)
+var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine
+if (x > toX) { return PosWithInfo(lineNo$$1, to, toOutside, 1) }
+// Do a binary search between these bounds.
+for (;;) {
+if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
+var ch = x < fromX || x - fromX <= toX - x ? from : to
+var outside = ch == from ? fromOutside : toOutside
+var xDiff = x - (ch == from ? fromX : toX)
+// This is a kludge to handle the case where the coordinates
+// are after a line-wrapped line. We should replace it with a
+// more general handling of cursor positions around line
+// breaks. (Issue #4078)
+if (toOutside && !bidi && !/\s/.test(lineObj.text.charAt(ch)) && xDiff > 0 &&
+ch < lineObj.text.length && preparedMeasure.view.measure.heights.length > 1) {
+var charSize = measureCharPrepared(cm, preparedMeasure, ch, "right")
+if (innerOff <= charSize.bottom && innerOff >= charSize.top && Math.abs(x - charSize.right) < xDiff) {
+outside = false
+ch++
+xDiff = x - charSize.right
+}
+}
+while (isExtendingChar(lineObj.text.charAt(ch))) { ++ch }
+var pos = PosWithInfo(lineNo$$1, ch, outside, xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0)
+return pos
+}
+var step = Math.ceil(dist / 2), middle = from + step
+if (bidi) {
+middle = from
+for (var i = 0; i < step; ++i) { middle = moveVisually(lineObj, middle, 1) }
+}
+var middleX = getX(middle)
+if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) { toX += 1000; } dist = step}
+else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step}
+}
+}
+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) {
+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 === false && 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$$1, selFragment) }
+}
+return result
+}
+// Draws a cursor for the given range
+function drawSelectionCursor(cm, head, output) {
+var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine)
+var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"))
+cursor.style.left = pos.left + "px"
+cursor.style.top = pos.top + "px"
+cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"
+if (pos.other) {
+// Secondary cursor, shown when on a 'jump' in bi-directional text
+var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"))
+otherCursor.style.display = ""
+otherCursor.style.left = pos.other.left + "px"
+otherCursor.style.top = pos.other.top + "px"
+otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"
+}
+}
+// Draws the given range as a highlighted selection
+function drawSelectionRange(cm, range$$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
+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)
+}
+iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir) {
+var leftPos = coords(from, "left"), rightPos, left, right
+if (from == to) {
+rightPos = leftPos
+left = right = leftPos.left
+} else {
+rightPos = coords(to - 1, "right")
+if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp }
+left = leftPos.left
+right = rightPos.right
+}
+if (fromArg == null && from == 0) { left = leftSide }
+if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
+add(left, leftPos.top, null, leftPos.bottom)
+left = leftSide
+if (leftPos.bottom < rightPos.top) { add(left, leftPos.bottom, null, rightPos.top) }
+}
+if (toArg == null && to == lineLen) { right = rightSide }
+if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
+{ start = leftPos }
+if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
+{ end = rightPos }
+if (left < leftSide + 1) { left = leftSide }
+add(left, rightPos.top, right - left, rightPos.bottom)
+})
+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)
+}
+// 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
+}
+// 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], height = void 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
+}
+var diff = cur.line.height - height
+if (height < 2) { height = textHeight(display) }
+if (diff > .001 || diff < -.001) {
+updateLineHeight(cur.line, height)
+updateWidgetHeight(cur.line)
+if (cur.rest) { for (var j = 0; j < cur.rest.length; j++)
+{ updateWidgetHeight(cur.rest[j]) } }
+}
+}
+}
+// 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)
+{ line.widgets[i].height = line.widgets[i].node.parentNode.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)}
+}
+// Sync the scrollable area and scrollbars, ensure the viewport
+// covers the visible area.
+function setScrollTop(cm, val) {
+if (Math.abs(cm.doc.scrollTop - val) < 2) { return }
+cm.doc.scrollTop = val
+if (!gecko) { updateDisplaySimple(cm, {top: val}) }
+if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val }
+cm.display.scrollbars.setScrollTop(val)
+if (gecko) { updateDisplaySimple(cm) }
+startWorker(cm, 100)
+}
+// Sync scroller and scrollbar, ensure the gutter elements are
+// aligned.
