1 line
160 KiB
JavaScript
1 line
160 KiB
JavaScript
"use strict";codemirror30 = "// All functions that need access to the editor's state live inside\n// the CodeMirror function. Below that, at the bottom of the file,\n// some utilities are defined.\n\n// CodeMirror is the only global var we claim\nwindow.CodeMirror = (function() {\n \"use strict\";\n\n // BROWSER SNIFFING\n\n // Crude, but necessary to handle a number of hard-to-feature-detect\n // bugs and behavior differences.\n var gecko = /gecko\\/\\d{7}/i.test(navigator.userAgent);\n var ie = /MSIE \\d/.test(navigator.userAgent);\n var ie_lt8 = /MSIE [1-7]\\b/.test(navigator.userAgent);\n var ie_lt9 = /MSIE [1-8]\\b/.test(navigator.userAgent);\n var webkit = /WebKit\\//.test(navigator.userAgent);\n var chrome = /Chrome\\//.test(navigator.userAgent);\n var opera = /Opera\\//.test(navigator.userAgent);\n var safari = /Apple Computer/.test(navigator.vendor);\n var khtml = /KHTML\\//.test(navigator.userAgent);\n var mac_geLion = /Mac OS X 10\\D([7-9]|\\d\\d)\\D/.test(navigator.userAgent);\n\n var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\\/\\w+/.test(navigator.userAgent);\n var mac = ios || /Mac/.test(navigator.platform);\n var win = /Win/.test(navigator.platform);\n\n // CONSTRUCTOR\n\n function CodeMirror(place, options) {\n if (!(this instanceof CodeMirror)) return new CodeMirror(place, options, true);\n \n this.options = options = options || {};\n // Determine effective options based on given values and defaults.\n for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt))\n options[opt] = defaults[opt];\n setGuttersForLineNumbers(options);\n\n var display = this.display = makeDisplay(place);\n display.wrapper.CodeMirror = this;\n updateGutters(this);\n themeChanged(this);\n keyMapChanged(this);\n if (options.tabindex != null) display.input.tabIndex = options.tabindex;\n if (options.autofocus) focusInput(this);\n if (options.lineWrapping) display.wrapper.className += \" CodeMirror-wrap\";\n\n var doc = new BranchChunk([new LeafChunk([new Line(\"\", null, textHeight(display))])]);\n // frontier is the point up to which the content has been parsed,\n doc.frontier = 0;\n doc.highlight = new Delayed();\n doc.tabSize = options.tabSize;\n // The selection. These are always maintained to point at valid\n // positions. Inverted is used to remember that the user is\n // selecting bottom-to-top.\n this.view = {\n doc: doc,\n sel: {from: {line: 0, ch: 0}, to: {line: 0, ch: 0}, inverted: false, shift: false},\n scrollTop: 0, scrollLeft: 0,\n overwrite: false, focused: false,\n // Tracks the maximum line length so that\n // the horizontal scrollbar can be kept\n // static when scrolling.\n maxLine: getLine(doc, 0),\n maxLineChanged: false,\n suppressEdits: false,\n goalColumn: null\n };\n loadMode(this);\n\n // Initialize the content.\n this.setValue(options.value || \"\");\n doc.history = new History();\n\n registerEventHandlers(this);\n // IE throws unspecified error in certain cases, when\n // trying to access activeElement before onload\n var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { }\n if (hasFocus || options.autofocus) setTimeout(bind(onFocus, this), 20);\n else onBlur(this);\n\n for (var opt in optionHandlers)\n if (optionHandlers.propertyIsEnumerable(opt))\n optionHandlers[opt](this, options[opt]);\n }\n\n // DISPLAY CONSTRUCTOR\n\n function makeDisplay(place) {\n var d = {};\n var input = d.input = elt(\"textarea\", null, null, \"position: absolute; padding: 0; width: 1px; height: 1em; outline: none;\");\n input.setAttribute(\"wrap\", \"off\"); input.setAttribute(\"autocorrect\", \"off\"); input.setAttribute(\"autocapitalize\", \"off\");\n // Wraps and hides input textarea\n d.inputDiv = elt(\"div\", [input], null, \"overflow: hidden; position: relative; width: 3px; height: 0px;\");\n // The actual fake scrollbars.\n d.scrollbarH = elt(\"div\", [elt(\"div\", null, null, \"height: 1px\")], \"CodeMirror-hscrollbar\");\n d.scrollbarV = elt(\"div\", [elt(\"div\", null, null, \"width: 1px\")], \"CodeMirror-vscrollbar\");\n d.scrollbarFiller = elt(\"div\", null, \"CodeMirror-scrollbar-filler\");\n // DIVs containing the selection and the actual code\n d.lineDiv = elt(\"div\");\n d.selectionDiv = elt(\"div\", null, null, \"position: relative; z-index: 1\");\n // Blinky cursor, and element used to ensure cursor fits at the end of a line\n d.cursor = elt(\"pre\", \"\\u00a0\", \"CodeMirror-cursor\");\n // Secondary cursor, shown when on a 'jump' in bi-directional text\n d.otherCursor = elt(\"pre\", \"\\u00a0\", \"CodeMirror-cursor CodeMirror-secondarycursor\");\n // Used to measure text size\n d.measure = elt(\"div\", null, \"CodeMirror-measure\");\n // Wraps everything that needs to exist inside the vertically-padded coordinate system\n d.lineSpace = elt(\"div\", [d.measure, d.cursor, d.otherCursor, d.selectionDiv, d.lineDiv],\n null, \"position: relative; outline: none\");\n // Moved around its parent to cover visible view\n d.mover = elt(\"div\", [elt(\"div\", [d.lineSpace], \"CodeMirror-lines\")], null, \"position: relative\");\n d.gutters = elt(\"div\", null, \"CodeMirror-gutters\");\n d.lineGutter = null;\n // Set to the height of the text, causes scrolling\n d.sizer = elt(\"div\", [d.mover], \"CodeMirror-sizer\");\n // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers\n d.heightForcer = elt(\"div\", \"\\u00a0\", null, \"position: absolute; height: \" + scrollerCutOff + \"px\");\n // Provides scrolling\n d.scroller = elt(\"div\", [d.sizer, d.heightForcer], \"CodeMirror-scroll\");\n d.scroller.setAttribute(\"tabIndex\", \"-1\");\n // The element in which the editor lives.\n d.wrapper = elt(\"div\", [d.gutters, d.inputDiv, d.scrollbarH, d.scrollbarV,\n d.scrollbarFiller, d.scroller], \"CodeMirror\");\n // Work around IE7 z-index bug\n if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }\n if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper);\n\n // Needed to hide big blue blinking cursor on Mobile Safari\n if (ios) input.style.width = \"0px\";\n if (!webkit) d.scroller.draggable = true;\n // Needed to handle Tab key in KHTML\n if (khtml) { d.inputDiv.style.height = \"1px\"; d.inputDiv.style.position = \"absolute\"; }\n // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).\n else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = \"18px\";\n\n // Current visible range (may be bigger than the view window).\n d.viewOffset = d.showingFrom = d.showingTo = d.lastSizeC = 0;\n\n // Used to only resize the line number gutter when necessary (when\n // the amount of lines crosses a boundary that makes its width change)\n d.lineNumWidth = d.lineNumChars = null;\n // See readInput and resetInput\n d.prevInput = \"\";\n // Set to true when a non-horizontal-scrolling widget is added. As\n // an optimization, widget aligning is skipped when d is false.\n d.alignWidgets = false;\n // Flag that indicates whether we currently expect input to appear\n // (after some event like 'keypress' or 'input') and are polling\n // intensively.\n d.pollingFast = false;\n // Self-resetting timeout for the poller\n d.poll = new Delayed();\n // True when a drag from the editor is active\n d.draggingText = false;\n\n d.cachedCharWidth = d.cachedTextHeight = null;\n d.measureLineCache = [];\n d.measureLineCache.pos = 0;\n\n // Tracks when resetInput has punted to just putting a short\n // string instead of the (large) selection.\n d.inaccurateSelection = false;\n\n return d;\n }\n\n // STATE UPDATES\n\n // Used to get the editor into a consistent state again when options change.\n\n function loadMode(cm) {\n var doc = cm.view.doc;\n doc.mode = CodeMirror.getMode(cm.options, cm.options.mode);\n doc.iter(0, doc.size, function(line) { line.stateAfter = null; });\n doc.frontier = 0;\n startWorker(cm, 100);\n }\n\n function wrappingChanged(cm) {\n var doc = cm.view.doc;\n if (cm.options.lineWrapping) {\n cm.display.wrapper.className += \" CodeMirror-wrap\";\n var perLine = cm.display.wrapper.clientWidth / charWidth(cm.display) - 3;\n doc.iter(0, doc.size, function(line) {\n if (line.hidden) return;\n var guess = Math.ceil(line.text.length / perLine) || 1;\n if (guess != 1) updateLineHeight(line, guess);\n });\n cm.display.sizer.style.minWidth = \"\";\n } else {\n cm.display.wrapper.className = cm.display.wrapper.className.replace(\" CodeMirror-wrap\", \"\");\n computeMaxLength(cm.view);\n doc.iter(0, doc.size, function(line) {\n if (line.height != 1 && !line.hidden) updateLineHeight(line, 1);\n });\n }\n regChange(cm, 0, doc.size);\n }\n\n function keyMapChanged(cm) {\n var style = keyMap[cm.options.keyMap].style;\n cm.display.wrapper.className = cm.display.wrapper.className.replace(/\\s*cm-keymap-\\S+/g, \"\") +\n (style ? \" cm-keymap-\" + style : \"\");\n }\n\n function themeChanged(cm) {\n cm.display.wrapper.className = cm.display.wrapper.className.replace(/\\s*cm-s-\\S+/g, \"\") +\n cm.options.theme.replace(/(^|\\s)\\s*/g, \" cm-s-\");\n }\n\n function guttersChanged(cm) {\n updateGutters(cm);\n updateDisplay(cm, true);\n }\n\n function updateGutters(cm) {\n var gutters = cm.display.gutters, specs = cm.options.gutters;\n removeChildren(gutters);\n for (var i = 0; i < specs.length; ++i) {\n var gutterClass = specs[i];\n var gElt = gutters.appendChild(elt(\"div\", null, \"CodeMirror-gutter \" + gutterClass));\n if (gutterClass == \"CodeMirror-linenumbers\") {\n cm.display.lineGutter = gElt;\n gElt.style.width = (cm.display.lineNumWidth || 1) + \"px\";\n }\n }\n gutters.style.display = i ? \"\" : \"none\";\n }\n\n function computeMaxLength(view) {\n view.maxLine = getLine(view.doc, 0); view.maxLineChanged = true;\n var maxLineLength = view.maxLine.text.length;\n view.doc.iter(1, view.doc.size, function(line) {\n var l = line.text;\n if (!line.hidden && l.length > maxLineLength) {\n maxLineLength = l.length; view.maxLine = line;\n }\n });\n }\n\n // Make sure the gutters options contains the element\n // \"CodeMirror-linenumbers\" when the lineNumbers option is true.\n function setGuttersForLineNumbers(options) {\n var found = false;\n for (var i = 0; i < options.gutters.length; ++i) {\n if (options.gutters[i] == \"CodeMirror-linenumbers\") {\n if (options.lineNumbers) found = true;\n else options.gutters.splice(i--, 1);\n }\n }\n if (!found && options.lineNumbers)\n options.gutters.push(\"CodeMirror-linenumbers\");\n }\n\n // SCROLLBARS\n\n // Re-synchronize the fake scrollbars with the actual size of the\n // content. Optionally force a scrollTop.\n function updateScrollbars(d /* display */, docHeight, scrollTop) {\n d.sizer.style.minHeight = d.heightForcer.style.top = (docHeight + 2 * paddingTop(d)) + \"px\";\n var needsH = d.scroller.scrollWidth > d.scroller.clientWidth;\n var needsV = d.scroller.scrollHeight > d.scroller.clientHeight;\n if (needsV) {\n d.scrollbarV.style.display = \"block\";\n d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + \"px\" : \"0\";\n d.scrollbarV.firstChild.style.height = \n (d.scroller.scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + \"px\";\n if (scrollTop != null) {\n d.scrollbarV.scrollTop = d.scroller.scrollTop = scrollTop;\n // 'Nudge' the scrollbar to work around a Webkit bug where,\n // in some situations, we'd end up with a scrollbar that\n // reported its scrollTop (and looked) as expected, but\n // *behaved* as if it was still in a previous state (i.e.\n // couldn't scroll up, even though it appeared to be at the\n // bottom).\n if (webkit) setTimeout(function() {\n if (d.scrollbarV.scrollTop != scrollTop) return;\n d.scrollbarV.scrollTop = scrollTop + (scrollTop ? -1 : 1);\n d.scrollbarV.scrollTop = scrollTop;\n }, 0);\n }\n } else d.scrollbarV.style.display = \"\";\n if (needsH) {\n d.scrollbarH.style.display = \"block\";\n d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + \"px\" : \"0\";\n d.scrollbarH.firstChild.style.width =\n (d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + \"px\";\n } else d.scrollbarH.style.display = \"\";\n if (needsH && needsV) {\n d.scrollbarFiller.style.display = \"block\";\n d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + \"px\";\n } else d.scrollbarFiller.style.display = \"\";\n\n if (mac_geLion && scrollbarWidth(d.measure) === 0)\n d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = \"12px\";\n }\n\n function visibleLines(display, doc, scrollTop) {\n var top = (scrollTop != null ? scrollTop : display.scroller.scrollTop) - paddingTop(display);\n var fromHeight = Math.max(0, Math.floor(top));\n var toHeight = Math.ceil(top + display.wrapper.clientHeight);\n return {from: lineAtHeight(doc, fromHeight),\n to: lineAtHeight(doc, toHeight)};\n }\n\n // LINE NUMBERS\n\n function alignLineNumbers(display) {\n if (display.alignWidgets) {\n var margin = compensateForHScroll(display);\n for (var n = display.lineDiv.firstChild; n; n = n.nextSibling)\n for (var c = n.lastChild; c && c.widget; c = c.prevSibling)\n if (c.widget.noHScroll)\n c.style.marginLeft = (c.widget.coverGutter ? margin : margin + display.gutters.offsetWidth) + \"px\";\n }\n if (!display.lineGutter) return;\n var l = lineNumberLeftPos(display) + \"px\";\n for (var n = display.lineDiv.firstChild; n; n = n.nextSibling)\n n.firstChild.style.left = l;\n }\n\n function maybeUpdateLineNumberWidth(cm) {\n if (!cm.options.lineNumbers) return false;\n var doc = cm.view.doc, last = lineNumberFor(cm.options, doc.size - 1), display = cm.display;\n if (last.length != display.lineNumChars) {\n var test = display.measure.appendChild(elt(\"div\", [elt(\"div\", last)],\n \"CodeMirror-linenumber CodeMirror-gutter-elt\"));\n display.lineNumWidth = test.firstChild.offsetWidth;\n display.lineNumChars = display.lineNumWidth ? last.length : -1;\n display.lineGutter.style.width = display.lineNumWidth + \"px\";\n return true;\n }\n return false;\n }\n\n function lineNumberFor(options, i) {\n return String(options.lineNumberFormatter(i + options.firstLineNumber));\n }\n function compensateForHScroll(display) {\n return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;\n }\n function lineNumberLeftPos(display) {\n return compensateForHScroll(display) + display.lineGutter.offsetLeft;\n }\n\n // DISPLAY DRAWING\n\n function updateDisplay(cm, changes, scrollTop) {\n var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo;\n var updated = updateDisplayInner(cm, changes, scrollTop);\n if (updated) {\n signalLater(cm, cm, \"update\", cm);\n if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo)\n signalLater(cm, cm, \"update\", cm, cm.display.showingFrom, cm.display.showingTo);\n }\n updateSelection(cm);\n updateScrollbars(cm.display, cm.view.doc.height, scrollTop);\n return updated;\n }\n\n // Uses a set of changes plus the current scroll position to\n // determine which DOM updates have to be made, and makes the\n // updates.\n function updateDisplayInner(cm, changes, scrollTop) {\n var display = cm.display, doc = cm.view.doc;\n if (!display.wrapper.clientWidth) {\n display.showingFrom = display.showingTo = display.viewOffset = 0;\n return;\n }\n\n // Compute the new visible window\n // If scrollTop is specified, use that to determine which lines\n // to render instead of the current scrollbar position.\n var visible = visibleLines(display, doc, scrollTop);\n // Bail out if the visible area is already rendered and nothing changed.\n if (changes !== true && changes.length == 0 &&\n visible.from > display.showingFrom && visible.to < display.showingTo)\n return;\n\n if (changes && changes !== true && maybeUpdateLineNumberWidth(cm))\n changes = true;\n display.sizer.style.marginLeft = display.scrollbarH.style.left = display.gutters.offsetWidth + \"px\";\n // Used to determine which lines need their line numbers updated\n var positionsChangedFrom = changes === true ? 0 : Infinity;\n if (cm.options.lineNumbers && changes && changes !== true)\n for (var i = 0; i < changes.length; ++i)\n if (changes[i].diff) { positionsChangedFrom = changes[i].from; break; }\n\n var from = Math.max(visible.from - 100, 0), to = Math.min(doc.size, visible.to + 100);\n if (display.showingFrom < from && from - display.showingFrom < 20) from = display.showingFrom;\n if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(doc.size, display.showingTo);\n\n // Create a range of theoretically intact lines, and punch holes\n // in that using the change info.\n var intact = changes === true ? [] :\n computeIntact([{from: display.showingFrom, to: display.showingTo, domStart: 0}], changes);\n // Clip off the parts that won't be visible\n var intactLines = 0;\n for (var i = 0; i < intact.length; ++i) {\n var range = intact[i];\n if (range.from < from) {range.domStart += (from - range.from); range.from = from;}\n if (range.to > to) range.to = to;\n if (range.from >= range.to) intact.splice(i--, 1);\n else intactLines += range.to - range.from;\n }\n if (intactLines == to - from && from == display.showingFrom && to == display.showingTo)\n return;\n intact.sort(function(a, b) {return a.domStart - b.domStart;});\n\n display.lineDiv.style.display = \"none\";\n patchDisplay(cm, from, to, intact, positionsChangedFrom);\n display.lineDiv.style.display = \"\";\n\n var different = from != display.showingFrom || to != display.showingTo ||\n display.lastSizeC != display.wrapper.clientHeight;\n // This is just a bogus formula that detects when the editor is\n // resized or the font size changes.\n if (different) display.lastSizeC = display.wrapper.clientHeight;\n display.showingFrom = from; display.showingTo = to;\n display.viewOffset = heightAtLine(doc, from);\n startWorker(cm, 100);\n\n // Since this is all rather error prone, it is honoured with the\n // only assertion in the whole file.\n if (display.lineDiv.childNodes.length != display.showingTo - display.showingFrom)\n throw new Error(\"BAD PATCH! \" + JSON.stringify(intact) + \" size=\" + (display.showingTo - display.showingFrom) +\n \" nodes=\" + display.lineDiv.childNodes.length);\n\n // Update line heights for visible lines based on actual DOM\n // sizes\n var curNode = display.lineDiv.firstChild, heightChanged = false;\n var relativeTo = curNode.offsetTop;\n doc.iter(display.showingFrom, display.showingTo, function(line) {\n // Work around bizarro IE7 bug where, sometimes, our curNode\n // is magically replaced with a new node in the DOM, leaving\n // us with a reference to an orphan (nextSibling-less) node.