Mercurial > kallithea
view rhodecode/public/js/codemirror.js @ 2729:e9e7c40b4f1a beta
added deque with maxlen for py2.5 compat
author | Marcin Kuzminski <marcin@python-works.com> |
---|---|
date | Wed, 22 Aug 2012 12:09:49 +0200 |
parents | 01273e4f8d63 |
children | f034e6a13a5e |
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// All functions that need access to the editor's state live inside // the CodeMirror function. Below that, at the bottom of the file, // some utilities are defined. // CodeMirror is the only global var we claim var CodeMirror = (function() { // This is the function that produces an editor instance. Its // closure is used to store the editor state. function CodeMirror(place, givenOptions) { // Determine effective options based on given values and defaults. var options = {}, defaults = CodeMirror.defaults; for (var opt in defaults) if (defaults.hasOwnProperty(opt)) options[opt] = (givenOptions && givenOptions.hasOwnProperty(opt) ? givenOptions : defaults)[opt]; // The element in which the editor lives. var wrapper = document.createElement("div"); wrapper.className = "CodeMirror" + (options.lineWrapping ? " CodeMirror-wrap" : ""); // This mess creates the base DOM structure for the editor. wrapper.innerHTML = '<div style="overflow: hidden; position: relative; width: 3px; height: 0px;">' + // Wraps and hides input textarea '<textarea style="position: absolute; padding: 0; width: 1px; height: 1em" wrap="off" ' + 'autocorrect="off" autocapitalize="off"></textarea></div>' + '<div class="CodeMirror-scrollbar">' + // The vertical scrollbar. Horizontal scrolling is handled by the scroller itself. '<div class="CodeMirror-scrollbar-inner">' + // The empty scrollbar content, used solely for managing the scrollbar thumb. '</div></div>' + // This must be before the scroll area because it's float-right. '<div class="CodeMirror-scroll" tabindex="-1">' + '<div style="position: relative">' + // Set to the height of the text, causes scrolling '<div style="position: relative">' + // Moved around its parent to cover visible view '<div class="CodeMirror-gutter"><div class="CodeMirror-gutter-text"></div></div>' + // Provides positioning relative to (visible) text origin '<div class="CodeMirror-lines"><div style="position: relative; z-index: 0">' + // Used to measure text size '<div style="position: absolute; width: 100%; height: 0; overflow: hidden; visibility: hidden;"></div>' + '<pre class="CodeMirror-cursor"> </pre>' + // Absolutely positioned blinky cursor '<pre class="CodeMirror-cursor" style="visibility: hidden"> </pre>' + // Used to force a width '<div style="position: relative; z-index: -1"></div><div></div>' + // DIVs containing the selection and the actual code '</div></div></div></div></div>'; if (place.appendChild) place.appendChild(wrapper); else place(wrapper); // I've never seen more elegant code in my life. var inputDiv = wrapper.firstChild, input = inputDiv.firstChild, scroller = wrapper.lastChild, code = scroller.firstChild, mover = code.firstChild, gutter = mover.firstChild, gutterText = gutter.firstChild, lineSpace = gutter.nextSibling.firstChild, measure = lineSpace.firstChild, cursor = measure.nextSibling, widthForcer = cursor.nextSibling, selectionDiv = widthForcer.nextSibling, lineDiv = selectionDiv.nextSibling, scrollbar = inputDiv.nextSibling, scrollbarInner = scrollbar.firstChild; themeChanged(); keyMapChanged(); // Needed to hide big blue blinking cursor on Mobile Safari if (ios) input.style.width = "0px"; if (!webkit) scroller.draggable = true; lineSpace.style.outline = "none"; if (options.tabindex != null) input.tabIndex = options.tabindex; if (options.autofocus) focusInput(); if (!options.gutter && !options.lineNumbers) gutter.style.display = "none"; // Needed to handle Tab key in KHTML if (khtml) inputDiv.style.height = "1px", inputDiv.style.position = "absolute"; // Check for OS X >= 10.7. If so, we need to force a width on the scrollbar, and // make it overlap the content. (But we only do this if the scrollbar doesn't already // have a natural width. If the mouse is plugged in or the user sets the system pref // to always show scrollbars, the scrollbar shouldn't overlap.) if (mac_geLion) { scrollbar.className += (overlapScrollbars() ? " cm-sb-overlap" : " cm-sb-nonoverlap"); } else if (ie_lt8) { // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). scrollbar.className += " cm-sb-ie7"; } // Check for problem with IE innerHTML not working when we have a // P (or similar) parent node. try { stringWidth("x"); } catch (e) { if (e.message.match(/runtime/i)) e = new Error("A CodeMirror inside a P-style element does not work in Internet Explorer. (innerHTML bug)"); throw e; } // Delayed object wrap timeouts, making sure only one is active. blinker holds an interval. var poll = new Delayed(), highlight = new Delayed(), blinker; // mode holds a mode API object. doc is the tree of Line objects, // work an array of lines that should be parsed, and history the // undo history (instance of History constructor). var mode, doc = new BranchChunk([new LeafChunk([new Line("")])]), work, focused; loadMode(); // The selection. These are always maintained to point at valid // positions. Inverted is used to remember that the user is // selecting bottom-to-top. var sel = {from: {line: 0, ch: 0}, to: {line: 0, ch: 0}, inverted: false}; // Selection-related flags. shiftSelecting obviously tracks // whether the user is holding shift. var shiftSelecting, lastClick, lastDoubleClick, lastScrollTop = 0, lastScrollLeft = 0, draggingText, overwrite = false, suppressEdits = false; // Variables used by startOperation/endOperation to track what // happened during the operation. var updateInput, userSelChange, changes, textChanged, selectionChanged, leaveInputAlone, gutterDirty, callbacks; // Current visible range (may be bigger than the view window). var displayOffset = 0, showingFrom = 0, showingTo = 0, lastSizeC = 0; // bracketHighlighted is used to remember that a bracket has been // marked. var bracketHighlighted; // Tracks the maximum line length so that the horizontal scrollbar // can be kept static when scrolling. var maxLine = "", updateMaxLine = false, maxLineChanged = true; var tabCache = {}; // Initialize the content. operation(function(){setValue(options.value || ""); updateInput = false;})(); var history = new History(); // Register our event handlers. connect(scroller, "mousedown", operation(onMouseDown)); connect(scroller, "dblclick", operation(onDoubleClick)); connect(lineSpace, "selectstart", e_preventDefault); // 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 (!gecko) connect(scroller, "contextmenu", onContextMenu); connect(scroller, "scroll", onScroll); connect(scrollbar, "scroll", onScroll); connect(scrollbar, "mousedown", function() {setTimeout(focusInput, 0);}); connect(scroller, "mousewheel", onMouseWheel); connect(scroller, "DOMMouseScroll", onMouseWheel); connect(window, "resize", function() {updateDisplay(true);}); connect(input, "keyup", operation(onKeyUp)); connect(input, "input", fastPoll); connect(input, "keydown", operation(onKeyDown)); connect(input, "keypress", operation(onKeyPress)); connect(input, "focus", onFocus); connect(input, "blur", onBlur); if (options.dragDrop) { connect(scroller, "dragstart", onDragStart); function drag_(e) { if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return; e_stop(e); } connect(scroller, "dragenter", drag_); connect(scroller, "dragover", drag_); connect(scroller, "drop", operation(onDrop)); } connect(scroller, "paste", function(){focusInput(); fastPoll();}); connect(input, "paste", fastPoll); connect(input, "cut", operation(function(){ if (!options.readOnly) replaceSelection(""); })); // Needed to handle Tab key in KHTML if (khtml) connect(code, "mouseup", function() { if (document.activeElement == input) input.blur(); focusInput(); }); // IE throws unspecified error in certain cases, when // trying to access activeElement before onload var hasFocus; try { hasFocus = (document.activeElement == input); } catch(e) { } if (hasFocus || options.autofocus) setTimeout(onFocus, 20); else onBlur(); function isLine(l) {return l >= 0 && l < doc.size;} // The instance object that we'll return. Mostly calls out to // local functions in the CodeMirror function. Some do some extra // range checking and/or clipping. operation is used to wrap the // call so that changes it makes are tracked, and the display is // updated afterwards. var instance = wrapper.CodeMirror = { getValue: getValue, setValue: operation(setValue), getSelection: getSelection, replaceSelection: operation(replaceSelection), focus: