Software: Apache. PHP/5.5.15 uname -a: Windows NT SVR-DMZ 6.1 build 7600 (Windows Server 2008 R2 Enterprise Edition) i586 SYSTEM Safe-mode: OFF (not secure) C:\phpMyAdmin1\js\codemirror\lib\ drwxrwxrwx |
Viewing file: codemirror.js (221.21 KB) -rw-rw-rw- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) | // CodeMirror version 3.15 // // CodeMirror is the only global var we claim window.CodeMirror = (function() { "use strict"; // BROWSER SNIFFING // Crude, but necessary to handle a number of hard-to-feature-detect // bugs and behavior differences. var gecko = /gecko\/\d/i.test(navigator.userAgent); var ie = /MSIE \d/.test(navigator.userAgent); var ie_lt8 = ie && (document.documentMode == null || document.documentMode < 8); var ie_lt9 = ie && (document.documentMode == null || document.documentMode < 9); var webkit = /WebKit\//.test(navigator.userAgent); var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent); var chrome = /Chrome\//.test(navigator.userAgent); var opera = /Opera\//.test(navigator.userAgent); var safari = /Apple Computer/.test(navigator.vendor); var khtml = /KHTML\//.test(navigator.userAgent); var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent); var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent); var phantom = /PhantomJS/.test(navigator.userAgent); var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent); // This is woefully incomplete. Suggestions for alternative methods welcome. var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent); var mac = ios || /Mac/.test(navigator.platform); var windows = /windows/i.test(navigator.platform); var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/); if (opera_version) opera_version = Number(opera_version[1]); if (opera_version && opera_version >= 15) { opera = false; webkit = true; } // Some browsers use the wrong event properties to signal cmd/ctrl on OS X var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11)); var captureMiddleClick = gecko || (ie && !ie_lt9); // Optimize some code when these features are not used var sawReadOnlySpans = false, sawCollapsedSpans = false; // CONSTRUCTOR function CodeMirror(place, options) { if (!(this instanceof CodeMirror)) return new CodeMirror(place, options); this.options = options = options || {}; // Determine effective options based on given values and defaults. for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt)) options[opt] = defaults[opt]; setGuttersForLineNumbers(options); var docStart = typeof options.value == "string" ? 0 : options.value.first; var display = this.display = makeDisplay(place, docStart); display.wrapper.CodeMirror = this; updateGutters(this); if (options.autofocus && !mobile) focusInput(this); this.state = {keyMaps: [], overlays: [], modeGen: 0, overwrite: false, focused: false, suppressEdits: false, pasteIncoming: false, draggingText: false, highlight: new Delayed()}; themeChanged(this); if (options.lineWrapping) this.display.wrapper.className += " CodeMirror-wrap"; var doc = options.value; if (typeof doc == "string") doc = new Doc(options.value, options.mode); operation(this, attachDoc)(this, doc); // Override magic textarea content restore that IE sometimes does // on our hidden textarea on reload if (ie) setTimeout(bind(resetInput, this, true), 20); registerEventHandlers(this); // IE throws unspecified error in certain cases, when // trying to access activeElement before onload var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { } if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20); else onBlur(this); operation(this, function() { for (var opt in optionHandlers) if (optionHandlers.propertyIsEnumerable(opt)) optionHandlers[opt](this, options[opt], Init); for (var i = 0; i < initHooks.length; ++i) initHooks[i](this); })(); } // DISPLAY CONSTRUCTOR function makeDisplay(place, docStart) { var d = {}; var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none; font-size: 4px;"); if (webkit) input.style.width = "1000px"; else input.setAttribute("wrap", "off"); // if border: 0; -- iOS fails to open keyboard (issue #1287) if (ios) input.style.border = "1px solid black"; input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false"); // Wraps and hides input textarea d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); // The actual fake scrollbars. d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar"); d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar"); d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler"); // DIVs containing the selection and the actual code d.lineDiv = elt("div", null, "CodeMirror-code"); d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); // Blinky cursor, and element used to ensure cursor fits at the end of a line d.cursor = elt("div", "\u00a0", "CodeMirror-cursor"); // Secondary cursor, shown when on a 'jump' in bi-directional text d.otherCursor = elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"); // Used to measure text size d.measure = elt("div", null, "CodeMirror-measure"); // Wraps everything that needs to exist inside the vertically-padded coordinate system d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor], null, "position: relative; outline: none"); // Moved around its parent to cover visible view d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative"); // Set to the height of the text, causes scrolling d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;"); // Will contain the gutters, if any d.gutters = elt("div", null, "CodeMirror-gutters"); d.lineGutter = null; // Provides scrolling d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll"); d.scroller.setAttribute("tabIndex", "-1"); // The element in which the editor lives. d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV, d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror"); // Work around IE7 z-index bug if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper); // Needed to hide big blue blinking cursor on Mobile Safari if (ios) input.style.width = "0px"; if (!webkit) d.scroller.draggable = true; // Needed to handle Tab key in KHTML if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; } // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px"; // Current visible range (may be bigger than the view window). d.viewOffset = d.lastSizeC = 0; d.showingFrom = d.showingTo = docStart; // Used to only resize the line number gutter when necessary (when // the amount of lines crosses a boundary that makes its width change) d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null; // See readInput and resetInput d.prevInput = ""; // Set to true when a non-horizontal-scrolling widget is added. As // an optimization, widget aligning is skipped when d is false. d.alignWidgets = false; // Flag that indicates whether we currently expect input to appear // (after some event like 'keypress' or 'input') and are polling // intensively. d.pollingFast = false; // Self-resetting timeout for the poller d.poll = new Delayed(); d.cachedCharWidth = d.cachedTextHeight = null; d.measureLineCache = []; d.measureLineCachePos = 0; // Tracks when resetInput has punted to just putting a short // string instead of the (large) selection. d.inaccurateSelection = false; // Tracks the maximum line length so that the horizontal scrollbar // can be kept static when scrolling. d.maxLine = null; d.maxLineLength = 0; d.maxLineChanged = false; // Used for measuring wheel scrolling granularity d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null; return d; } // STATE UPDATES // Used to get the editor into a consistent state again when options change. function loadMode(cm) { cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption); cm.doc.iter(function(line) { if (line.stateAfter) line.stateAfter = null; if (line.styles) line.styles = null; }); cm.doc.frontier = cm.doc.first; startWorker(cm, 100); cm.state.modeGen++; if (cm.curOp) regChange(cm); } function wrappingChanged(cm) { if (cm.options.lineWrapping) { cm.display.wrapper.className += " CodeMirror-wrap"; cm.display.sizer.style.minWidth = ""; } else { cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", ""); computeMaxLength(cm); } estimateLineHeights(cm); regChange(cm); clearCaches(cm); setTimeout(function(){updateScrollbars(cm);}, 100); } function estimateHeight(cm) { var th = textHeight(cm.display), wrapping = cm.options.lineWrapping; var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3); return function(line) { if (lineIsHidden(cm.doc, line)) return 0; else if (wrapping) return (Math.ceil(line.text.length / perLine) || 1) * th; else return th; }; } function estimateLineHeights(cm) { var doc = cm.doc, est = estimateHeight(cm); doc.iter(function(line) { var estHeight = est(line); if (estHeight != line.height) updateLineHeight(line, estHeight); }); } function keyMapChanged(cm) { var map = keyMap[cm.options.keyMap], style = map.style; cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") + (style ? " cm-keymap-" + style : ""); cm.state.disableInput = map.disableInput; } function themeChanged(cm) { cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); clearCaches(cm); } function guttersChanged(cm) { updateGutters(cm); regChange(cm); setTimeout(function(){alignHorizontally(cm);}, 20); } function updateGutters(cm) { var gutters = cm.display.gutters, specs = cm.options.gutters; removeChildren(gutters); for (var i = 0; i < specs.length; ++i) { var gutterClass = specs[i]; var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)); if (gutterClass == "CodeMirror-linenumbers") { cm.display.lineGutter = gElt; gElt.style.width = (cm.display.lineNumWidth || 1) + "px"; } } gutters.style.display = i ? "" : "none"; } function lineLength(doc, line) { if (line.height == 0) return 0; var len = line.text.length, merged, cur = line; while (merged = collapsedSpanAtStart(cur)) { var found = merged.find(); cur = getLine(doc, found.from.line); len += found.from.ch - found.to.ch; } cur = line; while (merged = collapsedSpanAtEnd(cur)) { var found = merged.find(); len -= cur.text.length - found.from.ch; cur = getLine(doc, found.to.line); len += cur.text.length - found.to.ch; } return len; } function computeMaxLength(cm) { var d = cm.display, doc = cm.doc; d.maxLine = getLine(doc, doc.first); d.maxLineLength = lineLength(doc, d.maxLine); d.maxLineChanged = true; doc.iter(function(line) { var len = lineLength(doc, line); if (len > d.maxLineLength) { d.maxLineLength = len; d.maxLine = line; } }); } // Make sure the gutters options contains the element // "CodeMirror-linenumbers" when the lineNumbers option is true. function setGuttersForLineNumbers(options) { var found = false; for (var i = 0; i < options.gutters.length; ++i) { if (options.gutters[i] == "CodeMirror-linenumbers") { if (options.lineNumbers) found = true; else options.gutters.splice(i--, 1); } } if (!found && options.lineNumbers) options.gutters.push("CodeMirror-linenumbers"); } // SCROLLBARS // Re-synchronize the fake scrollbars with the actual size of the // content. Optionally force a scrollTop. function updateScrollbars(cm) { var d = cm.display, docHeight = cm.doc.height; var totalHeight = docHeight + paddingVert(d); d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px"; d.gutters.style.height = Math.max(totalHeight, d.scroller.clientHeight - scrollerCutOff) + "px"; var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight); var needsH = d.scroller.scrollWidth > (d.scroller.clientWidth + 1); var needsV = scrollHeight > (d.scroller.clientHeight + 1); if (needsV) { d.scrollbarV.style.display = "block"; d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0"; d.scrollbarV.firstChild.style.height = (scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px"; } else d.scrollbarV.style.display = ""; if (needsH) { d.scrollbarH.style.display = "block"; d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0"; d.scrollbarH.firstChild.style.width = (d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px"; } else d.scrollbarH.style.display = ""; if (needsH && needsV) { d.scrollbarFiller.style.display = "block"; d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px"; } else d.scrollbarFiller.style.display = ""; if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { d.gutterFiller.style.display = "block"; d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px"; d.gutterFiller.style.width = d.gutters.offsetWidth + "px"; } else d.gutterFiller.style.display = ""; if (mac_geLion && scrollbarWidth(d.measure) === 0) d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px"; } function visibleLines(display, doc, viewPort) { var top = display.scroller.scrollTop, height = display.wrapper.clientHeight; if (typeof viewPort == "number") top = viewPort; else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;} top = Math.floor(top - paddingTop(display)); var bottom = Math.ceil(top + height); return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)}; } // LINE NUMBERS function alignHorizontally(cm) { var display = cm.display; if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return; var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft; var gutterW = display.gutters.offsetWidth, l = comp + "px"; for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) { for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l; } if (cm.options.fixedGutter) display.gutters.style.left = (comp + gutterW) + "px"; } function maybeUpdateLineNumberWidth(cm) { if (!cm.options.lineNumbers) return false; var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display; if (last.length != display.lineNumChars) { var test = display.measure.appendChild(elt("div", [elt("div", last)], "CodeMirror-linenumber CodeMirror-gutter-elt")); var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW; display.lineGutter.style.width = ""; display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding); display.lineNumWidth = display.lineNumInnerWidth + padding; display.lineNumChars = display.lineNumInnerWidth ? last.length : -1; display.lineGutter.style.width = display.lineNumWidth + "px"; return true; } return false; } function lineNumberFor(options, i) { return String(options.lineNumberFormatter(i + options.firstLineNumber)); } function compensateForHScroll(display) { return getRect(display.scroller).left - getRect(display.sizer).left; } // DISPLAY DRAWING function updateDisplay(cm, changes, viewPort, forced) { var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo, updated; var visible = visibleLines(cm.display, cm.doc, viewPort); for (;;) { if (!updateDisplayInner(cm, changes, visible, forced)) break; forced = false; updated = true; updateSelection(cm); updateScrollbars(cm); // Clip forced viewport to actual scrollable area if (viewPort) viewPort = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, typeof viewPort == "number" ? viewPort : viewPort.top); visible = visibleLines(cm.display, cm.doc, viewPort); if (visible.from >= cm.display.showingFrom && visible.to <= cm.display.showingTo) break; changes = []; } if (updated) { signalLater(cm, "update", cm); if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo) signalLater(cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo); } return updated; } // Uses a set of changes plus the current scroll position to // determine which DOM updates have to be made, and makes the // updates. function updateDisplayInner(cm, changes, visible, forced) { var display = cm.display, doc = cm.doc; if (!display.wrapper.clientWidth) { display.showingFrom = display.showingTo = doc.first; display.viewOffset = 0; return; } // Bail out if the visible area is already rendered and nothing changed. if (!forced && changes.length == 0 && visible.from > display.showingFrom && visible.to < display.showingTo) return; if (maybeUpdateLineNumberWidth(cm)) changes = [{from: doc.first, to: doc.first + doc.size}]; var gutterW = display.sizer.style.marginLeft = display.gutters.offsetWidth + "px"; display.scrollbarH.style.left = cm.options.fixedGutter ? gutterW : "0"; // Used to determine which lines need their line numbers updated var positionsChangedFrom = Infinity; if (cm.options.lineNumbers) for (var i = 0; i < changes.length; ++i) if (changes[i].diff) { positionsChangedFrom = changes[i].from; break; } var end = doc.first + doc.size; var from = Math.max(visible.from - cm.options.viewportMargin, doc.first); var to = Math.min(end, visible.to + cm.options.viewportMargin); if (display.showingFrom < from && from - display.showingFrom < 20) from = Math.max(doc.first, display.showingFrom); if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(end, display.showingTo); if (sawCollapsedSpans) { from = lineNo(visualLine(doc, getLine(doc, from))); while (to < end && lineIsHidden(doc, getLine(doc, to))) ++to; } // Create a range of theoretically intact lines, and punch holes // in that using the change info. var intact = [{from: Math.max(display.showingFrom, doc.first), to: Math.min(display.showingTo, end)}]; if (intact[0].from >= intact[0].to) intact = []; else intact = computeIntact(intact, changes); // When merged lines are present, we might have to reduce the // intact ranges because changes in continued fragments of the // intact lines do require the lines to be redrawn. if (sawCollapsedSpans) for (var i = 0; i < intact.length; ++i) { var range = intact[i], merged; while (merged = collapsedSpanAtEnd(getLine(doc, range.to - 1))) { var newTo = merged.find().from.line; if (newTo > range.from) range.to = newTo; else { intact.splice(i--, 1); break; } } } // Clip off the parts that won't be visible var intactLines = 0; for (var i = 0; i < intact.length; ++i) { var range = intact[i]; if (range.from < from) range.from = from; if (range.to > to) range.to = to; if (range.from >= range.to) intact.splice(i--, 1); else intactLines += range.to - range.from; } if (!forced && intactLines == to - from && from == display.showingFrom && to == display.showingTo) { updateViewOffset(cm); return; } intact.sort(function(a, b) {return a.from - b.from;}); // Avoid crashing on IE's "unspecified error" when in iframes try { var focused = document.activeElement; } catch(e) {} if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none"; patchDisplay(cm, from, to, intact, positionsChangedFrom); display.lineDiv.style.display = ""; if (focused && document.activeElement != focused && focused.offsetHeight) focused.focus(); var different = from != display.showingFrom || to != display.showingTo || display.lastSizeC != display.wrapper.clientHeight; // This is just a bogus formula that detects when the editor is // resized or the font size changes. if (different) { display.lastSizeC = display.wrapper.clientHeight; startWorker(cm, 400); } display.showingFrom = from; display.showingTo = to; updateHeightsInViewport(cm); updateViewOffset(cm); return true; } function updateHeightsInViewport(cm) { var display = cm.display; var prevBottom = display.lineDiv.offsetTop; for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) { if (ie_lt8) { var bot = node.offsetTop + node.offsetHeight; height = bot - prevBottom; prevBottom = bot; } else { var box = getRect(node); height = box.bottom - box.top; } var diff = node.lineObj.height - height; if (height < 2) height = textHeight(display); if (diff > .001 || diff < -.001) { updateLineHeight(node.lineObj, height); var widgets = node.lineObj.widgets; if (widgets) for (var i = 0; i < widgets.length; ++i) widgets[i].height = widgets[i].node.offsetHeight; } } } function updateViewOffset(cm) { var off = cm.display.viewOffset = heightAtLine(cm, getLine(cm.doc, cm.display.showingFrom)); // Position the mover div to align with the current virtual scroll position cm.display.mover.style.top = off + "px"; } function computeIntact(intact, changes) { for (var i = 0, l = changes.length || 0; i < l; ++i) { var change = changes[i], intact2 = [], diff = change.diff || 0; for (var j = 0, l2 = intact.length; j < l2; ++j) { var range = intact[j]; if (change.to <= range.from && change.diff) { intact2.push({from: range.from + diff, to: range.to + diff}); } else if (change.to <= range.from || change.from >= range.to) { intact2.push(range); } else { if (change.from > range.from) intact2.push({from: range.from, to: change.from}); if (change.to < range.to) intact2.push({from: change.to + diff, to: range.to + diff}); } } intact = intact2; } return intact; } function getDimensions(cm) { var d = cm.display, left = {}, width = {}; for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { left[cm.options.gutters[i]] = n.offsetLeft; width[cm.options.gutters[i]] = n.offsetWidth; } return {fixedPos: compensateForHScroll(d), gutterTotalWidth: d.gutters.offsetWidth, gutterLeft: left, gutterWidth: width, wrapperWidth: d.wrapper.clientWidth}; } function patchDisplay(cm, from, to, intact, updateNumbersFrom) { var dims = getDimensions(cm); var display = cm.display, lineNumbers = cm.options.lineNumbers; if (!intact.length && (!webkit || !cm.display.currentWheelTarget)) removeChildren(display.lineDiv); var container = display.lineDiv, cur = container.firstChild; function rm(node) { var next = node.nextSibling; if (webkit && mac && cm.display.currentWheelTarget == node) { node.style.display = "none"; node.lineObj = null; } else { node.parentNode.removeChild(node); } return next; } var nextIntact = intact.shift(), lineN = from; cm.doc.iter(from, to, function(line) { if (nextIntact && nextIntact.to == lineN) nextIntact = intact.shift(); if (lineIsHidden(cm.doc, line)) { if (line.height != 0) updateLineHeight(line, 0); if (line.widgets && cur.previousSibling) for (var i = 0; i < line.widgets.length; ++i) { var w = line.widgets[i]; if (w.showIfHidden) { var prev = cur.previousSibling; if (/pre/i.test(prev.nodeName)) { var wrap = elt("div", null, null, "position: relative"); prev.parentNode.replaceChild(wrap, prev); wrap.appendChild(prev); prev = wrap; } var wnode = prev.appendChild(elt("div", [w.node], "CodeMirror-linewidget")); if (!w.handleMouseEvents) wnode.ignoreEvents = true; positionLineWidget(w, wnode, prev, dims); } } } else if (nextIntact && nextIntact.from <= lineN && nextIntact.to > lineN) { // This line is intact. Skip to the actual node. Update its // line number if needed. while (cur.lineObj != line) cur = rm(cur); if (lineNumbers && updateNumbersFrom <= lineN && cur.lineNumber) setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineN)); cur = cur.nextSibling; } else { // For lines with widgets, make an attempt to find and reuse // the existing element, so that widgets aren't needlessly // removed and re-inserted into the dom if (line.widgets) for (var j = 0, search = cur, reuse; search && j < 20; ++j, search = search.nextSibling) if (search.lineObj == line && /div/i.test(search.nodeName)) { reuse = search; break; } // This line needs to be generated. var lineNode = buildLineElement(cm, line, lineN, dims, reuse); if (lineNode != reuse) { container.insertBefore(lineNode, cur); } else { while (cur != reuse) cur = rm(cur); cur = cur.nextSibling; } lineNode.lineObj = line; } ++lineN; }); while (cur) cur = rm(cur); } function buildLineElement(cm, line, lineNo, dims, reuse) { var lineElement = lineContent(cm, line); var markers = line.gutterMarkers, display = cm.display, wrap; if (!cm.options.lineNumbers && !markers && !line.bgClass && !line.wrapClass && !line.widgets) return lineElement; // Lines with gutter elements, widgets or a background class need // to be wrapped again, and have the extra elements added to the // wrapper div if (reuse) { reuse.alignable = null; var isOk = true, widgetsSeen = 0, insertBefore = null; for (var n = reuse.firstChild, next; n; n = next) { next = n.nextSibling; if (!