\n if (!curNode) return;\n if (!line.hidden) {\n var end = curNode.offsetHeight + curNode.offsetTop;\n var height = end - relativeTo, diff = line.height - height;\n if (height < 2) height = textHeight(display);\n relativeTo = end;\n if (diff > .001 || diff < -.001) {\n updateLineHeight(line, height);\n heightChanged = true;\n }\n }\n curNode = curNode.nextSibling;\n });\n\n // Position the mover div to align with the current virtual scroll position\n display.mover.style.top = display.viewOffset + \"px\";\n return true;\n }\n\n function computeIntact(intact, changes) {\n for (var i = 0, l = changes.length || 0; i < l; ++i) {\n var change = changes[i], intact2 = [], diff = change.diff || 0;\n for (var j = 0, l2 = intact.length; j < l2; ++j) {\n var range = intact[j];\n if (change.to <= range.from && change.diff)\n intact2.push({from: range.from + diff, to: range.to + diff,\n domStart: range.domStart});\n else if (change.to <= range.from || change.from >= range.to)\n intact2.push(range);\n else {\n if (change.from > range.from)\n intact2.push({from: range.from, to: change.from, domStart: range.domStart});\n if (change.to < range.to)\n intact2.push({from: change.to + diff, to: range.to + diff,\n domStart: range.domStart + (change.to - range.from)});\n }\n }\n intact = intact2;\n }\n return intact;\n }\n\n function patchDisplay(cm, from, to, intact, updateNumbersFrom) {\n function killNode(node) {\n var tmp = node.nextSibling;\n node.parentNode.removeChild(node);\n return tmp;\n }\n var display = cm.display, lineNumbers = cm.options.lineNumbers;\n var lineNumberPos = lineNumbers && lineNumberLeftPos(display);\n // The first pass removes the DOM nodes that aren't intact.\n if (!intact.length) removeChildren(display.lineDiv);\n else {\n var domPos = 0, curNode = display.lineDiv.firstChild, n;\n for (var i = 0; i < intact.length; ++i) {\n var cur = intact[i];\n while (cur.domStart > domPos) {curNode = killNode(curNode); domPos++;}\n for (var j = cur.from, e = cur.to; j < e; ++j) {\n if (lineNumbers && updateNumbersFrom <= j && curNode.firstChild)\n setTextContent(curNode.firstChild, lineNumberFor(cm.options, j));\n curNode = curNode.nextSibling; domPos++;\n }\n }\n while (curNode) curNode = killNode(curNode);\n }\n // This pass fills in the lines that actually changed.\n var nextIntact = intact.shift(), curNode = display.lineDiv.firstChild;\n var j = from, gutterSpecs = cm.options.gutters;\n cm.view.doc.iter(from, to, function(line) {\n if (nextIntact && nextIntact.to == j) nextIntact = intact.shift();\n if (!nextIntact || nextIntact.from > j) {\n if (line.hidden) var lineElement = elt(\"div\");\n else {\n var lineElement = lineContent(cm, line), markers = line.gutterMarkers;\n if (line.className) lineElement.className = line.className;\n // Lines with gutter elements or a background class need\n // to be wrapped again, and have the extra elements added\n // to the wrapper div\n if (lineNumbers || markers || line.bgClassName || (line.widgets && line.widgets.length)) {\n var inside = [];\n if (lineNumbers)\n inside.push(elt(\"div\", lineNumberFor(cm.options, j),\n \"CodeMirror-linenumber CodeMirror-gutter-elt\",\n \"left: \" + lineNumberPos + \"px; width: \"\n + display.lineNumWidth + \"px\"));\n if (markers)\n for (var k = 0; k < gutterSpecs.length; ++k) {\n var id = gutterSpecs[k], found = markers.hasOwnProperty(id) && markers[id];\n if (found) {\n var gutterElt = display.gutters.childNodes[k];\n inside.push(elt(\"div\", [found], \"CodeMirror-gutter-elt\", \"left: \" +\n (gutterElt.offsetLeft - display.gutters.offsetWidth) +\n \"px; width: \" + gutterElt.clientWidth + \"px\"));\n }\n }\n // Kludge to make sure the styled element lies behind the selection (by z-index)\n if (line.bgClassName)\n inside.push(elt(\"div\", \"\\u00a0\", line.bgClassName + \" CodeMirror-linebackground\"));\n inside.push(lineElement);\n if (line.widgets)\n for (var i = 0, ws = line.widgets; i < ws.length; ++i) {\n var widget = ws[i], node = elt(\"div\", [widget.node], \"CodeMirror-linewidget\");\n node.widget = widget;\n if (widget.noHScroll)\n node.style.width = display.wrapper.clientWidth + \"px\";\n if (widget.coverGutter) {\n node.style.zIndex = 5;\n node.style.position = \"relative\";\n node.style.marginLeft =\n (widget.noHScroll ? compensateForHScroll(display) : -display.gutters.offsetWidth) + \"px\";\n }\n inside.push(node);\n }\n lineElement = elt(\"div\", inside, null, \"position: relative\");\n if (ie_lt8) lineElement.style.zIndex = 2;\n }\n }\n display.lineDiv.insertBefore(lineElement, curNode);\n } else {\n curNode = curNode.nextSibling;\n }\n ++j;\n });\n }\n\n // SELECTION / CURSOR\n\n function selHead(view) {\n return view.sel.inverted ? view.sel.from : view.sel.to;\n }\n\n function updateSelection(cm) {\n var headPos, display = cm.display, doc = cm.view.doc, sel = cm.view.sel;\n if (posEq(sel.from, sel.to)) { // No selection, single cursor\n var pos = headPos = cursorCoords(cm, sel.from, \"div\");\n display.cursor.style.left = pos.left + \"px\";\n display.cursor.style.top = pos.top + \"px\";\n display.cursor.style.height = (pos.bottom - pos.top) * .85 + \"px\";\n display.cursor.style.display = \"\";\n display.selectionDiv.style.display = \"none\";\n\n if (pos.other) {\n display.otherCursor.style.display = \"\";\n display.otherCursor.style.left = pos.other.left + \"px\";\n display.otherCursor.style.top = pos.other.top + \"px\";\n display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + \"px\";\n } else { display.otherCursor.style.display = \"none\"; }\n } else {\n headPos = cursorCoords(cm, selHead(cm.view), \"div\");\n var fragment = document.createDocumentFragment();\n var clientWidth = display.lineSpace.clientWidth;\n var add = function(left, top, width, bottom) {\n if (top < 0) top = 0;\n fragment.appendChild(elt(\"div\", null, \"CodeMirror-selected\", \"position: absolute; left: \" + left +\n \"px; top: \" + top + \"px; width: \" + (width == null ? clientWidth : width) +\n \"px; height: \" + (bottom - top) + \"px\"));\n };\n\n var middleFrom = sel.from.line + 1, middleTo = sel.to.line - 1, sameLine = sel.from.line == sel.to.line;\n var drawForLine = function(line, from, toArg, retTop) {\n var lineObj = getLine(doc, line), lineLen = lineObj.text.length;\n var coords = function(ch) { return charCoords(cm, {line: line, ch: ch}, \"div\", lineObj); };\n var rVal = retTop ? Infinity : -Infinity;\n iterateBidiSections(getOrder(lineObj), from, toArg == null ? lineLen : toArg, function(from, to, dir) {\n var leftPos = coords(dir == \"rtl\" ? to - 1 : from);\n var rightPos = coords(dir == \"rtl\" ? from : to - 1);\n var left = leftPos.left, right = rightPos.right;\n if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part\n add(left, leftPos.top, null, leftPos.bottom);\n left = paddingLeft(display);\n if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);\n }\n if (toArg == null && to == lineLen) right = clientWidth;\n rVal = retTop ? Math.min(rightPos.top, rVal) : Math.max(rightPos.bottom, rVal);\n add(left, rightPos.top, right - left, rightPos.bottom);\n });\n return rVal;\n };\n\n var middleTop = Infinity, middleBot = -Infinity;\n if (sel.from.ch || sameLine)\n // Draw the first line of selection.\n middleTop = drawForLine(sel.from.line, sel.from.ch, sameLine ? sel.to.ch : null);\n else\n // Simply include it in the middle block.\n middleFrom = sel.from.line;\n\n if (!sameLine && sel.to.ch)\n middleBot = drawForLine(sel.to.line, 0, sel.to.ch, true);\n\n if (middleFrom <= middleTo) {\n // Draw the middle\n var botLine = getLine(doc, middleTo),\n bottom = charCoords(cm, {line: middleTo, ch: botLine.text.length}, \"div\", botLine);\n // Kludge to try and prevent fetching coordinates twice if\n // start end end are on same line.\n var top = (middleFrom != middleTo || botLine.height > bottom.bottom - bottom.top) ?\n charCoords(cm, {line: middleFrom, ch: 0}, \"div\") : bottom;\n middleTop = Math.min(middleTop, top.top);\n middleBot = Math.max(middleBot, bottom.bottom);\n }\n if (middleTop < middleBot) add(paddingLeft(display), middleTop, null, middleBot);\n\n removeChildrenAndAdd(display.selectionDiv, fragment);\n display.cursor.style.display = display.otherCursor.style.display = \"none\";\n display.selectionDiv.style.display = \"\";\n }\n\n // Move the hidden textarea near the cursor to prevent scrolling artifacts\n var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();\n display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,\n headPos.top + lineOff.top - wrapOff.top)) + \"px\";\n display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,\n headPos.left + lineOff.left - wrapOff.left)) + \"px\";\n }\n\n // Cursor-blinking\n function restartBlink(cm) {\n var display = cm.display;\n clearInterval(display.blinker);\n var on = true;\n display.cursor.style.visibility = display.otherCursor.style.visibility = \"\";\n display.blinker = setInterval(function() {\n display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? \"\" : \"hidden\";\n }, cm.options.cursorBlinkRate);\n }\n\n // HIGHLIGHT WORKER\n\n function startWorker(cm, time) {\n if (cm.view.doc.frontier < cm.display.showingTo)\n cm.view.doc.highlight.set(time, bind(highlightWorker, cm));\n }\n\n function highlightWorker(cm) {\n var doc = cm.view.doc;\n if (doc.frontier >= cm.display.showingTo) return;\n var end = +new Date + cm.options.workTime;\n var state = copyState(doc.mode, getStateBefore(doc, doc.frontier));\n var startFrontier = doc.frontier;\n doc.iter(doc.frontier, cm.display.showingTo, function(line) {\n if (doc.frontier >= cm.display.showingFrom) { // Visible\n line.highlight(doc.mode, state, cm.options.tabSize);\n line.stateAfter = copyState(doc.mode, state);\n } else {\n line.process(doc.mode, state, cm.options.tabSize);\n line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;\n }\n ++doc.frontier;\n if (+new Date > end) {\n startWorker(cm, cm.options.workDelay);\n return true;\n }\n });\n if (cm.display.showingTo > startFrontier && doc.frontier >= cm.display.showingFrom)\n operation(cm, function() {regChange(this, startFrontier, doc.frontier);})();\n }\n\n // Finds the line to start with when starting a parse. Tries to\n // find a line with a stateAfter, so that it can start with a\n // valid state. If that fails, it returns the line with the\n // smallest indentation, which tends to need the least context to\n // parse correctly.\n function findStartLine(doc, n) {\n var minindent, minline;\n for (var search = n, lim = n - 100; search > lim; --search) {\n if (search == 0) return 0;\n var line = getLine(doc, search-1);\n if (line.stateAfter) return search;\n var indented = line.indentation(doc.tabSize);\n if (minline == null || minindent > indented) {\n minline = search - 1;\n minindent = indented;\n }\n }\n return minline;\n }\n\n function getStateBefore(doc, n) {\n var pos = findStartLine(doc, n), state = pos && getLine(doc, pos-1).stateAfter;\n if (!state) state = startState(doc.mode);\n else state = copyState(doc.mode, state);\n doc.iter(pos, n, function(line) {\n line.process(doc.mode, state, doc.tabSize);\n line.stateAfter = (pos == n - 1 || pos % 5 == 0) ? copyState(doc.mode, state) : null;\n });\n return state;\n }\n\n // POSITION MEASUREMENT\n \n function paddingTop(display) {return display.lineSpace.offsetTop;}\n function paddingLeft(display) {\n var e = removeChildrenAndAdd(display.measure, elt(\"pre\")).appendChild(elt(\"span\", \"x\"));\n return e.offsetLeft;\n }\n\n function measureLine(cm, line, ch) {\n var wrapping = cm.options.lineWrapping, display = cm.display;\n // First look in the cache\n var cache = cm.display.measureLineCache;\n for (var i = 0; i < cache.length; ++i) {\n var memo = cache[i];\n if (memo.ch == ch && memo.text == line.text &&\n (!wrapping || display.scroller.clientWidth == memo.width))\n return {top: memo.top, bottom: memo.bottom, left: memo.left, right: memo.right};\n }\n\n var atEnd = ch && ch == line.text.length;\n var pre = lineContent(cm, line, atEnd ? ch - 1 : ch);\n removeChildrenAndAdd(display.measure, pre);\n var anchor = pre.anchor, outer = display.lineDiv.getBoundingClientRect();\n // We'll sample once at the top, once at the bottom of the line,\n // to get the real line height (in case there tokens on the line\n // with bigger fonts)\n anchor.style.verticalAlign = \"top\";\n var box1 = anchor.getBoundingClientRect(), left = box1.left - outer.left, right = box1.right - outer.left;\n if (ie) {\n var left1 = anchor.offsetLeft;\n // In IE, verticalAlign does not influence offsetTop, unless\n // the element is an inline-block. Unfortunately, inline\n // blocks have different wrapping behaviour, so we have to do\n // some icky thing with inserting \"Zero-Width No-Break Spaces\"\n // to compensate for wrapping artifacts.\n anchor.style.display = \"inline-block\";\n if (wrapping && anchor.offsetLeft != left1) {\n anchor.parentNode.insertBefore(document.createTextNode(\"\\ufeff\"), anchor);\n if (anchor.offsetLeft != left1)\n anchor.parentNode.insertBefore(document.createTextNode(\"\\ufeff\"), anchor.nextSibling);\n if (anchor.offsetLeft != left1)\n anchor.parentNode.removeChild(anchor.previousSibling);\n }\n }\n var top = Math.max(0, box1.top - outer.top);\n anchor.style.verticalAlign = \"bottom\";\n var bottom = Math.min(anchor.getBoundingClientRect().bottom - outer.top, pre.offsetHeight);\n if (atEnd) left = right;\n\n // Store result in the cache\n var memo = {ch: ch, text: line.text, width: display.wrapper.clientWidth,\n top: top, bottom: bottom, left: left, right: right};\n if (cache.length == 8) cache[++cache.pos % 8] = memo;\n else cache.push(memo);\n\n return {top: top, bottom: bottom, left: left, right: right};\n }\n\n // Context is one of \"line\", \"div\" (display.lineDiv), \"local\"/null (editor), or \"page\"\n function intoCoordSystem(cm, pos, rect, context) {\n if (context == \"line\") return rect;\n if (!context) context = \"local\";\n var yOff = heightAtLine(cm.view.doc, pos.line);\n if (context != \"local\") yOff -= cm.display.viewOffset;\n if (context == \"page\") {\n var lOff = cm.display.lineSpace.getBoundingClientRect();\n yOff += lOff.top; rect.left += lOff.left; rect.right += lOff.right;\n }\n rect.top += yOff; rect.bottom += yOff;\n return rect;\n }\n\n function charCoords(cm, pos, context, lineObj) {\n if (!lineObj) lineObj = getLine(cm.view.doc, pos.line);\n return intoCoordSystem(cm, pos, measureLine(cm, lineObj, pos.ch), context);\n }\n\n function cursorCoords(cm, pos, context, lineObj) {\n lineObj = lineObj || getLine(cm.view.doc, pos.line);\n function get(ch, right) {\n var m = measureLine(cm, lineObj, ch);\n if (right) m.left = m.right; else m.right = m.left;\n return intoCoordSystem(cm, pos, m, context);\n }\n var order = getOrder(lineObj), ch = pos.ch;\n if (!order) return get(ch);\n var main, other, linedir = order[0].level;\n for (var i = 0; i < order.length; ++i) {\n var part = order[i], rtl = part.level % 2, nb, here;\n if (part.from < ch && part.to > ch) return get(ch, rtl);\n var left = rtl ? part.to : part.from, right = rtl ? part.from : part.to;\n if (left == ch) {\n // Opera and IE return bogus offsets and widths for edges\n // where the direction flips, but only for the side with the\n // lower level. So we try to use the side with the higher\n // level.\n if (i && part.level < (nb = order[i-1]).level) here = get(nb.level % 2 ? nb.from : nb.to - 1, true);\n else here = get(rtl && part.from != part.to ? ch - 1 : ch);\n if (rtl == linedir) main = here; else other = here;\n } else if (right == ch) {\n var nb = i < order.length - 1 && order[i+1];\n if (!rtl && nb && nb.from == nb.to) continue;\n if (nb && part.level < nb.level) here = get(nb.level % 2 ? nb.to - 1 : nb.from);\n else here = get(rtl ? ch : ch - 1, true);\n if (rtl == linedir) main = here; else other = here;\n }\n }\n if (linedir && !ch) other = get(order[0].to - 1);\n if (!main) return other;\n if (other) main.other = other;\n return main;\n }\n\n // Coords must be lineSpace-local\n function coordsChar(cm, x, y) {\n var display = cm.display, doc = cm.view.doc;\n var cw = charWidth(display), heightPos = display.viewOffset + y;\n if (heightPos < 0) return {line: 0, ch: 0};\n var lineNo = lineAtHeight(doc, heightPos);\n if (lineNo >= doc.size) return {line: doc.size - 1, ch: getLine(doc, doc.size - 1).text.length};\n var lineObj = getLine(doc, lineNo);\n if (!lineObj.text.length) return {line: lineNo, ch: 0};\n var tw = cm.options.lineWrapping, innerOff = tw ? heightPos - heightAtLine(doc, lineNo) : 0;\n if (x < 0) x = 0;\n var wrongLine = false;\n function getX(ch) {\n var sp = cursorCoords(cm, {line: lineNo, ch: ch}, \"line\", lineObj);\n if (tw) {\n wrongLine = true;\n if (innerOff > sp.bottom) return Math.max(0, sp.left - display.wrapper.clientWidth);\n else if (innerOff < sp.top) return sp.left + display.wrapper.clientWidth;\n else wrongLine = false;\n }\n return sp.left;\n }\n var bidi = getOrder(lineObj), dist = lineObj.text.length;\n var from = lineLeft(lineObj), fromX = 0, to = lineRight(lineObj), toX;\n if (!bidi) {\n // Guess a suitable upper bound for our search.\n var estimated = Math.min(to, Math.ceil((x + Math.floor(innerOff / textHeight(display)) *\n display.wrapper.clientWidth * .9) / cw));\n for (;;) {\n var estX = getX(estimated);\n if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2));\n else {toX = estX; to = estimated; break;}\n }\n // Try to guess a suitable lower bound as well.\n estimated = Math.floor(to * 0.8); estX = getX(estimated);\n if (estX < x) {from = estimated; fromX = estX;}\n dist = to - from;\n } else toX = getX(to);\n if (x > toX) return {line: lineNo, ch: to};\n // Do a binary search between these bounds.