function(){window.focus(); focusInput(); onFocus(); fastPoll();}, setOption: function(option, value) { var oldVal = options[option]; options[option] = value; if (option == "mode" || option == "indentUnit") loadMode(); else if (option == "readOnly" && value == "nocursor") {onBlur(); input.blur();} else if (option == "readOnly" && !value) {resetInput(true);} else if (option == "theme") themeChanged(); else if (option == "lineWrapping" && oldVal != value) operation(wrappingChanged)(); else if (option == "tabSize") updateDisplay(true); else if (option == "keyMap") keyMapChanged(); if (option == "lineNumbers" || option == "gutter" || option == "firstLineNumber" || option == "theme") { gutterChanged(); updateDisplay(true); } }, getOption: function(option) {return options[option];}, undo: operation(undo), redo: operation(redo), indentLine: operation(function(n, dir) { if (typeof dir != "string") { if (dir == null) dir = options.smartIndent ? "smart" : "prev"; else dir = dir ? "add" : "subtract"; } if (isLine(n)) indentLine(n, dir); }), indentSelection: operation(indentSelected), historySize: function() {return {undo: history.done.length, redo: history.undone.length};}, clearHistory: function() {history = new History();}, matchBrackets: operation(function(){matchBrackets(true);}), getTokenAt: operation(function(pos) { pos = clipPos(pos); return getLine(pos.line).getTokenAt(mode, getStateBefore(pos.line), pos.ch); }), getStateAfter: function(line) { line = clipLine(line == null ? doc.size - 1: line); return getStateBefore(line + 1); }, cursorCoords: function(start, mode) { if (start == null) start = sel.inverted; return this.charCoords(start ? sel.from : sel.to, mode); }, charCoords: function(pos, mode) { pos = clipPos(pos); if (mode == "local") return localCoords(pos, false); if (mode == "div") return localCoords(pos, true); return pageCoords(pos); }, coordsChar: function(coords) { var off = eltOffset(lineSpace); return coordsChar(coords.x - off.left, coords.y - off.top); }, markText: operation(markText), setBookmark: setBookmark, findMarksAt: findMarksAt, setMarker: operation(addGutterMarker), clearMarker: operation(removeGutterMarker), setLineClass: operation(setLineClass), hideLine: operation(function(h) {return setLineHidden(h, true);}), showLine: operation(function(h) {return setLineHidden(h, false);}), onDeleteLine: function(line, f) { if (typeof line == "number") { if (!isLine(line)) return null; line = getLine(line); } (line.handlers || (line.handlers = [])).push(f); return line; }, lineInfo: lineInfo, addWidget: function(pos, node, scroll, vert, horiz) { pos = localCoords(clipPos(pos)); var top = pos.yBot, left = pos.x; node.style.position = "absolute"; code.appendChild(node); if (vert == "over") top = pos.y; else if (vert == "near") { var vspace = Math.max(scroller.offsetHeight, doc.height * textHeight()), hspace = Math.max(code.clientWidth, lineSpace.clientWidth) - paddingLeft(); if (pos.yBot + node.offsetHeight > vspace && pos.y > node.offsetHeight) top = pos.y - node.offsetHeight; if (left + node.offsetWidth > hspace) left = hspace - node.offsetWidth; } node.style.top = (top + paddingTop()) + "px"; node.style.left = node.style.right = ""; if (horiz == "right") { left = code.clientWidth - node.offsetWidth; node.style.right = "0px"; } else { if (horiz == "left") left = 0; else if (horiz == "middle") left = (code.clientWidth - node.offsetWidth) / 2; node.style.left = (left + paddingLeft()) + "px"; } if (scroll) scrollIntoView(left, top, left + node.offsetWidth, top + node.offsetHeight); }, lineCount: function() {return doc.size;}, clipPos: clipPos, getCursor: function(start) { if (start == null) start = sel.inverted; return copyPos(start ? sel.from : sel.to); }, somethingSelected: function() {return !posEq(sel.from, sel.to);}, setCursor: operation(function(line, ch, user) { if (ch == null && typeof line.line == "number") setCursor(line.line, line.ch, user); else setCursor(line, ch, user); }), setSelection: operation(function(from, to, user) { (user ? setSelectionUser : setSelection)(clipPos(from), clipPos(to || from)); }), getLine: function(line) {if (isLine(line)) return getLine(line).text;}, getLineHandle: function(line) {if (isLine(line)) return getLine(line);}, setLine: operation(function(line, text) { if (isLine(line)) replaceRange(text, {line: line, ch: 0}, {line: line, ch: getLine(line).text.length}); }), removeLine: operation(function(line) { if (isLine(line)) replaceRange("", {line: line, ch: 0}, clipPos({line: line+1, ch: 0})); }), replaceRange: operation(replaceRange), getRange: function(from, to) {return getRange(clipPos(from), clipPos(to));}, triggerOnKeyDown: operation(onKeyDown), execCommand: function(cmd) {return commands[cmd](instance);}, // Stuff used by commands, probably not much use to outside code. moveH: operation(moveH), deleteH: operation(deleteH), moveV: operation(moveV), toggleOverwrite: function() { if(overwrite){ overwrite = false; cursor.className = cursor.className.replace(" CodeMirror-overwrite", ""); } else { overwrite = true; cursor.className += " CodeMirror-overwrite"; } }, posFromIndex: function(off) { var lineNo = 0, ch; doc.iter(0, doc.size, function(line) { var sz = line.text.length + 1; if (sz > off) { ch = off; return true; } off -= sz; ++lineNo; }); return clipPos({line: lineNo, ch: ch}); }, indexFromPos: function (coords) { if (coords.line < 0 || coords.ch < 0) return 0; var index = coords.ch; doc.iter(0, coords.line, function (line) { index += line.text.length + 1; }); return index; }, scrollTo: function(x, y) { if (x != null) scroller.scrollLeft = x; if (y != null) scrollbar.scrollTop = y; updateDisplay([]); }, getScrollInfo: function() { return {x: scroller.scrollLeft, y: scrollbar.scrollTop, height: scrollbar.scrollHeight, width: scroller.scrollWidth}; }, operation: function(f){return operation(f)();}, compoundChange: function(f){return compoundChange(f);}, refresh: function(){ updateDisplay(true); if (scrollbar.scrollHeight > lastScrollTop) scrollbar.scrollTop = lastScrollTop; }, getInputField: function(){return input;}, getWrapperElement: function(){return wrapper;}, getScrollerElement: function(){return scroller;}, getGutterElement: function(){return gutter;} }; function getLine(n) { return getLineAt(doc, n); } function updateLineHeight(line, height) { gutterDirty = true; var diff = height - line.height; for (var n = line; n; n = n.parent) n.height += diff; } function setValue(code) { var top = {line: 0, ch: 0}; updateLines(top, {line: doc.size - 1, ch: getLine(doc.size-1).text.length}, splitLines(code), top, top); updateInput = true; } function getValue() { var text = []; doc.iter(0, doc.size, function(line) { text.push(line.text); }); return text.join("\n"); } function onScroll(e) { if (lastScrollTop != scrollbar.scrollTop || lastScrollLeft != scroller.scrollLeft) { lastScrollTop = scrollbar.scrollTop; lastScrollLeft = scroller.scrollLeft; updateDisplay([]); if (options.fixedGutter) gutter.style.left = scroller.scrollLeft + "px"; if (options.onScroll) options.onScroll(instance); } } function onMouseDown(e) { setShift(e_prop(e, "shiftKey")); // Check whether this is a click in a widget for (var n = e_target(e); n != wrapper; n = n.parentNode) if (n.parentNode == code && n != mover) return; // See if this is a click in the gutter for (var n = e_target(e); n != wrapper; n = n.parentNode) if (n.parentNode == gutterText) { if (options.onGutterClick) options.onGutterClick(instance, indexOf(gutterText.childNodes, n) + showingFrom, e); return e_preventDefault(e); } var start = posFromMouse(e); switch (e_button(e)) { case 3: if (gecko && !mac) onContextMenu(e); return; case 2: if (start) setCursor(start.line, start.ch, true); setTimeout(focusInput, 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) == scroller) e_preventDefault(e); return;} if (!focused) onFocus(); var now = +new Date; if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) { e_preventDefault(e); setTimeout(focusInput, 20); return selectLine(start.line); } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) { lastDoubleClick = {time: now, pos: start}; e_preventDefault(e); return selectWordAt(start); } else { lastClick = {time: now, pos: start}; } var last = start, going; if (options.dragDrop && dragAndDrop && !options.readOnly && !posEq(sel.from, sel.to) && !posLess(start, sel.from) && !posLess(sel.to, start)) { // Let the drag handler handle this. if (webkit) scroller.draggable = true; function dragEnd(e2) { if (webkit) scroller.draggable = false; draggingText = false; up(); drop(); if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) { e_preventDefault(e2); setCursor(start.line, start.ch, true); focusInput(); } } var