+function setScrollLeft(cm, val, isScroller) {
+if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) { return }
+val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth)
+cm.doc.scrollLeft = val
+alignHorizontally(cm)
+if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val }
+cm.display.scrollbars.setScrollLeft(val)
+}
+// 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;
+var 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)
+{ setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))) }
+setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)))
+// 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
+}
+}
+}
+// 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
+}
+}
+function NativeScrollbars(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")
+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 = copyObj({
+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 =
+(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}
+},
+setScrollLeft: function(pos) {
+if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos }
+if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz) }
+},
+setScrollTop: function(pos) {
+if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos }
+if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert) }
+},
+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
+},
+enableZeroWidthBar: function(bar, delay) {
+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
+// left 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$$1 = document.elementFromPoint(box.left + 1, box.bottom - 1)
+if (elt$$1 != bar) { bar.style.pointerEvents = "none" }
+else { delay.set(1000, maybeDisable) }
+}
+delay.set(1000, maybeDisable)
+},
+clear: function() {
+var parent = this.horiz.parentNode
+parent.removeChild(this.horiz)
+parent.removeChild(this.vert)
+}
+}, NativeScrollbars.prototype)
+function NullScrollbars() {}
+NullScrollbars.prototype = copyObj({
+update: function() { return {bottom: 0, right: 0} },
+setScrollLeft: function() {},
+setScrollTop: function() {},
+clear: function() {}
+}, NullScrollbars.prototype)
+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 { setScrollTop(cm, pos) }
+}, cm)
+if (cm.display.scrollbars.addClass)
+{ addClass(cm.display.wrapper, cm.display.scrollbars.addClass) }
+}
+// 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, coords) {
+if (signalDOMEvent(cm, "scrollCursorIntoView")) { return }
+var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null
+if (coords.top + box.top < 0) { doScroll = true }
+else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) { doScroll = false }
+if (doScroll != null && !phantom) {
+var scrollNode = elt("div", "\u200b", null, ("position: absolute;\n                         top: " + (coords.top - display.viewOffset - paddingTop(cm.display)) + "px;\n                         height: " + (coords.bottom - coords.top + scrollGap(cm) + display.barHeight) + "px;\n                         left: " + (coords.left) + "px; width: 2px;"))
+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 coords
+for (var limit = 0; limit < 5; limit++) {
+var changed = false
+coords = cursorCoords(cm, pos)
+var endCoords = !end || end == pos ? coords : cursorCoords(cm, end)
+var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),
+Math.min(coords.top, endCoords.top) - margin,
+Math.max(coords.left, endCoords.left),
+Math.max(coords.bottom, endCoords.bottom) + margin)
+var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft
+if (scrollPos.scrollTop != null) {
+setScrollTop(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 coords
+}
+// Scroll a given set of coordinates into view (immediately).
+function scrollIntoView(cm, x1, y1, x2, y2) {
+var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2)
+if (scrollPos.scrollTop != null) { setScrollTop(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, x1, y1, x2, y2) {
+var display = cm.display, snapMargin = textHeight(cm.display)
+if (y1 < 0) { y1 = 0 }
+var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop
+var screen = displayHeight(cm), result = {}
+if (y2 - y1 > screen) { y2 = y1 + screen }
+var docBottom = cm.doc.height + paddingVert(display)
+var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin
+if (y1 < screentop) {
+result.scrollTop = atTop ? 0 : y1
+} else if (y2 > screentop + screen) {
+var newTop = Math.min(y1, (atBottom ? docBottom : y2) - 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 = x2 - x1 > screenw
+if (tooWide) { x2 = x1 + screenw }
+if (x1 < 10)
+{ result.scrollLeft = 0 }
+else if (x1 < screenleft)
+{ result.scrollLeft = Math.max(0, x1 - (tooWide ? 0 : 10)) }
+else if (x2 > screenw + screenleft - 3)
+{ result.scrollLeft = x2 + (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 addToScrollPos(cm, left, top) {
+if (left != null || top != null) { resolveScrollToPos(cm) }
+if (left != null)
+{ cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left }
+if (top != null)
+{ 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(), from = cur, to = cur
+if (!cm.options.lineWrapping) {
+from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur
+to = Pos(cur.line, cur.ch + 1)
+}
+cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true}
+}
+// 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)
+var sPos = calculateScrollPos(cm, Math.min(from.left, to.left),
+Math.min(from.top, to.top) - range$$1.margin,
+Math.max(from.right, to.right),
+Math.max(from.bottom, to.bottom) + range$$1.margin)
+cm.scrollTo(sPos.scrollLeft, sPos.scrollTop)
+}
+}
+// 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: null,       // 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
+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(op.focus) }
+}
+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() && (!document.hasFocus || document.hasFocus())
+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 && (display.scroller.scrollTop != op.scrollTop || op.forceScroll)) {
+doc.scrollTop = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop))
+display.scrollbars.setScrollTop(doc.scrollTop)
+display.scroller.scrollTop = doc.scrollTop
+}
+if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft || op.forceScroll)) {
+doc.scrollLeft = Math.max(0, Math.min(display.scroller.scrollWidth - display.scroller.clientWidth, op.scrollLeft))
+display.scrollbars.setScrollLeft(doc.scrollLeft)
+display.scroller.scrollLeft = doc.scrollLeft
+alignHorizontally(cm)
+}
+// If we need to scroll a specific position into view, do so.