/\bCodeMirror-linewidget\b/.test(n.className)) { reuse.removeChild(n); } else { for (var i = 0; i < line.widgets.length; ++i) { var widget = line.widgets[i]; if (widget.node == n.firstChild) { if (!widget.above && !insertBefore) insertBefore = n; positionLineWidget(widget, n, reuse, dims); ++widgetsSeen; break; } } if (i == line.widgets.length) { isOk = false; break; } } } reuse.insertBefore(lineElement, insertBefore); if (isOk && widgetsSeen == line.widgets.length) { wrap = reuse; reuse.className = line.wrapClass || ""; } } if (!wrap) { wrap = elt("div", null, line.wrapClass, "position: relative"); wrap.appendChild(lineElement); } // Kludge to make sure the styled element lies behind the selection (by z-index) if (line.bgClass) wrap.insertBefore(elt("div", null, line.bgClass + " CodeMirror-linebackground"), wrap.firstChild); if (cm.options.lineNumbers || markers) { var gutterWrap = wrap.insertBefore(elt("div", null, null, "position: absolute; left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"), wrap.firstChild); if (cm.options.fixedGutter) (wrap.alignable || (wrap.alignable = [])).push(gutterWrap); if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) wrap.lineNumber = gutterWrap.appendChild( elt("div", lineNumberFor(cm.options, lineNo), "CodeMirror-linenumber CodeMirror-gutter-elt", "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: " + display.lineNumInnerWidth + "px")); if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) { var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id]; if (found) gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " + dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px")); } } if (ie_lt8) wrap.style.zIndex = 2; if (line.widgets && wrap != reuse) for (var i = 0, ws = line.widgets; i < ws.length; ++i) { var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget"); if (!widget.handleMouseEvents) node.ignoreEvents = true; positionLineWidget(widget, node, wrap, dims); if (widget.above) wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement); else wrap.appendChild(node); signalLater(widget, "redraw"); } return wrap; } function positionLineWidget(widget, node, wrap, dims) { if (widget.noHScroll) { (wrap.alignable || (wrap.alignable = [])).push(node); var width = dims.wrapperWidth; node.style.left = dims.fixedPos + "px"; if (!widget.coverGutter) { width -= dims.gutterTotalWidth; node.style.paddingLeft = dims.gutterTotalWidth + "px"; } node.style.width = width + "px"; } if (widget.coverGutter) { node.style.zIndex = 5; node.style.position = "relative"; if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px"; } } // SELECTION / CURSOR function updateSelection(cm) { var display = cm.display; var collapsed = posEq(cm.doc.sel.from, cm.doc.sel.to); if (collapsed || cm.options.showCursorWhenSelecting) updateSelectionCursor(cm); else display.cursor.style.display = display.otherCursor.style.display = "none"; if (!collapsed) updateSelectionRange(cm); else display.selectionDiv.style.display = "none"; // Move the hidden textarea near the cursor to prevent scrolling artifacts if (cm.options.moveInputWithCursor) { var headPos = cursorCoords(cm, cm.doc.sel.head, "div"); var wrapOff = getRect(display.wrapper), lineOff = getRect(display.lineDiv); display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10, headPos.top + lineOff.top - wrapOff.top)) + "px"; display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10, headPos.left + lineOff.left - wrapOff.left)) + "px"; } } // No selection, plain cursor function updateSelectionCursor(cm) { var display = cm.display, pos = cursorCoords(cm, cm.doc.sel.head, "div"); display.cursor.style.left = pos.left + "px"; display.cursor.style.top = pos.top + "px"; display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; display.cursor.style.display = ""; if (pos.other) { display.otherCursor.style.display = ""; display.otherCursor.style.left = pos.other.left + "px"; display.otherCursor.style.top = pos.other.top + "px"; display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; } else { display.otherCursor.style.display = "none"; } } // Highlight selection function updateSelectionRange(cm) { var display = cm.display, doc = cm.doc, sel = cm.doc.sel; var fragment = document.createDocumentFragment(); var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display); function add(left, top, width, bottom) { if (top < 0) top = 0; fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left + "px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) + "px; height: " + (bottom - top) + "px")); } function drawForLine(line, fromArg, toArg) { var lineObj = getLine(doc, line); var lineLen = lineObj.text.length; var start, end; function coords(ch, bias) { return charCoords(cm, Pos(line, ch), "div", lineObj, bias); } iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) { var leftPos = coords(from, "left"), rightPos, left, right; if (from == to) { rightPos = leftPos; left = right = leftPos.left; } else { rightPos = coords(to - 1, "right"); if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; } left = leftPos.left; right = rightPos.right; } if (fromArg == null && from == 0) left = pl; if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part add(left, leftPos.top, null, leftPos.bottom); left = pl; if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top); } if (toArg == null && to == lineLen) right = clientWidth; if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left) start = leftPos; if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right) end = rightPos; if (left < pl + 1) left = pl; add(left, rightPos.top, right - left, rightPos.bottom); }); return {start: start, end: end}; } if (sel.from.line == sel.to.line) { drawForLine(sel.from.line, sel.from.ch, sel.to.ch); } else { var fromLine = getLine(doc, sel.from.line), toLine = getLine(doc, sel.to.line); var singleVLine = visualLine(doc, fromLine) == visualLine(doc, toLine); var leftEnd = drawForLine(sel.from.line, sel.from.ch, singleVLine ? fromLine.text.length : null).end; var rightStart = drawForLine(sel.to.line, singleVLine ? 0 : null, sel.to.ch).start; if (singleVLine) { if (leftEnd.top < rightStart.top - 2) { add(leftEnd.right, leftEnd.top, null, leftEnd.bottom); add(pl, rightStart.top, rightStart.left, rightStart.bottom); } else { add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom); } } if (leftEnd.bottom < rightStart.top) add(pl, leftEnd.bottom, null, rightStart.top); } removeChildrenAndAdd(display.selectionDiv, fragment); display.selectionDiv.style.display = ""; } // Cursor-blinking function restartBlink(cm) { if (!cm.state.focused) return; var display = cm.display; clearInterval(display.blinker); var on = true; display.cursor.style.visibility = display.otherCursor.style.visibility = ""; display.blinker = setInterval(function() { display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden"; }, cm.options.cursorBlinkRate); } // HIGHLIGHT WORKER function startWorker(cm, time) { if (cm.doc.mode.startState && cm.doc.frontier < cm.display.showingTo) cm.state.highlight.set(time, bind(highlightWorker, cm)); } function highlightWorker(cm) { var doc = cm.doc; if (doc.frontier < doc.first) doc.frontier = doc.first; if (doc.frontier >= cm.display.showingTo) return; var end = +new Date + cm.options.workTime; var state = copyState(doc.mode, getStateBefore(cm, doc.frontier)); var changed = [], prevChange; doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.showingTo + 500), function(line) { if (doc.frontier >= cm.display.showingFrom) { // Visible var oldStyles = line.styles; line.styles = highlightLine(cm, line, state); var ischange = !oldStyles || oldStyles.length != line.styles.length; for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i]; if (ischange) { if (prevChange && prevChange.end == doc.frontier) prevChange.end++; else changed.push(prevChange = {start: doc.frontier, end: doc.frontier + 1}); } line.stateAfter = copyState(doc.mode, state); } else { processLine(cm, line, state); line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null; } ++doc.frontier; if (+new Date > end) { startWorker(cm, cm.options.workDelay); return true; } }); if (changed.length) operation(cm, function() { for (var i = 0; i < changed.length; ++i) regChange(this, changed[i].start, changed[i].end); })(); } // Finds the line to start with when starting a parse. Tries to // find a line with a stateAfter, so that it can start with a // valid state. If that fails, it returns the line with the // smallest indentation, which tends to need the least context to // parse correctly. function findStartLine(cm, n, precise) { var minindent, minline, doc = cm.doc; for (var search = n, lim = n - 100; search > lim; --search) { if (search <= doc.first) return doc.first; var line = getLine(doc, search - 1); if (line.stateAfter && (!precise || search <= doc.frontier)) return search; var indented = countColumn(line.text, null, cm.options.tabSize); if (minline == null || minindent > indented) { minline = search - 1; minindent = indented; } } return minline; } function getStateBefore(cm, n, precise) { var doc = cm.doc, display = cm.display; if (!doc.mode.startState) return true; var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter; if (!state) state = startState(doc.mode); else state = copyState(doc.mode, state); doc.iter(pos, n, function(line) { processLine(cm, line, state); var save = pos == n - 1 || pos % 5 == 0 || pos >= display.showingFrom && pos < display.showingTo; line.stateAfter = save ? copyState(doc.mode, state) : null; ++pos; }); return state; } // POSITION MEASUREMENT function paddingTop(display) {return display.lineSpace.offsetTop;} function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;} function paddingLeft(display) { var e = removeChildrenAndAdd(display.measure, elt("pre", null, null, "text-align: left")).appendChild(elt("span", "x")); return e.offsetLeft; } function measureChar(cm, line, ch, data, bias) { var dir = -1; data = data || measureLine(cm, line); for (var pos = ch;; pos += dir) { var r = data[pos]; if (r) break; if (dir < 0 && pos == 0) dir = 1; } bias = pos > ch ? "left" : pos < ch ? "right" : bias; if (bias == "left" && r.leftSide) r = r.leftSide; else if (bias == "right" && r.rightSide) r = r.rightSide; return {left: pos < ch ? r.right : r.left, right: pos > ch ? r.left : r.right, top: r.top, bottom: r.bottom}; } function findCachedMeasurement(cm, line) { var cache = cm.display.measureLineCache; for (var i = 0; i < cache.length; ++i) { var memo = cache[i]; if (memo.text == line.text && memo.markedSpans == line.markedSpans && cm.display.scroller.clientWidth == memo.width && memo.classes == line.textClass + "|" + line.bgClass + "|" + line.wrapClass) return memo; } } function clearCachedMeasurement(cm, line) { var exists = findCachedMeasurement(cm, line); if (exists) exists.text = exists.measure = exists.markedSpans = null; } function measureLine(cm, line) { // First look in the cache var cached = findCachedMeasurement(cm, line); if (cached) return cached.measure; // Failing that, recompute and store result in cache var measure = measureLineInner(cm, line); var cache = cm.display.measureLineCache; var memo = {text: line.text, width: cm.display.scroller.clientWidth, markedSpans: line.markedSpans, measure: measure, classes: line.textClass + "|" + line.bgClass + "|" + line.wrapClass}; if (cache.length == 16) cache[++cm.display.measureLineCachePos % 16] = memo; else cache.push(memo); return measure; } function measureLineInner(cm, line) { var display = cm.display, measure = emptyArray(line.text.length); var pre = lineContent(cm, line, measure, true); // IE does not cache element positions of inline elements between // calls to getBoundingClientRect. This makes the loop below, // which gathers the positions of all the characters on the line, // do an amount of layout work quadratic to the number of // characters. When line wrapping is off, we try to improve things // by first subdividing the line into a bunch of inline blocks, so // that IE can reuse most of the layout information from caches // for those blocks. This does interfere with line wrapping, so it // doesn't work when wrapping is on, but in that case the // situation is slightly better, since IE does cache line-wrapping // information and only recomputes per-line. if (ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) { var fragment = document.createDocumentFragment(); var chunk = 10, n = pre.childNodes.length; for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) { var wrap = elt("div", null, null, "display: inline-block"); for (var j = 0; j < chunk && n; ++j) { wrap.appendChild(pre.firstChild); --n; } fragment.appendChild(wrap); } pre.appendChild(fragment); } removeChildrenAndAdd(display.measure, pre); var outer = getRect(display.lineDiv); var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight; // Work around an IE7/8 bug where it will sometimes have randomly // replaced our pre with a clone at this point. if (ie_lt9 && display.measure.first != pre) removeChildrenAndAdd(display.measure, pre); function measureRect(rect) { var top = rect.top - outer.top, bot = rect.bottom - outer.top; if (bot > maxBot) bot = maxBot; if (top < 0) top = 0; for (var i = vranges.length - 2; i >= 0; i -= 2) { var rtop = vranges[i], rbot = vranges[i+1]; if (rtop > bot || rbot < top) continue; if (rtop <= top && rbot >= bot || top <= rtop && bot >= rbot || Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) { vranges[i] = Math.min(top, rtop); vranges[i+1] = Math.max(bot, rbot); break; } } if (i < 0) { i = vranges.length; vranges.push(top, bot); } return {left: rect.left - outer.left, right: rect.right - outer.left, top: i, bottom: null}; } function finishRect(rect) { rect.bottom = vranges[rect.top+1]; rect.top = vranges[rect.top]; } for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) { var node = cur, rect = null; // A widget might wrap, needs special care if (/\bCodeMirror-widget\b/.test(cur.className) && cur.getClientRects) { if (cur.firstChild.nodeType == 1) node = cur.firstChild; var rects = node.getClientRects(); if (rects.length > 1) { rect = data[i] = measureRect(rects[0]); rect.rightSide = measureRect(rects[rects.length - 1]); } } if (!rect) rect = data[i] = measureRect(getRect(node)); if (cur.measureRight) rect.right = getRect(cur.measureRight).left; if (cur.leftSide) rect.leftSide = measureRect(getRect(cur.leftSide)); } for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) { finishRect(cur); if (cur.leftSide) finishRect(cur.leftSide); if (cur.rightSide) finishRect(cur.rightSide); } return data; } function measureLineWidth(cm, line) { var hasBadSpan = false; if (line.markedSpans) for (var i = 0; i < line.markedSpans; ++i) { var sp = line.markedSpans[i]; if (sp.collapsed && (sp.to == null || sp.to == line.text.length)) hasBadSpan = true; } var cached = !hasBadSpan && findCachedMeasurement(cm, line); if (cached) return measureChar(cm, line, line.text.length, cached.measure, "right").right; var pre = lineContent(cm, line, null, true); var end = pre.appendChild(zeroWidthElement(cm.display.measure)); removeChildrenAndAdd(cm.display.measure, pre); return getRect(end).right - getRect(cm.display.lineDiv).left; } function clearCaches(cm) { cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0; cm.display.cachedCharWidth = cm.display.cachedTextHeight = null; if (!cm.options.lineWrapping) cm.display.maxLineChanged = true; cm.display.lineNumChars = null; } function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; } function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; } // Context is one of "line", "div" (display.lineDiv), "local"/null (editor), or "page" function intoCoordSystem(cm, lineObj, rect, context) { if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) { var size = widgetHeight(lineObj.widgets[i]); rect.top += size; rect.bottom += size; } if (context == "line") return rect; if (!context) context = "local"; var yOff = heightAtLine(cm, lineObj); if (context == "local") yOff += paddingTop(cm.display); else yOff -= cm.display.viewOffset; if (context == "page" || context == "window") { var lOff = getRect(cm.display.lineSpace); yOff += lOff.top + (context == "window" ? 0 : pageScrollY()); var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()); rect.left += xOff; rect.right += xOff; } rect.top += yOff; rect.bottom += yOff; return rect; } // Context may be "window", "page", "div", or "local"/null // Result is in "div" coords function fromCoordSystem(cm, coords, context) { if (context == "div") return coords; var left = coords.left, top = coords.top; // First move into "page" coordinate system if (context == "page") { left -= pageScrollX(); top -= pageScrollY(); } else if (context == "local" || !context) { var localBox = getRect(cm.display.sizer); left += localBox.left; top += localBox.top; } var lineSpaceBox = getRect(cm.display.lineSpace); return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}; } function charCoords(cm, pos, context, lineObj, bias) { if (!lineObj) lineObj = getLine(cm.doc, pos.line); return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, null, bias), context); } function cursorCoords(cm, pos, context, lineObj, measurement) { lineObj = lineObj || getLine(cm.doc, pos.line); if (!measurement) measurement = measureLine(cm, lineObj); function get(ch, right) { var m = measureChar(cm, lineObj, ch, measurement, right ? "right" : "left"); if (right) m.left = m.right; else m.right = m.left; return intoCoordSystem(cm, lineObj, m, context); } function getBidi(ch, partPos) { var part = order[partPos], right = part.level % 2; if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) { part = order[--partPos]; ch = bidiRight(part) - (part.level % 2 ? 0 : 1); right = true; } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) { part = order[++partPos]; ch = bidiLeft(part) - part.level % 2; right = false; } if (right && ch == part.to && ch > part.from) return get(ch - 1); return get(ch, right); } var order = getOrder(lineObj), ch = pos.ch; if (!order) return get(ch); var partPos = getBidiPartAt(order, ch); var val = getBidi(ch, partPos); if (bidiOther != null) val.other = getBidi(ch, bidiOther); return val; } function PosWithInfo(line, ch, outside, xRel) { var pos = new Pos(line, ch); pos.xRel = xRel; if (outside) pos.outside = true; return pos; } // Coords must be lineSpace-local function coordsChar(cm, x, y) { var doc = cm.doc; y += cm.display.viewOffset; if (y < 0) return PosWithInfo(doc.first, 0, true, -1); var lineNo = lineAtHeight(doc, y), last = doc.first + doc.size - 1; if (lineNo > last) return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1); if (x < 0) x = 0; for (;;) { var lineObj = getLine(doc, lineNo); var found = coordsCharInner(cm, lineObj, lineNo, x, y); var merged = collapsedSpanAtEnd(lineObj); var mergedPos = merged && merged.find(); if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0)) lineNo = mergedPos.to.line; else return found; } } function coordsCharInner(cm, lineObj, lineNo, x, y) { var innerOff = y - heightAtLine(cm, lineObj); var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth; var measurement = measureLine(cm, lineObj); function getX(ch) { var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, measurement); wrongLine = true; if (innerOff > sp.bottom) return sp.left - adjust; else if (innerOff < sp.top) return sp.left + adjust; else wrongLine = false; return sp.left; } var bidi = getOrder(lineObj), dist = lineObj.text.length; var from = lineLeft(lineObj), to = lineRight(lineObj); var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine; if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1); // Do a binary search between these bounds. for (;;) { if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) { var ch = x < fromX || x - fromX <= toX - x ? from : to; var xDiff = x - (ch == from ? fromX : toX); while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch; var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside, xDiff < 0 ? -1 : xDiff ? 1 : 0); return pos; } var step = Math.ceil(dist / 2), middle = from + step; if (bidi) { middle = from; for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1); } var middleX = getX(middle); if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;} else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;} } } var measureText; function textHeight(display) { if (display.cachedTextHeight != null) return display.cachedTextHeight; if (measureText == null) { measureText = elt("pre"); // Measure a bunch of lines, for browsers that compute // fractional heights. for (var i = 0; i < 49; ++i) { measureText.appendChild(document.createTextNode("x")); measureText.appendChild(elt("br")); } measureText.appendChild(document.createTextNode("x")); } removeChildrenAndAdd(display.measure, measureText); var height = measureText.offsetHeight / 50; if (height > 3) display.cachedTextHeight = height; removeChildren(display.measure); return height || 1; } function charWidth(display) { if (display.cachedCharWidth != null) return display.cachedCharWidth; var anchor = elt("span", "x"); var pre = elt("pre", [anchor]); removeChildrenAndAdd(display.measure, pre); var width = anchor.offsetWidth; if (width > 2) display.cachedCharWidth = width; return width || 10; } // OPERATIONS // Operations are used to wrap changes in such a way that each // change won't have to update the cursor and display (which would // be awkward, slow, and error-prone), but instead updates are // batched and then all combined and executed at once. var nextOpId = 0; function startOperation(cm) { cm.curOp = { // An array of ranges of lines that have to be updated. See // updateDisplay. changes: [], forceUpdate: false, updateInput: null, userSelChange: null, textChanged: null, selectionChanged: false, cursorActivity: false, updateMaxLine: false, updateScrollPos: false, id: ++nextOpId }; if (!delayedCallbackDepth++) delayedCallbacks = []; } function endOperation(cm) { var op = cm.curOp, doc = cm.doc, display = cm.display; cm.curOp = null; if (op.updateMaxLine) computeMaxLength(cm); if (display.maxLineChanged && !cm.options.lineWrapping && display.maxLine) { var width = measureLineWidth(cm, display.maxLine); display.sizer.style.minWidth = Math.max(0, width + 3 + scrollerCutOff) + "px"; display.maxLineChanged = false; var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + display.sizer.offsetWidth - display.scroller.clientWidth); if (maxScrollLeft < doc.scrollLeft && !op.updateScrollPos) setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true); } var newScrollPos, updated; if (op.updateScrollPos) { newScrollPos = op.updateScrollPos; } else if (op.selectionChanged && display.scroller.clientHeight) { // don't rescroll if not visible var coords = cursorCoords(cm, doc.sel.head); newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom); } if (op.changes.length || op.forceUpdate || newScrollPos && newScrollPos.scrollTop != null) { updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop, op.forceUpdate); if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop; } if (!updated && op.selectionChanged) updateSelection(cm); if (op.updateScrollPos) { display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = newScrollPos.scrollTop; display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = newScrollPos.scrollLeft; alignHorizontally(cm); if (op.scrollToPos) scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos), op.scrollToPosMargin); } else if (newScrollPos) { scrollCursorIntoView(cm); } if (op.selectionChanged) restartBlink(cm); if (cm.state.focused && op.updateInput) resetInput(cm, op.userSelChange); var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers; if (hidden) for (var i = 0; i < hidden.length; ++i) if (!hidden[i].lines.length) signal(hidden[i], "hide"); if (unhidden) for (var i = 0; i < unhidden.length; ++i) if (unhidden[i].lines.length) signal(unhidden[i], "unhide"); var delayed; if (!