| // CodeMirror version 3.16 |
| // |
| // 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 = /win/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 = ""; |
| d.scrollbarV.firstChild.style.height = "0"; |
| } |
| 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 = ""; |
| d.scrollbarH.firstChild.style.width = "0"; |
| } |
| 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 && changes[i].from < positionsChangedFrom) { positionsChangedFrom = changes[i].from; } |
| |
| 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 && 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 = ""; |
| if (cm.options.cursorBlinkRate > 0) |
| 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, maxScan = cm.doc.mode.innerMode ? 1000 : 100; |
| for (var search = n, lim = n - maxScan; 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)); |
| } |
| removeChildren(cm.display.measure); |
| 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; |
| if (cm.state.pasteIncoming && cm.state.fakedLastChar) { |
| input.value = input.value.substring(0, input.value.length - 1); |
| cm.state.fakedLastChar = 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() { |
| // Workaround for webkit bug https://bugs.webkit.org/show_bug.cgi?id=90206 |
| // Add a char to the end of textarea before paste occur so that |
| // selection doesn't span to the end of textarea. |
| if (webkit && !cm.state.fakedLastChar && !(new Date - cm.state.lastMiddleDown < 200)) { |
| var start = d.input.selectionStart, end = d.input.selectionEnd; |
| d.input.value += "$"; |
| d.input.selectionStart = start; |
| d.input.selectionEnd = end; |
| cm.state.fakedLastChar = true; |
| } |
| 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 (webkit) cm.state.lastMiddleDown = +new Date; |
| 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 (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; |
| if (ie && e.keyCode == 27) e.returnValue = false; |
| 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"; |
| if (!cm.curOp) { |
| resetInput(cm, true); |
| if (webkit) setTimeout(bind(resetInput, cm, true), 0); // Issue #1730 |
| } |
| } |
| 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; |
| if (this.type != "bookmark") pos = pos.from; |
| var line = getLine(this.doc, pos.line); |
| clearCachedMeasurement(cm, line); |
| if (pos.line >= cm.display.showingFrom && pos.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 = zeroWidthElement(builder.cm.display.measure); |
| if (marker.type == "bookmark" && !marker.insertLeft) |
| builder.measure[builder.pos] = builder.pre.appendChild(elt); |
| else if (builder.measure[builder.pos]) |
| return; |
| else |
| builder.measure[builder.pos] = builder.pre.insertBefore(elt, widget); |
| } |
| 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 foundBookmarks = []; |
| 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) foundBookmarks.push(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 (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j) |
| buildCollapsedSpan(builder, 0, foundBookmarks[j]); |
| } |
| 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, bias) { |
| setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), bias); |
| }), |
| extendSelection: docOperation(function(from, to, bias) { |
| extendSelection(this, clipPos(this, from), to && clipPos(this, to), bias); |
| }), |
| |
| 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 = "3.16.0"; |
| |
| return CodeMirror; |
| })(); |