+if (op.scrollToPos) {
+var coords = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
+clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin)
+if (op.scrollToPos.isCursor && cm.state.focused) { maybeScrollWindow(cm, coords) }
+}
+// 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.mode.startState && cm.doc.frontier < cm.display.viewTo)
+{ cm.state.highlight.set(time, bind(highlightWorker, cm)) }
+}
+function highlightWorker(cm) {
+var doc = cm.doc
+if (doc.frontier < doc.first) { doc.frontier = doc.first }
+if (doc.frontier >= cm.display.viewTo) { return }
+var end = +new Date + cm.options.workTime
+var state = copyState(doc.mode, getStateBefore(cm, doc.frontier))
+var changedLines = []
+doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) {
+if (doc.frontier >= cm.display.viewFrom) { // Visible
+var oldStyles = line.styles, tooLong = line.text.length > cm.options.maxHighlightLength
+var highlighted = highlightLine(cm, line, tooLong ? copyState(doc.mode, state) : state, true)
+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(doc.frontier) }
+line.stateAfter = tooLong ? state : copyState(doc.mode, state)
+} else {
+if (line.text.length <= cm.options.maxHighlightLength)
+{ processLine(cm, line.text, state) }
+line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null
+}
+++doc.frontier
+if (+new Date > end) {
+startWorker(cm, cm.options.workDelay)
+return true
+}
+})
+if (changedLines.length) { runInOp(cm, function () {
+for (var i = 0; i < changedLines.length; i++)
+{ regLineChange(cm, changedLines[i], "text") }
+}) }
+}
+// DISPLAY DRAWING
+function DisplayUpdate(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
+}
+}
+// 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 focused = activeElt()
+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.
+if (focused && activeElt() != focused && focused.offsetHeight) { focused.focus() }
+// 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.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)
+}
+}
+// 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).
+function Selection(ranges, primIndex) {
+this.ranges = ranges
+this.primIndex = primIndex
+}
+Selection.prototype = {
+primary: function() { return this.ranges[this.primIndex] },
+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 (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) { return false }
+}
+return true
+},
+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)
+},
+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
+},
+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
+}
+}
+function Range(anchor, head) {
+this.anchor = anchor; this.head = head
+}
+Range.prototype = {
+from: function() { return minPos(this.anchor, this.head) },
+to: function() { return maxPos(this.anchor, this.head) },
+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(ranges, primIndex) {
+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]
+if (cmp(prev.to(), cur.from()) >= 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(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.frontier = 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)
+if (!cm.options.lineWrapping) { findMaxLine(cm) }
+cm.options.mode = doc.modeOption
+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) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) ||
+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(doc, range, head, other) {
+if (doc.cm && doc.cm.display.shift || doc.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) {
+setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 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 = []
+for (var i = 0; i < doc.sel.ranges.length; i++)
+{ out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null) }
+var newSel = normalizeSelection(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(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(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 = 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), sel_dontScroll)
+}
+// 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(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) { 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}) }
+} 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) {
+if (doc.cm && doc.cm.state.suppressEdits && !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 { 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 }
+}
+// Adjust frontier, schedule worker
+doc.frontier = Math.min(doc.frontier, 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) {
+if (!to) { to = from }
+if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp }
+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.
+function LineWidget(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
+}
+eventMixin(LineWidget)
+function adjustScrollWhenAboveVisible(cm, line, diff) {
+if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
+{ addToScrollPos(cm, null, diff) }
+}
+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")
+}) }
+}
+LineWidget.prototype.changed = function() {
+var oldH = this.height, cm = this.doc.cm, line = this.line
+this.height = null
+var diff = widgetHeight(this) - oldH
+if (!diff) { return }
+updateLineHeight(line, line.height + diff)
+if (cm) { runInOp(cm, function () {
+cm.curOp.forceUpdate = true
+adjustScrollWhenAboveVisible(cm, line, 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) { addToScrollPos(cm, null, widget.height) }
+cm.curOp.forceUpdate = true
+}
+return true
+})
+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
+function TextMarker(doc, type) {
+this.lines = []
+this.type = type
+this.doc = doc
+this.id = ++nextMarkerId
+}
+eventMixin(TextMarker)
+// 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) }
+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 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) }
+}
+})
+}
+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)
+}
+}
+// 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 = elt("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.title || marker.startStyle || marker.endStyle || marker.css)
+{ 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.