\n for (;;) {\n if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {\n var after = x - fromX < toX - x, ch = after ? from : to;\n while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch;\n return {line: lineNo, ch: ch, after: after};\n }\n var step = Math.ceil(dist / 2), middle = from + step;\n if (bidi) {\n middle = from;\n for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);\n }\n var middleX = getX(middle);\n if (middleX > x) {to = middle; toX = middleX; if (wrongLine) toX += 1000; dist -= step;}\n else {from = middle; fromX = middleX; dist = step;}\n }\n }\n\n var measureText;\n function textHeight(display) {\n if (display.cachedTextHeight != null) return display.cachedTextHeight;\n if (measureText == null) {\n measureText = elt(\"pre\");\n // Measure a bunch of lines, for browsers that compute\n // fractional heights.\n for (var i = 0; i < 49; ++i) {\n measureText.appendChild(document.createTextNode(\"x\"));\n measureText.appendChild(elt(\"br\"));\n }\n measureText.appendChild(document.createTextNode(\"x\"));\n }\n removeChildrenAndAdd(display.measure, measureText);\n var height = measureText.offsetHeight / 50;\n if (height > 3) display.cachedTextHeight = height;\n removeChildren(display.measure);\n return height || 1;\n }\n\n function charWidth(display) {\n if (display.cachedCharWidth != null) return display.cachedCharWidth;\n var anchor = elt(\"span\", \"x\");\n var pre = elt(\"pre\", [anchor]);\n removeChildrenAndAdd(display.measure, pre);\n var width = anchor.offsetWidth;\n if (width > 2) display.cachedCharWidth = width;\n return width || 10;\n }\n\n // OPERATIONS\n\n // Operations are used to wrap changes in such a way that each\n // change won't have to update the cursor and display (which would\n // be awkward, slow, and error-prone), but instead updates are\n // batched and then all combined and executed at once.\n\n function startOperation(cm) {\n if (cm.curOp) ++cm.curOp.depth;\n else cm.curOp = {\n // Nested operations delay update until the outermost one\n // finishes.\n depth: 1,\n // An array of ranges of lines that have to be updated. See\n // updateDisplay.\n changes: [],\n delayedCallbacks: [],\n updateInput: null,\n userSelChange: null,\n textChanged: null,\n selectionChanged: false,\n updateMaxLine: false\n };\n }\n\n function endOperation(cm) {\n var op = cm.curOp;\n if (--op.depth) return;\n cm.curOp = null;\n var view = cm.view, display = cm.display;\n if (op.updateMaxLine) computeMaxLength(view);\n if (view.maxLineChanged && !cm.options.lineWrapping) {\n var width = measureLine(cm, view.maxLine, view.maxLine.text.length).left;\n display.sizer.style.minWidth = (width + 3 + scrollerCutOff) + \"px\";\n view.maxLineChanged = false;\n }\n var newScrollPos, updated;\n if (op.selectionChanged) {\n var coords = cursorCoords(cm, selHead(view));\n newScrollPos = calculateScrollPos(display, coords.left, coords.top, coords.left, coords.bottom);\n }\n if (op.changes.length || newScrollPos && newScrollPos.scrollTop != null)\n updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop);\n if (!updated && op.selectionChanged) updateSelection(cm);\n if (newScrollPos) scrollCursorIntoView(cm);\n if (op.selectionChanged) restartBlink(cm);\n\n if (view.focused && op.updateInput)\n resetInput(cm, op.userSelChange);\n\n if (op.textChanged)\n signal(cm, \"change\", cm, op.textChanged);\n if (op.selectionChanged) signal(cm, \"cursorActivity\", cm);\n for (var i = 0; i < op.delayedCallbacks.length; ++i) op.delayedCallbacks[i](cm);\n }\n\n // Wraps a function in an operation. Returns the wrapped function.\n function operation(cm1, f) {\n return function() {\n var cm = cm1 || this;\n startOperation(cm);\n try {var result = f.apply(cm, arguments);}\n finally {endOperation(cm);}\n return result;\n };\n }\n\n function regChange(cm, from, to, lendiff) {\n cm.curOp.changes.push({from: from, to: to, diff: lendiff});\n }\n\n function compoundChange(cm, f) {\n var hist = cm.view.doc.history;\n hist.startCompound();\n try { return f(); } finally { hist.endCompound(); }\n }\n\n // INPUT HANDLING\n\n function slowPoll(cm) {\n if (cm.view.pollingFast) return;\n cm.display.poll.set(cm.options.pollInterval, function() {\n readInput(cm);\n if (cm.view.focused) slowPoll(cm);\n });\n }\n\n function fastPoll(cm) {\n var missed = false;\n cm.display.pollingFast = true;\n function p() {\n var changed = readInput(cm);\n if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);}\n else {cm.display.pollingFast = false; slowPoll(cm);}\n }\n cm.display.poll.set(20, p);\n }\n\n // prevInput is a hack to work with IME. If we reset the textarea\n // on every change, that breaks IME. So we look for changes\n // compared to the previous content instead. (Modern browsers have\n // events that indicate IME taking place, but these are not widely\n // supported or compatible enough yet to rely on.)\n function readInput(cm) {\n var input = cm.display.input, prevInput = cm.display.prevInput, view = cm.view, sel = view.sel;\n if (!view.focused || hasSelection(input) || cm.options.readOnly) return false;\n var text = input.value;\n if (text == prevInput && posEq(sel.from, sel.to)) return false;\n startOperation(cm);\n view.sel.shift = null;\n var same = 0, l = Math.min(prevInput.length, text.length);\n while (same < l && prevInput[same] == text[same]) ++same;\n if (same < prevInput.length)\n sel.from = {line: sel.from.line, ch: sel.from.ch - (prevInput.length - same)};\n else if (view.overwrite && posEq(sel.from, sel.to))\n sel.to = {line: sel.to.line, ch: Math.min(getLine(cm.view.doc, sel.to.line).text.length, sel.to.ch + (text.length - same))};\n var updateInput = cm.curOp.updateInput;\n cm.replaceSelection(text.slice(same), \"end\");\n cm.curOp.updateInput = updateInput;\n if (text.length > 1000) { input.value = cm.display.prevInput = \"\"; }\n else cm.display.prevInput = text;\n endOperation(cm);\n return true;\n }\n\n function resetInput(cm, user) {\n var view = cm.view, minimal, selected;\n if (!posEq(view.sel.from, view.sel.to)) {\n cm.display.prevInput = \"\";\n minimal = hasCopyEvent &&\n (view.sel.to.line - view.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000);\n if (minimal) cm.display.input.value = \"-\";\n else cm.display.input.value = selected || cm.getSelection();\n if (view.focused) selectInput(cm.display.input);\n } else if (user) cm.display.prevInput = cm.display.input.value = \"\";\n cm.display.inaccurateSelection = minimal;\n }\n\n function focusInput(cm) {\n if (cm.options.readOnly != \"nocursor\") cm.display.input.focus();\n }\n\n // EVENT HANDLERS\n\n function registerEventHandlers(cm) {\n var d = cm.display;\n on(d.scroller, \"mousedown\", operation(cm, onMouseDown));\n on(d.gutters, \"mousedown\", operation(cm, clickInGutter));\n on(d.scroller, \"dblclick\", operation(cm, e_preventDefault));\n on(d.lineSpace, \"selectstart\", function(e) {\n if (!mouseEventInWidget(d, e)) e_preventDefault(e);\n });\n // Gecko browsers fire contextmenu *after* opening the menu, at\n // which point we can't mess with it anymore. Context menu is\n // handled in onMouseDown for Gecko.\n if (!gecko) on(d.scroller, \"contextmenu\", function(e) {onContextMenu(cm, e);});\n\n on(d.scroller, \"scroll\", function() {\n if (d.scroller.scrollTop != cm.view.scrollTop) {\n d.scrollbarV.scrollTop = cm.view.scrollTop = d.scroller.scrollTop;\n updateDisplay(cm, []);\n }\n if (d.scroller.scrollLeft != cm.view.scrollLeft) {\n d.scrollbarH.scrollLeft = cm.view.scrollLeft = d.scroller.scrollLeft;\n alignLineNumbers(cm.display);\n }\n signal(cm, \"scroll\", cm);\n });\n on(d.scrollbarV, \"scroll\", function() {\n if (d.scrollbarV.scrollTop != cm.view.scrollTop) {\n d.scroller.scrollTop = cm.view.scrollTop = d.scrollbarV.scrollTop;\n updateDisplay(cm, []);\n }\n });\n on(d.scrollbarH, \"scroll\", function() {\n if (d.scrollbarH.scrollLeft != cm.view.scrollLeft) {\n d.scroller.scrollLeft = cm.view.scrollLeft = d.scrollbarH.scrollLeft;\n alignLineNumbers(cm.display);\n }\n });\n\n function reFocus() { if (cm.view.focused) setTimeout(bind(focusInput, cm), 0); }\n on(d.scrollbarH, \"mousedown\", reFocus);\n on(d.scrollbarV, \"mousedown\", reFocus);\n // Prevent wrapper from ever scrolling\n on(d.wrapper, \"scroll\", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });\n on(window, \"resize\", function resizeHandler() {\n // Might be a text scaling operation, clear size caches.\n d.cachedCharWidth = d.cachedTextHeight = null;\n d.measureLineCache.length = d.measureLineCache.pos = 0;\n if (d.wrapper.parentNode) updateDisplay(cm, true);\n else off(window, \"resize\", resizeHandler);\n });\n\n on(d.input, \"keyup\", operation(cm, function(e) {\n if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;\n if (e_prop(e, \"keyCode\") == 16) cm.view.sel.shift = null;\n }));\n on(d.input, \"input\", bind(fastPoll, cm));\n on(d.input, \"keydown\", operation(cm, onKeyDown));\n on(d.input, \"keypress\", operation(cm, onKeyPress));\n on(d.input, \"focus\", bind(onFocus, cm));\n on(d.input, \"blur\", bind(onBlur, cm));\n\n function drag_(e) {\n if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return;\n e_stop(e);\n }\n if (cm.options.dragDrop) {\n on(d.scroller, \"dragstart\", function(e){onDragStart(cm, e);});\n on(d.scroller, \"dragenter\", drag_);\n on(d.scroller, \"dragover\", drag_);\n on(d.scroller, \"drop\", operation(cm, onDrop));\n }\n on(d.scroller, \"paste\", function(){focusInput(cm); fastPoll(cm);});\n on(d.input, \"paste\", bind(fastPoll, cm));\n function prepareCopy() {\n if (d.inaccurateSelection) {\n d.prevInput = \"\";\n d.inaccurateSelection = false;\n d.input.value = cm.getSelection();\n selectInput(d.input);\n }\n }\n on(d.input, \"cut\", prepareCopy);\n on(d.input, \"copy\", prepareCopy);\n\n // Needed to handle Tab key in KHTML\n if (khtml) on(d.sizer, \"mouseup\", function() {\n if (document.activeElement == d.input) d.input.blur();\n focusInput(cm);\n });\n }\n\n function mouseEventInWidget(display, e) {\n for (var n = e_target(e); n != display.wrapper; n = n.parentNode)\n if (/\\bCodeMirror-linewidget\\b/.test(n.className) ||\n n.parentNode == display.sizer && n != display.mover) return true;\n }\n\n function posFromMouse(cm, e, liberal) {\n var display = cm.display;\n if (!liberal) {\n var target = e_target(e);\n if (target == display.scrollbarH || target == display.scrollbarH.firstChild ||\n target == display.scrollbarV || target == display.scrollbarV.firstChild ||\n target == display.scrollbarFiller) return null;\n }\n var x, y, space = display.lineSpace.getBoundingClientRect();\n // Fails unpredictably on IE[67] when mouse is dragged around quickly.\n try { x = e.clientX; y = e.clientY; } catch (e) { return null; }\n return coordsChar(cm, x - space.left, y - space.top);\n }\n\n var lastClick, lastDoubleClick;\n function onMouseDown(e) {\n var cm = this, display = cm.display, view = cm.view, sel = view.sel, doc = view.doc;\n setShift(cm.view, e_prop(e, \"shiftKey\"));\n\n if (mouseEventInWidget(display, e)) {\n if (!webkit) {\n display.scroller.draggable = false;\n setTimeout(function(){display.scroller.draggable = true;}, 100);\n }\n return;\n }\n if (clickInGutter.call(cm, e)) return;\n var start = posFromMouse(cm, e);\n\n switch (e_button(e)) {\n case 3:\n if (gecko) onContextMenu.call(cm, cm, e);\n return;\n case 2:\n if (start) setSelectionUser(cm, start, start);\n setTimeout(bind(focusInput, cm), 20);\n e_preventDefault(e);\n return;\n }\n // For button 1, if it was clicked inside the editor\n // (posFromMouse returning non-null), we have to adjust the\n // selection.\n if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;}\n\n if (!view.focused) onFocus(cm);\n\n var now = +new Date, type = \"single\";\n if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {\n type = \"triple\";\n e_preventDefault(e);\n setTimeout(bind(focusInput, cm), 20);\n selectLine(cm, start.line);\n } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {\n type = \"double\";\n lastDoubleClick = {time: now, pos: start};\n e_preventDefault(e);\n var word = findWordAt(getLine(doc, start.line).text, start);\n setSelectionUser(cm, word.from, word.to);\n } else { lastClick = {time: now, pos: start}; }\n\n var last = start;\n if (cm.options.dragDrop && dragAndDrop && !cm.options.readOnly && !posEq(sel.from, sel.to) &&\n !posLess(start, sel.from) && !posLess(sel.to, start) && type == \"single\") {\n var dragEnd = operation(cm, function(e2) {\n if (webkit) display.scroller.draggable = false;\n view.draggingText = false;\n off(document, \"mouseup\", dragEnd);\n off(display.scroller, \"drop\", dragEnd);\n if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {\n e_preventDefault(e2);\n setSelectionUser(cm, start, start);\n focusInput(cm);\n }\n });\n // Let the drag handler handle this.\n if (webkit) display.scroller.draggable = true;\n view.draggingText = true;\n // IE's approach to draggable\n if (display.scroller.dragDrop) display.scroller.dragDrop();\n on(document, \"mouseup\", dragEnd);\n on(display.scroller, \"drop\", dragEnd);\n return;\n }\n e_preventDefault(e);\n if (type == \"single\") setSelectionUser(cm, start, start);\n\n var startstart = sel.from, startend = sel.to;\n\n function doSelect(cur) {\n if (type == \"single\") {\n setSelectionUser(cm, start, cur);\n } else if (type == \"double\") {\n var word = findWordAt(getLine(doc, cur.line).text, cur);\n if (posLess(cur, startstart)) setSelectionUser(cm, word.from, startend);\n else setSelectionUser(cm, startstart, word.to);\n } else if (type == \"triple\") {\n if (posLess(cur, startstart)) setSelectionUser(cm, startend, clipPos(doc, {line: cur.line, ch: 0}));\n else setSelectionUser(cm, startstart, clipPos(doc, {line: cur.line + 1, ch: 0}));\n }\n }\n\n var editorSize = display.wrapper.getBoundingClientRect();\n // Used to ensure timeout re-tries don't fire when another extend\n // happened in the meantime (clearTimeout isn't reliable -- at\n // least on Chrome, the timeouts still happen even when cleared,\n // if the clear happens after their scheduled firing time).\n var counter = 0;\n\n function extend(e) {\n var curCount = ++counter;\n var cur = posFromMouse(cm, e, true);\n if (!cur) return;\n if (!posEq(cur, last)) {\n if (!view.focused) onFocus(cm);\n last = cur;\n doSelect(cur);\n var visible = visibleLines(display, doc);\n if (cur.line >= visible.to || cur.line < visible.from)\n setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);\n } else {\n var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;\n if (outside) setTimeout(operation(cm, function() {\n if (counter != curCount) return;\n display.scroller.scrollTop += outside;\n extend(e);\n }), 50);\n }\n }\n\n function done(e) {\n counter = Infinity;\n var cur = posFromMouse(cm, e);\n if (cur) doSelect(cur);\n e_preventDefault(e);\n focusInput(cm);\n off(document, \"mousemove\", move);\n off(document, \"mouseup\", up);\n }\n\n var move = operation(cm, function(e) {\n e_preventDefault(e);\n if (!ie && !e_button(e)) done(e);\n else extend(e);\n });\n var up = operation(cm, done);\n on(document, \"mousemove\", move);\n on(document, \"mouseup\", up);\n }\n\n function onDrop(e) {\n var cm = this;\n if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return;\n e_preventDefault(e);\n var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;\n if (!pos || cm.options.readOnly) return;\n if (files && files.length && window.FileReader && window.File) {\n var n = files.length, text = Array(n), read = 0;\n var loadFile = function(file, i) {\n var reader = new FileReader;\n reader.onload = function() {\n text[i] = reader.result;\n if (++read == n) {\n pos = clipPos(cm.view.doc, pos);\n operation(cm, function() {\n var end = replaceRange(cm, text.join(\"\"), pos, pos);\n setSelectionUser(cm, pos, end);\n })();\n }\n };\n reader.readAsText(file);\n };\n for (var i = 0; i < n; ++i) loadFile(files[i], i);\n } else {\n // Don't do a replace if the drop happened inside of the selected text.\n if (cm.view.draggingText && !(posLess(pos, cm.view.sel.from) || posLess(cm.view.sel.to, pos))) return;\n try {\n var text = e.dataTransfer.getData(\"Text\");\n if (text) {\n compoundChange(cm, function() {\n var curFrom = cm.view.sel.from, curTo = cm.view.sel.to;\n setSelectionUser(cm, pos, pos);\n if (cm.view.draggingText) replaceRange(cm, \"\", curFrom, curTo);\n cm.replaceSelection(text);\n focusInput(cm);\n });\n }\n }\n catch(e){}\n }\n }\n\n function clickInGutter(e) {\n var cm = this, display = cm.display;\n try { var mX = e.clientX, mY = e.clientY; }\n catch(e) { return false; }\n \n if (mX >= Math.floor(display.gutters.getBoundingClientRect().right)) return false;\n e_preventDefault(e);\n if (!hasHandler(cm, \"gutterClick\")) return true;\n\n var lineBox = display.lineDiv.getBoundingClientRect();\n if (mY > lineBox.bottom) return true;\n mY -= lineBox.top - display.viewOffset;\n\n for (var i = 0; i < cm.options.gutters.length; ++i) {\n var g = display.gutters.childNodes[i];\n if (g && g.getBoundingClientRect().right >= mX) {\n var line = lineAtHeight(cm.view.doc, mY);\n var gutter = cm.options.gutters[i];\n signalLater(cm, cm, \"gutterClick\", cm, line, gutter, e);\n break;\n }\n }\n return true;\n }\n\n function onDragStart(cm, e) {\n var txt = cm.getSelection();\n e.dataTransfer.setData(\"Text\", txt);\n\n // Use dummy image instead of default browsers image.