--delayedCallbackDepth) { delayed = delayedCallbacks; delayedCallbacks = null; } if (op.textChanged) signal(cm, "change", cm, op.textChanged); if (op.cursorActivity) signal(cm, "cursorActivity", cm); if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i](); } // Wraps a function in an operation. Returns the wrapped function. function operation(cm1, f) { return function() { var cm = cm1 || this, withOp = !cm.curOp; if (withOp) startOperation(cm); try { var result = f.apply(cm, arguments); } finally { if (withOp) endOperation(cm); } return result; }; } function docOperation(f) { return function() { var withOp = this.cm && !this.cm.curOp, result; if (withOp) startOperation(this.cm); try { result = f.apply(this, arguments); } finally { if (withOp) endOperation(this.cm); } return result; }; } function runInOp(cm, f) { var withOp = !cm.curOp, result; if (withOp) startOperation(cm); try { result = f(); } finally { if (withOp) endOperation(cm); } return result; } function regChange(cm, from, to, lendiff) { if (from == null) from = cm.doc.first; if (to == null) to = cm.doc.first + cm.doc.size; cm.curOp.changes.push({from: from, to: to, diff: lendiff}); } // INPUT HANDLING function slowPoll(cm) { if (cm.display.pollingFast) return; cm.display.poll.set(cm.options.pollInterval, function() { readInput(cm); if (cm.state.focused) slowPoll(cm); }); } function fastPoll(cm) { var missed = false; cm.display.pollingFast = true; function p() { var changed = readInput(cm); if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);} else {cm.display.pollingFast = false; slowPoll(cm);} } cm.display.poll.set(20, p); } // prevInput is a hack to work with IME. If we reset the textarea // on every change, that breaks IME. So we look for changes // compared to the previous content instead. (Modern browsers have // events that indicate IME taking place, but these are not widely // supported or compatible enough yet to rely on.) function readInput(cm) { var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc, sel = doc.sel; if (!cm.state.focused || hasSelection(input) || isReadOnly(cm) || cm.state.disableInput) return false; var text = input.value; if (text == prevInput && posEq(sel.from, sel.to)) return false; if (ie && !ie_lt9 && cm.display.inputHasSelection === text) { resetInput(cm, true); return false; } var withOp = !cm.curOp; if (withOp) startOperation(cm); sel.shift = false; var same = 0, l = Math.min(prevInput.length, text.length); while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same; var from = sel.from, to = sel.to; if (same < prevInput.length) from = Pos(from.line, from.ch - (prevInput.length - same)); else if (cm.state.overwrite && posEq(from, to) && !cm.state.pasteIncoming) to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + (text.length - same))); var updateInput = cm.curOp.updateInput; var changeEvent = {from: from, to: to, text: splitLines(text.slice(same)), origin: cm.state.pasteIncoming ? "paste" : "+input"}; makeChange(cm.doc, changeEvent, "end"); cm.curOp.updateInput = updateInput; signalLater(cm, "inputRead", cm, changeEvent); if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = ""; else cm.display.prevInput = text; if (withOp) endOperation(cm); cm.state.pasteIncoming = false; return true; } function resetInput(cm, user) { var minimal, selected, doc = cm.doc; if (!posEq(doc.sel.from, doc.sel.to)) { cm.display.prevInput = ""; minimal = hasCopyEvent && (doc.sel.to.line - doc.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000); var content = minimal ? "-" : selected || cm.getSelection(); cm.display.input.value = content; if (cm.state.focused) selectInput(cm.display.input); if (ie && !ie_lt9) cm.display.inputHasSelection = content; } else if (user) { cm.display.prevInput = cm.display.input.value = ""; if (ie && !ie_lt9) cm.display.inputHasSelection = null; } cm.display.inaccurateSelection = minimal; } function focusInput(cm) { if (cm.options.readOnly != "nocursor" && (!mobile || document.activeElement != cm.display.input)) cm.display.input.focus(); } function isReadOnly(cm) { return cm.options.readOnly || cm.doc.cantEdit; } // EVENT HANDLERS function registerEventHandlers(cm) { var d = cm.display; on(d.scroller, "mousedown", operation(cm, onMouseDown)); if (ie) on(d.scroller, "dblclick", operation(cm, function(e) { if (signalDOMEvent(cm, e)) return; var pos = posFromMouse(cm, e); if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return; e_preventDefault(e); var word = findWordAt(getLine(cm.doc, pos.line).text, pos); extendSelection(cm.doc, word.from, word.to); })); else on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); }); on(d.lineSpace, "selectstart", function(e) { if (!eventInWidget(d, e)) e_preventDefault(e); }); // Gecko browsers fire contextmenu *after* opening the menu, at // which point we can't mess with it anymore. Context menu is // handled in onMouseDown for Gecko. if (!captureMiddleClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);}); on(d.scroller, "scroll", function() { if (d.scroller.clientHeight) { setScrollTop(cm, d.scroller.scrollTop); setScrollLeft(cm, d.scroller.scrollLeft, true); signal(cm, "scroll", cm); } }); on(d.scrollbarV, "scroll", function() { if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop); }); on(d.scrollbarH, "scroll", function() { if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft); }); on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);}); on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);}); function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); } on(d.scrollbarH, "mousedown", reFocus); on(d.scrollbarV, "mousedown", reFocus); // Prevent wrapper from ever scrolling on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }); var resizeTimer; function onResize() { if (resizeTimer == null) resizeTimer = setTimeout(function() { resizeTimer = null; // Might be a text scaling operation, clear size caches. d.cachedCharWidth = d.cachedTextHeight = knownScrollbarWidth = null; clearCaches(cm); runInOp(cm, bind(regChange, cm)); }, 100); } on(window, "resize", onResize); // Above handler holds on to the editor and its data structures. // Here we poll to unregister it when the editor is no longer in // the document, so that it can be garbage-collected. function unregister() { for (var p = d.wrapper.parentNode; p && p != document.body; p = p.parentNode) {} if (p) setTimeout(unregister, 5000); else off(window, "resize", onResize); } setTimeout(unregister, 5000); on(d.input, "keyup", operation(cm, function(e) { if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; if (e.keyCode == 16) cm.doc.sel.shift = false; })); on(d.input, "input", bind(fastPoll, cm)); on(d.input, "keydown", operation(cm, onKeyDown)); on(d.input, "keypress", operation(cm, onKeyPress)); on(d.input, "focus", bind(onFocus, cm)); on(d.input, "blur", bind(onBlur, cm)); function drag_(e) { if (signalDOMEvent(cm, e) || cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return; e_stop(e); } if (cm.options.dragDrop) { on(d.scroller, "dragstart", function(e){onDragStart(cm, e);}); on(d.scroller, "dragenter", drag_); on(d.scroller, "dragover", drag_); on(d.scroller, "drop", operation(cm, onDrop)); } on(d.scroller, "paste", function(e){ if (eventInWidget(d, e)) return; focusInput(cm); fastPoll(cm); }); on(d.input, "paste", function() { cm.state.pasteIncoming = true; fastPoll(cm); }); function prepareCopy() { if (d.inaccurateSelection) { d.prevInput = ""; d.inaccurateSelection = false; d.input.value = cm.getSelection(); selectInput(d.input); } } on(d.input, "cut", prepareCopy); on(d.input, "copy", prepareCopy); // Needed to handle Tab key in KHTML if (khtml) on(d.sizer, "mouseup", function() { if (document.activeElement == d.input) d.input.blur(); focusInput(cm); }); } function eventInWidget(display, e) { for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { if (!n || n.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true; } } function posFromMouse(cm, e, liberal) { var display = cm.display; if (!liberal) { var target = e_target(e); if (target == display.scrollbarH || target == display.scrollbarH.firstChild || target == display.scrollbarV || target == display.scrollbarV.firstChild || target == display.scrollbarFiller || target == display.gutterFiller) return null; } var x, y, space = getRect(display.lineSpace); // Fails unpredictably on IE[67] when mouse is dragged around quickly. try { x = e.clientX; y = e.clientY; } catch (e) { return null; } return coordsChar(cm, x - space.left, y - space.top); } var lastClick, lastDoubleClick; function onMouseDown(e) { if (signalDOMEvent(this, e)) return; var cm = this, display = cm.display, doc = cm.doc, sel = doc.sel; sel.shift = e.shiftKey; if (eventInWidget(display, e)) { if (!webkit) { display.scroller.draggable = false; setTimeout(function(){display.scroller.draggable = true;}, 100); } return; } if (clickInGutter(cm, e)) return; var start = posFromMouse(cm, e); switch (e_button(e)) { case 3: if (captureMiddleClick) onContextMenu.call(cm, cm, e); return; case 2: if (start) extendSelection(cm.doc, start); setTimeout(bind(focusInput, cm), 20); e_preventDefault(e); return; } // For button 1, if it was clicked inside the editor // (posFromMouse returning non-null), we have to adjust the // selection. if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;} if (!cm.state.focused) onFocus(cm); var now = +new Date, type = "single"; if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) { type = "triple"; e_preventDefault(e); setTimeout(bind(focusInput, cm), 20); selectLine(cm, start.line); } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) { type = "double"; lastDoubleClick = {time: now, pos: start}; e_preventDefault(e); var word = findWordAt(getLine(doc, start.line).text, start); extendSelection(cm.doc, word.from, word.to); } else { lastClick = {time: now, pos: start}; } var last = start; if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) && !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") { var dragEnd = operation(cm, function(e2) { if (webkit) display.scroller.draggable = false; cm.state.draggingText = false; off(document, "mouseup", dragEnd); off(display.scroller, "drop", dragEnd); if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) { e_preventDefault(e2); extendSelection(cm.doc, start); focusInput(cm); } }); // Let the drag handler handle this. if (webkit) display.scroller.draggable = true; cm.state.draggingText = dragEnd; // IE's approach to draggable if (display.scroller.dragDrop) display.scroller.dragDrop(); on(document, "mouseup", dragEnd); on(display.scroller, "drop", dragEnd); return; } e_preventDefault(e); if (type == "single") extendSelection(cm.doc, clipPos(doc, start)); var startstart = sel.from, startend = sel.to, lastPos = start; function doSelect(cur) { if (posEq(lastPos, cur)) return; lastPos = cur; if (type == "single") { extendSelection(cm.doc, clipPos(doc, start), cur); return; } startstart = clipPos(doc, startstart); startend = clipPos(doc, startend); if (type == "double") { var word = findWordAt(getLine(doc, cur.line).text, cur); if (posLess(cur, startstart)) extendSelection(cm.doc, word.from, startend); else extendSelection(cm.doc, startstart, word.to); } else if (type == "triple") { if (posLess(cur, startstart)) extendSelection(cm.doc, startend, clipPos(doc, Pos(cur.line, 0))); else extendSelection(cm.doc, startstart, clipPos(doc, Pos(cur.line + 1, 0))); } } var editorSize = getRect(display.wrapper); // Used to ensure timeout re-tries don't fire when another extend // happened in the meantime (clearTimeout isn't reliable -- at // least on Chrome, the timeouts still happen even when cleared, // if the clear happens after their scheduled firing time). var counter = 0; function extend(e) { var curCount = ++counter; var cur = posFromMouse(cm, e, true); if (!cur) return; if (!posEq(cur, last)) { if (!cm.state.focused) onFocus(cm); last = cur; doSelect(cur); var visible = visibleLines(display, doc); if (cur.line >= visible.to || cur.line < visible.from) setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150); } else { var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0; if (outside) setTimeout(operation(cm, function() { if (counter != curCount) return; display.scroller.scrollTop += outside; extend(e); }), 50); } } function done(e) { counter = Infinity; e_preventDefault(e); focusInput(cm); off(document, "mousemove", move); off(document, "mouseup", up); } var move = operation(cm, function(e) { if (!ie && !e_button(e)) done(e); else extend(e); }); var up = operation(cm, done); on(document, "mousemove", move); on(document, "mouseup", up); } function clickInGutter(cm, e) { var display = cm.display; try { var mX = e.clientX, mY = e.clientY; } catch(e) { return false; } if (mX >= Math.floor(getRect(display.gutters).right)) return false; e_preventDefault(e); if (!hasHandler(cm, "gutterClick")) return true; var lineBox = getRect(display.lineDiv); if (mY > lineBox.bottom) return true; mY -= lineBox.top - display.viewOffset; for (var i = 0; i < cm.options.gutters.length; ++i) { var g = display.gutters.childNodes[i]; if (g && getRect(g).right >= mX) { var line = lineAtHeight(cm.doc, mY); var gutter = cm.options.gutters[i]; signalLater(cm, "gutterClick", cm, line, gutter, e); break; } } return true; } // Kludge to work around strange IE behavior where it'll sometimes // re-fire a series of drag-related events right after the drop (#1551) var lastDrop = 0; function onDrop(e) { var cm = this; if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e) || (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e)))) return; e_preventDefault(e); if (ie) lastDrop = +new Date; var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; if (!pos || isReadOnly(cm)) return; if (files && files.length && window.FileReader && window.File) { var n = files.length, text = Array(n), read = 0; var loadFile = function(file, i) { var reader = new FileReader; reader.onload = function() { text[i] = reader.result; if (++read == n) { pos = clipPos(cm.doc, pos); makeChange(cm.doc, {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}, "around"); } }; reader.readAsText(file); }; for (var i = 0; i < n; ++i) loadFile(files[i], i); } else { // Don't do a replace if the drop happened inside of the selected text. if (cm.state.draggingText && !(posLess(pos, cm.doc.sel.from) || posLess(cm.doc.sel.to, pos))) { cm.state.draggingText(e); // Ensure the editor is re-focused setTimeout(bind(focusInput, cm), 20); return; } try { var text = e.dataTransfer.getData("Text"); if (text) { var curFrom = cm.doc.sel.from, curTo = cm.doc.sel.to; setSelection(cm.doc, pos, pos); if (cm.state.draggingText) replaceRange(cm.doc, "", curFrom, curTo, "paste"); cm.replaceSelection(text, null, "paste"); focusInput(cm); onFocus(cm); } } catch(e){} } } function onDragStart(cm, e) { if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; } if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return; var txt = cm.getSelection(); e.dataTransfer.setData("Text", txt); // Use dummy image instead of default browsers image. // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. if (e.dataTransfer.setDragImage && !safari) { var img = elt("img", null, null, "position: fixed; left: 0; top: 0;"); if (opera) { img.width = img.height = 1; cm.display.wrapper.appendChild(img); // Force a relayout, or Opera won't use our image for some obscure reason img._top = img.offsetTop; } e.dataTransfer.setDragImage(img, 0, 0); if (opera) img.parentNode.removeChild(img); } } function setScrollTop(cm, val) { if (Math.abs(cm.doc.scrollTop - val) < 2) return; cm.doc.scrollTop = val; if (!gecko) updateDisplay(cm, [], val); if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val; if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val; if (gecko) updateDisplay(cm, []); startWorker(cm, 100); } function setScrollLeft(cm, val, isScroller) { if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return; val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth); cm.doc.scrollLeft = val; alignHorizontally(cm); if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val; if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val; } // Since the delta values reported on mouse wheel events are // unstandardized between browsers and even browser versions, and // generally horribly unpredictable, this code starts by measuring // the scroll effect that the first few mouse wheel events have, // and, from that, detects the way it can convert deltas to pixel // offsets afterwards. // // The reason we want to know the amount a wheel event will scroll // is that it gives us a chance to update the display before the // actual scrolling happens, reducing flickering. var wheelSamples = 0, wheelPixelsPerUnit = null; // Fill in a browser-detected starting value on browsers where we // know one. These don't have to be accurate -- the result of them // being wrong would just be a slight flicker on the first wheel // scroll (if it is large enough). if (ie) wheelPixelsPerUnit = -.53; else if (gecko) wheelPixelsPerUnit = 15; else if (chrome) wheelPixelsPerUnit = -.7; else if (safari) wheelPixelsPerUnit = -1/3; function onScrollWheel(cm, e) { var dx = e.wheelDeltaX, dy = e.wheelDeltaY; if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail; if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail; else if (dy == null) dy = e.wheelDelta; var display = cm.display, scroll = display.scroller; // Quit if there's nothing to scroll here if (!(dx && scroll.scrollWidth > scroll.clientWidth || dy && scroll.scrollHeight > scroll.clientHeight)) return; // Webkit browsers on OS X abort momentum scrolls when the target // of the scroll event is removed from the scrollable element. // This hack (see related code in patchDisplay) makes sure the // element is kept around. if (dy && mac && webkit) { for (var cur = e.target; cur != scroll; cur = cur.parentNode) { if (cur.lineObj) { cm.display.currentWheelTarget = cur; break; } } } // On some browsers, horizontal scrolling will cause redraws to // happen before the gutter has been realigned, causing it to // wriggle around in a most unseemly way. When we have an // estimated pixels/delta value, we just handle horizontal // scrolling entirely here. It'll be slightly off from native, but // better than glitching out. if (dx && !gecko && !opera && wheelPixelsPerUnit != null) { if (dy) setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))); setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth))); e_preventDefault(e); display.wheelStartX = null; // Abort measurement, if in progress return; } if (dy && wheelPixelsPerUnit != null) { var pixels = dy * wheelPixelsPerUnit; var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight; if (pixels < 0) top = Math.max(0, top + pixels - 50); else bot = Math.min(cm.doc.height, bot + pixels + 50); updateDisplay(cm, [], {top: top, bottom: bot}); } if (wheelSamples < 20) { if (display.wheelStartX == null) { display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop; display.wheelDX = dx; display.wheelDY = dy; setTimeout(function() { if (display.wheelStartX == null) return; var movedX = scroll.scrollLeft - display.wheelStartX; var movedY = scroll.scrollTop - display.wheelStartY; var sample = (movedY && display.wheelDY && movedY / display.wheelDY) || (movedX && display.wheelDX && movedX / display.wheelDX); display.wheelStartX = display.wheelStartY = null; if (!sample) return; wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1); ++wheelSamples; }, 200); } else { display.wheelDX += dx; display.wheelDY += dy; } } } function doHandleBinding(cm, bound, dropShift) { if (typeof bound == "string") { bound = commands[bound]; if (!bound) return false; } // Ensure previous input has been read, so that the handler sees a // consistent view of the document if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false; var doc = cm.doc, prevShift = doc.sel.shift, done = false; try { if (isReadOnly(cm)) cm.state.suppressEdits = true; if (dropShift) doc.sel.shift = false; done = bound(cm) != Pass; } finally { doc.sel.shift = prevShift; cm.state.suppressEdits = false; } return done; } function allKeyMaps(cm) { var maps = cm.state.keyMaps.slice(0); if (cm.options.extraKeys) maps.push(cm.options.extraKeys); maps.push(cm.options.keyMap); return maps; } var maybeTransition; function handleKeyBinding(cm, e) { // Handle auto keymap transitions var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto; clearTimeout(maybeTransition); if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() { if (getKeyMap(cm.options.keyMap) == startMap) { cm.options.keyMap = (next.call ? next.call(null, cm) : next); keyMapChanged(cm); } }, 50); var name = keyName(e, true), handled = false; if (!name) return false; var keymaps = allKeyMaps(cm); if (e.shiftKey) { // First try to resolve full name (including 'Shift-'). Failing // that, see if there is a cursor-motion command (starting with // 'go') bound to the keyname without 'Shift-'. handled = lookupKey("Shift-" + name, keymaps, function(b) {return doHandleBinding(cm, b, true);}) || lookupKey(name, keymaps, function(b) { if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) return doHandleBinding(cm, b); }); } else { handled = lookupKey(name, keymaps, function(b) { return doHandleBinding(cm, b); }); } if (handled) { e_preventDefault(e); restartBlink(cm); if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; } signalLater(cm, "keyHandled", cm, name, e); } return handled; } function handleCharBinding(cm, e, ch) { var handled = lookupKey("'" + ch + "'", allKeyMaps(cm), function(b) { return doHandleBinding(cm, b, true); }); if (handled) { e_preventDefault(e); restartBlink(cm); signalLater(cm, "keyHandled", cm, "'" + ch + "'", e); } return handled; } var lastStoppedKey = null; function onKeyDown(e) { var cm = this; if (!cm.state.focused) onFocus(cm); if (ie && e.keyCode == 27) { e.returnValue = false; } if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; var code = e.keyCode; // IE does strange things with escape. cm.doc.sel.shift = code == 16 || e.shiftKey; // First give onKeyEvent option a chance to handle this. var handled = handleKeyBinding(cm, e); if (opera) { lastStoppedKey = handled ? code : null; // Opera has no cut event... we try to at least catch the key combo if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) cm.replaceSelection(""); } } function onKeyPress(e) { var cm = this; if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; var keyCode = e.keyCode, charCode = e.charCode; if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;} if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return; var ch = String.fromCharCode(charCode == null ? keyCode : charCode); if (this.options.electricChars && this.doc.mode.electricChars && this.options.smartIndent && !isReadOnly(this) && this.doc.mode.electricChars.indexOf(ch) > -1) setTimeout(operation(cm, function() {indentLine(cm, cm.doc.sel.to.line, "smart");}), 75); if (handleCharBinding(cm, e, ch)) return; if (ie && !ie_lt9) cm.display.inputHasSelection = null; fastPoll(cm); } function onFocus(cm) { if (cm.options.readOnly == "nocursor") return; if (!cm.state.focused) { signal(cm, "focus", cm); cm.state.focused = true; if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1) cm.display.wrapper.className += " CodeMirror-focused"; resetInput(cm, true); } slowPoll(cm); restartBlink(cm); } function onBlur(cm) { if (cm.state.focused) { signal(cm, "blur", cm); cm.state.focused = false; cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-focused", ""); } clearInterval(cm.display.blinker); setTimeout(function() {if (!cm.state.focused) cm.doc.sel.shift = false;}, 150); } var detectingSelectAll; function onContextMenu(cm, e) { if (signalDOMEvent(cm, e, "contextmenu")) return; var display = cm.display, sel = cm.doc.sel; if (eventInWidget(display, e)) return; var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; if (!pos || opera) return; // Opera is difficult. if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)) operation(cm, setSelection)(cm.doc, pos, pos); var oldCSS = display.input.style.cssText; display.inputDiv.style.position = "absolute"; display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) + "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; outline: none;" + "border-width: 0; outline: none; overflow: hidden; opacity: .05; -ms-opacity: .05; filter: alpha(opacity=5);"; focusInput(cm); resetInput(cm, true); // Adds "Select all" to context menu in FF if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " "; function prepareSelectAllHack() { if (display.input.selectionStart != null) { var extval = display.input.value = " " + (posEq(sel.from, sel.to) ? "" : display.input.value); display.prevInput = " "; display.input.selectionStart = 1; display.input.selectionEnd = extval.length; } } function rehide() { display.inputDiv.style.position = "relative"; display.input.style.cssText = oldCSS; if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos; slowPoll(cm); // Try to detect the user choosing select-all if (display.input.selectionStart != null) { if (!ie || ie_lt9) prepareSelectAllHack(); clearTimeout(detectingSelectAll); var i = 0, poll = function(){ if (display.prevInput == " " && display.input.selectionStart == 0) operation(cm, commands.selectAll)(cm); else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500); else resetInput(cm); }; detectingSelectAll = setTimeout(poll, 200); } } if (ie && !ie_lt9) prepareSelectAllHack(); if (captureMiddleClick) { e_stop(e); var mouseup = function() { off(window, "mouseup", mouseup); setTimeout(rehide, 20); }; on(window, "mouseup", mouseup); } else { setTimeout(rehide, 50); } } // UPDATING var changeEnd = CodeMirror.changeEnd = function(change) { if (!change.text) return change.to; return Pos(change.from.line + change.text.length - 1, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)); }; // Make sure a position will be valid after the given change. function clipPostChange(doc, change, pos) { if (!posLess(change.from, pos)) return clipPos(doc, pos); var diff = (change.text.length - 1) - (change.to.line - change.from.line); if (pos.line > change.to.line + diff) { var preLine = pos.line - diff, lastLine = doc.first + doc.size - 1; if (preLine > lastLine) return Pos(lastLine, getLine(doc, lastLine).text.length); return clipToLen(pos, getLine(doc, preLine).text.length); } if (pos.line == change.to.line + diff) return clipToLen(pos, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0) + getLine(doc, change.to.line).text.length - change.to.ch); var inside = pos.line - change.from.line; return clipToLen(pos, change.text[inside].length + (inside ? 0 : change.from.ch)); } // Hint can be null|"end"|"start"|"around"|{anchor,head} function computeSelAfterChange(doc, change, hint) { if (hint && typeof hint == "object") // Assumed to be {anchor, head} object return {anchor: clipPostChange(doc, change, hint.anchor), head: clipPostChange(doc, change, hint.head)}; if (hint == "start") return {anchor: change.from, head: change.from}; var end = changeEnd(change); if (hint == "around") return {anchor: change.from, head: end}; if (hint == "end") return {anchor: end, head: end}; // hint is null, leave the selection alone as much as possible var adjustPos = function(pos) { if (posLess(pos, change.from)) return pos; if (!posLess(change.to, pos)) return end; var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch; if (pos.line == change.to.line) ch += end.ch - change.to.ch; return Pos(line, ch); }; return {anchor: adjustPos(doc.sel.anchor), head: adjustPos(doc.sel.head)}; } function filterChange(doc, change, update) { var obj = { canceled: false, from: change.from, to: change.to, text: change.text, origin: change.origin, cancel: function() { this.canceled = true; } }; if (update) obj.update = function(from, to, text, origin) { if (from) this.from = clipPos(doc, from); if (to) this.to = clipPos(doc, to); if (text) this.text = text; if (origin !== undefined) this.origin = origin; }; signal(doc, "beforeChange", doc, obj); if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj); if (obj.canceled) return null; return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}; } // Replace the range from from to to by the strings in replacement. // change is a {from, to, text [, origin]} object function makeChange(doc, change, selUpdate, ignoreReadOnly) { if (doc.cm) { if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, selUpdate, ignoreReadOnly); if (doc.cm.state.suppressEdits) return; } if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { change = filterChange(doc, change, true); if (!change) return; } // Possibly split or suppress the update based on the presence // of read-only spans in its range. var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to); if (split) { for (var i = split.length - 1; i >= 1; --i) makeChangeNoReadonly(doc, {from: split[i].from, to: split[i].to, text: [""]}); if (split.length) makeChangeNoReadonly(doc, {from: split[0].from, to: split[0].to, text: change.text}, selUpdate); } else { makeChangeNoReadonly(doc, change, selUpdate); } } function makeChangeNoReadonly(doc, change, selUpdate) { var selAfter = computeSelAfterChange(doc, change, selUpdate); addToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN); makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)); var rebased = []; linkedDocs(doc, function(doc, sharedHist) { if (!sharedHist && indexOf(rebased, doc.history) == -1) { rebaseHist(doc.history, change); rebased.push(doc.history); } makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)); }); } function makeChangeFromHistory(doc, type) { if (doc.cm && doc.cm.state.suppressEdits) return; var hist = doc.history; var event = (type == "undo" ? hist.done : hist.undone).pop(); if (!event) return; var anti = {changes: [], anchorBefore: event.anchorAfter, headBefore: event.headAfter, anchorAfter: event.anchorBefore, headAfter: event.headBefore, generation: hist.generation}; (type == "undo" ? hist.undone : hist.done).push(anti); hist.generation = event.generation || ++hist.maxGeneration; var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange"); for (var i = event.changes.length - 1; i >= 0; --i) { var change = event.changes[i]; change.origin = type; if (filter && !filterChange(doc, change, false)) { (type == "undo" ? hist.done : hist.undone).length = 0; return; } anti.changes.push(historyChangeFromChange(doc, change)); var after = i ? computeSelAfterChange(doc, change, null) : {anchor: event.anchorBefore, head: event.headBefore}; makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)); var rebased = []; linkedDocs(doc, function(doc, sharedHist) { if (!sharedHist && indexOf(rebased, doc.history) == -1) { rebaseHist(doc.history, change); rebased.push(doc.history); } makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)); }); } } function shiftDoc(doc, distance) { function shiftPos(pos) {return Pos(pos.line + distance, pos.ch);} doc.first += distance; if (doc.cm) regChange(doc.cm, doc.first, doc.first, distance); doc.sel.head = shiftPos(doc.sel.head); doc.sel.anchor = shiftPos(doc.sel.anchor); doc.sel.from = shiftPos(doc.sel.from); doc.sel.to = shiftPos(doc.sel.to); } function makeChangeSingleDoc(doc, change, selAfter, spans) { if (doc.cm && !doc.cm.curOp) return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans); if (change.to.line < doc.first) { shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)); return; } if (change.from.line > doc.lastLine()) return; // Clip the change to the size of this doc if (change.from.line < doc.first) { var shift = change.text.length - 1 - (doc.first - change.from.line); shiftDoc(doc, shift); change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), text: [lst(change.text)], origin: change.origin}; } var last = doc.lastLine(); if (change.to.line > last) { change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), text: [change.text[0]], origin: change.origin}; } change.removed = getBetween(doc, change.from, change.to); if (!selAfter) selAfter = computeSelAfterChange(doc, change, null); if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans, selAfter); else updateDoc(doc, change, spans, selAfter); } function makeChangeSingleDocInEditor(cm, change, spans, selAfter) { var doc = cm.doc, display = cm.display, from = change.from, to = change.to; var recomputeMaxLength = false, checkWidthStart = from.line; if (!cm.options.lineWrapping) { checkWidthStart = lineNo(visualLine(doc, getLine(doc, from.line))); doc.iter(checkWidthStart, to.line + 1, function(line) { if (line == display.maxLine) { recomputeMaxLength = true; return true; } }); } if (!posLess(doc.sel.head, change.from) && !posLess(change.to, doc.sel.head)) cm.curOp.cursorActivity = true; updateDoc(doc, change, spans, selAfter, estimateHeight(cm)); if (!cm.options.lineWrapping) { doc.iter(checkWidthStart, from.line + change.text.length, function(line) { var len = lineLength(doc, line); if (len > display.maxLineLength) { display.maxLine = line; display.maxLineLength = len; display.maxLineChanged = true; recomputeMaxLength = false; } }); if (recomputeMaxLength) cm.curOp.updateMaxLine = true; } // Adjust frontier, schedule worker doc.frontier = Math.min(doc.frontier, from.line); startWorker(cm, 400); var lendiff = change.text.length - (to.line - from.line) - 1; // Remember that these lines changed, for updating the display regChange(cm, from.line, to.line + 1, lendiff); if (hasHandler(cm, "change")) { var changeObj = {from: from, to: to, text: change.text, removed: change.removed, origin: change.origin}; if (cm.curOp.textChanged) { for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {} cur.next = changeObj; } else cm.curOp.textChanged = changeObj; } } function replaceRange(doc, code, from, to, origin) { if (!to) to = from; if (posLess(to, from)) { var tmp = to; to = from; from = tmp; } if (typeof code == "string") code = splitLines(code); makeChange(doc, {from: from, to: to, text: code, origin: origin}, null); } // POSITION OBJECT function Pos(line, ch) { if (!(this instanceof Pos)) return new Pos(line, ch); this.line = line; this.ch = ch; } CodeMirror.Pos = Pos; function posEq(a, b) {return a.line == b.line && a.ch == b.ch;} function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);} function copyPos(x) {return Pos(x.line, x.ch);} // SELECTION function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));} function clipPos(doc, pos) { if (pos.line < doc.first) return Pos(doc.first, 0); var last = doc.first + doc.size - 1; if (pos.line > last) return Pos(last, getLine(doc, last).text.length); return clipToLen(pos, getLine(doc, pos.line).text.length); } function clipToLen(pos, linelen) { var ch = pos.ch; if (ch == null || ch > linelen) return Pos(pos.line, linelen); else if (ch < 0) return Pos(pos.line, 0); else return pos; } function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;} // If shift is held, this will move the selection anchor. Otherwise, // it'll set the whole selection. function extendSelection(doc, pos, other, bias) { if (doc.sel.shift || doc.sel.extend) { var anchor = doc.sel.anchor; if (other) { var posBefore = posLess(pos, anchor); if (posBefore != posLess(other, anchor)) { anchor = pos; pos = other; } else if (posBefore != posLess(pos, other)) { pos = other; } } setSelection(doc, anchor, pos, bias); } else { setSelection(doc, pos, other || pos, bias); } if (doc.cm) doc.cm.curOp.userSelChange = true; } function filterSelectionChange(doc, anchor, head) { var obj = {anchor: anchor, head: head}; signal(doc, "beforeSelectionChange", doc, obj); if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj); obj.anchor = clipPos(doc, obj.anchor); obj.head = clipPos(doc, obj.head); return obj; } // Update the selection. Last two args are only used by // updateDoc, since they have to be expressed in the line // numbers before the update. function setSelection(doc, anchor, head, bias, checkAtomic) { if (!checkAtomic && hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) { var filtered = filterSelectionChange(doc, anchor, head); head = filtered.head; anchor = filtered.anchor; } var sel = doc.sel; sel.goalColumn = null; // Skip over atomic spans. if (checkAtomic || !posEq(anchor, sel.anchor)) anchor = skipAtomic(doc, anchor, bias, checkAtomic != "push"); if (checkAtomic || !posEq(head, sel.head)) head = skipAtomic(doc, head, bias, checkAtomic != "push"); if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return; sel.anchor = anchor; sel.head = head; var inv = posLess(head, anchor); sel.from = inv ? head : anchor; sel.to = inv ? anchor : head; if (doc.cm) doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = doc.cm.curOp.cursorActivity = true; signalLater(doc, "cursorActivity", doc); } function reCheckSelection(cm) { setSelection(cm.doc, cm.doc.sel.from, cm.doc.sel.to, null, "push"); } function skipAtomic(doc, pos, bias, mayClear) { var flipped = false, curPos = pos; var dir = bias || 1; doc.cantEdit = false; search: for (;;) { var line = getLine(doc, curPos.line); if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) { var sp = line.markedSpans[i], m = sp.marker; if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) && (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) { if (mayClear) { signal(m, "beforeCursorEnter"); if (m.explicitlyCleared) { if (!line.markedSpans) break; else {--i; continue;} } } if (!m.atomic) continue; var newPos = m.find()[dir < 0 ? "from" : "to"]; if (posEq(newPos, curPos)) { newPos.ch += dir; if (newPos.ch < 0) { if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1)); else newPos = null; } else if (newPos.ch > line.text.length) { if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0); else newPos = null; } if (!newPos) { if (flipped) { // Driven in a corner -- no valid cursor position found at all // -- try again *with* clearing, if we didn't already if (!mayClear) return skipAtomic(doc, pos, bias, true); // Otherwise, turn off editing until further notice, and return the start of the doc doc.cantEdit = true; return Pos(doc.first, 0); } flipped = true; newPos = pos; dir = -dir; } } curPos = newPos; continue search; } } } return curPos; } } // SCROLLING function scrollCursorIntoView(cm) { var coords = scrollPosIntoView(cm, cm.doc.sel.head, cm.options.cursorScrollMargin); if (!cm.state.focused) return; var display = cm.display, box = getRect(display.sizer), doScroll = null; if (coords.top + box.top < 0) doScroll = true; else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false; if (doScroll != null && !phantom) { var hidden = display.cursor.style.display == "none"; if (hidden) { display.cursor.style.display = ""; display.cursor.style.left = coords.left + "px"; display.cursor.style.top = (coords.top - display.viewOffset) + "px"; } display.cursor.scrollIntoView(doScroll); if (hidden) display.cursor.style.display = "none"; } } function scrollPosIntoView(cm, pos, margin) { if (margin == null) margin = 0; for (;;) { var changed = false, coords = cursorCoords(cm, pos); var scrollPos = calculateScrollPos(cm, coords.left, coords.top - margin, coords.left, coords.bottom + margin); var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft; if (scrollPos.scrollTop != null) { setScrollTop(cm, scrollPos.scrollTop); if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true; } if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft); if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true; } if (!changed) return coords; } } function scrollIntoView(cm, x1, y1, x2, y2) { var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2); if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop); if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft); } function calculateScrollPos(cm, x1, y1, x2, y2) { var display = cm.display, snapMargin = textHeight(cm.display); if (y1 < 0) y1 = 0; var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {}; var docBottom = cm.doc.height + paddingVert(display); var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin; if (y1 < screentop) { result.scrollTop = atTop ? 0 : y1; } else if (y2 > screentop + screen) { var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen); if (newTop != screentop) result.scrollTop = newTop; } var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft; x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth; var gutterw = display.gutters.offsetWidth; var atLeft = x1 < gutterw + 10; if (x1 < screenleft + gutterw || atLeft) { if (atLeft) x1 = 0; result.scrollLeft = Math.max(0, x1 - 10 - gutterw); } else if (x2 > screenw + screenleft - 3) { result.scrollLeft = x2 + 10 - screenw; } return result; } function updateScrollPos(cm, left, top) { cm.curOp.updateScrollPos = {scrollLeft: left == null ? cm.doc.scrollLeft : left, scrollTop: top == null ? cm.doc.scrollTop : top}; } function addToScrollPos(cm, left, top) { var pos = cm.curOp.updateScrollPos || (cm.curOp.updateScrollPos = {scrollLeft: cm.doc.scrollLeft, scrollTop: cm.doc.scrollTop}); var scroll = cm.display.scroller; pos.scrollTop = Math.max(0, Math.min(scroll.scrollHeight - scroll.clientHeight, pos.scrollTop + top)); pos.scrollLeft = Math.max(0, Math.min(scroll.scrollWidth - scroll.clientWidth, pos.scrollLeft + left)); } // API UTILITIES function indentLine(cm, n, how, aggressive) { var doc = cm.doc; if (how == null) how = "add"; if (how == "smart") { if (!cm.doc.mode.indent) how = "prev"; else var state = getStateBefore(cm, n); } var tabSize = cm.options.tabSize; var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize); var curSpaceString = line.text.match(/^\s*/)[0], indentation; if (how == "smart") { indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text); if (indentation == Pass) { if (!aggressive) return; how = "prev"; } } if (how == "prev") { if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize); else indentation = 0; } else if (how == "add") { indentation = curSpace + cm.options.indentUnit; } else if (how == "subtract") { indentation = curSpace - cm.options.indentUnit; } else if (typeof how == "number") { indentation = curSpace + how; } indentation = Math.max(0, indentation); var indentString = "", pos = 0; if (cm.options.indentWithTabs) for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} if (pos < indentation) indentString += spaceStr(indentation - pos); if (indentString != curSpaceString) replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); line.stateAfter = null; } function changeLine(cm, handle, op) { var no = handle, line = handle, doc = cm.doc; if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle)); else no = lineNo(handle); if (no == null) return null; if (op(line, no)) regChange(cm, no, no + 1); else return null; return line; } function findPosH(doc, pos, dir, unit, visually) { var line = pos.line, ch = pos.ch, origDir = dir; var lineObj = getLine(doc, line); var possible = true; function findNextLine() { var l = line + dir; if (l < doc.first || l >= doc.first + doc.size) return (possible = false); line = l; return lineObj = getLine(doc, l); } function moveOnce(boundToLine) { var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true); if (next == null) { if (!boundToLine && findNextLine()) { if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj); else ch = dir < 0 ? lineObj.text.length : 0; } else return (possible = false); } else ch = next; return true; } if (unit == "char") moveOnce(); else if (unit == "column") moveOnce(true); else if (unit == "word" || unit == "group") { var sawType = null, group = unit == "group"; for (var first = true;; first = false) { if (dir < 0 && !moveOnce(!first)) break; var cur = lineObj.text.charAt(ch) || "\n"; var type = isWordChar(cur) ? "w" : !group ? null : /\s/.test(cur) ? null : "p"; if (sawType && sawType != type) { if (dir < 0) {dir = 1; moveOnce();} break; } if (type) sawType = type; if (dir > 0 && !moveOnce(!first)) break; } } var result = skipAtomic(doc, Pos(line, ch), origDir, true); if (!possible) result.hitSide = true; return result; } function findPosV(cm, pos, dir, unit) { var doc = cm.doc, x = pos.left, y; if (unit == "page") { var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display)); } else if (unit == "line") { y = dir > 0 ? pos.bottom + 3 : pos.top - 3; } for (;;) { var target = coordsChar(cm, x, y); if (!target.outside) break; if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; } y += dir * 5; } return target; } function findWordAt(line, pos) { var start = pos.ch, end = pos.ch; if (line) { if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end; var startChar = line.charAt(start); var check = isWordChar(startChar) ? isWordChar : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);}; while (start > 0 && check(line.charAt(start - 1))) --start; while (end < line.length && check(line.charAt(end))) ++end; } return {from: Pos(pos.line, start), to: Pos(pos.line, end)}; } function selectLine(cm, line) { extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0))); } // PROTOTYPE // The publicly visible API. Note that operation(null, f) means // 'wrap f in an operation, performed on its `this` parameter' CodeMirror.prototype = { constructor: CodeMirror, focus: function(){window.focus(); focusInput(this); onFocus(this); fastPoll(this);}, setOption: function(option, value) { var options = this.options, old = options[option]; if (options[option] == value && option != "mode") return; options[option] = value; if (optionHandlers.hasOwnProperty(option)) operation(this, optionHandlers[option])(this, value, old); }, getOption: function(option) {return this.options[option];}, getDoc: function() {return this.doc;}, addKeyMap: function(map, bottom) { this.state.keyMaps[bottom ? "push" : "unshift"](map); }, removeKeyMap: function(map) { var maps = this.state.keyMaps; for (var i = 0; i < maps.length; ++i) if (maps[i] == map || (typeof maps[i] != "string" && maps[i].name == map)) { maps.splice(i, 1); return true; } }, addOverlay: operation(null, function(spec, options) { var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec); if (mode.startState) throw new Error("Overlays may not be stateful."); this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque}); this.state.modeGen++; regChange(this); }), removeOverlay: operation(null, function(spec) { var overlays = this.state.overlays; for (var i = 0; i < overlays.length; ++i) { var cur = overlays[i].modeSpec; if (cur == spec || typeof spec == "string" && cur.name == spec) { overlays.splice(i, 1); this.state.modeGen++; regChange(this); return; } } }), indentLine: operation(null, function(n, dir, aggressive) { if (typeof dir != "string" && typeof dir != "number") { if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"; else dir = dir ? "add" : "subtract"; } if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive); }), indentSelection: operation(null, function(how) { var sel = this.doc.sel; if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how); var e = sel.to.line - (sel.to.ch ? 