+function SharedTextMarker(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 }
+}
+eventMixin(SharedTextMarker)
+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)
+}
+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) {
+if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep) }
+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.frontier = 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.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)
+setSelection(this, simpleSelection(top))
+}),
+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(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(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;
+var i = this.first
+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
+})
+}
+++i
+})
+}),
+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)
+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)
+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$1) { 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" }
+})
+// 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.body.getElementsByClassName) { return }
+var byClass = document.body.getElementsByClassName("CodeMirror")
+for (var i = 0; i < byClass.length; i++) {
+var cm = byClass[i].CodeMirror
+if (cm) { f(cm) }
+}
+}
+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
+if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth)
+{ return }
+// Might be a text scaling operation, clear size caches.
+d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null
+d.scrollbarsClipped = false
+cm.setSize()
+}
+var keyNames = {
+3: "Enter", 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",
+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("Inconsistent 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"
+}
+// 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 base = keyNames[event.keyCode], name = base
+if (name == null || event.altGraphKey) { return false }
+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
+}
+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)
+})
+}
+// 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.charCoords(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.charCoords(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.charCoords(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) }
+var order = getOrder(visual)
+var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual)
+return Pos(lineN, ch)
+}
+function lineEnd(cm, lineN) {
+var merged, line = getLine(cm.doc, lineN)
+while (merged = collapsedSpanAtEnd(line)) {
+line = merged.find(1, true).line
+lineN = null
+}
+var order = getOrder(line)
+var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line)
+return Pos(lineN == null ? lineNo(line) : lineN, ch)
+}
+function lineStartSmart(cm, pos) {
+var start = lineStart(cm, pos.line)
+var line = getLine(cm.doc, start.line)
+var order = getOrder(line)
+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)
+}
+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)
+}
+var stopSeq = new Delayed
+function dispatchKey(cm, name, e, handle) {
+var seq = cm.state.keySeq
+if (seq) {
+if (isModifierKey(name)) { return "handled" }
+stopSeq.set(50, function () {
+if (cm.state.keySeq == seq) {
+cm.state.keySeq = null
+cm.display.input.reset()
+}
+})
+name = seq + " " + name
+}
+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)
+}
+if (seq && !result && /\'$/.test(name)) {
+e_preventDefault(e)
+return true
+}
+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)
+}
+// 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 start = posFromMouse(cm, e)
+window.focus()
+switch (e_button(e)) {
+case 1:
+// #3261: make sure, that we're not starting a second selection
+if (cm.state.selectingText)
+{ cm.state.selectingText(e) }
+else if (start)
+{ leftButtonDown(cm, e, start) }
+else if (e_target(e) == display.scroller)
+{ e_preventDefault(e) }
+break
+case 2:
+if (webkit) { cm.state.lastMiddleDown = +new Date }
+if (start) { extendSelection(cm.doc, start) }
+setTimeout(function () { return display.input.focus(); }, 20)
+e_preventDefault(e)
+break
+case 3:
+if (captureRightClick) { onContextMenu(cm, e) }
+else { delayBlurEvent(cm) }
+break
+}
+}
+var lastClick;
+var lastDoubleClick
+function leftButtonDown(cm, e, start) {
+if (ie) { setTimeout(bind(ensureFocus, cm), 0) }
+else { cm.curOp.focus = activeElt() }
+var now = +new Date, type
+if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) {
+type = "triple"
+} else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {
+type = "double"
+lastDoubleClick = {time: now, pos: start}
+} else {
+type = "single"
+lastClick = {time: now, pos: start}
+}
+var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained
+if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&
+type == "single" && (contained = sel.contains(start)) > -1 &&
+(cmp((contained = sel.ranges[contained]).from(), start) < 0 || start.xRel > 0) &&
+(cmp(contained.to(), start) > 0 || start.xRel < 0))
+{ leftButtonStartDrag(cm, e, start, modifier) }
+else
+{ leftButtonSelect(cm, e, start, type, modifier) }
+}
+// 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, e, start, modifier) {
+var display = cm.display, startTime = +new Date
+var dragEnd = operation(cm, function (e2) {
+if (webkit) { display.scroller.draggable = false }
+cm.state.draggingText = false
+off(document, "mouseup", dragEnd)
+off(display.scroller, "drop", dragEnd)
+if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
+e_preventDefault(e2)
+if (!modifier && +new Date - 200 < startTime)
+{ extendSelection(cm.doc, start) }
+// Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
+if (webkit || ie && ie_version == 9)
+{ setTimeout(function () {document.body.focus(); display.input.focus()}, 20) }
+else
+{ display.input.focus() }
+}
+})
+// Let the drag handler handle this.