\n if (e.dataTransfer.setDragImage)\n e.dataTransfer.setDragImage(elt('img'), 0, 0);\n }\n\n function doHandleBinding(cm, bound, dropShift) {\n if (typeof bound == \"string\") {\n bound = commands[bound];\n if (!bound) return false;\n }\n var view = cm.view, prevShift = view.sel.shift;\n try {\n if (cm.options.readOnly) view.suppressEdits = true;\n if (dropShift) view.sel.shift = null;\n bound(cm);\n } catch(e) {\n if (e != Pass) throw e;\n return false;\n } finally {\n view.sel.shift = prevShift;\n view.suppressEdits = false;\n }\n return true;\n }\n\n var maybeTransition;\n function handleKeyBinding(cm, e) {\n // Handle auto keymap transitions\n var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto;\n clearTimeout(maybeTransition);\n if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {\n if (getKeyMap(cm.options.keyMap) == startMap)\n cm.options.keyMap = (next.call ? next.call(null, cm) : next);\n }, 50);\n\n var name = keyNames[e_prop(e, \"keyCode\")], handled = false;\n var flipCtrlCmd = opera && mac;\n if (name == null || e.altGraphKey) return false;\n if (e_prop(e, \"altKey\")) name = \"Alt-\" + name;\n if (e_prop(e, flipCtrlCmd ? \"metaKey\" : \"ctrlKey\")) name = \"Ctrl-\" + name;\n if (e_prop(e, flipCtrlCmd ? \"ctrlKey\" : \"metaKey\")) name = \"Cmd-\" + name;\n\n var stopped = false;\n function stop() { stopped = true; }\n\n if (e_prop(e, \"shiftKey\")) {\n handled = lookupKey(\"Shift-\" + name, cm.options.extraKeys, cm.options.keyMap,\n function(b) {return doHandleBinding(cm, b, true);}, stop)\n || lookupKey(name, cm.options.extraKeys, cm.options.keyMap, function(b) {\n if (typeof b == \"string\" && /^go[A-Z]/.test(b)) return doHandleBinding(cm, b);\n }, stop);\n } else {\n handled = lookupKey(name, cm.options.extraKeys, cm.options.keyMap,\n function(b) { return doHandleBinding(cm, b); }, stop);\n }\n if (stopped) handled = false;\n if (handled) {\n e_preventDefault(e);\n restartBlink(cm);\n if (ie) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }\n }\n return handled;\n }\n\n function handleCharBinding(cm, e, ch) {\n var handled = lookupKey(\"'\" + ch + \"'\", cm.options.extraKeys, cm.options.keyMap,\n function(b) { return doHandleBinding(cm, b, true); });\n if (handled) {\n e_preventDefault(e);\n restartBlink(cm);\n }\n return handled;\n }\n\n var lastStoppedKey = null;\n function onKeyDown(e) {\n var cm = this;\n if (!cm.view.focused) onFocus(cm);\n if (ie && e.keyCode == 27) { e.returnValue = false; }\n if (cm.display.pollingFast) { if (readInput(cm)) cm.display.pollingFast = false; }\n if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;\n var code = e_prop(e, \"keyCode\");\n // IE does strange things with escape.\n setShift(cm.view, code == 16 || e_prop(e, \"shiftKey\"));\n // First give onKeyEvent option a chance to handle this.\n var handled = handleKeyBinding(cm, e);\n if (opera) {\n lastStoppedKey = handled ? code : null;\n // Opera has no cut event... we try to at least catch the key combo\n if (!handled && code == 88 && e_prop(e, mac ? \"metaKey\" : \"ctrlKey\"))\n cm.replaceSelection(\"\");\n }\n }\n\n function onKeyPress(e) {\n var cm = this;\n if (cm.display.pollingFast) readInput(cm);\n if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;\n var keyCode = e_prop(e, \"keyCode\"), charCode = e_prop(e, \"charCode\");\n if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}\n if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;\n var ch = String.fromCharCode(charCode == null ? keyCode : charCode);\n if (this.options.electricChars && this.view.doc.mode.electricChars &&\n this.options.smartIndent && !this.options.readOnly &&\n this.view.doc.mode.electricChars.indexOf(ch) > -1)\n setTimeout(operation(cm, function() {indentLine(cm, cm.view.sel.to.line, \"smart\");}), 75);\n if (handleCharBinding(cm, e, ch)) return;\n fastPoll(cm);\n }\n\n function onFocus(cm) {\n if (cm.options.readOnly == \"nocursor\") return;\n if (!cm.view.focused) {\n signal(cm, \"focus\", cm);\n cm.view.focused = true;\n if (cm.display.scroller.className.search(/\\bCodeMirror-focused\\b/) == -1)\n cm.display.scroller.className += \" CodeMirror-focused\";\n }\n slowPoll(cm);\n restartBlink(cm);\n }\n function onBlur(cm) {\n if (cm.view.focused) {\n signal(cm, \"blur\", cm);\n cm.view.focused = false;\n cm.display.scroller.className = cm.display.scroller.className.replace(\" CodeMirror-focused\", \"\");\n }\n clearInterval(cm.display.blinker);\n setTimeout(function() {if (!cm.view.focused) cm.view.sel.shift = null;}, 150);\n }\n\n var detectingSelectAll;\n function onContextMenu(cm, e) {\n var display = cm.display, sel = cm.view.sel;\n var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;\n if (!pos || opera) return; // Opera is difficult.\n if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))\n operation(cm, setSelection)(cm, pos, pos);\n\n var oldCSS = display.input.style.cssText;\n display.inputDiv.style.position = \"absolute\";\n display.input.style.cssText = \"position: fixed; width: 30px; height: 30px; top: \" + (e.clientY - 5) +\n \"px; left: \" + (e.clientX - 5) + \"px; z-index: 1000; background: white; outline: none;\" +\n \"border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);\";\n focusInput(cm);\n resetInput(cm, true);\n // Adds \"Select all\" to context menu in FF\n if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = \" \";\n\n function rehide() {\n display.inputDiv.style.position = \"relative\";\n display.input.style.cssText = oldCSS;\n if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos;\n slowPoll(cm);\n\n // Try to detect the user choosing select-all \n if (display.input.selectionStart != null) {\n clearTimeout(detectingSelectAll);\n var extval = display.input.value = \" \" + (posEq(sel.from, sel.to) ? \"\" : display.input.value), i = 0;\n display.prevInput = \" \";\n display.input.selectionStart = 1; display.input.selectionEnd = extval.length;\n detectingSelectAll = setTimeout(function poll(){\n if (display.prevInput == \" \" && display.input.selectionStart == 0)\n operation(cm, commands.selectAll)(cm);\n else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);\n else resetInput(cm);\n }, 200);\n }\n }\n\n if (gecko) {\n e_stop(e);\n on(window, \"mouseup\", function mouseup() {\n off(window, \"mouseup\", mouseup);\n setTimeout(rehide, 20);\n });\n } else {\n setTimeout(rehide, 50);\n }\n }\n\n // UPDATING\n\n // Replace the range from from to to by the strings in newText.\n // Afterwards, set the selection to selFrom, selTo.\n function updateDoc(cm, from, to, newText, selFrom, selTo) {\n var view = cm.view, doc = view.doc;\n if (view.suppressEdits) return;\n var old = [];\n doc.iter(from.line, to.line + 1, function(line) {\n old.push(newHL(line.text, line.markedSpans));\n });\n if (doc.history) {\n doc.history.addChange(from.line, newText.length, old);\n while (doc.history.done.length > cm.options.undoDepth) doc.history.done.shift();\n }\n var lines = updateMarkedSpans(hlSpans(old[0]), hlSpans(lst(old)), from.ch, to.ch, newText);\n updateDocNoUndo(cm, from, to, lines, selFrom, selTo);\n }\n function unredoHelper(cm, from, to) {\n var doc = cm.view.doc;\n if (!from.length) return;\n var set = from.pop(), out = [];\n for (var i = set.length - 1; i >= 0; i -= 1) {\n var change = set[i];\n var replaced = [], end = change.start + change.added;\n doc.iter(change.start, end, function(line) { replaced.push(newHL(line.text, line.markedSpans)); });\n out.push({start: change.start, added: change.old.length, old: replaced});\n var pos = {line: change.start + change.old.length - 1,\n ch: editEnd(hlText(lst(replaced)), hlText(lst(change.old)))};\n updateDocNoUndo(cm, {line: change.start, ch: 0}, {line: end - 1, ch: getLine(doc, end-1).text.length},\n change.old, pos, pos);\n }\n to.push(out);\n }\n function undo(cm) {\n var hist = cm.view.doc.history;\n unredoHelper(cm, hist.done, hist.undone);\n }\n function redo(cm) {\n var hist = cm.view.doc.history;\n unredoHelper(cm, hist.undone, hist.done);\n }\n\n function updateDocNoUndo(cm, from, to, lines, selFrom, selTo) {\n var view = cm.view, doc = view.doc, display = cm.display;\n if (view.suppressEdits) return;\n var recomputeMaxLength = false, maxLineLength = view.maxLine.text.length;\n if (!cm.options.lineWrapping)\n doc.iter(from.line, to.line + 1, function(line) {\n if (!line.hidden && line.text.length == maxLineLength) {recomputeMaxLength = true; return true;}\n });\n\n var nlines = to.line - from.line, firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);\n var lastHL = lst(lines), th = textHeight(display);\n\n // First adjust the line structure\n if (from.ch == 0 && to.ch == 0 && hlText(lastHL) == \"\") {\n // This is a whole-line replace. Treated specially to make\n // sure line objects move the way they are supposed to.\n var added = [], prevLine = null;\n for (var i = 0, e = lines.length - 1; i < e; ++i)\n added.push(new Line(hlText(lines[i]), hlSpans(lines[i]), th));\n lastLine.update(lastLine.text, hlSpans(lastHL), cm);\n if (nlines) doc.remove(from.line, nlines, cm);\n if (added.length) doc.insert(from.line, added);\n } else if (firstLine == lastLine) {\n if (lines.length == 1) {\n firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]) + firstLine.text.slice(to.ch),\n hlSpans(lines[0]), cm);\n } else {\n for (var added = [], i = 1, e = lines.length - 1; i < e; ++i)\n added.push(new Line(hlText(lines[i]), hlSpans(lines[i]), th));\n added.push(new Line(hlText(lastHL) + firstLine.text.slice(to.ch), hlSpans(lastHL), th));\n firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]), cm);\n doc.insert(from.line + 1, added);\n }\n } else if (lines.length == 1) {\n firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]) + lastLine.text.slice(to.ch),\n hlSpans(lines[0]), cm);\n doc.remove(from.line + 1, nlines, cm);\n } else {\n var added = [];\n firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]), cm);\n lastLine.update(hlText(lastHL) + lastLine.text.slice(to.ch), hlSpans(lastHL), cm);\n for (var i = 1, e = lines.length - 1; i < e; ++i)\n added.push(new Line(hlText(lines[i]), hlSpans(lines[i]), th));\n if (nlines > 1) doc.remove(from.line + 1, nlines - 1, cm);\n doc.insert(from.line + 1, added);\n }\n\n if (cm.options.lineWrapping) {\n var perLine = Math.max(5, display.scroller.clientWidth / charWidth(display) - 3);\n doc.iter(from.line, from.line + lines.length, function(line) {\n if (line.hidden) return;\n var guess = (Math.ceil(line.text.length / perLine) || 1) * th;\n if (guess != line.height) updateLineHeight(line, guess);\n });\n } else {\n doc.iter(from.line, from.line + lines.length, function(line) {\n var l = line.text;\n if (!line.hidden && l.length > maxLineLength) {\n view.maxLine = line; maxLineLength = l.length; view.maxLineChanged = true;\n recomputeMaxLength = false;\n }\n });\n if (recomputeMaxLength) cm.curOp.updateMaxLine = true;\n }\n\n // Adjust frontier, schedule worker\n doc.frontier = Math.min(doc.frontier, from.line);\n startWorker(cm, 400);\n\n var lendiff = lines.length - nlines - 1;\n // Remember that these lines changed, for updating the display\n regChange(cm, from.line, to.line + 1, lendiff);\n if (hasHandler(cm, \"change\")) {\n // Normalize lines to contain only strings, since that's what\n // the change event handler expects\n for (var i = 0; i < lines.length; ++i)\n if (typeof lines[i] != \"string\") lines[i] = lines[i].text;\n var changeObj = {from: from, to: to, text: lines};\n if (cm.curOp.textChanged) {\n for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {}\n cur.next = changeObj;\n } else cm.curOp.textChanged = changeObj;\n }\n\n // Update the selection\n setSelection(cm, clipPos(doc, selFrom), clipPos(doc, selTo), true);\n }\n\n function replaceRange(cm, code, from, to) {\n if (!to) to = from;\n if (posLess(to, from)) { var tmp = to; to = from; from = tmp; }\n code = splitLines(code);\n function adjustPos(pos) {\n if (posLess(pos, from)) return pos;\n if (!posLess(to, pos)) return end;\n var line = pos.line + code.length - (to.line - from.line) - 1;\n var ch = pos.ch;\n if (pos.line == to.line)\n ch += lst(code).length - (to.ch - (to.line == from.line ? from.ch : 0));\n return {line: line, ch: ch};\n }\n var end;\n replaceRange1(cm, code, from, to, function(end1) {\n end = end1;\n return {from: adjustPos(cm.view.sel.from), to: adjustPos(cm.view.sel.to)};\n });\n return end;\n }\n function replaceRange1(cm, code, from, to, computeSel) {\n var endch = code.length == 1 ? code[0].length + from.ch : lst(code).length;\n var newSel = computeSel({line: from.line + code.length - 1, ch: endch});\n updateDoc(cm, from, to, code, newSel.from, newSel.to);\n }\n\n // SELECTION\n\n function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}\n function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}\n function copyPos(x) {return {line: x.line, ch: x.ch};}\n\n function clipLine(doc, n) {return Math.max(0, Math.min(n, doc.size-1));}\n function clipPos(doc, pos) {\n if (pos.line < 0) return {line: 0, ch: 0};\n if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc, doc.size-1).text.length};\n var ch = pos.ch, linelen = getLine(doc, pos.line).text.length;\n if (ch == null || ch > linelen) return {line: pos.line, ch: linelen};\n else if (ch < 0) return {line: pos.line, ch: 0};\n else return pos;\n }\n function isLine(doc, l) {return l >= 0 && l < doc.size;}\n\n function setShift(view, val) {\n if (val) view.sel.shift = view.sel.shift || selHead(view);\n else view.sel.shift = null;\n }\n function setSelectionUser(cm, from, to) {\n var view = cm.view, sh = view.sel.shift;\n if (sh) {\n sh = clipPos(view.doc, sh);\n if (posLess(sh, from)) from = sh;\n else if (posLess(to, sh)) to = sh;\n }\n setSelection(cm, from, to);\n cm.curOp.userSelChange = true;\n }\n\n // Update the selection. Last two args are only used by\n // updateDoc, since they have to be expressed in the line\n // numbers before the update.\n function setSelection(cm, from, to, isChange) {\n cm.curOp.updateInput = true;\n var sel = cm.view.sel, doc = cm.view.doc;\n cm.view.goalColumn = null;\n if (posEq(sel.from, from) && posEq(sel.to, to)) return;\n if (posLess(to, from)) {var tmp = to; to = from; from = tmp;}\n\n // Skip over hidden lines.\n if (isChange || from.line != sel.from.line) {\n var from1 = skipHidden(doc, from, sel.from.line, sel.from.ch, cm);\n // If there is no non-hidden line left, force visibility on current line\n if (!from1) cm.unfoldLines(getLine(doc, from.line).hidden.id);\n else from = from1;\n }\n if (isChange || to.line != sel.to.line) to = skipHidden(doc, to, sel.to.line, sel.to.ch, cm);\n\n if (posEq(from, to)) sel.inverted = false;\n else if (posEq(from, sel.to)) sel.inverted = false;\n else if (posEq(to, sel.from)) sel.inverted = true;\n\n if (cm.options.autoClearEmptyLines && posEq(sel.from, sel.to)) {\n var head = selHead(cm.view);\n if (head.line != sel.from.line && sel.from.line < doc.size) {\n var oldLine = getLine(doc, sel.from.line);\n if (/^\\s+$/.test(oldLine.text))\n setTimeout(operation(cm, function() {\n if (oldLine.parent && /^\\s+$/.test(oldLine.text)) {\n var no = lineNo(oldLine);\n replaceRange(cm, \"\", {line: no, ch: 0}, {line: no, ch: oldLine.text.length});\n }\n }, 10));\n }\n }\n\n sel.from = from; sel.to = to;\n cm.curOp.selectionChanged = true;\n }\n\n function skipHidden(doc, pos, oldLine, oldCh, allowUnfold) {\n function getNonHidden(dir) {\n var lNo = pos.line + dir, end = dir == 1 ? doc.size : -1;\n while (lNo != end) {\n var line = getLine(doc, lNo);\n if (!line.hidden) {\n var ch = pos.ch;\n if (toEnd || ch > oldCh || ch > line.text.length) ch = line.text.length;\n return {line: lNo, ch: ch};\n }\n lNo += dir;\n }\n }\n var line = getLine(doc, pos.line);\n while (allowUnfold && line.hidden && line.hidden.handle.unfoldOnEnter)\n allowUnfold.unfoldLines(line.hidden.handle);\n if (!line.hidden) return pos;\n var toEnd = pos.ch == line.text.length && pos.ch != oldCh;\n if (pos.line >= oldLine) return getNonHidden(1) || getNonHidden(-1);\n else return getNonHidden(-1) || getNonHidden(1);\n }\n\n // SCROLLING\n\n function scrollCursorIntoView(cm) {\n var view = cm.view, coords = cursorCoords(cm, selHead(view));\n scrollIntoView(cm.display, coords.left, coords.top, coords.left, coords.bottom);\n if (!view.focused) return;\n var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;\n if (coords.top + box.top < 0) doScroll = true;\n else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;\n if (doScroll != null) {\n var hidden = display.cursor.style.display == \"none\";\n if (hidden) {\n display.cursor.style.display = \"\";\n display.cursor.style.left = coords.left + \"px\";\n display.cursor.style.top = (coords.top - display.viewOffset) + \"px\";\n }\n display.cursor.scrollIntoView(doScroll);\n if (hidden) display.cursor.style.display = \"none\";\n }\n }\n\n function scrollIntoView(display, x1, y1, x2, y2) {\n var scrollPos = calculateScrollPos(display, x1, y1, x2, y2);\n if (scrollPos.scrollLeft != null) {display.scrollbarH.scrollLeft = display.scroller.scrollLeft = scrollPos.scrollLeft;}\n if (scrollPos.scrollTop != null) {display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos.scrollTop;}\n }\n\n function calculateScrollPos(display, x1, y1, x2, y2) {\n var pt = paddingTop(display);\n y1 += pt; y2 += pt;\n var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {};\n var docBottom = display.scroller.scrollHeight - scrollerCutOff;\n var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10;\n if (y1 < screentop) result.scrollTop = atTop ? 