up = connect(document, "mouseup", operation(dragEnd), true); var drop = connect(scroller, "drop", operation(dragEnd), true); draggingText = true; // IE's approach to draggable if (scroller.dragDrop) scroller.dragDrop(); return; } e_preventDefault(e); setCursor(start.line, start.ch, true); function extend(e) { var cur = posFromMouse(e, true); if (cur && !posEq(cur, last)) { if (!focused) onFocus(); last = cur; setSelectionUser(start, cur); updateInput = false; var visible = visibleLines(); if (cur.line >= visible.to || cur.line < visible.from) going = setTimeout(operation(function(){extend(e);}), 150); } } function done(e) { clearTimeout(going); var cur = posFromMouse(e); if (cur) setSelectionUser(start, cur); e_preventDefault(e); focusInput(); updateInput = true; move(); up(); } var move = connect(document, "mousemove", operation(function(e) { clearTimeout(going); e_preventDefault(e); if (!ie && !e_button(e)) done(e); else extend(e); }), true); var up = connect(document, "mouseup", operation(done), true); } function onDoubleClick(e) { for (var n = e_target(e); n != wrapper; n = n.parentNode) if (n.parentNode == gutterText) return e_preventDefault(e); var start = posFromMouse(e); if (!start) return; lastDoubleClick = {time: +new Date, pos: start}; e_preventDefault(e); selectWordAt(start); } function onDrop(e) { if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return; e.preventDefault(); var pos = posFromMouse(e, true), files = e.dataTransfer.files; if (!pos || options.readOnly) return; if (files && files.length && window.FileReader && window.File) { function loadFile(file, i) { var reader = new FileReader; reader.onload = function() { text[i] = reader.result; if (++read == n) { pos = clipPos(pos); operation(function() { var end = replaceRange(text.join(""), pos, pos); setSelectionUser(pos, end); })(); } }; reader.readAsText(file); } var n = files.length, text = Array(n), read = 0; 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 (draggingText && !(posLess(pos, sel.from) || posLess(sel.to, pos))) return; try { var text = e.dataTransfer.getData("Text"); if (text) { compoundChange(function() { var curFrom = sel.from, curTo = sel.to; setSelectionUser(pos, pos); if (draggingText) replaceRange("", curFrom, curTo); replaceSelection(text); focusInput(); }); } } catch(e){} } } function onDragStart(e) { var txt = getSelection(); e.dataTransfer.setData("Text", txt); // Use dummy image instead of default browsers image. if (gecko || chrome || opera) { var img = document.createElement('img'); img.scr = 'data:image/gif;base64,R0lGODdhAgACAIAAAAAAAP///ywAAAAAAgACAAACAoRRADs='; //1x1 image e.dataTransfer.setDragImage(img, 0, 0); } } function doHandleBinding(bound, dropShift) { if (typeof bound == "string") { bound = commands[bound]; if (!bound) return false; } var prevShift = shiftSelecting; try { if (options.readOnly) suppressEdits = true; if (dropShift) shiftSelecting = null; bound(instance); } catch(e) { if (e != Pass) throw e; return false; } finally { shiftSelecting = prevShift; suppressEdits = false; } return true; } function handleKeyBinding(e) { // Handle auto keymap transitions var startMap = getKeyMap(options.keyMap), next = startMap.auto; clearTimeout(maybeTransition); if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() { if (getKeyMap(options.keyMap) == startMap) { options.keyMap = (next.call ? next.call(null, instance) : next); } }, 50); var name = keyNames[e_prop(e, "keyCode")], handled = false; if (name == null || e.altGraphKey) return false; if (e_prop(e, "altKey")) name = "Alt-" + name; if (e_prop(e, "ctrlKey")) name = "Ctrl-" + name; if (e_prop(e, "metaKey")) name = "Cmd-" + name; var stopped = false; function stop() { stopped = true; } if (e_prop(e, "shiftKey")) { handled = lookupKey("Shift-" + name, options.extraKeys, options.keyMap, function(b) {return doHandleBinding(b, true);}, stop) || lookupKey(name, options.extraKeys, options.keyMap, function(b) { if (typeof b == "string" && /^go[A-Z]/.test(b)) return doHandleBinding(b); }, stop); } else { handled = lookupKey(name, options.extraKeys, options.keyMap, doHandleBinding, stop); } if (stopped) handled = false; if (handled) { e_preventDefault(e); restartBlink(); if (ie) { e.oldKeyCode = e.keyCode; e.keyCode = 0; } } return handled; } function handleCharBinding(e, ch) { var handled = lookupKey("'" + ch + "'", options.extraKeys, options.keyMap, function(b) { return doHandleBinding(b, true); }); if (handled) { e_preventDefault(e); restartBlink(); } return handled; } var lastStoppedKey = null, maybeTransition; function onKeyDown(e) { if (!focused) onFocus(); if (ie && e.keyCode == 27) { e.returnValue = false; } if (pollingFast) { if (readInput()) pollingFast = false; } if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return; var code = e_prop(e, "keyCode"); // IE does strange things with escape. setShift(code == 16 || e_prop(e, "shiftKey")); // First give onKeyEvent option a chance to handle this. var handled = handleKeyBinding(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 && e_prop(e, mac ? "metaKey" : "ctrlKey")) replaceSelection(""); } } function onKeyPress(e) { if (pollingFast) readInput(); if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return; var keyCode = e_prop(e, "keyCode"), charCode = e_prop(e, "charCode"); if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;} if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(e)) return; var ch = String.fromCharCode(charCode == null ? keyCode : charCode); if (options.electricChars && mode.electricChars && options.smartIndent && !options.readOnly) { if (mode.electricChars.indexOf(ch) > -1) setTimeout(operation(function() {indentLine(sel.to.line, "smart");}), 75); } if (handleCharBinding(e, ch)) return; fastPoll(); } function onKeyUp(e) { if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return; if (e_prop(e, "keyCode") == 16) shiftSelecting = null; } function onFocus() { if (options.readOnly == "nocursor") return; if (!focused) { if (options.onFocus) options.onFocus(instance); focused = true; if (scroller.className.search(/\bCodeMirror-focused\b/) == -1) scroller.className += " CodeMirror-focused"; if (!leaveInputAlone) resetInput(true); } slowPoll(); restartBlink(); } function onBlur() { if (focused) { if (options.onBlur) options.onBlur(instance); focused = false; if (bracketHighlighted) operation(function(){ if (bracketHighlighted) { bracketHighlighted(); bracketHighlighted = null; } })(); scroller.className = scroller.className.replace(" CodeMirror-focused", ""); } clearInterval(blinker); setTimeout(function() {if (!focused) shiftSelecting = null;}, 150); } function chopDelta(delta) { // Make sure we always scroll a little bit for any nonzero delta. if (delta > 0.0 && delta < 1.0) return 1; else if (delta > -1.0 && delta < 0.0) return -1; else return Math.round(delta); } function onMouseWheel(e) { var deltaX = 0, deltaY = 0; if (e.type == "DOMMouseScroll") { // Firefox var delta = -e.detail * 8.0; if (e.axis == e.HORIZONTAL_AXIS) deltaX = delta; else if (e.axis == e.VERTICAL_AXIS) deltaY = delta; } else if (e.wheelDeltaX !== undefined && e.wheelDeltaY !== undefined) { // WebKit deltaX = e.wheelDeltaX / 3.0; deltaY = e.wheelDeltaY / 3.0; } else if (e.wheelDelta !== undefined) { // IE or Opera deltaY = e.wheelDelta / 3.0; } var scrolled = false; deltaX = chopDelta(deltaX); deltaY = chopDelta(deltaY); if ((deltaX > 0 && scroller.scrollLeft > 0) || (deltaX < 0 && scroller.scrollLeft + scroller.clientWidth < scroller.scrollWidth)) { scroller.scrollLeft -= deltaX; scrolled = true; } if ((deltaY > 0 && scrollbar.scrollTop > 0) || (deltaY < 0 && scrollbar.scrollTop + scrollbar.clientHeight < scrollbar.scrollHeight)) { scrollbar.scrollTop -= deltaY; scrolled = true; } if (scrolled) e_stop(e); } // Replace the range from from to to by the strings in newText. // Afterwards, set the selection to selFrom, selTo. function updateLines(from, to, newText, selFrom, selTo) { if (suppressEdits) return; if (history) { var old = []; doc.iter(from.line, to.line + 1, function(line) { old.push(line.text); }); history.addChange(from.line, newText.length, old); while (history.done.length > options.undoDepth) history.done.shift(); } updateLinesNoUndo(from, to, newText, selFrom, selTo); } function unredoHelper(from, to) { if (!from.length) return; var set = from.pop(), out = []; for (var i = set.length - 1; i >= 0; i -= 1) { var change = set[i]; var replaced = [], end = change.start + change.added; doc.iter(change.start, end, function(line) { replaced.push(line.text); }); out.push({start: change.start, added: change.old.length, old: replaced}); var pos = {line: change.start + change.old.length - 1, ch: editEnd(replaced[replaced.length-1], change.old[change.old.length-1])}; updateLinesNoUndo({line: change.start, ch: 0}, {line: end - 1, ch: getLine(end-1).text.length}, change.old, pos, pos); } updateInput = true; to.push(out); } function undo() {unredoHelper(history.done, history.undone);} function redo() {unredoHelper(history.undone, history.done);} function updateLinesNoUndo(from, to, newText, selFrom, selTo) { if (suppressEdits) return; var recomputeMaxLength = false, maxLineLength = maxLine.length; if (!options.lineWrapping) doc.iter(from.line, to.line + 1, function(line) { if (!line.hidden && line.text.length == maxLineLength) {recomputeMaxLength = true; return true;} }); if (from.line != to.line || newText.length > 1) gutterDirty = true; var nlines = to.line - from.line, firstLine = getLine(from.line), lastLine = getLine(to.line); // First adjust the line structure, taking some care to leave highlighting intact. if (from.ch == 0 && to.ch == 0 && newText[newText.length - 1] == "") { // This is a whole-line replace. Treated specially to make // sure line objects move the way they are supposed to. var added = [], prevLine = null; if (from.line) { prevLine = getLine(from.line - 1); prevLine.fixMarkEnds(lastLine); } else lastLine.fixMarkStarts(); for (var i = 0, e = newText.length - 1; i < e; ++i) added.push(Line.inheritMarks(newText[i], prevLine)); if (nlines) doc.remove(from.line, nlines, callbacks); if (added.length) doc.insert(from.line, added); } else if (firstLine == lastLine) { if (newText.length == 1) firstLine.replace(from.ch, to.ch, newText[0]); else { lastLine = firstLine.split(to.ch, newText[newText.length-1]); firstLine.replace(from.ch, null, newText[0]); firstLine.fixMarkEnds(lastLine); var added = []; for (var i = 1, e = newText.length - 1; i < e; ++i) added.push(Line.inheritMarks(newText[i], firstLine)); added.push(lastLine); doc.insert(from.line + 1, added); } } else if (newText.length == 1) { firstLine.replace(from.ch, null, newText[0]); lastLine.replace(null, to.ch, ""); firstLine.append(lastLine); doc.remove(from.line + 1, nlines, callbacks); } else { var added = []; firstLine.replace(from.ch, null, newText[0]); lastLine.replace(null, to.ch, newText[newText.length-1]); firstLine.fixMarkEnds(lastLine); for (var i = 1, e = newText.length - 1; i < e; ++i) added.push(Line.inheritMarks(newText[i], firstLine)); if (nlines > 1) doc.remove(from.line + 1, nlines - 1, callbacks); doc.insert(from.line + 1, added); } if (options.lineWrapping) { var perLine = Math.max(5, scroller.clientWidth / charWidth() - 3); doc.iter(from.line, from.line + newText.length, function(line) { if (line.hidden) return; var guess = Math.ceil(line.text.length / perLine) || 1; if (guess != line.height) updateLineHeight(line, guess); }); } else { doc.iter(from.line, from.line + newText.length, function(line) { var l = line.text; if (!line.hidden && l.length > maxLineLength) { maxLine = l; maxLineLength = l.length; maxLineChanged = true; recomputeMaxLength = false; } }); if (recomputeMaxLength) updateMaxLine = true; } // Add these lines to the work array, so that they will be // highlighted. Adjust work lines if lines were added/removed. var newWork = [], lendiff = newText.length - nlines - 1; for (var i = 0, l = work.length; i < l; ++i) { var task = work[i]; if (task < from.line) newWork.push(task); else if (task > to.line) newWork.push(task + lendiff); } var hlEnd = from.line + Math.min(newText.length, 500); highlightLines(from.line, hlEnd); newWork.push(hlEnd); work = newWork; startWorker(100); // Remember that these lines changed, for updating the display changes.push({from: from.line, to: to.line + 1, diff: lendiff}); var changeObj = {from: from, to: to, text: newText}; if (textChanged) { for (var cur = textChanged; cur.next; cur = cur.next) {} cur.next = changeObj; } else textChanged = changeObj; // Update the selection function updateLine(n) {return n <= Math.min(to.line, to.line + lendiff) ? n : n + lendiff;} setSelection(clipPos(selFrom), clipPos(selTo), updateLine(sel.from.line), updateLine(sel.to.line)); } function updateVerticalScroll(scrollTop) { var th = textHeight(), virtualHeight = Math.floor(doc.height * th + 2 * paddingTop()), scrollbarHeight = scroller.clientHeight; scrollbar.style.height = scrollbarHeight + "px"; if (scroller.clientHeight) scrollbarInner.style.height = virtualHeight + "px"; // Position the mover div to align with the current virtual scroll position if (scrollTop != null) scrollbar.scrollTop = scrollTop; mover.style.top = (displayOffset * th - scrollbar.scrollTop) + "px"; scrollbar.style.display = (virtualHeight > scrollbarHeight) ? "block" : "none"; } // On Mac OS X Lion and up, detect whether the mouse is plugged in by measuring // the width of a div with a scrollbar in it. If the width is <= 1, then // the mouse isn't plugged in and scrollbars should overlap the content. function overlapScrollbars() { var tmpSb = document.createElement('div'), tmpSbInner = document.createElement('div'); tmpSb.className = "CodeMirror-scrollbar"; tmpSb.style.cssText = "position: absolute; left: -9999px; height: 100px;"; tmpSbInner.className = "CodeMirror-scrollbar-inner"; tmpSbInner.style.height = "200px"; tmpSb.appendChild(tmpSbInner); document.body.appendChild(tmpSb); var result = (tmpSb.offsetWidth <= 1); document.body.removeChild(tmpSb); return result; } function computeMaxLength() { var maxLineLength = 0; maxLine = ""; maxLineChanged = true; doc.iter(0, doc.size, function(line) { var l = line.text; if (!line.hidden && l.length > maxLineLength) { maxLineLength = l.length; maxLine = l; } }); updateMaxLine = false; } function replaceRange(code, from, to) { from = clipPos(from); if (!to) to = from; else to = clipPos(to); code = splitLines(code); function adjustPos(pos) { if (posLess(pos, from)) return pos; if (!posLess(to, pos)) return end; var line = pos.line + code.length - (to.line - from.line) - 1; var ch = pos.ch; if (pos.line == to.line) ch += code[code.length-1].length - (to.ch - (to.line == from.line ? from.ch : 0)); return {line: line, ch: ch}; } var end; replaceRange1(code, from, to, function(end1) { end = end1; return {from: adjustPos(sel.from), to: adjustPos(sel.to)}; }); return end; } function replaceSelection(code, collapse) { replaceRange1(splitLines(code), sel.from, sel.to, function(end) { if (collapse == "end") return {from: end, to: end}; else if (collapse == "start") return {from: sel.from, to: sel.from}; else return {from: sel.from, to: end}; }); } function replaceRange1(code, from, to, computeSel) { var endch = code.length == 1 ? code[0].length + from.ch : code[code.length-1].length; var newSel = computeSel({line: from.line + code.length - 1, ch: endch}); updateLines(from, to, code, newSel.from, newSel.to); } function getRange(from, to) { var l1 = from.line, l2 = to.line; if (l1 == l2) return getLine(l1).text.slice(from.ch, to.ch); var code = [getLine(l1).text.slice(from.ch)]; doc.iter(l1 + 1, l2, function(line) { code.push(line.text); }); code.push(getLine(l2).text.slice(0, to.ch)); return code.join("\n"); } function getSelection() { return getRange(sel.from, sel.to); } var pollingFast = false; // Ensures slowPoll doesn't cancel fastPoll function slowPoll() { if (pollingFast) return; poll.set(options.pollInterval, function() { startOperation(); readInput(); if (focused) slowPoll(); endOperation(); }); } function fastPoll() { var missed = false; pollingFast = true; function p() { startOperation(); var changed = readInput(); if (!changed && !missed) {missed = true; poll.set(60, p);} else {pollingFast = false; slowPoll();} endOperation(); } 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.) var prevInput = ""; function readInput() { if (leaveInputAlone || !focused || hasSelection(input) || options.readOnly) return false; var text = input.value; if (text == prevInput) return false; shiftSelecting = null; var same = 0, l = Math.min(prevInput.length, text.length); while (same < l && prevInput[same] == text[same]) ++same; if (same < prevInput.length) sel.from = {line: sel.from.line, ch: sel.from.ch - (prevInput.length - same)}; else if (overwrite && posEq(sel.from, sel.to)) sel.to = {line: sel.to.line, ch: Math.min(getLine(sel.to.line).text.length, sel.to.ch + (text.length - same))}; replaceSelection(text.slice(same), "end"); if (text.length > 1000) { input.value = prevInput = ""; } else prevInput = text; return true; } function resetInput(user) { if (!posEq(sel.from, sel.to)) { prevInput = ""; input.value = getSelection(); selectInput(input); } else if (user) prevInput = input.value = ""; } function focusInput() { if (options.readOnly != "nocursor") input.focus(); } function scrollEditorIntoView() { if (!cursor.getBoundingClientRect) return; var rect = cursor.getBoundingClientRect(); // IE returns bogus coordinates when the instance sits inside of an iframe and the cursor is hidden if (ie && rect.top == rect.bottom) return; var winH = window.innerHeight || Math.max(document.body.offsetHeight, document.documentElement.offsetHeight); if (rect.top < 0 || rect.bottom > winH) scrollCursorIntoView(); } function scrollCursorIntoView() { var coords = calculateCursorCoords(); return scrollIntoView(coords.x, coords.y, coords.x, coords.yBot); } function calculateCursorCoords() { var cursor = localCoords(sel.inverted ? sel.from : sel.to); var x = options.lineWrapping ? Math.min(cursor.x, lineSpace.offsetWidth) : cursor.x; return {x: x, y: cursor.y, yBot: cursor.yBot}; } function scrollIntoView(x1, y1, x2, y2) { var scrollPos = calculateScrollPos(x1, y1, x2, y2), scrolled = false; if (scrollPos.scrollLeft != null) {scroller.scrollLeft = scrollPos.scrollLeft; scrolled = true;} if (scrollPos.scrollTop != null) {scrollbar.scrollTop = scrollPos.scrollTop; scrolled = true;} if (scrolled && options.onScroll) options.onScroll(instance); } function calculateScrollPos(x1, y1, x2, y2) { var pl = paddingLeft(), pt = paddingTop(); y1 += pt; y2 += pt; x1 += pl; x2 += pl; var screen = scroller.clientHeight, screentop = scrollbar.scrollTop, result = {}; var atTop = y1 < paddingTop() + 10; if (y1 < screentop) result.scrollTop = atTop ? 0 : Math.max(0, y1); else if (y2 > screentop + screen) result.scrollTop = y2 - screen; var screenw = scroller.clientWidth, screenleft = scroller.scrollLeft; var gutterw = options.fixedGutter ? gutter.clientWidth : 0; var atLeft = x1 < gutterw + pl + 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 visibleLines(scrollTop) { var lh = textHeight(), top = (scrollTop != null ? scrollTop : scrollbar.scrollTop) - paddingTop(); var fromHeight = Math.max(0, Math.floor(top / lh)); var toHeight = Math.ceil((top + scroller.clientHeight) / lh); return {from: lineAtHeight(doc, fromHeight), to: lineAtHeight(doc, toHeight)}; } // Uses a set of changes plus the current scroll position to // determine which DOM updates have to be made, and makes the // updates. function updateDisplay(changes, suppressCallback, scrollTop) { if (!scroller.clientWidth) { showingFrom = showingTo = displayOffset = 0; return; } // Compute the new visible window // If scrollTop is specified, use that to determine which lines // to render instead of the current scrollbar position. var visible = visibleLines(scrollTop); // Bail out if the visible area is already rendered and nothing changed. if (changes !== true && changes.length == 0 && visible.from > showingFrom && visible.to < showingTo) { updateVerticalScroll(scrollTop); return; } var from = Math.max(visible.from - 100, 0), to = Math.min(doc.size, visible.to + 100); if (showingFrom < from && from - showingFrom < 20) from = showingFrom; if (showingTo > to && showingTo - to < 20) to = Math.min(doc.size, showingTo); // Create a range of theoretically intact lines, and punch holes // in that using the change info. var intact = changes === true ? [] : computeIntact([{from: showingFrom, to: showingTo, domStart: 0}], changes); // 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.domStart += (from - range.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 (intactLines == to - from && from == showingFrom && to == showingTo) { updateVerticalScroll(scrollTop); return; } intact.sort(function(a, b) {return a.domStart - b.domStart;}); var th = textHeight(), gutterDisplay = gutter.style.display; lineDiv.style.display = "none"; patchDisplay(from, to, intact); lineDiv.style.display = gutter.style.display = ""; var different = from != showingFrom || to != showingTo || lastSizeC != scroller.clientHeight + th; // This is just a bogus formula that detects when the editor is // resized or the font size changes. if (different) lastSizeC = scroller.clientHeight + th; showingFrom = from; showingTo = to; displayOffset = heightAtLine(doc, from); // Since this is all rather error prone, it is honoured with the // only assertion in the whole file. if (lineDiv.childNodes.length != showingTo - showingFrom) throw new Error("BAD PATCH! " + JSON.stringify(intact) + " size=" + (showingTo - showingFrom) + " nodes=" + lineDiv.childNodes.length); function checkHeights() { var curNode = lineDiv.firstChild, heightChanged = false; doc.iter(showingFrom, showingTo, function(line) { if (!line.hidden) { var height = Math.round(curNode.offsetHeight / th) || 1; if (line.height != height) { updateLineHeight(line, height); gutterDirty = heightChanged = true; } } curNode = curNode.nextSibling; }); return heightChanged; } if (options.lineWrapping) { // Guess whether we're going to need the scrollbar, so that we don't end up changing the linewrapping // after the scrollbar appears (during updateVerticalScroll()). Only do this if the scrollbar is // appearing (if it's disappearing, we don't have to worry about the scroll position, and there are // issues on IE7 if we turn it off too early). var virtualHeight = Math.floor(doc.height * th + 2 * paddingTop()), scrollbarHeight = scroller.clientHeight; if (virtualHeight > scrollbarHeight) scrollbar.style.display = "block"; checkHeights(); } gutter.style.display = gutterDisplay; if (different || gutterDirty) { // If the gutter grew in size, re-check heights. If those changed, re-draw gutter. updateGutter() && options.lineWrapping && checkHeights() && updateGutter(); } updateSelection(); updateVerticalScroll(scrollTop); if (!suppressCallback && options.onUpdate) options.onUpdate(instance); return true; } 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, domStart: range.domStart}); 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, domStart: range.domStart}); if (change.to < range.to) intact2.push({from: change.to + diff, to: range.to + diff, domStart: range.domStart + (change.to - range.from)}); } } intact = intact2; } return intact; } function patchDisplay(from, to, intact) { // The first pass removes the DOM nodes that aren't intact. if (!intact.length) lineDiv.innerHTML = ""; else { function killNode(node) { var tmp = node.nextSibling; node.parentNode.removeChild(node); return tmp; } var domPos = 0, curNode = lineDiv.firstChild, n; for (var i = 0; i < intact.length; ++i) { var cur = intact[i]; while (cur.domStart > domPos) {curNode = killNode(curNode); domPos++;} for (var j = 0, e = cur.to - cur.from; j < e; ++j) {curNode = curNode.nextSibling; domPos++;} } while (curNode) curNode = killNode(curNode); } // This pass fills in the lines that actually changed. var nextIntact = intact.shift(), curNode = lineDiv.firstChild, j = from; var scratch = document.createElement("div"); doc.iter(from, to, function(line) { if (nextIntact && nextIntact.to == j) nextIntact = intact.shift(); if (!nextIntact || nextIntact.from > j) { if (line.hidden) var html = scratch.innerHTML = "<pre></pre>"; else { var html = '<pre' + (line.className ? ' class="' + line.className + '"' : '') + '>' + line.getHTML(makeTab) + '</pre>'; // Kludge to make sure the styled element lies behind the selection (by z-index) if (line.bgClassName) html = '<div style="position: relative"><pre class="' + line.bgClassName + '" style="position: absolute; left: 0; right: 0; top: 0; bottom: 0; z-index: -2"> </pre>' + html + "</div>"; } scratch.innerHTML = html; lineDiv.insertBefore(scratch.firstChild, curNode); } else { curNode = curNode.nextSibling; } ++j; }); } function updateGutter() { if (!options.gutter && !options.lineNumbers) return; var hText = mover.offsetHeight, hEditor = scroller.clientHeight; gutter.style.height = (hText - hEditor < 2 ? hEditor : hText) + "px"; var html = [], i = showingFrom, normalNode; doc.iter(showingFrom, Math.max(showingTo, showingFrom + 1), function(line) { if (line.hidden) { html.push("<pre></pre>"); } else { var marker = line.gutterMarker; var text = options.lineNumbers ? i + options.firstLineNumber : null; if (marker && marker.text) text = marker.text.replace("%N%", text != null ? text : ""); else if (text == null) text = "\u00a0"; html.push((marker && marker.style ? '<pre class="' + marker.style + '">' : "<pre>"), text); for (var j = 1; j < line.height; ++j) html.push("<br/> "); html.push("</pre>"); if (!marker) normalNode = i; } ++i; }); gutter.style.display = "none"; gutterText.innerHTML = html.join(""); // Make sure scrolling doesn't cause number gutter size to pop if (normalNode != null && options.lineNumbers) { var node = gutterText.childNodes[normalNode - showingFrom]; var minwidth = String(doc.size).length, val = eltText(node.firstChild), pad = ""; while (val.length + pad.length < minwidth) pad += "\u00a0"; if (pad) node.insertBefore(document.createTextNode(pad), node.firstChild); } gutter.style.display = ""; var resized = Math.abs((parseInt(lineSpace.style.marginLeft) || 0) - gutter.offsetWidth) > 2; lineSpace.style.marginLeft = gutter.offsetWidth + "px"; gutterDirty = false; return resized; } function updateSelection() { var collapsed = posEq(sel.from, sel.to); var fromPos = localCoords(sel.from, true); var toPos = collapsed ? fromPos : localCoords(sel.to, true); var headPos = sel.inverted ? fromPos : toPos, th = textHeight(); var wrapOff = eltOffset(wrapper), lineOff = eltOffset(lineDiv); inputDiv.style.top = Math.max(0, Math.min(scroller.offsetHeight, headPos.y + lineOff.top - wrapOff.top)) + "px"; inputDiv.style.left = Math.max(0, Math.min(scroller.offsetWidth, headPos.x + lineOff.left - wrapOff.left)) + "px"; if (collapsed) { cursor.style.top = headPos.y + "px"; cursor.style.left = (options.lineWrapping ? Math.min(headPos.x, lineSpace.offsetWidth) : headPos.x) + "px"; cursor.style.display = ""; selectionDiv.style.display = "none"; } else { var sameLine = fromPos.y == toPos.y, html = ""; var clientWidth = lineSpace.clientWidth || lineSpace.offsetWidth; var clientHeight = lineSpace.clientHeight || lineSpace.offsetHeight; function add(left, top, right, height) { var rstyle = quirksMode ? "width: " + (!right ? clientWidth : clientWidth - right - left) + "px" : "right: " + right + "px"; html += '<div class="CodeMirror-selected" style="position: absolute; left: ' + left + 'px; top: ' + top + 'px; ' + rstyle + '; height: ' + height + 'px"></div>'; } if (sel.from.ch && fromPos.y >= 0) { var right = sameLine ? clientWidth - toPos.x : 0; add(fromPos.x, fromPos.y, right, th); } var middleStart = Math.max(0, fromPos.y + (sel.from.ch ? th : 0)); var middleHeight = Math.min(toPos.y, clientHeight) - middleStart; if (middleHeight > 0.2 * th) add(0, middleStart, 0, middleHeight); if ((!sameLine || !sel.from.ch) && toPos.y < clientHeight - .5 * th) add(0, toPos.y, clientWidth - toPos.x, th); selectionDiv.innerHTML = html; cursor.style.display = "none"; selectionDiv.style.display = ""; } } function setShift(val) { if (val) shiftSelecting = shiftSelecting || (sel.inverted ? sel.to : sel.from); else shiftSelecting = null; } function setSelectionUser(from, to) { var sh = shiftSelecting && clipPos(shiftSelecting); if (sh) { if (posLess(sh, from)) from = sh; else if (posLess(to, sh)) to = sh; } setSelection(from, to); userSelChange = true; } // Update the selection. Last two args are only used by // updateLines, since they have to be expressed in the line // numbers before the update. function setSelection(from, to, oldFrom, oldTo) { goalColumn = null; if (oldFrom == null) {oldFrom = sel.from.line; oldTo = sel.to.line;} if (posEq(sel.from, from) && posEq(sel.to, to)) return; if (posLess(to, from)) {var tmp = to; to = from; from = tmp;} // Skip over hidden lines. if (from.line != oldFrom) { var from1 = skipHidden(from, oldFrom, sel.from.ch); // If there is no non-hidden line left, force visibility on current line if (!from1) setLineHidden(from.line, false); else from = from1; } if (to.line != oldTo) to = skipHidden(to, oldTo, sel.to.ch); if (posEq(from, to)) sel.inverted = false; else if (posEq(from, sel.to)) sel.inverted = false; else if (posEq(to, sel.from)) sel.inverted = true; if (options.autoClearEmptyLines && posEq(sel.from, sel.to)) { var head = sel.inverted ? from : to; if (head.line != sel.from.line && sel.from.line < doc.size) { var oldLine = getLine(sel.from.line); if (/^\s+$/.test(oldLine.text)) setTimeout(operation(function() { if (oldLine.parent && /^\s+$/.test(oldLine.text)) { var no = lineNo(oldLine); replaceRange("", {line: no, ch: 0}, {line: no, ch: oldLine.text.length}); } }, 10)); } } sel.from = from; sel.to = to; selectionChanged = true; } function skipHidden(pos, oldLine, oldCh) { function getNonHidden(dir) { var lNo = pos.line + dir, end = dir == 1 ? doc.size : -1; while (lNo != end) { var line = getLine(lNo); if (!line.hidden) { var ch = pos.ch; if (toEnd || ch > oldCh || ch > line.text.length) ch = line.text.length; return {line: lNo, ch: ch}; } lNo += dir; } } var line = getLine(pos.line); var toEnd = pos.ch == line.text.length && pos.ch != oldCh; if (!line.hidden) return pos; if (pos.line >= oldLine) return getNonHidden(1) || getNonHidden(-1); else return getNonHidden(-1) || getNonHidden(1); } function setCursor(line, ch, user) { var pos = clipPos({line: line, ch: ch || 0}); (user ? setSelectionUser : setSelection)(pos, pos); } function clipLine(n) {return Math.max(0, Math.min(n, doc.size-1));} function clipPos(pos) { if (pos.line < 0) return {line: 0, ch: 0}; if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc.size-1).text.length}; var ch = pos.ch, linelen = getLine(pos.line).text.length; if (ch == null || ch > linelen) return {line: pos.line, ch: linelen}; else if (ch < 0) return {line: pos.line, ch: 0}; else return pos; } function findPosH(dir, unit) { var end = sel.inverted ? sel.from : sel.to, line = end.line, ch = end.ch; var lineObj = getLine(line); function findNextLine() { for (var l = line + dir, e = dir < 0 ? -1 : doc.size; l != e; l += dir) { var lo = getLine(l); if (!lo.hidden) { line = l; lineObj = lo; return true; } } } function moveOnce(boundToLine) { if (ch == (dir < 0 ? 0 : lineObj.text.length)) { if (!boundToLine && findNextLine()) ch = dir < 0 ? lineObj.text.length : 0; else return false; } else ch += dir; return true; } if (unit == "char") moveOnce(); else if (unit == "column") moveOnce(true); else if (unit == "word") { var sawWord = false; for (;;) { if (dir < 0) if (!moveOnce()) break; if (isWordChar(lineObj.text.charAt(ch))) sawWord = true; else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;} if (dir > 0) if (!moveOnce()) break; } } return {line: line, ch: ch}; } function moveH(dir, unit) { var pos = dir < 0 ? sel.from : sel.to; if (shiftSelecting || posEq(sel.from, sel.to)) pos = findPosH(dir, unit); setCursor(pos.line, pos.ch, true); } function deleteH(dir, unit) { if (!posEq(sel.from, sel.to)) replaceRange("", sel.from, sel.to); else if (dir < 0) replaceRange("", findPosH(dir, unit), sel.to); else replaceRange("", sel.from, findPosH(dir, unit)); userSelChange = true; } var goalColumn = null; function moveV(dir, unit) { var dist = 0, pos = localCoords(sel.inverted ? sel.from : sel.to, true); if (goalColumn != null) pos.x = goalColumn; if (unit == "page") dist = Math.min(scroller.clientHeight, window.innerHeight || document.documentElement.clientHeight); else if (unit == "line") dist = textHeight(); var target = coordsChar(pos.x, pos.y + dist * dir + 2); if (unit == "page") scrollbar.scrollTop += localCoords(target, true).y - pos.y; setCursor(target.line, target.ch, true); goalColumn = pos.x; } function selectWordAt(pos) { var line = getLine(pos.line).text; var start = pos.ch, end = pos.ch; while (start > 0 && isWordChar(line.charAt(start - 1))) --start; while (end < line.length && isWordChar(line.charAt(end))) ++end; setSelectionUser({line: pos.line, ch: start}, {line: pos.line, ch: end}); } function selectLine(line) { setSelectionUser({line: line, ch: 0}, clipPos({line: line + 1, ch: 0})); } function indentSelected(mode) { if (posEq(sel.from, sel.to)) return indentLine(sel.from.line, mode); var e = sel.to.line - (sel.to.ch ? 