+if (webkit) { display.scroller.draggable = true }
+cm.state.draggingText = dragEnd
+dragEnd.copy = mac ? e.altKey : e.ctrlKey
+// IE's approach to draggable
+if (display.scroller.dragDrop) { display.scroller.dragDrop() }
+on(document, "mouseup", dragEnd)
+on(display.scroller, "drop", dragEnd)
+}
+// Normal selection, as opposed to text dragging.
+function leftButtonSelect(cm, e, start, type, addNew) {
+var display = cm.display, doc = cm.doc
+e_preventDefault(e)
+var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges
+if (addNew && !e.shiftKey) {
+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 (chromeOS ? e.shiftKey && e.metaKey : e.altKey) {
+type = "rect"
+if (!addNew) { ourRange = new Range(start, start) }
+start = posFromMouse(cm, e, true, true)
+ourIndex = -1
+} else if (type == "double") {
+var word = cm.findWordAt(start)
+if (cm.display.shift || doc.extend)
+{ ourRange = extendRange(doc, ourRange, word.anchor, word.head) }
+else
+{ ourRange = word }
+} else if (type == "triple") {
+var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0)))
+if (cm.display.shift || doc.extend)
+{ ourRange = extendRange(doc, ourRange, line.anchor, line.head) }
+else
+{ ourRange = line }
+} else {
+ourRange = extendRange(doc, ourRange, start)
+}
+if (!addNew) {
+ourIndex = 0
+setSelection(doc, new Selection([ourRange], 0), sel_mouse)
+startSel = doc.sel
+} else if (ourIndex == -1) {
+ourIndex = ranges.length
+setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex),
+{scroll: false, origin: "*mouse"})
+} else if (ranges.length > 1 && ranges[ourIndex].empty() && type == "single" && !e.shiftKey) {
+setSelection(doc, normalizeSelection(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 (type == "rect") {
+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(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
+{origin: "*mouse", scroll: false})
+cm.scrollIntoView(pos)
+} else {
+var oldRange = ourRange
+var anchor = oldRange.anchor, head = pos
+if (type != "single") {
+var range$$1
+if (type == "double")
+{ range$$1 = cm.findWordAt(pos) }
+else
+{ range$$1 = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0))) }
+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] = new Range(clipPos(doc, anchor), head)
+setSelection(doc, normalizeSelection(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, type == "rect")
+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(document, "mousemove", move)
+off(document, "mouseup", up)
+doc.history.lastSelOrigin = null
+}
+var move = operation(cm, function (e) {
+if (!e_button(e)) { done(e) }
+else { extend(e) }
+})
+var up = operation(cm, done)
+cm.state.selectingText = up
+on(document, "mousemove", move)
+on(document, "mouseup", up)
+}
+// 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
+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 }
+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\u00ad\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("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("readOnly", false, function (cm, val) {
+if (val == "nocursor") {
+onBlur(cm)
+cm.display.input.blur()
+cm.display.disabled = true
+} else {
+cm.display.disabled = false
+}
+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)
+}
+function guttersChanged(cm) {
+updateGutters(cm)
+regChange(cm)
+setTimeout(function () { return alignHorizontally(cm); }, 20)
+}
+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$1(place, options) {
+var this$1 = this;
+if (!(this instanceof CodeMirror$1)) { return new CodeMirror$1(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) }
+this.doc = doc
+var input = new CodeMirror$1.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" }
+if (options.autofocus && !mobile) { display.input.focus() }
+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
+pasteIncoming: false, cutIncoming: 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
+}
+// 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$1.defaults = defaults
+// Functions to run when options are changed.
+CodeMirror$1.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.