0 : Math.max(0, y1);\n else if (y2 > screentop + screen) result.scrollTop = (atBottom ? docBottom : y2 - screen);\n\n var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft;\n x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth;\n var gutterw = display.gutters.offsetWidth;\n var atLeft = x1 < gutterw + 10;\n if (x1 < screenleft + gutterw || atLeft) {\n if (atLeft) x1 = 0;\n result.scrollLeft = Math.max(0, x1 - 10 - gutterw);\n } else if (x2 > screenw + screenleft - 3) {\n result.scrollLeft = x2 + 10 - screenw;\n }\n return result;\n }\n\n // API UTILITIES\n\n function indentLine(cm, n, how) {\n var doc = cm.view.doc;\n if (!how) how = \"add\";\n if (how == \"smart\") {\n if (!doc.mode.indent) how = \"prev\";\n else var state = getStateBefore(doc, n);\n }\n\n var line = getLine(doc, n), curSpace = line.indentation(doc.tabSize),\n curSpaceString = line.text.match(/^\\s*/)[0], indentation;\n if (how == \"smart\") {\n indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);\n if (indentation == Pass) how = \"prev\";\n }\n if (how == \"prev\") {\n if (n) indentation = getLine(doc, n-1).indentation(doc.tabSize);\n else indentation = 0;\n }\n else if (how == \"add\") indentation = curSpace + cm.options.indentUnit;\n else if (how == \"subtract\") indentation = curSpace - cm.options.indentUnit;\n indentation = Math.max(0, indentation);\n var diff = indentation - curSpace;\n\n var indentString = \"\", pos = 0;\n if (cm.options.indentWithTabs)\n for (var i = Math.floor(indentation / doc.tabSize); i; --i) {pos += doc.tabSize; indentString += \"\\t\";}\n if (pos < indentation) indentString += spaceStr(indentation - pos);\n\n if (indentString != curSpaceString)\n replaceRange(cm, indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length});\n }\n\n function changeLine(cm, handle, op) {\n var no = handle, line = handle, doc = cm.view.doc;\n if (typeof handle == \"number\") line = getLine(doc, clipLine(doc, handle));\n else no = lineNo(handle);\n if (no == null) return null;\n if (op(line, no)) regChange(cm, no, no + 1);\n else return null;\n return line;\n }\n\n function findPosH(cm, dir, unit, visually) {\n var doc = cm.view.doc, end = selHead(cm.view), line = end.line, ch = end.ch;\n var lineObj = getLine(doc, line);\n function findNextLine() {\n for (var l = line + dir, e = dir < 0 ? -1 : doc.size; l != e; l += dir) {\n var lo = getLine(doc, l);\n if (!lo.hidden || !lo.hidden.handle.unfoldOnEneter) { line = l; lineObj = lo; return true; }\n }\n }\n function moveOnce(boundToLine) {\n var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);\n if (next == null) {\n if (!boundToLine && findNextLine()) {\n if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);\n else ch = dir < 0 ? lineObj.text.length : 0;\n } else return false;\n } else ch = next;\n return true;\n }\n if (unit == \"char\") moveOnce();\n else if (unit == \"column\") moveOnce(true);\n else if (unit == \"word\") {\n var sawWord = false;\n for (;;) {\n if (dir < 0) if (!moveOnce()) break;\n if (isWordChar(lineObj.text.charAt(ch))) sawWord = true;\n else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;}\n if (dir > 0) if (!moveOnce()) break;\n }\n }\n return {line: line, ch: ch};\n }\n\n function findWordAt(line, pos) {\n var start = pos.ch, end = pos.ch;\n if (line) {\n if (pos.after === false || end == line.length) --start; else ++end;\n var startChar = line.charAt(start);\n var check = isWordChar(startChar) ? isWordChar :\n /\\s/.test(startChar) ? function(ch) {return /\\s/.test(ch);} :\n function(ch) {return !/\\s/.test(ch) && !isWordChar(ch);};\n while (start > 0 && check(line.charAt(start - 1))) --start;\n while (end < line.length && check(line.charAt(end))) ++end;\n }\n return {from: {line: pos.line, ch: start}, to: {line: pos.line, ch: end}};\n }\n\n function selectLine(cm, line) {\n setSelectionUser(cm, {line: line, ch: 0}, clipPos(cm.view.doc, {line: line + 1, ch: 0}));\n }\n\n // PROTOTYPE\n\n // The publicly visible API. Note that operation(null, f) means\n // 'wrap f in an operation, performed on its `this` parameter'\n\n CodeMirror.prototype = {\n getValue: function(lineSep) {\n var text = [], doc = this.view.doc;\n doc.iter(0, doc.size, function(line) { text.push(line.text); });\n return text.join(lineSep || \"\\n\");\n },\n\n setValue: operation(null, function(code) {\n var doc = this.view.doc, top = {line: 0, ch: 0}, lastLen = getLine(doc, doc.size-1).text.length;\n updateDoc(this, top, {line: doc.size - 1, ch: lastLen}, splitLines(code), top, top);\n }),\n\n getSelection: function(lineSep) { return this.getRange(this.view.sel.from, this.view.sel.to, lineSep); },\n\n replaceSelection: operation(null, function(code, collapse) {\n var sel = this.view.sel;\n replaceRange1(this, splitLines(code), sel.from, sel.to, function(end) {\n if (collapse == \"end\") return {from: end, to: end};\n else if (collapse == \"start\") return {from: sel.from, to: sel.from};\n else return {from: sel.from, to: end};\n });\n }),\n\n focus: function(){window.focus(); focusInput(this); onFocus(this); fastPoll(this);},\n\n setOption: function(option, value) {\n var options = this.options;\n if (options[option] == value && option != \"mode\") return;\n options[option] = value;\n if (option == \"mode\" || option == \"indentUnit\") loadMode(this);\n else if (option == \"readOnly\" && value == \"nocursor\") {onBlur(this); this.display.input.blur();}\n else if (option == \"readOnly\" && !value) {resetInput(this, true);}\n else if (option == \"theme\") themeChanged(this);\n else if (option == \"lineWrapping\") operation(this, wrappingChanged)(this);\n else if (option == \"tabSize\") {this.view.doc.tabSize = value; updateDisplay(this, true);}\n else if (option == \"keyMap\") keyMapChanged(this);\n else if (option == \"gutters\" || option == \"lineNumbers\") setGuttersForLineNumbers(this.options);\n if (option == \"lineNumbers\" || option == \"gutters\" || option == \"firstLineNumber\" ||\n option == \"theme\" || option == \"lineNumberFormatter\")\n guttersChanged(this);\n if (optionHandlers.hasOwnProperty(option))\n optionHandlers[option](this, value);\n },\n\n getOption: function(option) {return this.options[option];},\n\n getMode: function() {return this.view.doc.mode;},\n\n undo: operation(null, function() {\n var hist = this.view.doc.history;\n unredoHelper(this, hist.done, hist.undone);\n }),\n redo: operation(null, function() {\n var hist = this.view.doc.history;\n unredoHelper(this, hist.undone, hist.done);\n }),\n\n indentLine: operation(null, function(n, dir) {\n if (typeof dir != \"string\") {\n if (dir == null) dir = this.options.smartIndent ? \"smart\" : \"prev\";\n else dir = dir ? \"add\" : \"subtract\";\n }\n if (isLine(this.view.doc, n)) indentLine(this, n, dir);\n }),\n\n indentSelection: operation(null, function(how) {\n var sel = this.view.sel;\n if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how);\n var e = sel.to.line - (sel.to.ch ? 0 : 1);\n for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how);\n }),\n\n historySize: function() {\n var hist = this.view.doc.history;\n return {undo: hist.done.length, redo: hist.undone.length};\n },\n\n clearHistory: function() {this.view.doc.history = new History();},\n\n getHistory: function() {\n var hist = this.view.doc.history;\n function cp(arr) {\n for (var i = 0, nw = [], nwelt; i < arr.length; ++i) {\n nw.push(nwelt = []);\n for (var j = 0, elt = arr[i]; j < elt.length; ++j) {\n var old = [], cur = elt[j];\n nwelt.push({start: cur.start, added: cur.added, old: old});\n for (var k = 0; k < cur.old.length; ++k) old.push(hlText(cur.old[k]));\n }\n }\n return nw;\n }\n return {done: cp(hist.done), undone: cp(hist.undone)};\n },\n\n setHistory: function(histData) {\n var hist = this.view.doc.history = new History();\n hist.done = histData.done;\n hist.undone = histData.undone;\n },\n\n getTokenAt: function(pos) {\n var doc = this.view.doc;\n pos = clipPos(doc, pos);\n return getLine(doc, pos.line).getTokenAt(doc.mode, getStateBefore(doc, pos.line),\n this.options.tabSize, pos.ch);\n },\n\n getStateAfter: function(line) {\n var doc = this.view.doc;\n line = clipLine(doc, line == null ? doc.size - 1: line);\n return getStateBefore(doc, line + 1);\n },\n\n cursorCoords: function(start, mode) {\n var pos, sel = this.view.sel;\n if (start == null) start = sel.inverted;\n if (typeof start == \"object\") pos = clipPos(this.view.doc, start);\n else pos = start ? sel.from : sel.to;\n return cursorCoords(this, pos, mode || \"page\");\n },\n\n charCoords: function(pos, mode) {\n return charCoords(this, clipPos(this.view.doc, pos), mode || \"page\");\n },\n\n coordsChar: function(coords) {\n var off = this.display.lineSpace.getBoundingClientRect();\n return coordsChar(this, coords.left - off.left, coords.top - off.top);\n },\n\n markText: operation(null, function(from, to, className, options) {\n var doc = this.view.doc;\n from = clipPos(doc, from); to = clipPos(doc, to);\n var marker = new TextMarker(this, \"range\", className);\n if (options) for (var opt in options) if (options.hasOwnProperty(opt))\n marker[opt] = options[opt];\n var curLine = from.line;\n doc.iter(curLine, to.line + 1, function(line) {\n var span = {from: curLine == from.line ? from.ch : null,\n to: curLine == to.line ? to.ch : null,\n marker: marker};\n (line.markedSpans || (line.markedSpans = [])).push(span);\n marker.lines.push(line);\n ++curLine;\n });\n regChange(this, from.line, to.line + 1);\n return marker;\n }),\n\n setBookmark: function(pos) {\n var doc = this.view.doc;\n pos = clipPos(doc, pos);\n var marker = new TextMarker(this, \"bookmark\"), line = getLine(doc, pos.line);\n var span = {from: pos.ch, to: pos.ch, marker: marker};\n (line.markedSpans || (line.markedSpans = [])).push(span);\n marker.lines.push(line);\n return marker;\n },\n\n findMarksAt: function(pos) {\n var doc = this.view.doc;\n pos = clipPos(doc, pos);\n var markers = [], spans = getLine(doc, pos.line).markedSpans;\n if (spans) for (var i = 0; i < spans.length; ++i) {\n var span = spans[i];\n if ((span.from == null || span.from <= pos.ch) &&\n (span.to == null || span.to >= pos.ch))\n markers.push(span.marker);\n }\n return markers;\n },\n\n setGutterMarker: operation(null, function(line, gutterID, value) {\n return changeLine(this, line, function(line) {\n var markers = line.gutterMarkers || (line.gutterMarkers = {});\n markers[gutterID] = value;\n if (!value && isEmpty(markers)) line.gutterMarkers = null;\n return true;\n });\n }),\n\n clearGutter: operation(null, function(gutterID) {\n var i = 0, cm = this, doc = cm.view.doc;\n doc.iter(0, doc.size, function(line) {\n if (line.gutterMarkers && line.gutterMarkers[gutterID]) {\n line.gutterMarkers[gutterID] = null;\n regChange(cm, i, i + 1);\n if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;\n }\n ++i;\n });\n }),\n\n setLineClass: operation(null, function(handle, className, bgClassName) {\n return changeLine(this, handle, function(line) {\n if (line.className != className || line.bgClassName != bgClassName) {\n line.className = className;\n line.bgClassName = bgClassName;\n return true;\n }\n });\n }),\n\n addLineWidget: operation(null, function addLineWidget(handle, node, options) {\n var widget = options || {};\n widget.node = node;\n if (widget.noHScroll) this.display.alignWidgets = true;\n changeLine(this, handle, function(line) {\n (line.widgets || (line.widgets = [])).push(widget);\n widget.line = line;\n return true;\n });\n return widget;\n }),\n\n removeLineWidget: operation(null, function(widget) {\n var ws = widget.line.widgets, no = lineNo(widget.line);\n if (no == null) return;\n for (var i = 0; i < ws.length; ++i) if (ws[i] == widget) ws.splice(i--, 1);\n regChange(this, no, no + 1);\n }),\n\n foldLines: operation(null, function(from, to, unfoldOnEnter) {\n if (typeof from != \"number\") from = lineNo(from);\n if (typeof to != \"number\") to = lineNo(to);\n if (from > to) return;\n var lines = [], handle = {lines: lines, unfoldOnEnter: unfoldOnEnter}, cm = this, view = cm.view, doc = view.doc;\n doc.iter(from, to, function(line) {\n lines.push(line);\n if (!line.hidden && line.text.length == cm.view.maxLine.text.length)\n cm.curOp.updateMaxLine = true;\n line.hidden = {handle: handle, prev: line.hidden};\n updateLineHeight(line, 0);\n });\n var sel = view.sel, selFrom = sel.from, selTo = sel.to;\n if (selFrom.line >= from && selFrom.line < to)\n selFrom = skipHidden(doc, {line: selFrom.line, ch: 0}, selFrom.line, 0);\n if (selTo.line >= from && selTo.line < to)\n selTo = skipHidden(doc, {line: selTo.line, ch: 0}, selTo.line, 0);\n if (selFrom != sel.from || selTo != sel.to) setSelection(this, selFrom, selTo);\n regChange(cm, from, to);\n return handle;\n }),\n\n unfoldLines: operation(null, function(handle) {\n var from, to;\n for (var i = 0; i < handle.lines.length; ++i) {\n var line = handle.lines[i], hidden = line.hidden;\n if (!line.parent) continue;\n if (hidden && hidden.handle == handle) line.hidden = line.hidden.prev;\n else for (var h = hidden; h; h = h.prev) if (h.prev && h.prev.handle == handle) h.prev = h.prev.prev;\n if (hidden && !line.hidden) {\n var no = lineNo(handle);\n from = Math.min(from, no); to = Math.max(to, no);\n updateLineHeight(line, textHeight(this.display));\n if (line.text.length > this.view.maxLine.text.length) {\n this.view.maxLine = line;\n this.view.maxLineChanged = true;\n }\n }\n }\n if (from != null) {\n regChange(this, from, to + 1);\n signalLater(this, handle, \"unfold\");\n }\n }),\n\n lineInfo: function(line) {\n if (typeof line == \"number\") {\n if (!isLine(this.view.doc, line)) return null;\n var n = line;\n line = getLine(this.view.doc, line);\n if (!line) return null;\n } else {\n var n = lineNo(line);\n if (n == null) return null;\n }\n return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,\n lineClass: line.className, bgClass: line.bgClassName, widgets: line.widgets};\n },\n\n getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};},\n\n addWidget: function(pos, node, scroll, vert, horiz) {\n var display = this.display;\n pos = cursorCoords(this, clipPos(this.view.doc, pos));\n var top = pos.top, left = pos.left;\n node.style.position = \"absolute\";\n display.sizer.appendChild(node);\n if (vert == \"over\") top = pos.top;\n else if (vert == \"near\") {\n var vspace = Math.max(display.wrapper.clientHeight, this.view.doc.height),\n hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);\n if (pos.bottom + node.offsetHeight > vspace && pos.top > node.offsetHeight)\n top = pos.top - node.offsetHeight;\n if (left + node.offsetWidth > hspace)\n left = hspace - node.offsetWidth;\n }\n node.style.top = (top + paddingTop(display)) + \"px\";\n node.style.left = node.style.right = \"\";\n if (horiz == \"right\") {\n left = display.sizer.clientWidth - node.offsetWidth;\n node.style.right = \"0px\";\n } else {\n if (horiz == \"left\") left = 0;\n else if (horiz == \"middle\") left = (display.sizer.clientWidth - node.offsetWidth) / 2;\n node.style.left = left + \"px\";\n }\n if (scroll)\n scrollIntoView(display, left, top, left + node.offsetWidth, top + node.offsetHeight);\n },\n\n lineCount: function() {return this.view.doc.size;},\n\n clipPos: function(pos) {return clipPos(this.view.doc, pos);},\n\n getCursor: function(start) {\n var sel = this.view.sel;\n if (start == null) start = sel.inverted;\n return copyPos(start ? sel.from : sel.to);\n },\n\n somethingSelected: function() {return !posEq(this.view.sel.from, this.view.sel.to);},\n\n setCursor: operation(null, function(line, ch, user) {\n var pos = typeof line == \"number\" ? {line: line, ch: ch || 0} : line;\n (user ? setSelectionUser : setSelection)(this, pos, pos);\n }),\n\n setSelection: operation(null, function(from, to, user) {\n var doc = this.view.doc;\n (user ? setSelectionUser : setSelection)(this, clipPos(doc, from), clipPos(doc, to || from));\n }),\n\n getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},\n\n getLineHandle: function(line) {\n var doc = this.view.doc;\n if (isLine(doc, line)) return getLine(doc, line);\n },\n\n getLineNumber: function(line) {return lineNo(line);},\n\n setLine: operation(null, function(line, text) {\n if (isLine(this.view.doc, line))\n replaceRange(this, text, {line: line, ch: 0}, {line: line, ch: getLine(this.view.doc, line).text.length});\n }),\n\n removeLine: operation(null, function(line) {\n if (isLine(this.view.doc, line))\n replaceRange(this, \"\", {line: line, ch: 0}, clipPos(this.view.doc, {line: line+1, ch: 0}));\n }),\n\n replaceRange: operation(null, function(code, from, to) {\n var doc = this.view.doc;\n from = clipPos(doc, from);\n to = to ? clipPos(doc, to) : from;\n return replaceRange(this, code, from, to);\n }),\n\n getRange: function(from, to, lineSep) {\n var doc = this.view.doc;\n from = clipPos(doc, from); to = clipPos(doc, to);\n var l1 = from.line, l2 = to.line;\n if (l1 == l2) return getLine(doc, l1).text.slice(from.ch, to.ch);\n var code = [getLine(doc, l1).text.slice(from.ch)];\n doc.iter(l1 + 1, l2, function(line) { code.push(line.text); });\n code.push(getLine(doc, l2).text.slice(0, to.ch));\n return code.join(lineSep || \"\\n\");\n },\n\n triggerOnKeyDown: operation(null, onKeyDown),\n\n execCommand: function(cmd) {return commands[cmd](this);},\n\n // Stuff used by commands, probably not much use to outside code.