0 : 1); for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how); }), // Fetch the parser token for a given character. Useful for hacks // that want to inspect the mode state (say, for completion). getTokenAt: function(pos, precise) { var doc = this.doc; pos = clipPos(doc, pos); var state = getStateBefore(this, pos.line, precise), mode = this.doc.mode; var line = getLine(doc, pos.line); var stream = new StringStream(line.text, this.options.tabSize); while (stream.pos < pos.ch && !stream.eol()) { stream.start = stream.pos; var style = mode.token(stream, state); } return {start: stream.start, end: stream.pos, string: stream.current(), className: style || null, // Deprecated, use 'type' instead type: style || null, state: state}; }, getTokenTypeAt: function(pos) { pos = clipPos(this.doc, pos); var styles = getLineStyles(this, getLine(this.doc, pos.line)); var before = 0, after = (styles.length - 1) / 2, ch = pos.ch; if (ch == 0) return styles[2]; for (;;) { var mid = (before + after) >> 1; if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid; else if (styles[mid * 2 + 1] < ch) before = mid + 1; else return styles[mid * 2 + 2]; } }, getModeAt: function(pos) { var mode = this.doc.mode; if (!mode.innerMode) return mode; return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode; }, getHelper: function(pos, type) { if (!helpers.hasOwnProperty(type)) return; var help = helpers[type], mode = this.getModeAt(pos); return mode[type] && help[mode[type]] || mode.helperType && help[mode.helperType] || help[mode.name]; }, getStateAfter: function(line, precise) { var doc = this.doc; line = clipLine(doc, line == null ? doc.first + doc.size - 1: line); return getStateBefore(this, line + 1, precise); }, cursorCoords: function(start, mode) { var pos, sel = this.doc.sel; if (start == null) pos = sel.head; else if (typeof start == "object") pos = clipPos(this.doc, start); else pos = start ? sel.from : sel.to; return cursorCoords(this, pos, mode || "page"); }, charCoords: function(pos, mode) { return charCoords(this, clipPos(this.doc, pos), mode || "page"); }, coordsChar: function(coords, mode) { coords = fromCoordSystem(this, coords, mode || "page"); return coordsChar(this, coords.left, coords.top); }, lineAtHeight: function(height, mode) { height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top; return lineAtHeight(this.doc, height + this.display.viewOffset); }, heightAtLine: function(line, mode) { var end = false, last = this.doc.first + this.doc.size - 1; if (line < this.doc.first) line = this.doc.first; else if (line > last) { line = last; end = true; } var lineObj = getLine(this.doc, line); return intoCoordSystem(this, getLine(this.doc, line), {top: 0, left: 0}, mode || "page").top + (end ? lineObj.height : 0); }, defaultTextHeight: function() { return textHeight(this.display); }, defaultCharWidth: function() { return charWidth(this.display); }, setGutterMarker: operation(null, function(line, gutterID, value) { return changeLine(this, line, function(line) { var markers = line.gutterMarkers || (line.gutterMarkers = {}); markers[gutterID] = value; if (!value && isEmpty(markers)) line.gutterMarkers = null; return true; }); }), clearGutter: operation(null, function(gutterID) { var cm = this, doc = cm.doc, i = doc.first; doc.iter(function(line) { if (line.gutterMarkers && line.gutterMarkers[gutterID]) { line.gutterMarkers[gutterID] = null; regChange(cm, i, i + 1); if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null; } ++i; }); }), addLineClass: operation(null, function(handle, where, cls) { return changeLine(this, handle, function(line) { var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; if (!line[prop]) line[prop] = cls; else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").test(line[prop])) return false; else line[prop] += " " + cls; return true; }); }), removeLineClass: operation(null, function(handle, where, cls) { return changeLine(this, handle, function(line) { var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; var cur = line[prop]; if (!cur) return false; else if (cls == null) line[prop] = null; else { var found = cur.match(new RegExp("(?:^|\\s+)" + cls + "(?:$|\\s+)")); if (!found) return false; var end = found.index + found[0].length; line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null; } return true; }); }), addLineWidget: operation(null, function(handle, node, options) { return addLineWidget(this, handle, node, options); }), removeLineWidget: function(widget) { widget.clear(); }, lineInfo: function(line) { if (typeof line == "number") { if (!isLine(this.doc, line)) return null; var n = line; line = getLine(this.doc, line); if (!line) return null; } else { var n = lineNo(line); if (n == null) return null; } return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, widgets: line.widgets}; }, getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};}, addWidget: function(pos, node, scroll, vert, horiz) { var display = this.display; pos = cursorCoords(this, clipPos(this.doc, pos)); var top = pos.bottom, left = pos.left; node.style.position = "absolute"; display.sizer.appendChild(node); if (vert == "over") { top = pos.top; } else if (vert == "above" || vert == "near") { var vspace = Math.max(display.wrapper.clientHeight, this.doc.height), hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth); // Default to positioning above (if specified and possible); otherwise default to positioning below if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) top = pos.top - node.offsetHeight; else if (pos.bottom + node.offsetHeight <= vspace) top = pos.bottom; if (left + node.offsetWidth > hspace) left = hspace - node.offsetWidth; } node.style.top = top + "px"; node.style.left = node.style.right = ""; if (horiz == "right") { left = display.sizer.clientWidth - node.offsetWidth; node.style.right = "0px"; } else { if (horiz == "left") left = 0; else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2; node.style.left = left + "px"; } if (scroll) scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight); }, triggerOnKeyDown: operation(null, onKeyDown), execCommand: function(cmd) {return commands[cmd](this);}, findPosH: function(from, amount, unit, visually) { var dir = 1; if (amount < 0) { dir = -1; amount = -amount; } for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { cur = findPosH(this.doc, cur, dir, unit, visually); if (cur.hitSide) break; } return cur; }, moveH: operation(null, function(dir, unit) { var sel = this.doc.sel, pos; if (sel.shift || sel.extend || posEq(sel.from, sel.to)) pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually); else pos = dir < 0 ? sel.from : sel.to; extendSelection(this.doc, pos, pos, dir); }), deleteH: operation(null, function(dir, unit) { var sel = this.doc.sel; if (!posEq(sel.from, sel.to)) replaceRange(this.doc, "", sel.from, sel.to, "+delete"); else replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete"); this.curOp.userSelChange = true; }), findPosV: function(from, amount, unit, goalColumn) { var dir = 1, x = goalColumn; if (amount < 0) { dir = -1; amount = -amount; } for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { var coords = cursorCoords(this, cur, "div"); if (x == null) x = coords.left; else coords.left = x; cur = findPosV(this, coords, dir, unit); if (cur.hitSide) break; } return cur; }, moveV: operation(null, function(dir, unit) { var sel = this.doc.sel; var pos = cursorCoords(this, sel.head, "div"); if (sel.goalColumn != null) pos.left = sel.goalColumn; var target = findPosV(this, pos, dir, unit); if (unit == "page") addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top); extendSelection(this.doc, target, target, dir); sel.goalColumn = pos.left; }), toggleOverwrite: function(value) { if (value != null && value == this.state.overwrite) return; if (this.state.overwrite = !this.state.overwrite) this.display.cursor.className += " CodeMirror-overwrite"; else this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", ""); }, hasFocus: function() { return this.state.focused; }, scrollTo: operation(null, function(x, y) { updateScrollPos(this, x, y); }), getScrollInfo: function() { var scroller = this.display.scroller, co = scrollerCutOff; return {left: scroller.scrollLeft, top: scroller.scrollTop, height: scroller.scrollHeight - co, width: scroller.scrollWidth - co, clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co}; }, scrollIntoView: operation(null, function(pos, margin) { if (typeof pos == "number") pos = Pos(pos, 0); if (!margin) margin = 0; var coords = pos; if (!pos || pos.line != null) { this.curOp.scrollToPos = pos ? clipPos(this.doc, pos) : this.doc.sel.head; this.curOp.scrollToPosMargin = margin; coords = cursorCoords(this, this.curOp.scrollToPos); } var sPos = calculateScrollPos(this, coords.left, coords.top - margin, coords.right, coords.bottom + margin); updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop); }), setSize: operation(null, function(width, height) { function interpret(val) { return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; } if (width != null) this.display.wrapper.style.width = interpret(width); if (height != null) this.display.wrapper.style.height = interpret(height); if (this.options.lineWrapping) this.display.measureLineCache.length = this.display.measureLineCachePos = 0; this.curOp.forceUpdate = true; }), operation: function(f){return runInOp(this, f);}, refresh: operation(null, function() { clearCaches(this); updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop); regChange(this); }), swapDoc: operation(null, function(doc) { var old = this.doc; old.cm = null; attachDoc(this, doc); clearCaches(this); resetInput(this, true); updateScrollPos(this, doc.scrollLeft, doc.scrollTop); return old; }), getInputField: function(){return this.display.input;}, getWrapperElement: function(){return this.display.wrapper;}, getScrollerElement: function(){return this.display.scroller;}, getGutterElement: function(){return this.display.gutters;} }; eventMixin(CodeMirror); // OPTION DEFAULTS var optionHandlers = CodeMirror.optionHandlers = {}; // The default configuration options. var defaults = CodeMirror.defaults = {}; function option(name, deflt, handle, notOnInit) { CodeMirror.defaults[name] = deflt; if (handle) optionHandlers[name] = notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle; } var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}}; // These two are, on init, called from the constructor because they // have to be initialized before the editor can start at all. option("value", "", function(cm, val) { cm.setValue(val); }, true); option("mode", null, function(cm, val) { cm.doc.modeOption = val; loadMode(cm); }, true); option("indentUnit", 2, loadMode, true); option("indentWithTabs", false); option("smartIndent", true); option("tabSize", 4, function(cm) { loadMode(cm); clearCaches(cm); regChange(cm); }, true); option("electricChars", true); option("rtlMoveVisually", !windows); option("theme", "default", function(cm) { themeChanged(cm); guttersChanged(cm); }, true); option("keyMap", "default", keyMapChanged); option("extraKeys", null); option("onKeyEvent", null); option("onDragEvent", null); option("lineWrapping", false, wrappingChanged, true); option("gutters", [], function(cm) { setGuttersForLineNumbers(cm.options); guttersChanged(cm); }, true); option("fixedGutter", true, function(cm, val) { cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"; cm.refresh(); }, true); option("coverGutterNextToScrollbar", false, updateScrollbars, true); option("lineNumbers", false, function(cm) { setGuttersForLineNumbers(cm.options); guttersChanged(cm); }, true); option("firstLineNumber", 1, guttersChanged, true); option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true); option("showCursorWhenSelecting", false, updateSelection, true); option("readOnly", false, function(cm, val) { if (val == "nocursor") {onBlur(cm); cm.display.input.blur();} else if (!val) resetInput(cm, true); }); option("dragDrop", true); option("cursorBlinkRate", 530); option("cursorScrollMargin", 0); option("cursorHeight", 1); option("workTime", 100); option("workDelay", 100); option("flattenSpans", true); option("pollInterval", 100); option("undoDepth", 40, function(cm, val){cm.doc.history.undoDepth = val;}); option("historyEventDelay", 500); option("viewportMargin", 10, function(cm){cm.refresh();}, true); option("maxHighlightLength", 10000, function(cm){loadMode(cm); cm.refresh();}, true); option("moveInputWithCursor", true, function(cm, val) { if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0; }); option("tabindex", null, function(cm, val) { cm.display.input.tabIndex = val || ""; }); option("autofocus", null); // MODE DEFINITION AND QUERYING // Known modes, by name and by MIME var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; CodeMirror.defineMode = function(name, mode) { if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; if (arguments.length > 2) { mode.dependencies = []; for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]); } modes[name] = mode; }; CodeMirror.defineMIME = function(mime, spec) { mimeModes[mime] = spec; }; CodeMirror.resolveMode = function(spec) { if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { spec = mimeModes[spec]; } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { var found = mimeModes[spec.name]; spec = createObj(found, spec); spec.name = found.name; } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { return CodeMirror.resolveMode("application/xml"); } if (typeof spec == "string") return {name: spec}; else return spec || {name: "null"}; }; CodeMirror.getMode = function(options, spec) { var spec = CodeMirror.resolveMode(spec); var mfactory = modes[spec.name]; if (!mfactory) return CodeMirror.getMode(options, "text/plain"); var modeObj = mfactory(options, spec); if (modeExtensions.hasOwnProperty(spec.name)) { var exts = modeExtensions[spec.name]; for (var prop in exts) { if (!exts.hasOwnProperty(prop)) continue; if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop]; modeObj[prop] = exts[prop]; } } modeObj.name = spec.name; return modeObj; }; CodeMirror.defineMode("null", function() { return {token: function(stream) {stream.skipToEnd();}}; }); CodeMirror.defineMIME("text/plain", "null"); var modeExtensions = CodeMirror.modeExtensions = {}; CodeMirror.extendMode = function(mode, properties) { var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); copyObj(properties, exts); }; // EXTENSIONS CodeMirror.defineExtension = function(name, func) { CodeMirror.prototype[name] = func; }; CodeMirror.defineDocExtension = function(name, func) { Doc.prototype[name] = func; }; CodeMirror.defineOption = option; var initHooks = []; CodeMirror.defineInitHook = function(f) {initHooks.push(f);}; var helpers = CodeMirror.helpers = {}; CodeMirror.registerHelper = function(type, name, value) { if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {}; helpers[type][name] = value; }; // UTILITIES CodeMirror.isWordChar = isWordChar; // MODE STATE HANDLING // Utility functions for working with state. Exported because modes // sometimes need to do this. function copyState(mode, state) { if (state === true) return state; if (mode.copyState) return mode.copyState(state); var nstate = {}; for (var n in state) { var val = state[n]; if (val instanceof Array) val = val.concat([]); nstate[n] = val; } return nstate; } CodeMirror.copyState = copyState; function startState(mode, a1, a2) { return mode.startState ? mode.startState(a1, a2) : true; } CodeMirror.startState = startState; CodeMirror.innerMode = function(mode, state) { while (mode.innerMode) { var info = mode.innerMode(state); if (!info || info.mode == mode) break; state = info.state; mode = info.mode; } return info || {mode: mode, state: state}; }; // STANDARD COMMANDS var commands = CodeMirror.commands = { selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()));}, killLine: function(cm) { var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to); if (!sel && cm.getLine(from.line).length == from.ch) cm.replaceRange("", from, Pos(from.line + 1, 0), "+delete"); else cm.replaceRange("", from, sel ? to : Pos(from.line), "+delete"); }, deleteLine: function(cm) { var l = cm.getCursor().line; cm.replaceRange("", Pos(l, 0), Pos(l), "+delete"); }, delLineLeft: function(cm) { var cur = cm.getCursor(); cm.replaceRange("", Pos(cur.line, 0), cur, "+delete"); }, undo: function(cm) {cm.undo();}, redo: function(cm) {cm.redo();}, goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));}, goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));}, goLineStart: function(cm) { cm.extendSelection(lineStart(cm, cm.getCursor().line)); }, goLineStartSmart: function(cm) { var cur = cm.getCursor(), start = lineStart(cm, cur.line); var line = cm.getLineHandle(start.line); var order = getOrder(line); if (!order || order[0].level == 0) { var firstNonWS = Math.max(0, line.text.search(/\S/)); var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch; cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS)); } else cm.extendSelection(start); }, goLineEnd: function(cm) { cm.extendSelection(lineEnd(cm, cm.getCursor().line)); }, goLineRight: function(cm) { var top = cm.charCoords(cm.getCursor(), "div").top + 5; cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")); }, goLineLeft: function(cm) { var top = cm.charCoords(cm.getCursor(), "div").top + 5; cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div")); }, goLineUp: function(cm) {cm.moveV(-1, "line");}, goLineDown: function(cm) {cm.moveV(1, "line");}, goPageUp: function(cm) {cm.moveV(-1, "page");}, goPageDown: function(cm) {cm.moveV(1, "page");}, goCharLeft: function(cm) {cm.moveH(-1, "char");}, goCharRight: function(cm) {cm.moveH(1, "char");}, goColumnLeft: function(cm) {cm.moveH(-1, "column");}, goColumnRight: function(cm) {cm.moveH(1, "column");}, goWordLeft: function(cm) {cm.moveH(-1, "word");}, goGroupRight: function(cm) {cm.moveH(1, "group");}, goGroupLeft: function(cm) {cm.moveH(-1, "group");}, goWordRight: function(cm) {cm.moveH(1, "word");}, delCharBefore: function(cm) {cm.deleteH(-1, "char");}, delCharAfter: function(cm) {cm.deleteH(1, "char");}, delWordBefore: function(cm) {cm.deleteH(-1, "word");}, delWordAfter: function(cm) {cm.deleteH(1, "word");}, delGroupBefore: function(cm) {cm.deleteH(-1, "group");}, delGroupAfter: function(cm) {cm.deleteH(1, "group");}, indentAuto: function(cm) {cm.indentSelection("smart");}, indentMore: function(cm) {cm.indentSelection("add");}, indentLess: function(cm) {cm.indentSelection("subtract");}, insertTab: function(cm) {cm.replaceSelection("\t", "end", "+input");}, defaultTab: function(cm) { if (cm.somethingSelected()) cm.indentSelection("add"); else cm.replaceSelection("\t", "end", "+input"); }, transposeChars: function(cm) { var cur = cm.getCursor(), line = cm.getLine(cur.line); if (cur.ch > 0 && cur.ch < line.length - 1) cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1), Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1)); }, newlineAndIndent: function(cm) { operation(cm, function() { cm.replaceSelection("\n", "end", "+input"); cm.indentLine(cm.getCursor().line, null, true); })(); }, toggleOverwrite: function(cm) {cm.toggleOverwrite();} }; // STANDARD KEYMAPS var keyMap = CodeMirror.keyMap = {}; keyMap.basic = { "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", "Delete": "delCharAfter", "Backspace": "delCharBefore", "Tab": "defaultTab", "Shift-Tab": "indentAuto", "Enter": "newlineAndIndent", "Insert": "toggleOverwrite" }; // Note that the save and find-related commands aren't defined by // default. Unknown commands are simply ignored. keyMap.pcDefault = { "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", "Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd", "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", fallthrough: "basic" }; keyMap.macDefault = { "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", "Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delGroupBefore", "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft", fallthrough: ["basic", "emacsy"] }; keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; keyMap.emacsy = { "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars" }; // KEYMAP DISPATCH function getKeyMap(val) { if (typeof val == "string") return keyMap[val]; else return val; } function lookupKey(name, maps, handle) { function lookup(map) { map = getKeyMap(map); var found = map[name]; if (found === false) return "stop"; if (found != null && handle(found)) return true; if (map.nofallthrough) return "stop"; var fallthrough = map.fallthrough; if (fallthrough == null) return false; if (Object.prototype.toString.call(fallthrough) != "[object Array]") return lookup(fallthrough); for (var i = 0, e = fallthrough.length; i < e; ++i) { var done = lookup(fallthrough[i]); if (done) return done; } return false; } for (var i = 0; i < maps.length; ++i) { var done = lookup(maps[i]); if (done) return done != "stop"; } } function isModifierKey(event) { var name = keyNames[event.keyCode]; return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; } function keyName(event, noShift) { if (opera && event.keyCode == 34 && event["char"]) return false; var name = keyNames[event.keyCode]; if (name == null || event.altGraphKey) return false; if (event.altKey) name = "Alt-" + name; if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name; if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name; if (!noShift && event.shiftKey) name = "Shift-" + name; return name; } CodeMirror.lookupKey = lookupKey; CodeMirror.isModifierKey = isModifierKey; CodeMirror.keyName = keyName; // FROMTEXTAREA CodeMirror.fromTextArea = function(textarea, options) { if (!options) options = {}; options.value = textarea.value; if (!options.tabindex && textarea.tabindex) options.tabindex = textarea.tabindex; if (!options.placeholder && textarea.placeholder) options.placeholder = textarea.placeholder; // Set autofocus to true if this textarea is focused, or if it has // autofocus and no other element is focused. if (options.autofocus == null) { var hasFocus = document.body; // doc.activeElement occasionally throws on IE try { hasFocus = document.activeElement; } catch(e) {} options.autofocus = hasFocus == textarea || textarea.getAttribute("autofocus") != null && hasFocus == document.body; } function save() {textarea.value = cm.getValue();} if (textarea.form) { on(textarea.form, "submit", save); // Deplorable hack to make the submit method do the right thing. if (!options.leaveSubmitMethodAlone) { var form = textarea.form, realSubmit = form.submit; try { var wrappedSubmit = form.submit = function() { save(); form.submit = realSubmit; form.submit(); form.submit = wrappedSubmit; }; } catch(e) {} } } textarea.style.display = "none"; var cm = CodeMirror(function(node) { textarea.parentNode.insertBefore(node, textarea.nextSibling); }, options); cm.save = save; cm.getTextArea = function() { return textarea; }; cm.toTextArea = function() { save(); textarea.parentNode.removeChild(cm.getWrapperElement()); textarea.style.display = ""; if (textarea.form) { off(textarea.form, "submit", save); if (typeof textarea.form.submit == "function") textarea.form.submit = realSubmit; } }; return cm; }; // STRING STREAM // Fed to the mode parsers, provides helper functions to make // parsers more succinct. // The character stream used by a mode's parser. function StringStream(string, tabSize) { this.pos = this.start = 0; this.string = string; this.tabSize = tabSize || 8; this.lastColumnPos = this.lastColumnValue = 0; } StringStream.prototype = { eol: function() {return this.pos >= this.string.length;}, sol: function() {return this.pos == 0;}, peek: function() {return this.string.charAt(this.pos) || undefined;}, next: function() { if (this.pos < this.string.length) return this.string.charAt(this.pos++); }, eat: function(match) { var ch = this.string.charAt(this.pos); if (typeof match == "string") var ok = ch == match; else var ok = ch && (match.test ? match.test(ch) : match(ch)); if (ok) {++this.pos; return ch;} }, eatWhile: function(match) { var start = this.pos; while (this.eat(match)){} return this.pos > start; }, eatSpace: function() { var start = this.pos; while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; return this.pos > start; }, skipToEnd: function() {this.pos = this.string.length;}, skipTo: function(ch) { var found = this.string.indexOf(ch, this.pos); if (found > -1) {this.pos = found; return true;} }, backUp: function(n) {this.pos -= n;}, column: function() { if (this.lastColumnPos < this.start) { this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue); this.lastColumnPos = this.start; } return this.lastColumnValue; }, indentation: function() {return countColumn(this.string, null, this.tabSize);}, match: function(pattern, consume, caseInsensitive) { if (typeof pattern == "string") { var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;}; var substr = this.string.substr(this.pos, pattern.length); if (cased(substr) == cased(pattern)) { if (consume !== false) this.pos += pattern.length; return true; } } else { var match = this.string.slice(this.pos).match(pattern); if (match && match.index > 0) return null; if (match && consume !== false) this.pos += match[0].length; return match; } }, current: function(){return this.string.slice(this.start, this.pos);} }; CodeMirror.StringStream = StringStream; // TEXTMARKERS function TextMarker(doc, type) { this.lines = []; this.type = type; this.doc = doc; } CodeMirror.TextMarker = TextMarker; eventMixin(TextMarker); TextMarker.prototype.clear = function() { if (this.explicitlyCleared) return; var cm = this.doc.cm, withOp = cm && !cm.curOp; if (withOp) startOperation(cm); if (hasHandler(this, "clear")) { var found = this.find(); if (found) signalLater(this, "clear", found.from, found.to); } var min = null, max = null; for (var i = 0; i < this.lines.length; ++i) { var line = this.lines[i]; var span = getMarkedSpanFor(line.markedSpans, this); if (span.to != null) max = lineNo(line); line.markedSpans = removeMarkedSpan(line.markedSpans, span); if (span.from != null) min = lineNo(line); else if (this.collapsed && !lineIsHidden(this.doc, line) && cm) updateLineHeight(line, textHeight(cm.display)); } if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) { var visual = visualLine(cm.doc, this.lines[i]), len = lineLength(cm.doc, visual); if (len > cm.display.maxLineLength) { cm.display.maxLine = visual; cm.display.maxLineLength = len; cm.display.maxLineChanged = true; } } if (min != null && cm) regChange(cm, min, max + 1); this.lines.length = 0; this.explicitlyCleared = true; if (this.atomic && this.doc.cantEdit) { this.doc.cantEdit = false; if (cm) reCheckSelection(cm); } if (withOp) endOperation(cm); }; TextMarker.prototype.find = function() { var from, to; for (var i = 0; i < this.lines.length; ++i) { var line = this.lines[i]; var span = getMarkedSpanFor(line.markedSpans, this); if (span.from != null || span.to != null) { var found = lineNo(line); if (span.from != null) from = Pos(found, span.from); if (span.to != null) to = Pos(found, span.to); } } if (this.type == "bookmark") return from; return from && {from: from, to: to}; }; TextMarker.prototype.changed = function() { var pos = this.find(), cm = this.doc.cm; if (!pos || !cm) return; var line = getLine(this.doc, pos.from.line); clearCachedMeasurement(cm, line); if (pos.from.line >= cm.display.showingFrom && pos.from.line < cm.display.showingTo) { for (var node = cm.display.lineDiv.firstChild; node; node = node.nextSibling) if (node.lineObj == line) { if (node.offsetHeight != line.height) updateLineHeight(line, node.offsetHeight); break; } runInOp(cm, function() { cm.curOp.selectionChanged = cm.curOp.forceUpdate = cm.curOp.updateMaxLine = true; }); } }; TextMarker.prototype.attachLine = function(line) { if (!this.lines.length && this.doc.cm) { var op = this.doc.cm.curOp; if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); } this.lines.push(line); }; TextMarker.prototype.detachLine = function(line) { this.lines.splice(indexOf(this.lines, line), 1); if (!this.lines.length && this.doc.cm) { var op = this.doc.cm.curOp; (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this); } }; function markText(doc, from, to, options, type) { if (options && options.shared) return markTextShared(doc, from, to, options, type); if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type); var marker = new TextMarker(doc, type); if (type == "range" && !posLess(from, to)) return marker; if (options) copyObj(options, marker); if (marker.replacedWith) { marker.collapsed = true; marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget"); if (!options.handleMouseEvents) marker.replacedWith.ignoreEvents = true; } if (marker.collapsed) sawCollapsedSpans = true; if (marker.addToHistory) addToHistory(doc, {from: from, to: to, origin: "markText"}, {head: doc.sel.head, anchor: doc.sel.anchor}, NaN); var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd, cm = doc.cm, updateMaxLine; doc.iter(curLine, to.line + 1, function(line) { if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(doc, line) == cm.display.maxLine) updateMaxLine = true; var span = {from: null, to: null, marker: marker}; size += line.text.length; if (curLine == from.line) {span.from = from.ch; size -= from.ch;} if (curLine == to.line) {span.to = to.ch; size -= line.text.length - to.ch;} if (marker.collapsed) { if (curLine == to.line) collapsedAtEnd = collapsedSpanAt(line, to.ch); if (curLine == from.line) collapsedAtStart = collapsedSpanAt(line, from.ch); else updateLineHeight(line, 0); } addMarkedSpan(line, span); ++curLine; }); if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) { if (lineIsHidden(doc, line)) updateLineHeight(line, 0); }); if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); }); if (marker.readOnly) { sawReadOnlySpans = true; if (doc.history.done.length || doc.history.undone.length) doc.clearHistory(); } if (marker.collapsed) { if (collapsedAtStart != collapsedAtEnd) throw new Error("Inserting collapsed marker overlapping an existing one"); marker.size = size; marker.atomic = true; } if (cm) { if (updateMaxLine) cm.curOp.updateMaxLine = true; if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.collapsed) regChange(cm, from.line, to.line + 1); if (marker.atomic) reCheckSelection(cm); } return marker; } // SHARED TEXTMARKERS function SharedTextMarker(markers, primary) { this.markers = markers; this.primary = primary; for (var i = 0, me = this; i < markers.length; ++i) { markers[i].parent = this; on(markers[i], "clear", function(){me.clear();}); } } CodeMirror.SharedTextMarker = SharedTextMarker; eventMixin(SharedTextMarker); SharedTextMarker.prototype.clear = function() { if (this.explicitlyCleared) return; this.explicitlyCleared = true; for (var i = 0; i < this.markers.length; ++i) this.markers[i].clear(); signalLater(this, "clear"); }; SharedTextMarker.prototype.find = function() { return this.primary.find(); }; function markTextShared(doc, from, to, options, type) { options = copyObj(options); options.shared = false; var markers = [markText(doc, from, to, options, type)], primary = markers[0]; var widget = options.replacedWith; linkedDocs(doc, function(doc) { if (widget) options.replacedWith = widget.cloneNode(true); markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)); for (var i = 0; i < doc.linked.length; ++i) if (doc.linked[i].isParent) return; primary = lst(markers); }); return new SharedTextMarker(markers, primary); } // TEXTMARKER SPANS function getMarkedSpanFor(spans, marker) { if (spans) for (var i = 0; i < spans.length; ++i) { var span = spans[i]; if (span.marker == marker) return span; } } function removeMarkedSpan(spans, span) { for (var r, i = 0; i < spans.length; ++i) if (spans[i] != span) (r || (r = [])).push(spans[i]); return r; } function addMarkedSpan(line, span) { line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; span.marker.attachLine(line); } function markedSpansBefore(old, startCh, isInsert) { if (old) for (var i = 0, nw; i < old.length; ++i) { var span = old[i], marker = span.marker; var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); if (startsBefore || marker.type == "bookmark" && span.from == startCh && (!isInsert || !span.marker.insertLeft)) { var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh); (nw || (nw = [])).push({from: span.from, to: endsAfter ? null : span.to, marker: marker}); } } return nw; } function markedSpansAfter(old, endCh, isInsert) { if (old) for (var i = 0, nw; i < old.length; ++i) { var span = old[i], marker = span.marker; var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh); if (endsAfter || marker.type == "bookmark" && span.from == endCh && (!isInsert || span.marker.insertLeft)) { var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh); (nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh, to: span.to == null ? null : span.to - endCh, marker: marker}); } } return nw; } function stretchSpansOverChange(doc, change) { var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans; var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans; if (!oldFirst && !oldLast) return null; var startCh = change.from.ch, endCh = change.to.ch, isInsert = posEq(change.from, change.to); // Get the spans that 'stick out' on both sides var first = markedSpansBefore(oldFirst, startCh, isInsert); var last = markedSpansAfter(oldLast, endCh, isInsert); // Next, merge those two ends var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0); if (first) { // Fix up .to properties of first for (var i = 0; i < first.length; ++i) { var span = first[i]; if (span.to == null) { var found = getMarkedSpanFor(last, span.marker); if (!found) span.to = startCh; else if (sameLine) span.to = found.to == null ? null : found.to + offset; } } } if (last) { // Fix up .from in last (or move them into first in case of sameLine) for (var i = 0; i < last.length; ++i) { var span = last[i]; if (span.to != null) span.to += offset; if (span.from == null) { var found = getMarkedSpanFor(first, span.marker); if (!found) { span.from = offset; if (sameLine) (first || (first = [])).push(span); } } else { span.from += offset; if (sameLine) (first || (first = [])).push(span); } } } if (sameLine && first) { // Make sure we didn't create any zero-length spans for (var i = 0; i < first.length; ++i) if (first[i].from != null && first[i].from == first[i].to && first[i].marker.type != "bookmark") first.splice(i--, 1); if (!first.length) first = null; } var newMarkers = [first]; if (!sameLine) { // Fill gap with whole-line-spans var gap = change.text.length - 2, gapMarkers; if (gap > 0 && first) for (var i = 0; i < first.length; ++i) if (first[i].to == null) (gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker}); for (var i = 0; i < gap; ++i) newMarkers.push(gapMarkers); newMarkers.push(last); } return newMarkers; } function mergeOldSpans(doc, change) { var old = getOldSpans(doc, change); var stretched = stretchSpansOverChange(doc, change); if (!old) return stretched; if (!stretched) return old; for (var i = 0; i < old.length; ++i) { var oldCur = old[i], stretchCur = stretched[i]; if (oldCur && stretchCur) { spans: for (var j = 0; j < stretchCur.length; ++j) { var span = stretchCur[j]; for (var k = 0; k < oldCur.length; ++k) if (oldCur[k].marker == span.marker) continue spans; oldCur.push(span); } } else if (stretchCur) { old[i] = stretchCur; } } return old; } function removeReadOnlyRanges(doc, from, to) { var markers = null; doc.iter(from.line, to.line + 1, function(line) { if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) { var mark = line.markedSpans[i].marker; if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) (markers || (markers = [])).push(mark); } }); if (!markers) return null; var parts = [{from: from, to: to}]; for (var i = 0; i < markers.length; ++i) { var mk = markers[i], m = mk.find(); for (var j = 0; j < parts.length; ++j) { var p = parts[j]; if (posLess(p.to, m.from) || posLess(m.to, p.from)) continue; var newParts = [j, 1]; if (posLess(p.from, m.from) || !mk.inclusiveLeft && posEq(p.from, m.from)) newParts.push({from: p.from, to: m.from}); if (posLess(m.to, p.to) || !mk.inclusiveRight && posEq(p.to, m.to)) newParts.push({from: m.to, to: p.to}); parts.splice.apply(parts, newParts); j += newParts.length - 1; } } return parts; } function collapsedSpanAt(line, ch) { var sps = sawCollapsedSpans && line.markedSpans, found; if (sps) for (var sp, i = 0; i < sps.length; ++i) { sp = sps[i]; if (!sp.marker.collapsed) continue; if ((sp.from == null || sp.from < ch) && (sp.to == null || sp.to > ch) && (!found || found.width < sp.marker.width)) found = sp.marker; } return found; } function collapsedSpanAtStart(line) { return collapsedSpanAt(line, -1); } function collapsedSpanAtEnd(line) { return collapsedSpanAt(line, line.text.length + 1); } function visualLine(doc, line) { var merged; while (merged = collapsedSpanAtStart(line)) line = getLine(doc, merged.find().from.line); return line; } function lineIsHidden(doc, line) { var sps = sawCollapsedSpans && line.markedSpans; if (sps) for (var sp, i = 0; i < sps.length; ++i) { sp = sps[i]; if (!sp.marker.collapsed) continue; if (sp.from == null) return true; if (sp.marker.replacedWith) continue; if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) return true; } } function lineIsHiddenInner(doc, line, span) { if (span.to == null) { var end = span.marker.find().to, endLine = getLine(doc, end.line); return lineIsHiddenInner(doc, endLine, getMarkedSpanFor(endLine.markedSpans, span.marker)); } if (span.marker.inclusiveRight && span.to == line.text.length) return true; for (var sp, i = 0; i < line.markedSpans.length; ++i) { sp = line.markedSpans[i]; if (sp.marker.collapsed && !sp.marker.replacedWith && sp.from == span.to && (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && lineIsHiddenInner(doc, line, sp)) return true; } } function detachMarkedSpans(line) { var spans = line.markedSpans; if (!spans) return; for (var i = 0; i < spans.length; ++i) spans[i].marker.detachLine(line); line.markedSpans = null; } function attachMarkedSpans(line, spans) { if (!spans) return; for (var i = 0; i < spans.length; ++i) spans[i].marker.attachLine(line); line.markedSpans = spans; } // LINE WIDGETS var LineWidget = CodeMirror.LineWidget = function(cm, node, options) { if (options) for (var opt in options) if (options.hasOwnProperty(opt)) this[opt] = options[opt]; this.cm = cm; this.node = node; }; eventMixin(LineWidget); function widgetOperation(f) { return function() { var withOp = !this.cm.curOp; if (withOp) startOperation(this.cm); try {var result = f.apply(this, arguments);} finally {if (withOp) endOperation(this.cm);} return result; }; } LineWidget.prototype.clear = widgetOperation(function() { var ws = this.line.widgets, no = lineNo(this.line); if (no == null || !ws) return; for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1); if (!ws.length) this.line.widgets = null; var aboveVisible = heightAtLine(this.cm, this.line) < this.cm.doc.scrollTop; updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this))); if (aboveVisible) addToScrollPos(this.cm, 0, -this.height); regChange(this.cm, no, no + 1); }); LineWidget.prototype.changed = widgetOperation(function() { var oldH = this.height; this.height = null; var diff = widgetHeight(this) - oldH; if (!diff) return; updateLineHeight(this.line, this.line.height + diff); var no = lineNo(this.line); regChange(this.cm, no, no + 1); }); function widgetHeight(widget) { if (widget.height != null) return widget.height; if (!widget.node.parentNode || widget.node.parentNode.nodeType != 1) removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative")); return widget.height = widget.node.offsetHeight; } function addLineWidget(cm, handle, node, options) { var widget = new LineWidget(cm, node, options); if (widget.noHScroll) cm.display.alignWidgets = true; changeLine(cm, handle, function(line) { var widgets = line.widgets || (line.widgets = []); if (widget.insertAt == null) widgets.push(widget); else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget); widget.line = line; if (!lineIsHidden(cm.doc, line) || widget.showIfHidden) { var aboveVisible = heightAtLine(cm, line) < cm.doc.scrollTop; updateLineHeight(line, line.height + widgetHeight(widget)); if (aboveVisible) addToScrollPos(cm, 0, widget.height); } return true; }); return widget; } // LINE DATA STRUCTURE // Line objects. These hold state related to a line, including // highlighting info (the styles array). var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) { this.text = text; attachMarkedSpans(this, markedSpans); this.height = estimateHeight ? estimateHeight(this) : 1; }; eventMixin(Line); function updateLine(line, text, markedSpans, estimateHeight) { line.text = text; if (line.stateAfter) line.stateAfter = null; if (line.styles) line.styles = null; if (line.order != null) line.order = null; detachMarkedSpans(line); attachMarkedSpans(line, markedSpans); var estHeight = estimateHeight ? estimateHeight(line) : 1; if (estHeight != line.height) updateLineHeight(line, estHeight); } function cleanUpLine(line) { line.parent = null; detachMarkedSpans(line); } // Run the given mode's parser over a line, update the styles // array, which contains alternating fragments of text and CSS // classes. function runMode(cm, text, mode, state, f) { var flattenSpans = mode.flattenSpans; if (flattenSpans == null) flattenSpans = cm.options.flattenSpans; var curStart = 0, curStyle = null; var stream = new StringStream(text, cm.options.tabSize), style; if (text == "" && mode.blankLine) mode.blankLine(state); while (!stream.eol()) { if (stream.pos > cm.options.maxHighlightLength) { flattenSpans = false; // Webkit seems to refuse to render text nodes longer than 57444 characters stream.pos = Math.min(text.length, stream.start + 50000); style = null; } else { style = mode.token(stream, state); } if (!flattenSpans || curStyle != style) { if (curStart < stream.start) f(stream.start, curStyle); curStart = stream.start; curStyle = style; } stream.start = stream.pos; } if (curStart < stream.pos) f(stream.pos, curStyle); } function highlightLine(cm, line, state) { // A styles array always starts with a number identifying the // mode/overlays that it is based on (for easy invalidation). var st = [cm.state.modeGen]; // Compute the base array of styles runMode(cm, line.text, cm.doc.mode, state, function(end, style) {st.push(end, style);}); // Run overlays, adjust style array. for (var o = 0; o < cm.state.overlays.length; ++o) { var overlay = cm.state.overlays[o], i = 1, at = 0; runMode(cm, line.text, overlay.mode, true, function(end, style) { var start = i; // Ensure there's a token end at the current position, and that i points at it while (at < end) { var i_end = st[i]; if (i_end > end) st.splice(i, 1, end, st[i+1], i_end); i += 2; at = Math.min(end, i_end); } if (!style) return; if (overlay.opaque) { st.splice(start, i - start, end, style); i = start + 2; } else { for (; start < i; start += 2) { var cur = st[start+1]; st[start+1] = cur ? cur + " " + style : style; } } }); } return st; } function getLineStyles(cm, line) { if (!line.styles || line.styles[0] != cm.state.modeGen) line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line))); return line.styles; } // Lightweight form of highlight -- proceed over this line and // update state, but don't save a style array. function processLine(cm, line, state) { var mode = cm.doc.mode; var stream = new StringStream(line.text, cm.options.tabSize); if (line.text == "" && mode.blankLine) mode.blankLine(state); while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) { mode.token(stream, state); stream.start = stream.pos; } } var styleToClassCache = {}; function styleToClass(style) { if (!style) return null; return styleToClassCache[style] || (styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-")); } function lineContent(cm, realLine, measure, copyWidgets) { var merged, line = realLine, empty = true; while (merged = collapsedSpanAtStart(line)) line = getLine(cm.doc, merged.find().from.line); var builder = {pre: elt("pre"), col: 0, pos: 0, measure: null, measuredSomething: false, cm: cm, copyWidgets: copyWidgets}; if (line.textClass) builder.pre.className = line.textClass; do { if (line.text) empty = false; builder.measure = line == realLine && measure; builder.pos = 0; builder.addToken = builder.measure ? buildTokenMeasure : buildToken; if ((ie || webkit) && cm.getOption("lineWrapping")) builder.addToken = buildTokenSplitSpaces(builder.addToken); var next = insertLineContent(line, builder, getLineStyles(cm, line)); if (measure && line == realLine && !builder.measuredSomething) { measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure)); builder.measuredSomething = true; } if (next) line = getLine(cm.doc, next.to.line); } while (next); if (measure && !builder.measuredSomething && !measure[0]) measure[0] = builder.pre.appendChild(empty ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure)); if (!builder.pre.firstChild && !lineIsHidden(cm.doc, realLine)) builder.pre.appendChild(document.createTextNode("\u00a0")); var order; // Work around problem with the reported dimensions of single-char // direction spans on IE (issue #1129). See also the comment in // cursorCoords. if (measure && ie && (order = getOrder(line))) { var l = order.length - 1; if (order[l].from == order[l].to) --l; var last = order[l], prev = order[l - 1]; if (last.from + 1 == last.to && prev && last.level < prev.level) { var span = measure[builder.pos - 1]; if (span) span.parentNode.insertBefore(span.measureRight = zeroWidthElement(cm.display.measure), span.nextSibling); } } signal(cm, "renderLine", cm, realLine, builder.pre); return builder.pre; } var tokenSpecialChars = /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\uFEFF]/g; function buildToken(builder, text, style, startStyle, endStyle, title) { if (!text) return; if (!tokenSpecialChars.test(text)) { builder.col += text.length; var content = document.createTextNode(text); } else { var content = document.createDocumentFragment(), pos = 0; while (true) { tokenSpecialChars.lastIndex = pos; var m = tokenSpecialChars.exec(text); var skipped = m ? m.index - pos : text.length - pos; if (skipped) { content.appendChild(document.createTextNode(text.slice(pos, pos + skipped))); builder.col += skipped; } if (!m) break; pos += skipped + 1; if (m[0] == "\t") { var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); builder.col += tabWidth; } else { var token = elt("span", "\u2022", "cm-invalidchar"); token.title = "\\u" + m[0].charCodeAt(0).toString(16); content.appendChild(token); builder.col += 1; } } } if (style || startStyle || endStyle || builder.measure) { var fullStyle = style || ""; if (startStyle) fullStyle += startStyle; if (endStyle) fullStyle += endStyle; var token = elt("span", [content], fullStyle); if (title) token.title = title; return builder.pre.appendChild(token); } builder.pre.appendChild(content); } function buildTokenMeasure(builder, text, style, startStyle, endStyle) { var wrapping = builder.cm.options.lineWrapping; for (var i = 0; i < text.length; ++i) { var ch = text.charAt(i), start = i == 0; if (ch >= "\ud800" && ch < "\udbff" && i < text.length - 1) { ch = text.slice(i, i + 2); ++i; } else if (i && wrapping && spanAffectsWrapping(text, i)) { builder.pre.appendChild(elt("wbr")); } var old = builder.measure[builder.pos]; var span = builder.measure[builder.pos] = buildToken(builder, ch, style, start && startStyle, i == text.length - 1 && endStyle); if (old) span.leftSide = old.leftSide || old; // In IE single-space nodes wrap differently than spaces // embedded in larger text nodes, except when set to // white-space: normal (issue #1268). if (ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) && i < text.length - 1 && !