+if (!captureRightClick) { 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)) {
+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) {
+setScrollTop(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$1.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 = getStateBefore(cm, n) }
+}
+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.pasteIncoming || origin == "paste"
+var textLines = splitLinesAuto(inserted), multiPaste = null
+// When pasing 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) {
+multiPaste = map(textLines, function (l) { return [l]; })
+}
+}
+var 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$$1.empty()) {
+if (deleted && deleted > 0) // Handle deletion
+{ from = Pos(from.line, from.ch - deleted) }
+else if (cm.state.overwrite && !paste) // Handle overwrite
+{ to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)) }
+else if (lastCopied && lastCopied.lineWise && lastCopied.text.join("\n") == inserted)
+{ from = to = Pos(from.line, 0) }
+}
+updateInput = cm.curOp.updateInput
+var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines,
+origin: origin || (paste ? "paste" : cm.state.cutIncoming ? "cut" : "+input")}
+makeChange(cm.doc, changeEvent)
+signalLater(cm, "inputRead", cm, changeEvent)
+}
+if (inserted && !paste)
+{ triggerElectric(cm, inserted) }
+ensureCursorVisible(cm)
+cm.curOp.updateInput = updateInput
+cm.curOp.typing = true
+cm.state.pasteIncoming = cm.state.cutIncoming = false
+}
+function handlePaste(e, cm) {
+var pasted = e.clipboardData && e.clipboardData.getData("Text")
+if (pasted) {
+e.preventDefault()
+if (!cm.isReadOnly() && !cm.options.disableInput)
+{ runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, "paste"); }) }
+return true
+}
+}
+function triggerElectric(cm, inserted) {
+// When an 'electric' character is inserted, immediately trigger a reindent
+if (!cm.options.electricChars || !cm.options.smartIndent) { return }
+var sel = cm.doc.sel
+for (var i = sel.ranges.length - 1; i >= 0; i--) {
+var range$$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.
+var addEditorMethods = function(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) }
+},
+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 getStateBefore(this, line + 1, precise)
+},
+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).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, top, left + node.offsetWidth, top + node.offsetHeight) }
+},
+triggerOnKeyDown: methodOp(onKeyDown),
+triggerOnKeyPress: methodOp(onKeyPress),
+triggerOnKeyUp: onKeyUp,
+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())
+{ addToScrollPos(this$1, null, 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.xRel < 0 || 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) {
+if (x != null || y != null) { resolveScrollToPos(this) }
+if (x != null) { this.curOp.scrollLeft = x }
+if (y != null) { this.curOp.scrollTop = 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) {
+resolveScrollToPos(this)
+this.curOp.scrollToPos = range$$1
+} else {
+var sPos = calculateScrollPos(this, Math.min(range$$1.from.left, range$$1.to.left),
+Math.min(range$$1.from.top, range$$1.to.top) - range$$1.margin,
+Math.max(range$$1.from.right, range$$1.to.right),
+Math.max(range$$1.from.bottom, range$$1.to.bottom) + range$$1.margin)
+this.scrollTo(sPos.scrollLeft, sPos.scrollTop)
+}
+}),
+setSize: methodOp(function(width, height) {
+var this$1 = this;
+var interpret = function (val) { return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; }
+if (width != null) { this.display.wrapper.style.width = interpret(width) }
+if (height != null) { this.display.wrapper.style.height = interpret(height) }
+if (this.options.lineWrapping) { clearLineMeasurementCache(this) }
+var lineNo$$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)},
+refresh: methodOp(function() {
+var oldHeight = this.display.cachedTextHeight
+regChange(this)
+this.curOp.forceUpdate = true
+clearCaches(this)
+this.scrollTo(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()
+this.scrollTo(doc.scrollLeft, doc.scrollTop)
+this.curOp.forceScroll = true
+signalLater(this, "swapDoc", this, old)
+return old
+}),
+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 line = pos.line, ch = pos.ch, origDir = dir
+var lineObj = getLine(doc, line)
+function findNextLine() {
+var l = line + dir
+if (l < doc.first || l >= doc.first + doc.size) { return false }
+line = l
+return lineObj = getLine(doc, l)
+}
+function moveOnce(boundToLine) {
+var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true)
+if (next == null) {
+if (!boundToLine && findNextLine()) {
+if (visually) { ch = (dir < 0 ? lineRight : lineLeft)(lineObj) }
+else { ch = dir < 0 ? lineObj.text.length : 0 }
+} else { return false }
+} else { ch = 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(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()}
+break
+}
+if (type) { sawType = type }
+if (dir > 0 && !moveOnce(!first)) { break }
+}
+}
+var result = skipAtomic(doc, Pos(line, ch), pos, origDir, true)
+if (!cmp(pos, 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
+function ContentEditableInput(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 = copyObj({
+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 () {
+if (!input.pollContent()) { regChange(cm) }
+}), 20) }
+})
+on(div, "compositionstart", function (e) {
+this$1.composing = {data: e.data}
+})
+on(div, "compositionupdate", function (e) {