\n moveH: operation(null, function(dir, unit) {\n var sel = this.view.sel, pos = dir < 0 ? sel.from : sel.to;\n if (sel.shift || posEq(sel.from, sel.to)) pos = findPosH(this, dir, unit, true);\n setSelectionUser(this, pos, pos);\n }),\n\n deleteH: operation(null, function(dir, unit) {\n var sel = this.view.sel;\n if (!posEq(sel.from, sel.to)) replaceRange(this, \"\", sel.from, sel.to);\n else replaceRange(this, \"\", sel.from, findPosH(this, dir, unit, false));\n this.curOp.userSelChange = true;\n }),\n\n moveV: operation(null, function(dir, unit) {\n var view = this.view, doc = view.doc, display = this.display;\n var dist = 0, cur = selHead(view), pos = cursorCoords(this, cur, \"div\");\n var x = pos.left, y;\n if (view.goalColumn != null) x = view.goalColumn;\n if (unit == \"page\") {\n var pageSize = Math.min(display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);\n y = pos.top + dir * pageSize;\n } else if (unit == \"line\") {\n y = dir > 0 ? pos.bottom + 3 : pos.top - 3;\n }\n var target = coordsChar(this, x, y), line;\n // Work around problem with moving 'through' line widgets\n if (dir > 0 && target.line == cur.line && cur.line < doc.size - 1 && getLine(doc, cur.line).widgets &&\n Math.abs(cursorCoords(this, target, \"div\").top - pos.top) < 2)\n target = coordsChar(this, x, cursorCoords(this, {line: cur.line + 1, ch: 0}, \"div\").top + 3);\n else if (dir < 0 && cur.line > 0 && (line = getLine(doc, target.line)).widgets && target.ch == line.text.length)\n target = coordsChar(this, x, cursorCoords(this, {line: target.line, ch: line.text.length}, \"div\").bottom - 3);\n \n if (unit == \"page\") display.scrollbarV.scrollTop += charCoords(this, target, \"div\").top - pos.top;\n setSelectionUser(this, target, target);\n view.goalColumn = x;\n }),\n\n toggleOverwrite: function() {\n if (this.view.overwrite = !this.view.overwrite)\n this.display.cursor.className += \" CodeMirror-overwrite\";\n else\n this.display.cursor.className = this.display.cursor.className.replace(\" CodeMirror-overwrite\", \"\");\n },\n\n posFromIndex: function(off) {\n var lineNo = 0, ch, doc = this.view.doc;\n doc.iter(0, doc.size, function(line) {\n var sz = line.text.length + 1;\n if (sz > off) { ch = off; return true; }\n off -= sz;\n ++lineNo;\n });\n return clipPos(doc, {line: lineNo, ch: ch});\n },\n indexFromPos: function (coords) {\n if (coords.line < 0 || coords.ch < 0) return 0;\n var index = coords.ch;\n this.view.doc.iter(0, coords.line, function (line) {\n index += line.text.length + 1;\n });\n return index;\n },\n\n scrollTo: function(x, y) {\n if (x != null) this.display.scrollbarH.scrollLeft = this.display.scroller.scrollLeft = x;\n if (y != null) this.display.scrollbarV.scrollTop = this.display.scroller.scrollTop = y;\n updateDisplay(this, []);\n },\n getScrollInfo: function() {\n var scroller = this.display.scroller, co = scrollerCutOff;\n return {left: scroller.scrollLeft, top: scroller.scrollTop,\n height: scroller.scrollHeight - co, width: scroller.scrollWidth - co,\n clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co};\n },\n\n setSize: function(width, height) {\n function interpret(val) {\n val = String(val);\n return /^\\d+$/.test(val) ? val + \"px\" : val;\n }\n if (width != null) this.display.wrapper.style.width = interpret(width);\n if (height != null) this.display.wrapper.style.height = interpret(height);\n this.refresh();\n },\n\n on: function(type, f) {on(this, type, f);},\n off: function(type, f) {off(this, type, f);},\n\n operation: function(f){return operation(this, f)();},\n compoundChange: function(f){return compoundChange(this, f);},\n\n refresh: function(){\n updateDisplay(this, true, this.view.scrollTop);\n if (this.display.scrollbarV.scrollHeight > this.view.scrollTop)\n this.display.scrollbarV.scrollTop = this.view.scrollTop;\n },\n\n getInputField: function(){return this.display.input;},\n getWrapperElement: function(){return this.display.wrapper;},\n getScrollerElement: function(){return this.display.scroller;},\n getGutterElement: function(){return this.display.gutters;}\n };\n\n // OPTION DEFAULTS\n\n // The default configuration options.\n var defaults = CodeMirror.defaults = {\n value: \"\",\n mode: null,\n theme: \"default\",\n indentUnit: 2,\n indentWithTabs: false,\n smartIndent: true,\n tabSize: 4,\n keyMap: \"default\",\n extraKeys: null,\n electricChars: true,\n autoClearEmptyLines: false,\n onKeyEvent: null,\n onDragEvent: null,\n lineWrapping: false,\n lineNumbers: false,\n gutters: [],\n fixedGutter: false,\n firstLineNumber: 1,\n readOnly: false,\n dragDrop: true,\n cursorBlinkRate: 530,\n workTime: 100,\n workDelay: 200,\n pollInterval: 100,\n undoDepth: 40,\n tabindex: null,\n autofocus: null,\n lineNumberFormatter: function(integer) { return integer; }\n };\n\n // MODE DEFINITION AND QUERYING\n\n // Known modes, by name and by MIME\n var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};\n\n CodeMirror.defineMode = function(name, mode) {\n if (!CodeMirror.defaults.mode && name != \"null\") CodeMirror.defaults.mode = name;\n if (arguments.length > 2) {\n mode.dependencies = [];\n for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);\n }\n modes[name] = mode;\n };\n\n CodeMirror.defineMIME = function(mime, spec) {\n mimeModes[mime] = spec;\n };\n\n CodeMirror.resolveMode = function(spec) {\n if (typeof spec == \"string\" && mimeModes.hasOwnProperty(spec))\n spec = mimeModes[spec];\n else if (typeof spec == \"string\" && /^[\\w\\-]+\\/[\\w\\-]+\\+xml$/.test(spec))\n return CodeMirror.resolveMode(\"application/xml\");\n if (typeof spec == \"string\") return {name: spec};\n else return spec || {name: \"null\"};\n };\n\n CodeMirror.getMode = function(options, spec) {\n var spec = CodeMirror.resolveMode(spec);\n var mfactory = modes[spec.name];\n if (!mfactory) return CodeMirror.getMode(options, \"text/plain\");\n var modeObj = mfactory(options, spec);\n if (modeExtensions.hasOwnProperty(spec.name)) {\n var exts = modeExtensions[spec.name];\n for (var prop in exts) if (exts.hasOwnProperty(prop)) modeObj[prop] = exts[prop];\n }\n modeObj.name = spec.name;\n return modeObj;\n };\n\n CodeMirror.defineMode(\"null\", function() {\n return {token: function(stream) {stream.skipToEnd();}};\n });\n CodeMirror.defineMIME(\"text/plain\", \"null\");\n\n var modeExtensions = CodeMirror.modeExtensions = {};\n CodeMirror.extendMode = function(mode, properties) {\n var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});\n for (var prop in properties) if (properties.hasOwnProperty(prop))\n exts[prop] = properties[prop];\n };\n\n // EXTENSIONS\n\n CodeMirror.defineExtension = function(name, func) {\n CodeMirror.prototype[name] = func;\n };\n var optionHandlers = CodeMirror.optionHandlers = {};\n CodeMirror.defineOption = function(name, deflt, handler) {\n CodeMirror.defaults[name] = deflt;\n optionHandlers[name] = handler;\n };\n\n // MODE STATE HANDLING\n\n // Utility functions for working with state. Exported because modes\n // sometimes need to do this.\n function copyState(mode, state) {\n if (state === true) return state;\n if (mode.copyState) return mode.copyState(state);\n var nstate = {};\n for (var n in state) {\n var val = state[n];\n if (val instanceof Array) val = val.concat([]);\n nstate[n] = val;\n }\n return nstate;\n }\n CodeMirror.copyState = copyState;\n\n function startState(mode, a1, a2) {\n return mode.startState ? mode.startState(a1, a2) : true;\n }\n CodeMirror.startState = startState;\n\n CodeMirror.innerMode = function(mode, state) {\n while (mode.innerMode) {\n var info = mode.innerMode(state);\n state = info.state;\n mode = info.mode;\n }\n return info || {mode: mode, state: state};\n };\n\n // STANDARD COMMANDS\n\n var commands = CodeMirror.commands = {\n selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});},\n killLine: function(cm) {\n var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);\n if (!sel && cm.getLine(from.line).length == from.ch)\n cm.replaceRange(\"\", from, {line: from.line + 1, ch: 0});\n else cm.replaceRange(\"\", from, sel ? to : {line: from.line});\n },\n deleteLine: function(cm) {var l = cm.getCursor().line; cm.replaceRange(\"\", {line: l, ch: 0}, {line: l});},\n undo: function(cm) {cm.undo();},\n redo: function(cm) {cm.redo();},\n goDocStart: function(cm) {cm.setCursor(0, 0, true);},\n goDocEnd: function(cm) {cm.setSelection({line: cm.lineCount() - 1}, null, true);},\n goLineStart: function(cm) {\n var line = cm.getCursor().line;\n cm.setCursor(line, lineStart(cm.getLineHandle(line)), true);\n },\n goLineStartSmart: function(cm) {\n var cur = cm.getCursor(), line = cm.getLineHandle(cur.line), order = getOrder(line);\n if (!order || order[0].level == 0) {\n var firstNonWS = Math.max(0, line.text.search(/\\S/));\n cm.setCursor(cur.line, cur.ch <= firstNonWS && cur.ch ? 0 : firstNonWS, true);\n } else cm.setCursor(cur.line, lineStart(line), true);\n },\n goLineEnd: function(cm) {\n var line = cm.getCursor().line;\n cm.setCursor(line, lineEnd(cm.getLineHandle(line)), true);\n },\n goLineUp: function(cm) {cm.moveV(-1, \"line\");},\n goLineDown: function(cm) {cm.moveV(1, \"line\");},\n goPageUp: function(cm) {cm.moveV(-1, \"page\");},\n goPageDown: function(cm) {cm.moveV(1, \"page\");},\n goCharLeft: function(cm) {cm.moveH(-1, \"char\");},\n goCharRight: function(cm) {cm.moveH(1, \"char\");},\n goColumnLeft: function(cm) {cm.moveH(-1, \"column\");},\n goColumnRight: function(cm) {cm.moveH(1, \"column\");},\n goWordLeft: function(cm) {cm.moveH(-1, \"word\");},\n goWordRight: function(cm) {cm.moveH(1, \"word\");},\n delCharBefore: function(cm) {cm.deleteH(-1, \"char\");},\n delCharAfter: function(cm) {cm.deleteH(1, \"char\");},\n delWordBefore: function(cm) {cm.deleteH(-1, \"word\");},\n delWordAfter: function(cm) {cm.deleteH(1, \"word\");},\n indentAuto: function(cm) {cm.indentSelection(\"smart\");},\n indentMore: function(cm) {cm.indentSelection(\"add\");},\n indentLess: function(cm) {cm.indentSelection(\"subtract\");},\n insertTab: function(cm) {cm.replaceSelection(\"\\t\", \"end\");},\n defaultTab: function(cm) {\n if (cm.somethingSelected()) cm.indentSelection(\"add\");\n else cm.replaceSelection(\"\\t\", \"end\");\n },\n transposeChars: function(cm) {\n var cur = cm.getCursor(), line = cm.getLine(cur.line);\n if (cur.ch > 0 && cur.ch < line.length - 1)\n cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),\n {line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1});\n },\n newlineAndIndent: function(cm) {\n cm.replaceSelection(\"\\n\", \"end\");\n cm.indentLine(cm.getCursor().line);\n },\n toggleOverwrite: function(cm) {cm.toggleOverwrite();}\n };\n\n // STANDARD KEYMAPS\n\n var keyMap = CodeMirror.keyMap = {};\n keyMap.basic = {\n \"Left\": \"goCharLeft\", \"Right\": \"goCharRight\", \"Up\": \"goLineUp\", \"Down\": \"goLineDown\",\n \"End\": \"goLineEnd\", \"Home\": \"goLineStartSmart\", \"PageUp\": \"goPageUp\", \"PageDown\": \"goPageDown\",\n \"Delete\": \"delCharAfter\", \"Backspace\": \"delCharBefore\", \"Tab\": \"defaultTab\", \"Shift-Tab\": \"indentAuto\",\n \"Enter\": \"newlineAndIndent\", \"Insert\": \"toggleOverwrite\"\n };\n // Note that the save and find-related commands aren't defined by\n // default. Unknown commands are simply ignored.\n keyMap.pcDefault = {\n \"Ctrl-A\": \"selectAll\", \"Ctrl-D\": \"deleteLine\", \"Ctrl-Z\": \"undo\", \"Shift-Ctrl-Z\": \"redo\", \"Ctrl-Y\": \"redo\",\n \"Ctrl-Home\": \"goDocStart\", \"Alt-Up\": \"goDocStart\", \"Ctrl-End\": \"goDocEnd\", \"Ctrl-Down\": \"goDocEnd\",\n \"Ctrl-Left\": \"goWordLeft\", \"Ctrl-Right\": \"goWordRight\", \"Alt-Left\": \"goLineStart\", \"Alt-Right\": \"goLineEnd\",\n \"Ctrl-Backspace\": \"delWordBefore\", \"Ctrl-Delete\": \"delWordAfter\", \"Ctrl-S\": \"save\", \"Ctrl-F\": \"find\",\n \"Ctrl-G\": \"findNext\", \"Shift-Ctrl-G\": \"findPrev\", \"Shift-Ctrl-F\": \"replace\", \"Shift-Ctrl-R\": \"replaceAll\",\n \"Ctrl-[\": \"indentLess\", \"Ctrl-]\": \"indentMore\",\n fallthrough: \"basic\"\n };\n keyMap.macDefault = {\n \"Cmd-A\": \"selectAll\", \"Cmd-D\": \"deleteLine\", \"Cmd-Z\": \"undo\", \"Shift-Cmd-Z\": \"redo\", \"Cmd-Y\": \"redo\",\n \"Cmd-Up\": \"goDocStart\", \"Cmd-End\": \"goDocEnd\", \"Cmd-Down\": \"goDocEnd\", \"Alt-Left\": \"goWordLeft\",\n \"Alt-Right\": \"goWordRight\", \"Cmd-Left\": \"goLineStart\", \"Cmd-Right\": \"goLineEnd\", \"Alt-Backspace\": \"delWordBefore\",\n \"Ctrl-Alt-Backspace\": \"delWordAfter\", \"Alt-Delete\": \"delWordAfter\", \"Cmd-S\": \"save\", \"Cmd-F\": \"find\",\n \"Cmd-G\": \"findNext\", \"Shift-Cmd-G\": \"findPrev\", \"Cmd-Alt-F\": \"replace\", \"Shift-Cmd-Alt-F\": \"replaceAll\",\n \"Cmd-[\": \"indentLess\", \"Cmd-]\": \"indentMore\",\n fallthrough: [\"basic\", \"emacsy\"]\n };\n keyMap[\"default\"] = mac ? keyMap.macDefault : keyMap.pcDefault;\n keyMap.emacsy = {\n \"Ctrl-F\": \"goCharRight\", \"Ctrl-B\": \"goCharLeft\", \"Ctrl-P\": \"goLineUp\", \"Ctrl-N\": \"goLineDown\",\n \"Alt-F\": \"goWordRight\", \"Alt-B\": \"goWordLeft\", \"Ctrl-A\": \"goLineStart\", \"Ctrl-E\": \"goLineEnd\",\n \"Ctrl-V\": \"goPageUp\", \"Shift-Ctrl-V\": \"goPageDown\", \"Ctrl-D\": \"delCharAfter\", \"Ctrl-H\": \"delCharBefore\",\n \"Alt-D\": \"delWordAfter\", \"Alt-Backspace\": \"delWordBefore\", \"Ctrl-K\": \"killLine\", \"Ctrl-T\": \"transposeChars\"\n };\n\n // KEYMAP DISPATCH\n\n function getKeyMap(val) {\n if (typeof val == \"string\") return keyMap[val];\n else return val;\n }\n\n function lookupKey(name, extraMap, map, handle, stop) {\n function lookup(map) {\n map = getKeyMap(map);\n var found = map[name];\n if (found === false) {\n if (stop) stop();\n return true;\n }\n if (found != null && handle(found)) return true;\n if (map.nofallthrough) {\n if (stop) stop();\n return true;\n }\n var fallthrough = map.fallthrough;\n if (fallthrough == null) return false;\n if (Object.prototype.toString.call(fallthrough) != \"[object Array]\")\n return lookup(fallthrough);\n for (var i = 0, e = fallthrough.length; i < e; ++i) {\n if (lookup(fallthrough[i])) return true;\n }\n return false;\n }\n if (extraMap && lookup(extraMap)) return true;\n return lookup(map);\n }\n function isModifierKey(event) {\n var name = keyNames[e_prop(event, \"keyCode\")];\n return name == \"Ctrl\" || name == \"Alt\" || name == \"Shift\" || name == \"Mod\";\n }\n\n // FROMTEXTAREA\n\n CodeMirror.fromTextArea = function(textarea, options) {\n if (!options) options = {};\n options.value = textarea.value;\n if (!options.tabindex && textarea.tabindex)\n options.tabindex = textarea.tabindex;\n // Set autofocus to true if this textarea is focused, or if it has\n // autofocus and no other element is focused.\n if (options.autofocus == null) {\n var hasFocus = document.body;\n // doc.activeElement occasionally throws on IE\n try { hasFocus = document.activeElement; } catch(e) {}\n options.autofocus = hasFocus == textarea ||\n textarea.getAttribute(\"autofocus\") != null && hasFocus == document.body;\n }\n\n function save() {textarea.value = cm.getValue();}\n if (textarea.form) {\n // Deplorable hack to make the submit method do the right thing.\n on(textarea.form, \"submit\", save);\n if (typeof textarea.form.submit == \"function\") {\n var realSubmit = textarea.form.submit;\n textarea.form.submit = function wrappedSubmit() {\n save();\n textarea.form.submit = realSubmit;\n textarea.form.submit();\n textarea.form.submit = wrappedSubmit;\n };\n }\n }\n\n textarea.style.display = \"none\";\n var cm = CodeMirror(function(node) {\n textarea.parentNode.insertBefore(node, textarea.nextSibling);\n }, options);\n cm.save = save;\n cm.getTextArea = function() { return textarea; };\n cm.toTextArea = function() {\n save();\n textarea.parentNode.removeChild(cm.getWrapperElement());\n textarea.style.display = \"\";\n if (textarea.form) {\n off(textarea.form, \"submit\", save);\n if (typeof textarea.form.submit == \"function\")\n textarea.form.submit = realSubmit;\n }\n };\n return cm;\n };\n\n // STRING STREAM\n\n // Fed to the mode parsers, provides helper functions to make\n // parsers more succinct.\n\n // The character stream used by a mode's parser.\n function StringStream(string, tabSize) {\n this.pos = this.start = 0;\n this.string = string;\n this.tabSize = tabSize || 8;\n }\n\n StringStream.prototype = {\n eol: function() {return this.pos >= this.string.length;},\n sol: function() {return this.pos == 0;},\n peek: function() {return this.string.charAt(this.pos) || undefined;},\n next: function() {\n if (this.pos < this.string.length)\n return this.string.charAt(this.pos++);\n },\n eat: function(match) {\n var ch = this.string.charAt(this.pos);\n if (typeof match == \"string\") var ok = ch == match;\n else var ok = ch && (match.test ? match.test(ch) : match(ch));\n if (ok) {++this.pos; return ch;}\n },\n eatWhile: function(match) {\n var start = this.pos;\n while (this.eat(match)){}\n return this.pos > start;\n },\n eatSpace: function() {\n var start = this.pos;\n while (/[\\s\\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;\n return this.pos > start;\n },\n skipToEnd: function() {this.pos = this.string.length;},\n skipTo: function(ch) {\n var found = this.string.indexOf(ch, this.pos);\n if (found > -1) {this.pos = found; return true;}\n },\n backUp: function(n) {this.pos -= n;},\n column: function() {return countColumn(this.string, this.start, this.tabSize);},\n indentation: function() {return countColumn(this.string, null, this.tabSize);},\n match: function(pattern, consume, caseInsensitive) {\n if (typeof pattern == \"string\") {\n var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};\n if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {\n if (consume !== false) this.pos += pattern.length;\n return true;\n }\n } else {\n var match = this.string.slice(this.pos).match(pattern);\n if (match && match.index > 0) return null;\n if (match && consume !