/\s/.test(text.charAt(i + 1))) span.style.whiteSpace = "normal"; builder.pos += ch.length; } if (text.length) builder.measuredSomething = true; } function buildTokenSplitSpaces(inner) { function split(old) { var out = " "; for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0"; out += " "; return out; } return function(builder, text, style, startStyle, endStyle, title) { return inner(builder, text.replace(/ {3,}/, split), style, startStyle, endStyle, title); }; } function buildCollapsedSpan(builder, size, marker, ignoreWidget) { var widget = !ignoreWidget && marker.replacedWith; if (widget) { if (builder.copyWidgets) widget = widget.cloneNode(true); builder.pre.appendChild(widget); if (builder.measure) { if (size) { builder.measure[builder.pos] = widget; } else { var elt = builder.measure[builder.pos] = zeroWidthElement(builder.cm.display.measure); if (marker.type != "bookmark" || marker.insertLeft) builder.pre.insertBefore(elt, widget); else builder.pre.appendChild(elt); } builder.measuredSomething = true; } } builder.pos += size; } // Outputs a number of spans to make up a line, taking highlighting // and marked text into account. function insertLineContent(line, builder, styles) { var spans = line.markedSpans, allText = line.text, at = 0; if (!spans) { for (var i = 1; i < styles.length; i+=2) builder.addToken(builder, allText.slice(at, at = styles[i]), styleToClass(styles[i+1])); return; } var len = allText.length, pos = 0, i = 1, text = "", style; var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed; for (;;) { if (nextChange == pos) { // Update current marker set spanStyle = spanEndStyle = spanStartStyle = title = ""; collapsed = null; nextChange = Infinity; var foundBookmark = null; for (var j = 0; j < spans.length; ++j) { var sp = spans[j], m = sp.marker; if (sp.from <= pos && (sp.to == null || sp.to > pos)) { if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; } if (m.className) spanStyle += " " + m.className; if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle; if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle; if (m.title && !title) title = m.title; if (m.collapsed && (!collapsed || collapsed.marker.size < m.size)) collapsed = sp; } else if (sp.from > pos && nextChange > sp.from) { nextChange = sp.from; } if (m.type == "bookmark" && sp.from == pos && m.replacedWith) foundBookmark = m; } if (collapsed && (collapsed.from || 0) == pos) { buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos, collapsed.marker, collapsed.from == null); if (collapsed.to == null) return collapsed.marker.find(); } if (foundBookmark && !collapsed) buildCollapsedSpan(builder, 0, foundBookmark); } if (pos >= len) break; var upto = Math.min(len, nextChange); while (true) { if (text) { var end = pos + text.length; if (!collapsed) { var tokenText = end > upto ? text.slice(0, upto - pos) : text; builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title); } if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} pos = end; spanStartStyle = ""; } text = allText.slice(at, at = styles[i++]); style = styleToClass(styles[i++]); } } } // DOCUMENT DATA STRUCTURE function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) { function spansFor(n) {return markedSpans ? markedSpans[n] : null;} function update(line, text, spans) { updateLine(line, text, spans, estimateHeight); signalLater(line, "change", line, change); } var from = change.from, to = change.to, text = change.text; var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line; // First adjust the line structure if (from.ch == 0 && to.ch == 0 && lastText == "") { // This is a whole-line replace. Treated specially to make // sure line objects move the way they are supposed to. for (var i = 0, e = text.length - 1, added = []; i < e; ++i) added.push(new Line(text[i], spansFor(i), estimateHeight)); update(lastLine, lastLine.text, lastSpans); if (nlines) doc.remove(from.line, nlines); if (added.length) doc.insert(from.line, added); } else if (firstLine == lastLine) { if (text.length == 1) { update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans); } else { for (var added = [], i = 1, e = text.length - 1; i < e; ++i) added.push(new Line(text[i], spansFor(i), estimateHeight)); added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)); update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); doc.insert(from.line + 1, added); } } else if (text.length == 1) { update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)); doc.remove(from.line + 1, nlines); } else { update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans); for (var i = 1, e = text.length - 1, added = []; i < e; ++i) added.push(new Line(text[i], spansFor(i), estimateHeight)); if (nlines > 1) doc.remove(from.line + 1, nlines - 1); doc.insert(from.line + 1, added); } signalLater(doc, "change", doc, change); setSelection(doc, selAfter.anchor, selAfter.head, null, true); } function LeafChunk(lines) { this.lines = lines; this.parent = null; for (var i = 0, e = lines.length, height = 0; i < e; ++i) { lines[i].parent = this; height += lines[i].height; } this.height = height; } LeafChunk.prototype = { chunkSize: function() { return this.lines.length; }, removeInner: function(at, n) { for (var i = at, e = at + n; i < e; ++i) { var line = this.lines[i]; this.height -= line.height; cleanUpLine(line); signalLater(line, "delete"); } this.lines.splice(at, n); }, collapse: function(lines) { lines.splice.apply(lines, [lines.length, 0].concat(this.lines)); }, insertInner: function(at, lines, height) { this.height += height; this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this; }, iterN: function(at, n, op) { for (var e = at + n; at < e; ++at) if (op(this.lines[at])) return true; } }; function BranchChunk(children) { this.children = children; var size = 0, height = 0; for (var i = 0, e = children.length; i < e; ++i) { var ch = children[i]; size += ch.chunkSize(); height += ch.height; ch.parent = this; } this.size = size; this.height = height; this.parent = null; } BranchChunk.prototype = { chunkSize: function() { return this.size; }, removeInner: function(at, n) { this.size -= n; for (var i = 0; i < this.children.length; ++i) { var child = this.children[i], sz = child.chunkSize(); if (at < sz) { var rm = Math.min(n, sz - at), oldHeight = child.height; child.removeInner(at, rm); this.height -= oldHeight - child.height; if (sz == rm) { this.children.splice(i--, 1); child.parent = null; } if ((n -= rm) == 0) break; at = 0; } else at -= sz; } if (this.size - n < 25) { var lines = []; this.collapse(lines); this.children = [new LeafChunk(lines)]; this.children[0].parent = this; } }, collapse: function(lines) { for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines); }, insertInner: function(at, lines, height) { this.size += lines.length; this.height += height; for (var i = 0, e = this.children.length; i < e; ++i) { var child = this.children[i], sz = child.chunkSize(); if (at <= sz) { child.insertInner(at, lines, height); if (child.lines && child.lines.length > 50) { while (child.lines.length > 50) { var spilled = child.lines.splice(child.lines.length - 25, 25); var newleaf = new LeafChunk(spilled); child.height -= newleaf.height; this.children.splice(i + 1, 0, newleaf); newleaf.parent = this; } this.maybeSpill(); } break; } at -= sz; } }, maybeSpill: function() { if (this.children.length <= 10) return; var me = this; do { var spilled = me.children.splice(me.children.length - 5, 5); var sibling = new BranchChunk(spilled); if (!me.parent) { // Become the parent node var copy = new BranchChunk(me.children); copy.parent = me; me.children = [copy, sibling]; me = copy; } else { me.size -= sibling.size; me.height -= sibling.height; var myIndex = indexOf(me.parent.children, me); me.parent.children.splice(myIndex + 1, 0, sibling); } sibling.parent = me.parent; } while (me.children.length > 10); me.parent.maybeSpill(); }, iterN: function(at, n, op) { for (var i = 0, e = this.children.length; i < e; ++i) { var child = this.children[i], sz = child.chunkSize(); if (at < sz) { var used = Math.min(n, sz - at); if (child.iterN(at, used, op)) return true; if ((n -= used) == 0) break; at = 0; } else at -= sz; } } }; var nextDocId = 0; var Doc = CodeMirror.Doc = function(text, mode, firstLine) { if (!(this instanceof Doc)) return new Doc(text, mode, firstLine); if (firstLine == null) firstLine = 0; BranchChunk.call(this, [new LeafChunk([new Line("", null)])]); this.first = firstLine; this.scrollTop = this.scrollLeft = 0; this.cantEdit = false; this.history = makeHistory(); this.cleanGeneration = 1; this.frontier = firstLine; var start = Pos(firstLine, 0); this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null}; this.id = ++nextDocId; this.modeOption = mode; if (typeof text == "string") text = splitLines(text); updateDoc(this, {from: start, to: start, text: text}, null, {head: start, anchor: start}); }; Doc.prototype = createObj(BranchChunk.prototype, { constructor: Doc, iter: function(from, to, op) { if (op) this.iterN(from - this.first, to - from, op); else this.iterN(this.first, this.first + this.size, from); }, insert: function(at, lines) { var height = 0; for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height; this.insertInner(at - this.first, lines, height); }, remove: function(at, n) { this.removeInner(at - this.first, n); }, getValue: function(lineSep) { var lines = getLines(this, this.first, this.first + this.size); if (lineSep === false) return lines; return lines.join(lineSep || "\n"); }, setValue: function(code) { var top = Pos(this.first, 0), last = this.first + this.size - 1; makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), text: splitLines(code), origin: "setValue"}, {head: top, anchor: top}, true); }, replaceRange: function(code, from, to, origin) { from = clipPos(this, from); to = to ? clipPos(this, to) : from; replaceRange(this, code, from, to, origin); }, getRange: function(from, to, lineSep) { var lines = getBetween(this, clipPos(this, from), clipPos(this, to)); if (lineSep === false) return lines; return lines.join(lineSep || "\n"); }, getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;}, setLine: function(line, text) { if (isLine(this, line)) replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line))); }, removeLine: function(line) { if (line) replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line))); else replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0))); }, getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);}, getLineNumber: function(line) {return lineNo(line);}, getLineHandleVisualStart: function(line) { if (typeof line == "number") line = getLine(this, line); return visualLine(this, line); }, lineCount: function() {return this.size;}, firstLine: function() {return this.first;}, lastLine: function() {return this.first + this.size - 1;}, clipPos: function(pos) {return clipPos(this, pos);}, getCursor: function(start) { var sel = this.sel, pos; if (start == null || start == "head") pos = sel.head; else if (start == "anchor") pos = sel.anchor; else if (start == "end" || start === false) pos = sel.to; else pos = sel.from; return copyPos(pos); }, somethingSelected: function() {return !posEq(this.sel.head, this.sel.anchor);}, setCursor: docOperation(function(line, ch, extend) { var pos = clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line); if (extend) extendSelection(this, pos); else setSelection(this, pos, pos); }), setSelection: docOperation(function(anchor, head) { setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor)); }), extendSelection: docOperation(function(from, to) { extendSelection(this, clipPos(this, from), to && clipPos(this, to)); }), getSelection: function(lineSep) {return this.getRange(this.sel.from, this.sel.to, lineSep);}, replaceSelection: function(code, collapse, origin) { makeChange(this, {from: this.sel.from, to: this.sel.to, text: splitLines(code), origin: origin}, collapse || "around"); }, undo: docOperation(function() {makeChangeFromHistory(this, "undo");}), redo: docOperation(function() {makeChangeFromHistory(this, "redo");}), setExtending: function(val) {this.sel.extend = val;}, historySize: function() { var hist = this.history; return {undo: hist.done.length, redo: hist.undone.length}; }, clearHistory: function() {this.history = makeHistory(this.history.maxGeneration);}, markClean: function() { this.cleanGeneration = this.changeGeneration(); }, changeGeneration: function() { this.history.lastOp = this.history.lastOrigin = null; return this.history.generation; }, isClean: function (gen) { return this.history.generation == (gen || this.cleanGeneration); }, getHistory: function() { return {done: copyHistoryArray(this.history.done), undone: copyHistoryArray(this.history.undone)}; }, setHistory: function(histData) { var hist = this.history = makeHistory(this.history.maxGeneration); hist.done = histData.done.slice(0); hist.undone = histData.undone.slice(0); }, markText: function(from, to, options) { return markText(this, clipPos(this, from), clipPos(this, to), options, "range"); }, setBookmark: function(pos, options) { var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), insertLeft: options && options.insertLeft}; pos = clipPos(this, pos); return markText(this, pos, pos, realOpts, "bookmark"); }, findMarksAt: function(pos) { pos = clipPos(this, pos); var markers = [], spans = getLine(this, pos.line).markedSpans; if (spans) for (var i = 0; i < spans.length; ++i) { var span = spans[i]; if ((span.from == null || span.from <= pos.ch) && (span.to == null || span.to >= pos.ch)) markers.push(span.marker.parent || span.marker); } return markers; }, getAllMarks: function() { var markers = []; this.iter(function(line) { var sps = line.markedSpans; if (sps) for (var i = 0; i < sps.length; ++i) if (sps[i].from != null) markers.push(sps[i].marker); }); return markers; }, posFromIndex: function(off) { var ch, lineNo = this.first; this.iter(function(line) { var sz = line.text.length + 1; if (sz > off) { ch = off; return true; } off -= sz; ++lineNo; }); return clipPos(this, Pos(lineNo, ch)); }, indexFromPos: function (coords) { coords = clipPos(this, coords); var index = coords.ch; if (coords.line < this.first || coords.ch < 0) return 0; this.iter(this.first, coords.line, function (line) { index += line.text.length + 1; }); return index; }, copy: function(copyHistory) { var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first); doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft; doc.sel = {from: this.sel.from, to: this.sel.to, head: this.sel.head, anchor: this.sel.anchor, shift: this.sel.shift, extend: false, goalColumn: this.sel.goalColumn}; if (copyHistory) { doc.history.undoDepth = this.history.undoDepth; doc.setHistory(this.getHistory()); } return doc; }, linkedDoc: function(options) { if (!options) options = {}; var from = this.first, to = this.first + this.size; if (options.from != null && options.from > from) from = options.from; if (options.to != null && options.to < to) to = options.to; var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from); if (options.sharedHist) copy.history = this.history; (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}); copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]; return copy; }, unlinkDoc: function(other) { if (other instanceof CodeMirror) other = other.doc; if (this.linked) for (var i = 0; i < this.linked.length; ++i) { var link = this.linked[i]; if (link.doc != other) continue; this.linked.splice(i, 1); other.unlinkDoc(this); break; } // If the histories were shared, split them again if (other.history == this.history) { var splitIds = [other.id]; linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true); other.history = makeHistory(); other.history.done = copyHistoryArray(this.history.done, splitIds); other.history.undone = copyHistoryArray(this.history.undone, splitIds); } }, iterLinkedDocs: function(f) {linkedDocs(this, f);}, getMode: function() {return this.mode;}, getEditor: function() {return this.cm;} }); Doc.prototype.eachLine = Doc.prototype.iter; // The Doc methods that should be available on CodeMirror instances var dontDelegate = "iter insert remove copy getEditor".split(" "); for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) CodeMirror.prototype[prop] = (function(method) { return function() {return method.apply(this.doc, arguments);}; })(Doc.prototype[prop]); eventMixin(Doc); function linkedDocs(doc, f, sharedHistOnly) { function propagate(doc, skip, sharedHist) { if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) { var rel = doc.linked[i]; if (rel.doc == skip) continue; var shared = sharedHist && rel.sharedHist; if (sharedHistOnly && !shared) continue; f(rel.doc, shared); propagate(rel.doc, doc, shared); } } propagate(doc, null, true); } function attachDoc(cm, doc) { if (doc.cm) throw new Error("This document is already in use."); cm.doc = doc; doc.cm = cm; estimateLineHeights(cm); loadMode(cm); if (!cm.options.lineWrapping) computeMaxLength(cm); cm.options.mode = doc.modeOption; regChange(cm); } // LINE UTILITIES function getLine(chunk, n) { n -= chunk.first; while (!chunk.lines) { for (var i = 0;; ++i) { var child = chunk.children[i], sz = child.chunkSize(); if (n < sz) { chunk = child; break; } n -= sz; } } return chunk.lines[n]; } function getBetween(doc, start, end) { var out = [], n = start.line; doc.iter(start.line, end.line + 1, function(line) { var text = line.text; if (n == end.line) text = text.slice(0, end.ch); if (n == start.line) text = text.slice(start.ch); out.push(text); ++n; }); return out; } function getLines(doc, from, to) { var out = []; doc.iter(from, to, function(line) { out.push(line.text); }); return out; } function updateLineHeight(line, height) { var diff = height - line.height; for (var n = line; n; n = n.parent) n.height += diff; } function lineNo(line) { if (line.parent == null) return null; var cur = line.parent, no = indexOf(cur.lines, line); for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { for (var i = 0;; ++i) { if (chunk.children[i] == cur) break; no += chunk.children[i].chunkSize(); } } return no + cur.first; } function lineAtHeight(chunk, h) { var n = chunk.first; outer: do { for (var i = 0, e = chunk.children.length; i < e; ++i) { var child = chunk.children[i], ch = child.height; if (h < ch) { chunk = child; continue outer; } h -= ch; n += child.chunkSize(); } return n; } while (!chunk.lines); for (var i = 0, e = chunk.lines.length; i < e; ++i) { var line = chunk.lines[i], lh = line.height; if (h < lh) break; h -= lh; } return n + i; } function heightAtLine(cm, lineObj) { lineObj = visualLine(cm.doc, lineObj); var h = 0, chunk = lineObj.parent; for (var i = 0; i < chunk.lines.length; ++i) { var line = chunk.lines[i]; if (line == lineObj) break; else h += line.height; } for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { for (var i = 0; i < p.children.length; ++i) { var cur = p.children[i]; if (cur == chunk) break; else h += cur.height; } } return h; } function getOrder(line) { var order = line.order; if (order == null) order = line.order = bidiOrdering(line.text); return order; } // HISTORY function makeHistory(startGen) { return { // Arrays of history events. Doing something adds an event to // done and clears undo. Undoing moves events from done to // undone, redoing moves them in the other direction. done: [], undone: [], undoDepth: Infinity, // Used to track when changes can be merged into a single undo // event lastTime: 0, lastOp: null, lastOrigin: null, // Used by the isClean() method generation: startGen || 1, maxGeneration: startGen || 1 }; } function attachLocalSpans(doc, change, from, to) { var existing = change["spans_" + doc.id], n = 0; doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) { if (line.markedSpans) (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; ++n; }); } function historyChangeFromChange(doc, change) { var from = { line: change.from.line, ch: change.from.ch }; var histChange = {from: from, to: changeEnd(change), text: getBetween(doc, change.from, change.to)}; attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true); return histChange; } function addToHistory(doc, change, selAfter, opId) { var hist = doc.history; hist.undone.length = 0; var time = +new Date, cur = lst(hist.done); if (cur && (hist.lastOp == opId || hist.lastOrigin == change.origin && change.origin && ((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) || change.origin.charAt(0) == "*"))) { // Merge this change into the last event var last = lst(cur.changes); if (posEq(change.from, change.to) && posEq(change.from, last.to)) { // Optimized case for simple insertion -- don't want to add // new changesets for every character typed last.to = changeEnd(change); } else { // Add new sub-event cur.changes.push(historyChangeFromChange(doc, change)); } cur.anchorAfter = selAfter.anchor; cur.headAfter = selAfter.head; } else { // Can not be merged, start a new event. cur = {changes: [historyChangeFromChange(doc, change)], generation: hist.generation, anchorBefore: doc.sel.anchor, headBefore: doc.sel.head, anchorAfter: selAfter.anchor, headAfter: selAfter.head}; hist.done.push(cur); hist.generation = ++hist.maxGeneration; while (hist.done.length > hist.undoDepth) hist.done.shift(); } hist.lastTime = time; hist.lastOp = opId; hist.lastOrigin = change.origin; } function removeClearedSpans(spans) { if (!spans) return null; for (var i = 0, out; i < spans.length; ++i) { if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); } else if (out) out.push(spans[i]); } return !out ? spans : out.length ? out : null; } function getOldSpans(doc, change) { var found = change["spans_" + doc.id]; if (!found) return null; for (var i = 0, nw = []; i < change.text.length; ++i) nw.push(removeClearedSpans(found[i])); return nw; } // Used both to provide a JSON-safe object in .getHistory, and, when // detaching a document, to split the history in two function copyHistoryArray(events, newGroup) { for (var i = 0, copy = []; i < events.length; ++i) { var event = events[i], changes = event.changes, newChanges = []; copy.push({changes: newChanges, anchorBefore: event.anchorBefore, headBefore: event.headBefore, anchorAfter: event.anchorAfter, headAfter: event.headAfter}); for (var j = 0; j < changes.length; ++j) { var change = changes[j], m; newChanges.push({from: change.from, to: change.to, text: change.text}); if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) { if (indexOf(newGroup, Number(m[1])) > -1) { lst(newChanges)[prop] = change[prop]; delete change[prop]; } } } } return copy; } // Rebasing/resetting history to deal with externally-sourced changes function rebaseHistSel(pos, from, to, diff) { if (to < pos.line) { pos.line += diff; } else if (from < pos.line) { pos.line = from; pos.ch = 0; } } // Tries to rebase an array of history events given a change in the // document. If the change touches the same lines as the event, the // event, and everything 'behind' it, is discarded. If the change is // before the event, the event's positions are updated. Uses a // copy-on-write scheme for the positions, to avoid having to // reallocate them all on every rebase, but also avoid problems with // shared position objects being unsafely updated. function rebaseHistArray(array, from, to, diff) { for (var i = 0; i < array.length; ++i) { var sub = array[i], ok = true; for (var j = 0; j < sub.changes.length; ++j) { var cur = sub.changes[j]; if (!sub.copied) { cur.from = copyPos(cur.from); cur.to = copyPos(cur.to); } if (to < cur.from.line) { cur.from.line += diff; cur.to.line += diff; } else if (from <= cur.to.line) { ok = false; break; } } if (!sub.copied) { sub.anchorBefore = copyPos(sub.anchorBefore); sub.headBefore = copyPos(sub.headBefore); sub.anchorAfter = copyPos(sub.anchorAfter); sub.readAfter = copyPos(sub.headAfter); sub.copied = true; } if (!ok) { array.splice(0, i + 1); i = 0; } else { rebaseHistSel(sub.anchorBefore); rebaseHistSel(sub.headBefore); rebaseHistSel(sub.anchorAfter); rebaseHistSel(sub.headAfter); } } } function rebaseHist(hist, change) { var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1; rebaseHistArray(hist.done, from, to, diff); rebaseHistArray(hist.undone, from, to, diff); } // EVENT OPERATORS function stopMethod() {e_stop(this);} // Ensure an event has a stop method. function addStop(event) { if (!event.stop) event.stop = stopMethod; return event; } function e_preventDefault(e) { if (e.preventDefault) e.preventDefault(); else e.returnValue = false; } function e_stopPropagation(e) { if (e.stopPropagation) e.stopPropagation(); else e.cancelBubble = true; } function e_defaultPrevented(e) { return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false; } function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);} CodeMirror.e_stop = e_stop; CodeMirror.e_preventDefault = e_preventDefault; CodeMirror.e_stopPropagation = e_stopPropagation; function e_target(e) {return e.target || e.srcElement;} function e_button(e) { var b = e.which; if (b == null) { if (e.button & 1) b = 1; else if (e.button & 2) b = 3; else if (e.button & 4) b = 2; } if (mac && e.ctrlKey && b == 1) b = 3; return b; } // EVENT HANDLING function on(emitter, type, f) { if (emitter.addEventListener) emitter.addEventListener(type, f, false); else if (emitter.attachEvent) emitter.attachEvent("on" + type, f); else { var map = emitter._handlers || (emitter._handlers = {}); var arr = map[type] || (map[type] = []); arr.push(f); } } function off(emitter, type, f) { if (emitter.removeEventListener) emitter.removeEventListener(type, f, false); else if (emitter.detachEvent) emitter.detachEvent("on" + type, f); else { var arr = emitter._handlers && emitter._handlers[type]; if (!arr) return; for (var i = 0; i < arr.length; ++i) if (arr[i] == f) { arr.splice(i, 1); break; } } } function signal(emitter, type /*, values...*/) { var arr = emitter._handlers && emitter._handlers[type]; if (!arr) return; var args = Array.prototype.slice.call(arguments, 2); for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args); } var delayedCallbacks, delayedCallbackDepth = 0; function signalLater(emitter, type /*, values...*/) { var arr = emitter._handlers && emitter._handlers[type]; if (!arr) return; var args = Array.prototype.slice.call(arguments, 2); if (!delayedCallbacks) { ++delayedCallbackDepth; delayedCallbacks = []; setTimeout(fireDelayed, 0); } function bnd(f) {return function(){f.apply(null, args);};}; for (var i = 0; i < arr.length; ++i) delayedCallbacks.push(bnd(arr[i])); } function signalDOMEvent(cm, e, override) { signal(cm, override || e.type, cm, e); return e_defaultPrevented(e) || e.codemirrorIgnore; } function fireDelayed() { --delayedCallbackDepth; var delayed = delayedCallbacks; delayedCallbacks = null; for (var i = 0; i < delayed.length; ++i) delayed[i](); } function hasHandler(emitter, type) { var arr = emitter._handlers && emitter._handlers[type]; return arr && arr.length > 0; } CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal; function eventMixin(ctor) { ctor.prototype.on = function(type, f) {on(this, type, f);}; ctor.prototype.off = function(type, f) {off(this, type, f);}; } // MISC UTILITIES // Number of pixels added to scroller and sizer to hide scrollbar var scrollerCutOff = 30; // Returned or thrown by various protocols to signal 'I'm not // handling this'. var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; function Delayed() {this.id = null;} Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}}; // Counts the column offset in a string, taking tabs into account. // Used mostly to find indentation. function countColumn(string, end, tabSize, startIndex, startValue) { if (end == null) { end = string.search(/[^\s\u00a0]/); if (end == -1) end = string.length; } for (var i = startIndex || 0, n = startValue || 0; i < end; ++i) { if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); else ++n; } return n; } CodeMirror.countColumn = countColumn; var spaceStrs = [""]; function spaceStr(n) { while (spaceStrs.length <= n) spaceStrs.push(lst(spaceStrs) + " "); return spaceStrs[n]; } function lst(arr) { return arr[arr.length-1]; } function selectInput(node) { if (ios) { // Mobile Safari apparently has a bug where select() is broken. node.selectionStart = 0; node.selectionEnd = node.value.length; } else { // Suppress mysterious IE10 errors try { node.select(); } catch(_e) {} } } function indexOf(collection, elt) { if (collection.indexOf) return collection.indexOf(elt); for (var i = 0, e = collection.length; i < e; ++i) if (collection[i] == elt) return i; return -1; } function createObj(base, props) { function Obj() {} Obj.prototype = base; var inst = new Obj(); if (props) copyObj(props, inst); return inst; } function copyObj(obj, target) { if (!target) target = {}; for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop]; return target; } function emptyArray(size) { for (var a = [], i = 0; i < size; ++i) a.push(undefined); return a; } function bind(f) { var args = Array.prototype.slice.call(arguments, 1); return function(){return f.apply(null, args);}; } var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; function isWordChar(ch) { return /\w/.test(ch) || ch > "\x80" && (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); } function isEmpty(obj) { for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false; return true; } 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\udc00-\udfff]/; // DOM UTILITIES function elt(tag, content, className, style) { var e = document.createElement(tag); if (className) e.className = className; if (style) e.style.cssText = style; if (typeof content == "string") setTextContent(e, content); else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]); return e; } function removeChildren(e) { for (var count = e.childNodes.length; count > 0; --count) e.removeChild(e.firstChild); return e; } function removeChildrenAndAdd(parent, e) { return removeChildren(parent).appendChild(e); } function setTextContent(e, str) { if (ie_lt9) { e.innerHTML = ""; e.appendChild(document.createTextNode(str)); } else e.textContent = str; } function getRect(node) { return node.getBoundingClientRect(); } CodeMirror.replaceGetRect = function(f) { getRect = f; }; // FEATURE DETECTION // Detect drag-and-drop var dragAndDrop = function() { // There is *some* kind of drag-and-drop support in IE6-8, but I // couldn't get it to work yet. if (ie_lt9) return false; var div = elt('div'); return "draggable" in div || "dragDrop" in div; }(); // For a reason I have yet to figure out, some browsers disallow // word wrapping between certain characters *only* if a new inline // element is started between them. This makes it hard to reliably // measure the position of things, since that requires inserting an // extra span. This terribly fragile set of tests matches the // character combinations that suffer from this phenomenon on the // various browsers. function spanAffectsWrapping() { return false; } if (gecko) // Only for "$'" spanAffectsWrapping = function(str, i) { return str.charCodeAt(i - 1) == 36 && str.charCodeAt(i) == 39; }; else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent)) spanAffectsWrapping = function(str, i) { return /\-[^ \-?]|\?[^ !\'\"\),.\-\/:;\?\]\}]/.test(str.slice(i - 1, i + 1)); }; else if (webkit && !/Chrome\/(?:29|[3-9]\d|\d\d\d)\./.test(navigator.userAgent)) spanAffectsWrapping = function(str, i) { if (i > 1 && str.charCodeAt(i - 1) == 45) { if (/\w/.test(str.charAt(i - 2)) && /[^\-?\.]/.test(str.charAt(i))) return true; if (i > 2 && /[\d\.,]/.test(str.charAt(i - 2)) && /[\d\.,]/.test(str.charAt(i))) return false; } return /[~!#%&*)=+}\]|\"\.>,:;][({[<]|-[^\-?\.\u2010-\u201f\u2026]|\?[\w~`@#$%\^&*(_=+{[|><]|…[\w~`@#$%\^&*(_=+{[><]/.test(str.slice(i - 1, i + 1)); }; var knownScrollbarWidth; function scrollbarWidth(measure) { if (knownScrollbarWidth != null) return knownScrollbarWidth; var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll"); removeChildrenAndAdd(measure, test); if (test.offsetWidth) knownScrollbarWidth = test.offsetHeight - test.clientHeight; return knownScrollbarWidth || 0; } var zwspSupported; function zeroWidthElement(measure) { if (zwspSupported == null) { var test = elt("span", "\u200b"); removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); if (measure.firstChild.offsetHeight != 0) zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8; } if (zwspSupported) return elt("span", "\u200b"); else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); } // See if "".split is the broken IE version, if so, provide an // alternative way to split lines. var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) { var pos = 0, result = [], l = string.length; while (pos <= l) { var nl = string.indexOf("\n", pos); if (nl == -1) nl = string.length; var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); var rt = line.indexOf("\r"); if (rt != -1) { result.push(line.slice(0, rt)); pos += rt + 1; } else { result.push(line); pos = nl + 1; } } return result; } : function(string){return string.split(/\r\n?|\n/);}; CodeMirror.splitLines = splitLines; var hasSelection = window.getSelection ? function(te) { try { return te.selectionStart != te.selectionEnd; } catch(e) { return false; } } : function(te) { try {var range = te.ownerDocument.selection.createRange();} catch(e) {} if (!range || range.parentElement() != te) return false; return range.compareEndPoints("StartToEnd", range) != 0; }; var hasCopyEvent = (function() { var e = elt("div"); if ("oncopy" in e) return true; e.setAttribute("oncopy", "return;"); return typeof e.oncopy == 'function'; })(); // KEY NAMING var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", 46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", 221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home", 63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"}; CodeMirror.keyNames = keyNames; (function() { // Number keys for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i); // Alphabetic keys for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i); // Function keys for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i; })(); // BIDI HELPERS function iterateBidiSections(order, from, to, f) { if (!order) return f(from, to, "ltr"); var found = false; for (var i = 0; i < order.length; ++i) { var part = order[i]; if (part.from < to && part.to > from || from == to && part.to == from) { f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr"); found = true; } } if (!found) f(from, to, "ltr"); } function bidiLeft(part) { return part.level % 2 ? part.to : part.from; } function bidiRight(part) { return part.level % 2 ? part.from : part.to; } function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; } function lineRight(line) { var order = getOrder(line); if (!order) return line.text.length; return bidiRight(lst(order)); } function lineStart(cm, lineN) { var line = getLine(cm.doc, lineN); var visual = visualLine(cm.doc, line); if (visual != line) lineN = lineNo(visual); var order = getOrder(visual); var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual); return Pos(lineN, ch); } function lineEnd(cm, lineN) { var merged, line; while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN))) lineN = merged.find().to.line; var order = getOrder(line); var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); return Pos(lineN, ch); } function compareBidiLevel(order, a, b) { var linedir = order[0].level; if (a == linedir) return true; if (b == linedir) return false; return a < b; } var bidiOther; function getBidiPartAt(order, pos) { for (var i = 0, found; i < order.length; ++i) { var cur = order[i]; if (cur.from < pos && cur.to > pos) { bidiOther = null; return i; } if (cur.from == pos || cur.to == pos) { if (found == null) { found = i; } else if (compareBidiLevel(order, cur.level, order[found].level)) { bidiOther = found; return i; } else { bidiOther = i; return found; } } } bidiOther = null; return found; } function moveInLine(line, pos, dir, byUnit) { if (!byUnit) return pos + dir; do pos += dir; while (pos > 0 && isExtendingChar.test(line.text.charAt(pos))); return pos; } // This is somewhat involved. It is needed in order to move // 'visually' through bi-directional text -- i.e., pressing left // should make the cursor go left, even when in RTL text. The // tricky part is the 'jumps', where RTL and LTR text touch each // other. This often requires the cursor offset to move more than // one unit, in order to visually move one unit. function moveVisually(line, start, dir, byUnit) { var bidi = getOrder(line); if (!bidi) return moveLogically(line, start, dir, byUnit); var pos = getBidiPartAt(bidi, start), part = bidi[pos]; var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit); for (;;) { if (target > part.from && target < part.to) return target; if (target == part.from || target == part.to) { if (getBidiPartAt(bidi, target) == pos) return target; part = bidi[pos += dir]; return (dir > 0) == part.level % 2 ? part.to : part.from; } else { part = bidi[pos += dir]; if (!part) return null; if ((dir > 0) == part.level % 2) target = moveInLine(line, part.to, -1, byUnit); else target = moveInLine(line, part.from, 1, byUnit); } } } function moveLogically(line, start, dir, byUnit) { var target = start + dir; if (byUnit) while (target > 0 && isExtendingChar.test(line.text.charAt(target))) target += dir; return target < 0 || target > line.text.length ? null : target; } // Bidirectional ordering algorithm // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm // that this (partially) implements. // One-char codes used for character types: // L (L): Left-to-Right // R (R): Right-to-Left // r (AL): Right-to-Left Arabic // 1 (EN): European Number // + (ES): European Number Separator // % (ET): European Number Terminator // n (AN): Arabic Number // , (CS): Common Number Separator // m (NSM): Non-Spacing Mark // b (BN): Boundary Neutral // s (B): Paragraph Separator // t (S): Segment Separator // w (WS): Whitespace // N (ON): Other Neutrals // Returns null if characters are ordered as they appear // (left-to-right), or an array of sections ({from, to, level} // objects) in the order in which they occur visually. var bidiOrdering = (function() { // Character types for codepoints 0 to 0xff var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL"; // Character types for codepoints 0x600 to 0x6ff var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr"; function charType(code) { if (code <= 0xff) return lowTypes.charAt(code); else if (0x590 <= code && code <= 0x5f4) return "R"; else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600); else if (0x700 <= code && code <= 0x8ac) return "r"; else return "L"; } var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; // Browsers seem to always treat the boundaries of block elements as being L. var outerType = "L"; return function(str) { if (!bidiRE.test(str)) return false; var len = str.length, types = []; for (var i = 0, type; i < len; ++i) types.push(type = charType(str.charCodeAt(i))); // W1. Examine each non-spacing mark (NSM) in the level run, and // change the type of the NSM to the type of the previous // character. If the NSM is at the start of the level run, it will // get the type of sor. for (var i = 0, prev = outerType; i < len; ++i) { var type = types[i]; if (type == "m") types[i] = prev; else prev = type; } // W2. Search backwards from each instance of a European number // until the first strong type (R, L, AL, or sor) is found. If an // AL is found, change the type of the European number to Arabic // number. // W3. Change all ALs to R. for (var i = 0, cur = outerType; i < len; ++i) { var type = types[i]; if (type == "1" && cur == "r") types[i] = "n"; else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; } } // W4. A single European separator between two European numbers // changes to a European number. A single common separator between // two numbers of the same type changes to that type. for (var i = 1, prev = types[0]; i < len - 1; ++i) { var type = types[i]; if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1"; else if (type == "," && prev == types[i+1] && (prev == "1" || prev == "n")) types[i] = prev; prev = type; } // W5. A sequence of European terminators adjacent to European // numbers changes to all European numbers. // W6. Otherwise, separators and terminators change to Other // Neutral. for (var i = 0; i < len; ++i) { var type = types[i]; if (type == ",") types[i] = "N"; else if (type == "%") { for (var end = i + 1; end < len && types[end] == "%"; ++end) {} var replace = (i && types[i-1] == "!") || (end < len - 1 && types[end] == "1") ? "1" : "N"; for (var j = i; j < end; ++j) types[j] = replace; i = end - 1; } } // W7. Search backwards from each instance of a European number // until the first strong type (R, L, or sor) is found. If an L is // found, then change the type of the European number to L. for (var i = 0, cur = outerType; i < len; ++i) { var type = types[i]; if (cur == "L" && type == "1") types[i] = "L"; else if (isStrong.test(type)) cur = type; } // N1. A sequence of neutrals takes the direction of the // surrounding strong text if the text on both sides has the same // direction. European and Arabic numbers act as if they were R in // terms of their influence on neutrals. Start-of-level-run (sor) // and end-of-level-run (eor) are used at level run boundaries. // N2. Any remaining neutrals take the embedding direction. for (var i = 0; i < len; ++i) { if (isNeutral.test(types[i])) { for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {} var before = (i ? types[i-1] : outerType) == "L"; var after = (end < len - 1 ? types[end] : outerType) == "L"; var replace = before || after ? "L" : "R"; for (var j = i; j < end; ++j) types[j] = replace; i = end - 1; } } // Here we depart from the documented algorithm, in order to avoid // building up an actual levels array. Since there are only three // levels (0, 1, 2) in an implementation that doesn't take // explicit embedding into account, we can build up the order on // the fly, without following the level-based algorithm. var order = [], m; for (var i = 0; i < len;) { if (countsAsLeft.test(types[i])) { var start = i; for (++i; i < len && countsAsLeft.test(types[i]); ++i) {} order.push({from: start, to: i, level: 0}); } else { var pos = i, at = order.length; for (++i; i < len && types[i] != "L"; ++i) {} for (var j = pos; j < i;) { if (countsAsNum.test(types[j])) { if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1}); var nstart = j; for (++j; j < i && countsAsNum.test(types[j]); ++j) {} order.splice(at, 0, {from: nstart, to: j, level: 2}); pos = j; } else ++j; } if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1}); } } if (order[0].level == 1 && (m = str.match(/^\s+/))) { order[0].from = m[0].length; order.unshift({from: 0, to: m[0].length, level: 0}); } if (lst(order).level == 1 && (m = str.match(/\s+$/))) { lst(order).to -= m[0].length; order.push({from: len - m[0].length, to: len, level: 0}); } if (order[0].level != lst(order).level) order.push({from: len, to: len, level: order[0].level}); return order; }; })(); // THE END CodeMirror.version = "3.15.0"; return CodeMirror; })(); |
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