+if (!this$1.composing) { this$1.composing = {data: e.data} }
+})
+on(div, "compositionend", function (e) {
+if (this$1.composing) {
+if (e.data != this$1.composing.data) { this$1.readFromDOMSoon() }
+this$1.composing = null
+}
+})
+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)
+},
+prepareSelection: function() {
+var result = prepareSelection(this.cm, false)
+result.focus = this.cm.state.focused
+return result
+},
+showSelection: function(info, takeFocus) {
+if (!info || !this.cm.display.view.length) { return }
+if (info.focus || takeFocus) { this.showPrimarySelection() }
+this.showMultipleSelections(info)
+},
+showPrimarySelection: function() {
+var sel = window.getSelection(), prim = this.cm.doc.sel.primary()
+var curAnchor = domToPos(this.cm, sel.anchorNode, sel.anchorOffset)
+var curFocus = domToPos(this.cm, sel.focusNode, sel.focusOffset)
+if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad &&
+cmp(minPos(curAnchor, curFocus), prim.from()) == 0 &&
+cmp(maxPos(curAnchor, curFocus), prim.to()) == 0)
+{ return }
+var start = posToDOM(this.cm, prim.from())
+var end = posToDOM(this.cm, prim.to())
+if (!start && !end) { return }
+var view = this.cm.display.view
+var old = sel.rangeCount && sel.getRangeAt(0)
+if (!start) {
+start = {node: view[0].measure.map[2], offset: 0}
+} else if (!end) { // FIXME dangerously hacky
+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]}
+}
+var 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 && this.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()
+},
+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)
+},
+showMultipleSelections: function(info) {
+removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors)
+removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection)
+},
+rememberSelection: function() {
+var sel = window.getSelection()
+this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset
+this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset
+},
+selectionInEditor: function() {
+var sel = window.getSelection()
+if (!sel.rangeCount) { return false }
+var node = sel.getRangeAt(0).commonAncestorContainer
+return contains(this.div, node)
+},
+focus: function() {
+if (this.cm.options.readOnly != "nocursor") {
+if (!this.selectionInEditor())
+{ this.showSelection(this.prepareSelection(), true) }
+this.div.focus()
+}
+},
+blur: function() { this.div.blur() },
+getField: function() { return this.div },
+supportsTouch: function() { return true },
+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)
+},
+selectionChanged: function() {
+var sel = window.getSelection()
+return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset ||
+sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset
+},
+pollSelection: function() {
+if (!this.composing && this.readDOMTimeout == null && !this.gracePeriod && this.selectionChanged()) {
+var sel = window.getSelection(), cm = this.cm
+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 }
+}) }
+}
+},
+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 }
+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
+}
+},
+ensurePolled: function() {
+this.forceCompositionEnd()
+},
+reset: function() {
+this.forceCompositionEnd()
+},
+forceCompositionEnd: function() {
+if (!this.composing) { return }
+this.composing = null
+if (!this.pollContent()) { regChange(this.cm) }
+this.div.blur()
+this.div.focus()
+},
+readFromDOMSoon: function() {
+var this$1 = this;
+if (this.readDOMTimeout != null) { return }
+this.readDOMTimeout = setTimeout(function () {
+this$1.readDOMTimeout = null
+if (this$1.composing) { return }
+if (this$1.cm.isReadOnly() || !this$1.pollContent())
+{ runInOp(this$1.cm, function () { return regChange(this$1.cm); }) }
+}, 80)
+},
+setUneditable: function(node) {
+node.contentEditable = "false"
+},
+onKeyPress: function(e) {
+e.preventDefault()
+if (!this.cm.isReadOnly())
+{ operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0) }
+},
+readOnlyChanged: function(val) {
+this.div.contentEditable = String(val != "nocursor")
+},
+onContextMenu: nothing,
+resetPosition: nothing,
+needsContentAttribute: true
+}, ContentEditableInput.prototype)
+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), 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 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()
+function recognizeMarker(id) { return function (marker) { return marker.id == id; } }
+function walk(node) {
+if (node.nodeType == 1) {
+var cmText = node.getAttribute("cm-text")
+if (cmText != null) {
+if (cmText == "") { text += node.textContent.replace(/\u200b/g, "") }
+else { text += 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()))
+{ text += getBetween(cm.doc, range$$1.from, range$$1.to).join(lineSep) }
+return
+}
+if (node.getAttribute("contenteditable") == "false") { return }
+for (var i = 0; i < node.childNodes.length; i++)
+{ walk(node.childNodes[i]) }
+if (/^(pre|div|p)$/i.test(node.nodeName))
+{ closing = true }
+} else if (node.nodeType == 3) {
+var val = node.nodeValue
+if (!val) { return }
+if (closing) {
+text += lineSep
+closing = false
+}
+text += val
+}
+}
+for (;;) {
+walk(from)
+if (from == to) { break }
+from = from.nextSibling
+}
+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
+function TextareaInput(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()
+// Tracks when input.reset has punted to just putting a short
+// string into the textarea instead of the full selection.