== false) this.pos += match[0].length;\n return match;\n }\n },\n current: function(){return this.string.slice(this.start, this.pos);}\n };\n CodeMirror.StringStream = StringStream;\n\n // TEXTMARKERS\n\n function TextMarker(cm, type, style) {\n this.lines = [];\n this.type = type;\n this.cm = cm;\n if (style) this.style = style;\n }\n\n TextMarker.prototype.clear = function() {\n startOperation(this.cm);\n var min = Infinity, max = -Infinity;\n for (var i = 0; i < this.lines.length; ++i) {\n var line = this.lines[i];\n var span = getMarkedSpanFor(line.markedSpans, this, true);\n if (span.from != null || span.to != null) {\n var lineN = lineNo(line);\n min = Math.min(min, lineN); max = Math.max(max, lineN);\n }\n }\n if (min != Infinity) regChange(this.cm, min, max + 1);\n this.lines.length = 0;\n endOperation(this.cm);\n };\n\n TextMarker.prototype.find = function() {\n var from, to;\n for (var i = 0; i < this.lines.length; ++i) {\n var line = this.lines[i];\n var span = getMarkedSpanFor(line.markedSpans, this);\n if (span.from != null || span.to != null) {\n var found = lineNo(line);\n if (span.from != null) from = {line: found, ch: span.from};\n if (span.to != null) to = {line: found, ch: span.to};\n }\n }\n if (this.type == \"bookmark\") return from;\n return from && {from: from, to: to};\n };\n\n // TEXTMARKER SPANS\n\n function getMarkedSpanFor(spans, marker, del) {\n if (spans) for (var i = 0; i < spans.length; ++i) {\n var span = spans[i];\n if (span.marker == marker) {\n if (del) spans.splice(i, 1);\n return span;\n }\n }\n }\n\n function markedSpansBefore(old, startCh, endCh) {\n if (old) for (var i = 0, nw; i < old.length; ++i) {\n var span = old[i], marker = span.marker;\n var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);\n if (startsBefore || marker.type == \"bookmark\" && span.from == startCh && span.from != endCh) {\n var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);\n (nw || (nw = [])).push({from: span.from,\n to: endsAfter ? null : span.to,\n marker: marker});\n }\n }\n return nw;\n }\n\n function markedSpansAfter(old, endCh) {\n if (old) for (var i = 0, nw; i < old.length; ++i) {\n var span = old[i], marker = span.marker;\n var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);\n if (endsAfter || marker.type == \"bookmark\" && span.from == endCh) {\n var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);\n (nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh,\n to: span.to == null ? null : span.to - endCh,\n marker: marker});\n }\n }\n return nw;\n }\n\n function updateMarkedSpans(oldFirst, oldLast, startCh, endCh, newText) {\n if (!oldFirst && !oldLast) return newText;\n // Get the spans that 'stick out' on both sides\n var first = markedSpansBefore(oldFirst, startCh);\n var last = markedSpansAfter(oldLast, endCh);\n\n // Next, merge those two ends\n var sameLine = newText.length == 1, offset = lst(newText).length + (sameLine ? startCh : 0);\n if (first) {\n // Fix up .to properties of first\n for (var i = 0; i < first.length; ++i) {\n var span = first[i];\n if (span.to == null) {\n var found = getMarkedSpanFor(last, span.marker);\n if (!found) span.to = startCh;\n else if (sameLine) span.to = found.to == null ? null : found.to + offset;\n }\n }\n }\n if (last) {\n // Fix up .from in last (or move them into first in case of sameLine)\n for (var i = 0; i < last.length; ++i) {\n var span = last[i];\n if (span.to != null) span.to += offset;\n if (span.from == null) {\n var found = getMarkedSpanFor(first, span.marker);\n if (!found) {\n span.from = offset;\n if (sameLine) (first || (first = [])).push(span);\n }\n } else {\n span.from += offset;\n if (sameLine) (first || (first = [])).push(span);\n }\n }\n }\n\n var newMarkers = [newHL(newText[0], first)];\n if (!sameLine) {\n // Fill gap with whole-line-spans\n var gap = newText.length - 2, gapMarkers;\n if (gap > 0 && first)\n for (var i = 0; i < first.length; ++i)\n if (first[i].to == null)\n (gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker});\n for (var i = 0; i < gap; ++i)\n newMarkers.push(newHL(newText[i+1], gapMarkers));\n newMarkers.push(newHL(lst(newText), last));\n }\n return newMarkers;\n }\n\n // hl stands for history-line, a data structure that can be either a\n // string (line without markers) or a {text, markedSpans} object.\n function hlText(val) { return typeof val == \"string\" ? val : val.text; }\n function hlSpans(val) { return typeof val == \"string\" ? null : val.markedSpans; }\n function newHL(text, spans) { return spans ? {text: text, markedSpans: spans} : text; }\n\n function detachMarkedSpans(line) {\n var spans = line.markedSpans;\n if (!spans) return;\n for (var i = 0; i < spans.length; ++i) {\n var lines = spans[i].marker.lines;\n var ix = indexOf(lines, line);\n lines.splice(ix, 1);\n }\n line.markedSpans = null;\n }\n\n function attachMarkedSpans(line, spans) {\n if (!spans) return;\n for (var i = 0; i < spans.length; ++i)\n var marker = spans[i].marker.lines.push(line);\n line.markedSpans = spans;\n }\n\n // LINE DATA STRUCTURE\n\n // Line objects. These hold state related to a line, including\n // highlighting info (the styles array).\n function Line(text, markedSpans, height) {\n this.text = text;\n this.height = height;\n attachMarkedSpans(this, markedSpans);\n }\n\n Line.prototype = {\n update: function(text, markedSpans, cm) {\n this.text = text;\n this.stateAfter = this.styles = null;\n detachMarkedSpans(this);\n attachMarkedSpans(this, markedSpans);\n signalLater(cm, this, \"change\");\n },\n\n // Run the given mode's parser over a line, update the styles\n // array, which contains alternating fragments of text and CSS\n // classes.\n highlight: function(mode, state, tabSize) {\n var stream = new StringStream(this.text, tabSize), st = this.styles || (this.styles = []);\n var pos = st.length = 0;\n if (this.text == \"\" && mode.blankLine) mode.blankLine(state);\n while (!stream.eol()) {\n var style = mode.token(stream, state), substr = stream.current();\n stream.start = stream.pos;\n if (pos && st[pos-1] == style) {\n st[pos-2] += substr;\n } else if (substr) {\n st[pos++] = substr; st[pos++] = style;\n }\n // Give up when line is ridiculously long\n if (stream.pos > 5000) {\n st[pos++] = this.text.slice(stream.pos); st[pos++] = null;\n break;\n }\n }\n },\n\n // Lightweight form of highlight -- proceed over this line and\n // update state, but don't save a style array.\n process: function(mode, state, tabSize) {\n var stream = new StringStream(this.text, tabSize);\n if (this.text == \"\" && mode.blankLine) mode.blankLine(state);\n while (!stream.eol() && stream.pos <= 5000) {\n mode.token(stream, state);\n stream.start = stream.pos;\n }\n },\n\n // Fetch the parser token for a given character. Useful for hacks\n // that want to inspect the mode state (say, for completion).\n getTokenAt: function(mode, state, tabSize, ch) {\n var txt = this.text, stream = new StringStream(txt, tabSize);\n while (stream.pos < ch && !stream.eol()) {\n stream.start = stream.pos;\n var style = mode.token(stream, state);\n }\n return {start: stream.start,\n end: stream.pos,\n string: stream.current(),\n className: style || null,\n state: state};\n },\n\n indentation: function(tabSize) {return countColumn(this.text, null, tabSize);},\n\n // Produces an HTML fragment for the line, taking selection,\n // marking, and highlighting into account.\n getContent: function(tabSize, wrapAt, compensateForWrapping) {\n var first = true, col = 0, specials = /[\\t\\u0000-\\u0019\\u200b\\u2028\\u2029\\uFEFF]/g;\n var pre = elt(\"pre\");\n function span_(text, style) {\n if (!text) return;\n // Work around a bug where, in some compat modes, IE ignores leading spaces\n if (first && ie && text.charAt(0) == \" \") text = \"\\u00a0\" + text.slice(1);\n first = false;\n if (!specials.test(text)) {\n col += text.length;\n var content = document.createTextNode(text);\n } else {\n var content = document.createDocumentFragment(), pos = 0;\n while (true) {\n specials.lastIndex = pos;\n var m = specials.exec(text);\n var skipped = m ? m.index - pos : text.length - pos;\n if (skipped) {\n content.appendChild(document.createTextNode(text.slice(pos, pos + skipped)));\n col += skipped;\n }\n if (!m) break;\n pos += skipped + 1;\n if (m[0] == \"\\t\") {\n var tabWidth = tabSize - col % tabSize;\n content.appendChild(elt(\"span\", spaceStr(tabWidth), \"cm-tab\"));\n col += tabWidth;\n } else {\n var token = elt(\"span\", \"\\u2022\", \"cm-invalidchar\");\n token.title = \"\\\\u\" + m[0].charCodeAt(0).toString(16);\n content.appendChild(token);\n col += 1;\n }\n }\n }\n if (style != null) return pre.appendChild(elt(\"span\", [content], style));\n else return pre.appendChild(content);\n }\n var span = span_;\n if (wrapAt != null) {\n var outPos = 0;\n span = function(text, style) {\n var l = text.length;\n if (wrapAt >= outPos && wrapAt < outPos + l) {\n var cut = wrapAt - outPos;\n if (wrapAt > outPos) {\n span_(text.slice(0, cut), style);\n // See comment at the definition of spanAffectsWrapping\n if (compensateForWrapping && spanAffectsWrapping.test(text.slice(cut - 1, cut + 1)))\n pre.appendChild(elt(\"wbr\"));\n }\n if (cut + 1 == l) {\n pre.anchor = span_(text.slice(cut), style || \"\");\n wrapAt--;\n } else {\n var end = cut + 1;\n while (isExtendingChar.test(text.charAt(end))) ++end;\n pre.anchor = span_(text.slice(cut, end), style || \"\");\n if (compensateForWrapping && spanAffectsWrapping.test(text.slice(cut, end + 1)))\n pre.appendChild(elt(\"wbr\"));\n span_(text.slice(end), style);\n }\n outPos += l;\n } else {\n outPos += l;\n span_(text, style);\n }\n };\n }\n\n var st = this.styles, allText = this.text, marked = this.markedSpans;\n var len = allText.length;\n function styleToClass(style) {\n if (!style) return null;\n return \"cm-\" + style.replace(/ +/g, \" cm-\");\n }\n if (!allText) {\n span(\"\\u00a0\");\n } else if (!marked || !marked.length) {\n for (var i = 0, ch = 0; ch < len; i+=2) {\n var str = st[i], style = st[i+1], l = str.length;\n if (ch + l > len) str = str.slice(0, len - ch);\n ch += l;\n span(str, styleToClass(style));\n }\n } else {\n marked.sort(function(a, b) { return a.from - b.from; });\n var pos = 0, i = 0, text = \"\", style, sg = 0;\n var nextChange = marked[0].from || 0, marks = [], markpos = 0;\n var advanceMarks = function() {\n var m;\n while (markpos < marked.length &&\n ((m = marked[markpos]).from == pos || m.from == null)) {\n if (m.marker.type == \"range\") marks.push(m);\n ++markpos;\n }\n nextChange = markpos < marked.length ? marked[markpos].from : Infinity;\n for (var i = 0; i < marks.length; ++i) {\n var to = marks[i].to;\n if (to == null) to = Infinity;\n if (to == pos) marks.splice(i--, 1);\n else nextChange = Math.min(to, nextChange);\n }\n };\n var m = 0;\n while (pos < len) {\n if (nextChange == pos) advanceMarks();\n var upto = Math.min(len, nextChange);\n while (true) {\n if (text) {\n var end = pos + text.length;\n var appliedStyle = style;\n for (var j = 0; j < marks.length; ++j) {\n var mark = marks[j];\n appliedStyle = (appliedStyle ? appliedStyle + \" \" : \"\") + mark.marker.style;\n if (mark.marker.endStyle && mark.to === Math.min(end, upto)) appliedStyle += \" \" + mark.marker.endStyle;\n if (mark.marker.startStyle && mark.from === pos) appliedStyle += \" \" + mark.marker.startStyle;\n }\n span(end > upto ? text.slice(0, upto - pos) : text, appliedStyle);\n if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}\n pos = end;\n }\n text = st[i++]; style = styleToClass(st[i++]);\n }\n }\n }\n return pre;\n },\n\n cleanUp: function() {\n this.parent = null;\n detachMarkedSpans(this);\n }\n };\n\n // DOCUMENT DATA STRUCTURE\n\n function LeafChunk(lines) {\n this.lines = lines;\n this.parent = null;\n for (var i = 0, e = lines.length, height = 0; i < e; ++i) {\n lines[i].parent = this;\n height += lines[i].height;\n }\n this.height = height;\n }\n\n LeafChunk.prototype = {\n chunkSize: function() { return this.lines.length; },\n remove: function(at, n, cm) {\n for (var i = at, e = at + n; i < e; ++i) {\n var line = this.lines[i];\n this.height -= line.height;\n line.cleanUp();\n signalLater(cm, line, \"delete\");\n }\n this.lines.splice(at, n);\n },\n collapse: function(lines) {\n lines.splice.apply(lines, [lines.length, 0].concat(this.lines));\n },\n insertHeight: function(at, lines, height) {\n this.height += height;\n this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));\n for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this;\n },\n iterN: function(at, n, op) {\n for (var e = at + n; at < e; ++at)\n if (op(this.lines[at])) return true;\n }\n };\n\n function BranchChunk(children) {\n this.children = children;\n var size = 0, height = 0;\n for (var i = 0, e = children.length; i < e; ++i) {\n var ch = children[i];\n size += ch.chunkSize(); height += ch.height;\n ch.parent = this;\n }\n this.size = size;\n this.height = height;\n this.parent = null;\n }\n\n BranchChunk.prototype = {\n chunkSize: function() { return this.size; },\n remove: function(at, n, callbacks) {\n this.size -= n;\n for (var i = 0; i < this.children.length; ++i) {\n var child = this.children[i], sz = child.chunkSize();\n if (at < sz) {\n var rm = Math.min(n, sz - at), oldHeight = child.height;\n child.remove(at, rm, callbacks);\n this.height -= oldHeight - child.height;\n if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }\n if ((n -= rm) == 0) break;\n at = 0;\n } else at -= sz;\n }\n if (this.size - n < 25) {\n var lines = [];\n this.collapse(lines);\n this.children = [new LeafChunk(lines)];\n this.children[0].parent = this;\n }\n },\n collapse: function(lines) {\n for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);\n },\n insert: function(at, lines) {\n var height = 0;\n for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;\n this.insertHeight(at, lines, height);\n },\n insertHeight: function(at, lines, height) {\n this.size += lines.length;\n this.height += height;\n for (var i = 0, e = this.children.length; i < e; ++i) {\n var child = this.children[i], sz = child.chunkSize();\n if (at <= sz) {\n child.insertHeight(at, lines, height);\n if (child.lines && child.lines.length > 50) {\n while (child.lines.length > 50) {\n var spilled = child.lines.splice(child.lines.length - 25, 25);\n var newleaf = new LeafChunk(spilled);\n child.height -= newleaf.height;\n this.children.splice(i + 1, 0, newleaf);\n newleaf.parent = this;\n }\n this.maybeSpill();\n }\n break;\n }\n at -= sz;\n }\n },\n maybeSpill: function() {\n if (this.children.length <= 10) return;\n var me = this;\n do {\n var spilled = me.children.splice(me.children.length - 5, 5);\n var sibling = new BranchChunk(spilled);\n if (!me.parent) { // Become the parent node\n var copy = new BranchChunk(me.children);\n copy.parent = me;\n me.children = [copy, sibling];\n me = copy;\n } else {\n me.size -= sibling.size;\n me.height -= sibling.height;\n var myIndex = indexOf(me.parent.children, me);\n me.parent.children.splice(myIndex + 1, 0, sibling);\n }\n sibling.parent = me.parent;\n } while (me.children.length > 10);\n me.parent.maybeSpill();\n },\n iter: function(from, to, op) { this.iterN(from, to - from, op); },\n iterN: function(at, n, op) {\n for (var i = 0, e = this.children.length; i < e; ++i) {\n var child = this.children[i], sz = child.chunkSize();\n if (at < sz) {\n var used = Math.min(n, sz - at);\n if (child.iterN(at, used, op)) return true;\n if ((n -= used) == 0) break;\n at = 0;\n } else at -= sz;\n }\n }\n };\n\n // LINE UTILITIES\n\n function lineDoc(line) {\n for (var d = line.parent; d && d.parent; d = d.parent) {}\n return d;\n }\n\n function getLine(chunk, n) {\n while (!chunk.lines) {\n for (var i = 0;; ++i) {\n var child = chunk.children[i], sz = child.chunkSize();\n if (n < sz) { chunk = child; break; }\n n -= sz;\n }\n }\n return chunk.lines[n];\n }\n\n function updateLineHeight(line, height) {\n var diff = height - line.height;\n for (var n = line; n; n = n.parent) n.height += diff;\n }\n\n function lineNo(line) {\n if (line.parent == null) return null;\n var cur = line.parent, no = indexOf(cur.lines, line);\n for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {\n for (var i = 0, e = chunk.children.length; ; ++i) {\n if (chunk.children[i] == cur) break;\n no += chunk.children[i].chunkSize();\n }\n }\n return no;\n }\n\n function lineAtHeight(chunk, h) {\n var n = 0;\n outer: do {\n for (var i = 0, e = chunk.children.length; i < e; ++i) {\n var child = chunk.children[i], ch = child.height;\n if (h < ch) { chunk = child; continue outer; }\n h -= ch;\n n += child.chunkSize();\n }\n return n;\n } while (!chunk.lines);\n for (var i = 0, e = chunk.lines.length; i < e; ++i) {\n var line = chunk.lines[i], lh = line.height;\n if (h < lh) break;\n h -= lh;\n }\n return n + i;\n }\n\n function heightAtLine(chunk, n) {\n var h = 0;\n outer: do {\n for (var i = 0, e = chunk.children.length; i < e; ++i) {\n var child = chunk.children[i], sz = child.chunkSize();\n if (n < sz) { chunk = child; continue outer; }\n n -= sz;\n h += child.height;\n }\n return h;\n } while (!chunk.lines);\n for (var i = 0; i < n; ++i) h += chunk.lines[i].height;\n return h;\n }\n\n function getOrder(line) {\n var order = line.order;\n if (order == null) order = line.order = bidiOrdering(line.text);\n return order;\n }\n\n function lineContent(cm, line, anchorAt) {\n if (!line.styles) {\n var doc = lineDoc(line);\n line.highlight(doc.mode, line.stateAfter = getStateBefore(doc, lineNo(line)), cm.options.tabSize);\n }\n return line.getContent(cm.options.tabSize, anchorAt, cm.options.lineWrapping);\n }\n\n // HISTORY\n\n // The history object 'chunks' changes that are made close together\n // and at almost the same time into bigger undoable units.\n function History() {\n this.time = 0;\n this.done = []; this.undone = [];\n this.compound = 0;\n this.closed = false;\n }\n History.prototype = {\n addChange: function(start, added, old) {\n this.undone.length = 0;\n var time = +new Date, cur = lst(this.done), last = cur && lst(cur);\n var dtime = time - this.time;\n\n if (this.compound && cur && !this.closed) {\n cur.push({start: start, added: added, old: old});\n } else if (dtime > 400 || !last || this.closed ||\n last.start > start + old.length || last.start + last.added < start) {\n this.done.push([{start: start, added: added, old: old}]);\n this.closed = false;\n } else {\n var startBefore = Math.max(0, last.start - start),\n endAfter = Math.max(0, (start + old.length) - (last.start + last.added));\n for (var i = startBefore; i > 0; --i) last.old.unshift(old[i - 1]);\n for (var i = endAfter; i > 0; --i) last.old.push(old[old.length - i]);\n if (startBefore) last.start = start;\n last.added += added - (old.length - startBefore - endAfter);\n }\n this.time = time;\n },\n startCompound: function() {\n if (!this.compound++) this.closed = true;\n },\n endCompound: function() {\n if (!--this.compound) this.closed = true;\n }\n };\n\n // EVENT OPERATORS\n\n function stopMethod() {e_stop(this);}\n // Ensure an event has a stop method.\n function addStop(event) {\n if (!event.stop) event.stop = stopMethod;\n return event;\n }\n\n function e_preventDefault(e) {\n if (e.preventDefault) e.preventDefault();\n else e.returnValue = false;\n }\n function e_stopPropagation(e) {\n if (e.stopPropagation) e.stopPropagation();\n else e.cancelBubble = true;\n }\n function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}\n CodeMirror.e_stop = e_stop;\n CodeMirror.e_preventDefault = e_preventDefault;\n CodeMirror.e_stopPropagation = e_stopPropagation;\n\n function e_target(e) {return e.target || e.srcElement;}\n function e_button(e) {\n var b = e.which;\n if (b == null) {\n if (e.button & 1) b = 1;\n else if (e.button & 2) b = 3;\n else if (e.button & 4) b = 2;\n }\n if (mac && e.ctrlKey && b == 1) b = 3;\n return b;\n }\n\n // Allow 3rd-party code to override event properties by adding an override\n // object to an event object.\n function e_prop(e, prop) {\n var overridden = e.override && e.override.hasOwnProperty(prop);\n return overridden ? e.override[prop] : e[prop];\n }\n\n // EVENT HANDLING\n\n function on(emitter, type, f) {\n if (emitter.addEventListener)\n emitter.addEventListener(type, f, false);\n else if (emitter.attachEvent)\n emitter.attachEvent(\"on\" + type, f);\n else {\n var map = emitter._handlers || (emitter._handlers = {});\n var arr = map[type] || (map[type] = []);\n arr.push(f);\n }\n }\n\n function off(emitter, type, f) {\n if (emitter.removeEventListener)\n emitter.removeEventListener(type, f, false);\n else if (emitter.detachEvent)\n emitter.detachEvent(\"on\" + type, f);\n else {\n var arr = emitter._handlers && emitter._handlers[type];\n if (!arr) return;\n for (var i = 0; i < arr.length; ++i)\n if (arr[i] == f) { arr.splice(i, 1); break; }\n }\n }\n\n function signal(emitter, type /*, values...*/) {\n var arr = emitter._handlers && emitter._handlers[type];\n if (!arr) return;\n var args = Array.prototype.slice.call(arguments, 2);\n for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);\n }\n\n function signalLater(cm, emitter, type /*, values...*/) {\n var arr = emitter._handlers && emitter._handlers[type];\n if (!arr) return;\n var args = Array.prototype.slice.call(arguments, 3), flist = cm.curOp && cm.curOp.delayedCallbacks;\n function bnd(f) {return function(){f.apply(null, args);};};\n for (var i = 0; i < arr.length; ++i)\n if (flist) flist.push(bnd(arr[i]));\n else arr[i].apply(null, args);\n }\n\n function hasHandler(emitter, type) {\n var arr = emitter._handlers && emitter._handlers[type];\n return arr && arr.length > 0;\n }\n\n CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal;\n\n // MISC UTILITIES\n\n // Number of pixels added to scroller and sizer to hide scrollbar\n var scrollerCutOff = 30;\n\n // Returned or thrown by various protocols to signal 'I'm not\n // handling this'.\n var Pass = CodeMirror.Pass = {toString: function(){return \"CodeMirror.Pass\";}};\n\n function Delayed() {this.id = null;}\n Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};\n\n // Counts the column offset in a string, taking tabs into account.\n // Used mostly to find indentation.\n function countColumn(string, end, tabSize) {\n if (end == null) {\n end = string.search(/[^\\s\\u00a0]/);\n if (end == -1) end = string.length;\n }\n for (var i = 0, n = 0; i < end; ++i) {\n if (string.charAt(i) == \"\\t\") n += tabSize - (n % tabSize);\n else ++n;\n }\n return n;\n }\n\n var spaceStrs = [\"\"];\n function spaceStr(n) {\n while (spaceStrs.length <= n)\n spaceStrs.push(lst(spaceStrs) + \" \");\n return spaceStrs[n];\n }\n\n function lst(arr) { return arr[arr.length-1]; }\n\n function selectInput(node) {\n if (ios) { // Mobile Safari apparently has a bug where select() is broken.\n node.selectionStart = 0;\n node.selectionEnd = node.value.length;\n } else node.select();\n }\n\n // Used to position the cursor after an undo/redo by finding the\n // last edited character.\n function editEnd(from, to) {\n if (!to) return 0;\n if (!from) return to.length;\n for (var i = from.length, j = to.length; i >= 0 && j >= 0; --i, --j)\n if (from.charAt(i) != to.charAt(j)) break;\n return j + 1;\n }\n\n function indexOf(collection, elt) {\n if (collection.indexOf) return collection.indexOf(elt);\n for (var i = 0, e = collection.length; i < e; ++i)\n if (collection[i] == elt) return i;\n return -1;\n }\n\n function bind(f) {\n var args = Array.prototype.slice.call(arguments, 1);\n return function(){return f.apply(null, args);};\n }\n\n function isWordChar(ch) {\n return /\\w/.test(ch) || ch.toUpperCase() != ch.toLowerCase();\n }\n\n function isEmpty(obj) {\n var c = 0;\n for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) ++c;\n return !c;\n }\n\n var isExtendingChar = /[\\u0300-\\u036F\\u0483-\\u0487\\u0488-\\u0489\\u0591-\\u05BD\\u05BF\\u05C1-\\u05C2\\u05C4-\\u05C5\\u05C7\\u0610-\\u061A\\u064B-\\u065F\\u0670\\u06D6-\\u06DC\\u06DF-\\u06E4\\u06E7-\\u06E8\\u06EA-\\u06ED\\uA66F\\uA670-\\uA672\\uA674-\\uA67D\\uA69F]/;\n\n // DOM UTILITIES\n\n function elt(tag, content, className, style) {\n var e = document.createElement(tag);\n if (className) e.className = className;\n if (style) e.style.cssText = style;\n if (typeof content == \"string\") setTextContent(e, content);\n else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);\n return e;\n }\n\n function removeChildren(e) {\n e.innerHTML = \"\";\n return e;\n }\n\n function removeChildrenAndAdd(parent, e) {\n return removeChildren(parent).appendChild(e);\n }\n\n function setTextContent(e, str) {\n if (ie_lt9) {\n e.innerHTML = \"\";\n e.appendChild(document.createTextNode(str));\n } else e.textContent = str;\n }\n\n // FEATURE DETECTION\n\n // Detect drag-and-drop\n var dragAndDrop = function() {\n // There is *some* kind of drag-and-drop support in IE6-8, but I\n // couldn't get it to work yet.\n if (ie_lt9) return false;\n var div = elt('div');\n return \"draggable\" in div || \"dragDrop\" in div;\n }();\n\n // Feature-detect whether newlines in textareas are converted to \\r\\n\n var lineSep = function () {\n var te = elt(\"textarea\");\n te.value = \"foo\\nbar\";\n if (te.value.indexOf(\"\\r\") > -1) return \"\\r\\n\";\n return \"\\n\";\n }();\n\n // For a reason I have yet to figure out, some browsers disallow\n // word wrapping between certain characters *only* if a new inline\n // element is started between them. This makes it hard to reliably\n // measure the position of things, since that requires inserting an\n // extra span. This terribly fragile set of regexps matches the\n // character combinations that suffer from this phenomenon on the\n // various browsers.\n var spanAffectsWrapping = /^$/; // Won't match any two-character string\n if (gecko) spanAffectsWrapping = /$'/;\n else if (safari) spanAffectsWrapping = /\\-[^ \\-?]|\\?[^ !'\\\"\\),.\\-\\/:;\\?\\]\\}]/;\n else if (chrome) spanAffectsWrapping = /\\-[^ \\-\\.?]|\\?[^ \\-\\.?\\]\\}:;!'\\\"\\),\\/]|[\\.!\\\"#&%\\)*+,:;=>\\]|\\}~][\\(\\{\\[<]|\\$'/;\n\n var knownScrollbarWidth;\n function scrollbarWidth(measure) {\n if (knownScrollbarWidth != null) return knownScrollbarWidth;\n var test = elt(\"div\", null, null, \"width: 50px; height: 50px; overflow-x: scroll\");\n removeChildrenAndAdd(measure, test);\n if (test.offsetWidth)\n knownScrollbarWidth = test.offsetHeight - test.clientHeight;\n return knownScrollbarWidth || 0;\n }\n\n // See if \"\".split is the broken IE version, if so, provide an\n // alternative way to split lines.\n var splitLines = \"\\n\\nb\".split(/\\n/).length != 3 ? function(string) {\n var pos = 0, result = [], l = string.length;\n while (pos <= l) {\n var nl = string.indexOf(\"\\n\", pos);\n if (nl == -1) nl = string.length;\n var line = string.slice(pos, string.charAt(nl - 1) == \"\\r\" ? nl - 1 : nl);\n var rt = line.indexOf(\"\\r\");\n if (rt != -1) {\n result.push(line.slice(0, rt));\n pos += rt + 1;\n } else {\n result.push(line);\n pos = nl + 1;\n }\n }\n return result;\n } : function(string){return string.split(/\\r\\n?|\\n/);};\n CodeMirror.splitLines = splitLines;\n\n var hasSelection = window.getSelection ? function(te) {\n try { return te.selectionStart != te.selectionEnd; }\n catch(e) { return false; }\n } : function(te) {\n try {var range = te.ownerDocument.selection.createRange();}\n catch(e) {}\n if (!range || range.parentElement() != te) return false;\n return range.compareEndPoints(\"StartToEnd\", range) != 0;\n };\n\n var hasCopyEvent = (function() {\n var e = elt(\"div\");\n if (\"oncopy\" in e) return true;\n e.setAttribute(\"oncopy\", \"return;\");\n return typeof e.oncopy == 'function';\n })();\n\n // KEY NAMING\n\n var keyNames = {3: \"Enter\", 8: \"Backspace\", 9: \"Tab\", 13: \"Enter\", 16: \"Shift\", 17: \"Ctrl\", 18: \"Alt\",\n 19: \"Pause\", 20: \"CapsLock\", 27: \"Esc\", 32: \"Space\", 33: \"PageUp\", 34: \"PageDown\", 35: \"End\",\n 36: \"Home\", 37: \"Left\", 38: \"Up\", 39: \"Right\", 40: \"Down\", 44: \"PrintScrn\", 45: \"Insert\",\n 46: \"Delete\", 59: \";\", 91: \"Mod\", 92: \"Mod\", 93: \"Mod\", 109: \"-\", 107: \"=\", 127: \"Delete\",\n 186: \";\", 187: \"=\", 188: \",\", 189: \"-\", 190: \".\", 191: \"/\", 192: \"`\", 219: \"[\", 220: \"\\\\\",\n 221: \"]\", 222: \"'\", 63276: \"PageUp\", 63277: \"PageDown\", 63275: \"End\", 63273: \"Home\",\n 63234: \"Left\", 63232: \"Up\", 63235: \"Right\", 63233: \"Down\", 63302: \"Insert\", 63272: \"Delete\"};\n CodeMirror.keyNames = keyNames;\n (function() {\n // Number keys\n for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i);\n // Alphabetic keys\n for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);\n // Function keys\n for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = \"F\" + i;\n })();\n\n // BIDI HELPERS\n\n function iterateBidiSections(order, from, to, f) {\n if (!order) return f(from, to, \"ltr\");\n for (var i = 0; i < order.length; ++i) {\n var part = order[i];\n if (part.from < to && part.to > from)\n f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? \"rtl\" : \"ltr\");\n }\n }\n\n function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }\n function bidiRight(part) { return part.level % 2 ? part.from : part.to; }\n\n function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }\n function lineRight(line) {\n var order = getOrder(line);\n if (!order) return line.text.length;\n return bidiRight(lst(order));\n }\n function lineStart(line) {\n var order = getOrder(line);\n if (!order) return 0;\n return order[0].level % 2 ? lineRight(line) : lineLeft(line);\n }\n function lineEnd(line) {\n var order = getOrder(line);\n if (!order) return line.text.length;\n return order[0].level % 2 ? lineLeft(line) : lineRight(line);\n }\n\n // This is somewhat involved. It is needed in order to move\n // 'visually' through bi-directional text -- i.e., pressing left\n // should make the cursor go left, even when in RTL text. The\n // tricky part is the 'jumps', where RTL and LTR text touch each\n // other. This often requires the cursor offset to move more than\n // one unit, in order to visually move one unit.\n function moveVisually(line, start, dir, byUnit) {\n var bidi = getOrder(line);\n if (!bidi) return moveLogically(line, start, dir, byUnit);\n var moveOneUnit = byUnit ? function(pos, dir) {\n do pos += dir;\n while (pos > 0 && isExtendingChar.test(line.text.charAt(pos)));\n return pos;\n } : function(pos, dir) { return pos + dir; };\n var linedir = bidi[0].level;\n for (var i = 0; i < bidi.length; ++i) {\n var part = bidi[i], sticky = part.level % 2 == linedir;\n if ((part.from < start && part.to > start) ||\n (sticky && (part.from == start || part.to == start))) break;\n }\n var target = moveOneUnit(start, part.level % 2 ? -dir : dir);\n\n while (target != null) {\n if (part.level % 2 == linedir) {\n if (target < part.from || target > part.to) {\n part = bidi[i += dir];\n target = part && (dir > 0 == part.level % 2 ? moveOneUnit(part.to, -1) : moveOneUnit(part.from, 1));\n } else break;\n } else {\n if (target == bidiLeft(part)) {\n part = bidi[--i];\n target = part && bidiRight(part);\n } else if (target == bidiRight(part)) {\n part = bidi[++i];\n target = part && bidiLeft(part);\n } else break;\n }\n }\n\n return target < 0 || target > line.text.length ? null : target;\n }\n\n function moveLogically(line, start, dir, byUnit) {\n var target = start + dir;\n if (byUnit) while (target > 0 && isExtendingChar.test(line.text.charAt(target))) target += dir;\n return target < 0 || target > line.text.length ? null : target;\n }\n\n // Bidirectional ordering algorithm\n // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm\n // that this (partially) implements.\n\n // One-char codes used for character types:\n // L (L): Left-to-Right\n // R (R): Right-to-Left\n // r (AL): Right-to-Left Arabic\n // 1 (EN): European Number\n // + (ES): European Number Separator\n // % (ET): European Number Terminator\n // n (AN): Arabic Number\n // , (CS): Common Number Separator\n // m (NSM): Non-Spacing Mark\n // b (BN): Boundary Neutral\n // s (B): Paragraph Separator\n // t (S): Segment Separator\n // w (WS): Whitespace\n // N (ON): Other Neutrals\n\n // Returns null if characters are ordered as they appear\n // (left-to-right), or an array of sections ({from, to, level}\n // objects) in the order in which they occur visually.\n var bidiOrdering = (function() {\n // Character types for codepoints 0 to 0xff\n var lowTypes = \"bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL\";\n // Character types for codepoints 0x600 to 0x6ff\n var arabicTypes = \"rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr\";\n function charType(code) {\n var type = \"L\";\n if (code <= 0xff) return lowTypes.charAt(code);\n else if (0x590 <= code && code <= 0x5f4) return \"R\";\n else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600);\n else if (0x700 <= code && code <= 0x8ac) return \"r\";\n else return \"L\";\n }\n\n var bidiRE = /[\\u0590-\\u05f4\\u0600-\\u06ff\\u0700-\\u08ac]/;\n var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;\n\n return function charOrdering(str) {\n if (!bidiRE.test(str)) return false;\n var len = str.length, types = new Array(len), startType = null;\n for (var i = 0; i < len; ++i) {\n var type = types[i] = charType(str.charCodeAt(i));\n if (startType == null) {\n if (type == \"L\") startType = \"L\";\n else if (type == \"R\" || type == \"r\") startType = \"R\";\n }\n }\n if (startType == null) startType = \"L\";\n\n // W1. Examine each non-spacing mark (NSM) in the level run, and\n // change the type of the NSM to the type of the previous\n // character. If the NSM is at the start of the level run, it will\n // get the type of sor.\n for (var i = 0, prev = startType; i < len; ++i) {\n var type = types[i];\n if (type == \"m\") types[i] = prev;\n else prev = type;\n }\n\n // W2. Search backwards from each instance of a European number\n // until the first strong type (R, L, AL, or sor) is found. If an\n // AL is found, change the type of the European number to Arabic\n // number.\n // W3. Change all ALs to R.\n for (var i = 0, cur = startType; i < len; ++i) {\n var type = types[i];\n if (type == \"1\" && cur == \"r\") types[i] = \"n\";\n else if (isStrong.test(type)) { cur = type; if (type == \"r\") types[i] = \"R\"; }\n }\n\n // W4. A single European separator between two European numbers\n // changes to a European number. A single common separator between\n // two numbers of the same type changes to that type.\n for (var i = 1, prev = types[0]; i < len - 1; ++i) {\n var type = types[i];\n if (type == \"+\" && prev == \"1\" && types[i+1] == \"1\") types[i] = \"1\";\n else if (type == \",\" && prev == types[i+1] &&\n (prev == \"1\" || prev == \"n\")) types[i] = prev;\n prev = type;\n }\n\n // W5. A sequence of European terminators adjacent to European\n // numbers changes to all European numbers.\n // W6. Otherwise, separators and terminators change to Other\n // Neutral.\n for (var i = 0; i < len; ++i) {\n var type = types[i];\n if (type == \",\") types[i] = \"N\";\n else if (type == \"%\") {\n for (var end = i + 1; end < len && types[end] == \"%\"; ++end) {}\n var replace = (i && types[i-1] == \"!\") || (end < len - 1 && types[end] == \"1\") ? \"1\" : \"N\";\n for (var j = i; j < end; ++j) types[j] = replace;\n i = end - 1;\n }\n }\n\n // W7. Search backwards from each instance of a European number\n // until the first strong type (R, L, or sor) is found. If an L is\n // found, then change the type of the European number to L.\n for (var i = 0, cur = startType; i < len; ++i) {\n var type = types[i];\n if (cur == \"L\" && type == \"1\") types[i] = \"L\";\n else if (isStrong.test(type)) cur = type;\n }\n\n // N1. A sequence of neutrals takes the direction of the\n // surrounding strong text if the text on both sides has the same\n // direction. European and Arabic numbers act as if they were R in\n // terms of their influence on neutrals. Start-of-level-run (sor)\n // and end-of-level-run (eor) are used at level run boundaries.\n // N2. Any remaining neutrals take the embedding direction.\n for (var i = 0; i < len; ++i) {\n if (isNeutral.test(types[i])) {\n for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}\n var before = (i ? types[i-1] : startType) == \"L\";\n var after = (end < len - 1 ? types[end] : startType) == \"L\";\n var replace = before || after ? \"L\" : \"R\";\n for (var j = i; j < end; ++j) types[j] = replace;\n i = end - 1;\n }\n }\n\n // Here we depart from the documented algorithm, in order to avoid\n // building up an actual levels array. Since there are only three\n // levels (0, 1, 2) in an implementation that doesn't take\n // explicit embedding into account, we can build up the order on\n // the fly, without following the level-based algorithm.\n var order = [], m;\n for (var i = 0; i < len;) {\n if (countsAsLeft.test(types[i])) {\n var start = i;\n for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}\n order.push({from: start, to: i, level: 0});\n } else {\n var pos = i, at = order.length;\n for (++i; i < len && types[i] != \"L\"; ++i) {}\n for (var j = pos; j < i;) {\n if (countsAsNum.test(types[j])) {\n if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1});\n var nstart = j;\n for (++j; j < i && countsAsNum.test(types[j]); ++j) {}\n order.splice(at, 0, {from: nstart, to: j, level: 2});\n pos = j;\n } else ++j;\n }\n if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1});\n }\n }\n if (order[0].level == 1 && (m = str.match(/^\\s+/))) {\n order[0].from = m[0].length;\n order.unshift({from: 0, to: m[0].length, level: 0});\n }\n if (lst(order).level == 1 && (m = str.match(/\\s+$/))) {\n lst(order).to -= m[0].length;\n order.push({from: len - m[0].length, to: len, level: 0});\n }\n if (order[0].level != lst(order).level)\n order.push({from: len, to: len, level: order[0].level});\n\n return order;\n };\n })();\n\n // THE END\n\n CodeMirror.version = \"3.0 B\";\n\n return CodeMirror;\n})();"; |