+this.inaccurateSelection = false
+// Used to work around IE issue with selection being forgotten when focus moves away from textarea
+this.hasSelection = false
+this.composing = null
+}
+TextareaInput.prototype = copyObj({
+init: function(display) {
+var this$1 = this;
+var input = this, cm = this.cm
+// Wraps and hides input textarea
+var div = this.wrapper = hiddenTextarea()
+// The semihidden textarea that is focused when the editor is
+// focused, and receives input.
+var te = this.textarea = div.firstChild
+display.wrapper.insertBefore(div, 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.pasteIncoming = true
+input.fastPoll()
+})
+function prepareCopyCut(e) {
+if (signalDOMEvent(cm, e)) { return }
+if (cm.somethingSelected()) {
+setLastCopied({lineWise: false, text: cm.getSelections()})
+if (input.inaccurateSelection) {
+input.prevInput = ""
+input.inaccurateSelection = false
+te.value = lastCopied.text.join("\n")
+selectInput(te)
+}
+} 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.cutIncoming = 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.pasteIncoming = 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
+}
+})
+},
+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
+},
+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)
+reset: function(typing) {
+if (this.contextMenuPending) { return }
+var minimal, selected, cm = this.cm, doc = cm.doc
+if (cm.somethingSelected()) {
+this.prevInput = ""
+var range$$1 = doc.sel.primary()
+minimal = hasCopyEvent &&
+(range$$1.to().line - range$$1.from().line > 100 || (selected = cm.getSelection()).length > 1000)
+var content = minimal ? "-" : selected || 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 }
+}
+this.inaccurateSelection = minimal
+},
+getField: function() { return this.textarea },
+supportsTouch: function() { return false },
+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
+}
+},
+blur: function() { this.textarea.blur() },
+resetPosition: function() {
+this.wrapper.style.top = this.wrapper.style.left = 0
+},
+receivedFocus: function() { this.slowPoll() },
+// Poll for input changes, using the normal rate of polling. This
+// runs as long as the editor is focused.
+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.
+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).
+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
+},
+ensurePolled: function() {
+if (this.pollingFast && this.poll()) { this.pollingFast = false }
+},
+onKeyPress: function() {
+if (ie && ie_version >= 9) { this.hasSelection = null }
+this.fastPoll()
+},
+onContextMenu: function(e) {
+var input = this, cm = input.cm, display = cm.display, te = input.textarea
+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
+input.wrapper.style.cssText = "position: absolute"
+var wrapperBox = input.wrapper.getBoundingClientRect()
+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 = true
+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() {
+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.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)
+}
+},
+readOnlyChanged: function(val) {
+if (!val) { this.reset() }
+},
+setUneditable: nothing,
+needsContentAttribute: false
+}, TextareaInput.prototype)
+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$1(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$1)
+addEditorMethods(CodeMirror$1)
+// 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$1.prototype[prop] = (function(method) {
+return function() {return method.apply(this.doc, arguments)}
+})(Doc.prototype[prop]) } }
+eventMixin(Doc)
+// INPUT HANDLING
+CodeMirror$1.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput}
+// MODE DEFINITION AND QUERYING
+// 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$1.defineMode = function(name/*, mode, …*/) {
+if (!CodeMirror$1.defaults.mode && name != "null") { CodeMirror$1.defaults.mode = name }
+defineMode.apply(this, arguments)
+}
+CodeMirror$1.defineMIME = defineMIME
+// Minimal default mode.
+CodeMirror$1.defineMode("null", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); })
+CodeMirror$1.defineMIME("text/plain", "null")
+// EXTENSIONS
+CodeMirror$1.defineExtension = function (name, func) {
+CodeMirror$1.prototype[name] = func
+}
+CodeMirror$1.defineDocExtension = function (name, func) {
+Doc.prototype[name] = func
+}
+CodeMirror$1.fromTextArea = fromTextArea
+addLegacyProps(CodeMirror$1)
+CodeMirror$1.version = "5.21.0"
+return CodeMirror$1;
+})));