0 : 1); for (var i = sel.from.line; i <= e; ++i) indentLine(i, mode); } function indentLine(n, how) { if (!how) how = "add"; if (how == "smart") { if (!mode.indent) how = "prev"; else var state = getStateBefore(n); } var line = getLine(n), curSpace = line.indentation(options.tabSize), curSpaceString = line.text.match(/^\s*/)[0], indentation; if (how == "smart") { indentation = mode.indent(state, line.text.slice(curSpaceString.length), line.text); if (indentation == Pass) how = "prev"; } if (how == "prev") { if (n) indentation = getLine(n-1).indentation(options.tabSize); else indentation = 0; } else if (how == "add") indentation = curSpace + options.indentUnit; else if (how == "subtract") indentation = curSpace - options.indentUnit; indentation = Math.max(0, indentation); var diff = indentation - curSpace; if (!diff) { if (sel.from.line != n && sel.to.line != n) return; var indentString = curSpaceString; } else { var indentString = "", pos = 0; if (options.indentWithTabs) for (var i = Math.floor(indentation / options.tabSize); i; --i) {pos += options.tabSize; indentString += "\t";} while (pos < indentation) {++pos; indentString += " ";} } replaceRange(indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length}); } function loadMode() { mode = CodeMirror.getMode(options, options.mode); doc.iter(0, doc.size, function(line) { line.stateAfter = null; }); work = [0]; startWorker(); } function gutterChanged() { var visible = options.gutter || options.lineNumbers; gutter.style.display = visible ? "" : "none"; if (visible) gutterDirty = true; else lineDiv.parentNode.style.marginLeft = 0; } function wrappingChanged(from, to) { if (options.lineWrapping) { wrapper.className += " CodeMirror-wrap"; var perLine = scroller.clientWidth / charWidth() - 3; doc.iter(0, doc.size, function(line) { if (line.hidden) return; var guess = Math.ceil(line.text.length / perLine) || 1; if (guess != 1) updateLineHeight(line, guess); }); lineSpace.style.width = code.style.width = ""; widthForcer.style.left = ""; } else { wrapper.className = wrapper.className.replace(" CodeMirror-wrap", ""); maxLine = ""; maxLineChanged = true; doc.iter(0, doc.size, function(line) { if (line.height != 1 && !line.hidden) updateLineHeight(line, 1); if (line.text.length > maxLine.length) maxLine = line.text; }); } changes.push({from: 0, to: doc.size}); } function makeTab(col) { var w = options.tabSize - col % options.tabSize, cached = tabCache[w]; if (cached) return cached; for (var str = '<span class="cm-tab">', i = 0; i < w; ++i) str += " "; return (tabCache[w] = {html: str + "</span>", width: w}); } function themeChanged() { scroller.className = scroller.className.replace(/\s*cm-s-\S+/g, "") + options.theme.replace(/(^|\s)\s*/g, " cm-s-"); } function keyMapChanged() { var style = keyMap[options.keyMap].style; wrapper.className = wrapper.className.replace(/\s*cm-keymap-\S+/g, "") + (style ? " cm-keymap-" + style : ""); } function TextMarker() { this.set = []; } TextMarker.prototype.clear = operation(function() { var min = Infinity, max = -Infinity; for (var i = 0, e = this.set.length; i < e; ++i) { var line = this.set[i], mk = line.marked; if (!mk || !line.parent) continue; var lineN = lineNo(line); min = Math.min(min, lineN); max = Math.max(max, lineN); for (var j = 0; j < mk.length; ++j) if (mk[j].marker == this) mk.splice(j--, 1); } if (min != Infinity) changes.push({from: min, to: max + 1}); }); TextMarker.prototype.find = function() { var from, to; for (var i = 0, e = this.set.length; i < e; ++i) { var line = this.set[i], mk = line.marked; for (var j = 0; j < mk.length; ++j) { var mark = mk[j]; if (mark.marker == this) { if (mark.from != null || mark.to != null) { var found = lineNo(line); if (found != null) { if (mark.from != null) from = {line: found, ch: mark.from}; if (mark.to != null) to = {line: found, ch: mark.to}; } } } } } return {from: from, to: to}; }; function markText(from, to, className) { from = clipPos(from); to = clipPos(to); var tm = new TextMarker(); if (!posLess(from, to)) return tm; function add(line, from, to, className) { getLine(line).addMark(new MarkedText(from, to, className, tm)); } if (from.line == to.line) add(from.line, from.ch, to.ch, className); else { add(from.line, from.ch, null, className); for (var i = from.line + 1, e = to.line; i < e; ++i) add(i, null, null, className); add(to.line, null, to.ch, className); } changes.push({from: from.line, to: to.line + 1}); return tm; } function setBookmark(pos) { pos = clipPos(pos); var bm = new Bookmark(pos.ch); getLine(pos.line).addMark(bm); return bm; } function findMarksAt(pos) { pos = clipPos(pos); var markers = [], marked = getLine(pos.line).marked; if (!marked) return markers; for (var i = 0, e = marked.length; i < e; ++i) { var m = marked[i]; if ((m.from == null || m.from <= pos.ch) && (m.to == null || m.to >= pos.ch)) markers.push(m.marker || m); } return markers; } function addGutterMarker(line, text, className) { if (typeof line == "number") line = getLine(clipLine(line)); line.gutterMarker = {text: text, style: className}; gutterDirty = true; return line; } function removeGutterMarker(line) { if (typeof line == "number") line = getLine(clipLine(line)); line.gutterMarker = null; gutterDirty = true; } function changeLine(handle, op) { var no = handle, line = handle; if (typeof handle == "number") line = getLine(clipLine(handle)); else no = lineNo(handle); if (no == null) return null; if (op(line, no)) changes.push({from: no, to: no + 1}); else return null; return line; } function setLineClass(handle, className, bgClassName) { return changeLine(handle, function(line) { if (line.className != className || line.bgClassName != bgClassName) { line.className = className; line.bgClassName = bgClassName; return true; } }); } function setLineHidden(handle, hidden) { return changeLine(handle, function(line, no) { if (line.hidden != hidden) { line.hidden = hidden; if (!options.lineWrapping) { var l = line.text; if (hidden && l.length == maxLine.length) { updateMaxLine = true; } else if (!hidden && l.length > maxLine.length) { maxLine = l; maxWidth = null; updateMaxLine = false; } } updateLineHeight(line, hidden ? 0 : 1); var fline = sel.from.line, tline = sel.to.line; if (hidden && (fline == no || tline == no)) { var from = fline == no ? skipHidden({line: fline, ch: 0}, fline, 0) : sel.from; var to = tline == no ? skipHidden({line: tline, ch: 0}, tline, 0) : sel.to; // Can't hide the last visible line, we'd have no place to put the cursor if (!to) return; setSelection(from, to); } return (gutterDirty = true); } }); } function lineInfo(line) { if (typeof line == "number") { if (!isLine(line)) return null; var n = line; line = getLine(line); if (!line) return null; } else { var n = lineNo(line); if (n == null) return null; } var marker = line.gutterMarker; return {line: n, handle: line, text: line.text, markerText: marker && marker.text, markerClass: marker && marker.style, lineClass: line.className, bgClass: line.bgClassName}; } function stringWidth(str) { measure.innerHTML = "<pre><span>x</span></pre>"; measure.firstChild.firstChild.firstChild.nodeValue = str; return measure.firstChild.firstChild.offsetWidth || 10; } // These are used to go from pixel positions to character // positions, taking varying character widths into account. function charFromX(line, x) { if (x <= 0) return 0; var lineObj = getLine(line), text = lineObj.text; function getX(len) { return measureLine(lineObj, len).left; } var from = 0, fromX = 0, to = text.length, toX; // Guess a suitable upper bound for our search. var estimated = Math.min(to, Math.ceil(x / charWidth())); for (;;) { var estX = getX(estimated); if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2)); else {toX = estX; to = estimated; break;} } if (x > toX) return to; // Try to guess a suitable lower bound as well. estimated = Math.floor(to * 0.8); estX = getX(estimated); if (estX < x) {from = estimated; fromX = estX;} // Do a binary search between these bounds. for (;;) { if (to - from <= 1) return (toX - x > x - fromX) ? from : to; var middle = Math.ceil((from + to) / 2), middleX = getX(middle); if (middleX > x) {to = middle; toX = middleX;} else {from = middle; fromX = middleX;} } } var tempId = "CodeMirror-temp-" + Math.floor(Math.random() * 0xffffff).toString(16); function measureLine(line, ch) { if (ch == 0) return {top: 0, left: 0}; var wbr = options.lineWrapping && ch < line.text.length && spanAffectsWrapping.test(line.text.slice(ch - 1, ch + 1)); measure.innerHTML = "<pre>" + line.getHTML(makeTab, ch, tempId, wbr) + "</pre>"; var elt = document.getElementById(tempId); var top = elt.offsetTop, left = elt.offsetLeft; // Older IEs report zero offsets for spans directly after a wrap if (ie && top == 0 && left == 0) { var backup = document.createElement("span"); backup.innerHTML = "x"; elt.parentNode.insertBefore(backup, elt.nextSibling); top = backup.offsetTop; } return {top: top, left: left}; } function localCoords(pos, inLineWrap) { var x, lh = textHeight(), y = lh * (heightAtLine(doc, pos.line) - (inLineWrap ? displayOffset : 0)); if (pos.ch == 0) x = 0; else { var sp = measureLine(getLine(pos.line), pos.ch); x = sp.left; if (options.lineWrapping) y += Math.max(0, sp.top); } return {x: x, y: y, yBot: y + lh}; } // Coords must be lineSpace-local function coordsChar(x, y) { if (y < 0) y = 0; var th = textHeight(), cw = charWidth(), heightPos = displayOffset + Math.floor(y / th); var lineNo = lineAtHeight(doc, heightPos); if (lineNo >= doc.size) return {line: doc.size - 1, ch: getLine(doc.size - 1).text.length}; var lineObj = getLine(lineNo), text = lineObj.text; var tw = options.lineWrapping, innerOff = tw ? heightPos - heightAtLine(doc, lineNo) : 0; if (x <= 0 && innerOff == 0) return {line: lineNo, ch: 0}; function getX(len) { var sp = measureLine(lineObj, len); if (tw) { var off = Math.round(sp.top / th); return Math.max(0, sp.left + (off - innerOff) * scroller.clientWidth); } return sp.left; } var from = 0, fromX = 0, to = text.length, toX; // Guess a suitable upper bound for our search. var estimated = Math.min(to, Math.ceil((x + innerOff * scroller.clientWidth * .9) / cw)); for (;;) { var estX = getX(estimated); if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2)); else {toX = estX; to = estimated; break;} } if (x > toX) return {line: lineNo, ch: to}; // Try to guess a suitable lower bound as well. estimated = Math.floor(to * 0.8); estX = getX(estimated); if (estX < x) {from = estimated; fromX = estX;} // Do a binary search between these bounds. for (;;) { if (to - from <= 1) return {line: lineNo, ch: (toX - x > x - fromX) ? from : to}; var middle = Math.ceil((from + to) / 2), middleX = getX(middle); if (middleX > x) {to = middle; toX = middleX;} else {from = middle; fromX = middleX;} } } function pageCoords(pos) { var local = localCoords(pos, true), off = eltOffset(lineSpace); return {x: off.left + local.x, y: off.top + local.y, yBot: off.top + local.yBot}; } var cachedHeight, cachedHeightFor, measureText; function textHeight() { if (measureText == null) { measureText = "<pre>"; for (var i = 0; i < 49; ++i) measureText += "x<br/>"; measureText += "x</pre>"; } var offsetHeight = lineDiv.clientHeight; if (offsetHeight == cachedHeightFor) return cachedHeight; cachedHeightFor = offsetHeight; measure.innerHTML = measureText; cachedHeight = measure.firstChild.offsetHeight / 50 || 1; measure.innerHTML = ""; return cachedHeight; } var cachedWidth, cachedWidthFor = 0; function charWidth() { if (scroller.clientWidth == cachedWidthFor) return cachedWidth; cachedWidthFor = scroller.clientWidth; return (cachedWidth = stringWidth("x")); } function paddingTop() {return lineSpace.offsetTop;} function paddingLeft() {return lineSpace.offsetLeft;} function posFromMouse(e, liberal) { var offW = eltOffset(scroller, true), x, y; // Fails unpredictably on IE[67] when mouse is dragged around quickly. try { x = e.clientX; y = e.clientY; } catch (e) { return null; } // This is a mess of a heuristic to try and determine whether a // scroll-bar was clicked or not, and to return null if one was // (and !liberal). if (!liberal && (x - offW.left > scroller.clientWidth || y - offW.top > scroller.clientHeight)) return null; var offL = eltOffset(lineSpace, true); return coordsChar(x - offL.left, y - offL.top); } function onContextMenu(e) { var pos = posFromMouse(e), scrollPos = scrollbar.scrollTop; if (!pos || opera) return; // Opera is difficult. if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)) operation(setCursor)(pos.line, pos.ch); var oldCSS = input.style.cssText; inputDiv.style.position = "absolute"; input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) + "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; " + "border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);"; leaveInputAlone = true; var val = input.value = getSelection(); focusInput(); selectInput(input); function rehide() { var newVal = splitLines(input.value).join("\n"); if (newVal != val && !options.readOnly) operation(replaceSelection)(newVal, "end"); inputDiv.style.position = "relative"; input.style.cssText = oldCSS; if (ie_lt9) scrollbar.scrollTop = scrollPos; leaveInputAlone = false; resetInput(true); slowPoll(); } if (gecko) { e_stop(e); var mouseup = connect(window, "mouseup", function() { mouseup(); setTimeout(rehide, 20); }, true); } else { setTimeout(rehide, 50); } } // Cursor-blinking function restartBlink() { clearInterval(blinker); var on = true; cursor.style.visibility = ""; blinker = setInterval(function() { cursor.style.visibility = (on = !on) ? "" : "hidden"; }, 650); } var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"}; function matchBrackets(autoclear) { var head = sel.inverted ? sel.from : sel.to, line = getLine(head.line), pos = head.ch - 1; var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)]; if (!match) return; var ch = match.charAt(0), forward = match.charAt(1) == ">", d = forward ? 1 : -1, st = line.styles; for (var off = pos + 1, i = 0, e = st.length; i < e; i+=2) if ((off -= st[i].length) <= 0) {var style = st[i+1]; break;} var stack = [line.text.charAt(pos)], re = /[(){}[\]]/; function scan(line, from, to) { if (!line.text) return; var st = line.styles, pos = forward ? 0 : line.text.length - 1, cur; for (var i = forward ? 0 : st.length - 2, e = forward ? st.length : -2; i != e; i += 2*d) { var text = st[i]; if (st[i+1] != style) {pos += d * text.length; continue;} for (var j = forward ? 0 : text.length - 1, te = forward ? text.length : -1; j != te; j += d, pos+=d) { if (pos >= from && pos < to && re.test(cur = text.charAt(j))) { var match = matching[cur]; if (match.charAt(1) == ">" == forward) stack.push(cur); else if (stack.pop() != match.charAt(0)) return {pos: pos, match: false}; else if (!stack.length) return {pos: pos, match: true}; } } } } for (var i = head.line, e = forward ? Math.min(i + 100, doc.size) : Math.max(-1, i - 100); i != e; i+=d) { var line = getLine(i), first = i == head.line; var found = scan(line, first && forward ? pos + 1 : 0, first && !forward ? pos : line.text.length); if (found) break; } if (!found) found = {pos: null, match: false}; var style = found.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket"; var one = markText({line: head.line, ch: pos}, {line: head.line, ch: pos+1}, style), two = found.pos != null && markText({line: i, ch: found.pos}, {line: i, ch: found.pos + 1}, style); var clear = operation(function(){one.clear(); two && two.clear();}); if (autoclear) setTimeout(clear, 800); else bracketHighlighted = clear; } // 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(n) { var minindent, minline; for (var search = n, lim = n - 40; search > lim; --search) { if (search == 0) return 0; var line = getLine(search-1); if (line.stateAfter) return search; var indented = line.indentation(options.tabSize); if (minline == null || minindent > indented) { minline = search - 1; minindent = indented; } } return minline; } function getStateBefore(n) { var start = findStartLine(n), state = start && getLine(start-1).stateAfter; if (!state) state = startState(mode); else state = copyState(mode, state); doc.iter(start, n, function(line) { line.highlight(mode, state, options.tabSize); line.stateAfter = copyState(mode, state); }); if (start < n) changes.push({from: start, to: n}); if (n < doc.size && !getLine(n).stateAfter) work.push(n); return state; } function highlightLines(start, end) { var state = getStateBefore(start); doc.iter(start, end, function(line) { line.highlight(mode, state, options.tabSize); line.stateAfter = copyState(mode, state); }); } function highlightWorker() { var end = +new Date + options.workTime; var foundWork = work.length; while (work.length) { if (!getLine(showingFrom).stateAfter) var task = showingFrom; else var task = work.pop(); if (task >= doc.size) continue; var start = findStartLine(task), state = start && getLine(start-1).stateAfter; if (state) state = copyState(mode, state); else state = startState(mode); var unchanged = 0, compare = mode.compareStates, realChange = false, i = start, bail = false; doc.iter(i, doc.size, function(line) { var hadState = line.stateAfter; if (+new Date > end) { work.push(i); startWorker(options.workDelay); if (realChange) changes.push({from: task, to: i + 1}); return (bail = true); } var changed = line.highlight(mode, state, options.tabSize); if (changed) realChange = true; line.stateAfter = copyState(mode, state); var done = null; if (compare) { var same = hadState && compare(hadState, state); if (same != Pass) done = !!same; } if (done == null) { if (changed !== false || !hadState) unchanged = 0; else if (++unchanged > 3 && (!mode.indent || mode.indent(hadState, "") == mode.indent(state, ""))) done = true; } if (done) return true; ++i; }); if (bail) return; if (realChange) changes.push({from: task, to: i + 1}); } if (foundWork && options.onHighlightComplete) options.onHighlightComplete(instance); } function startWorker(time) { if (!work.length) return; highlight.set(time, operation(highlightWorker)); } // 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. function startOperation() { updateInput = userSelChange = textChanged = null; changes = []; selectionChanged = false; callbacks = []; } function endOperation() { if (updateMaxLine) computeMaxLength(); if (maxLineChanged && !options.lineWrapping) { widthForcer.style.left = stringWidth(maxLine) + "px"; maxLineChanged = false; } var newScrollPos, updated; if (selectionChanged) { var coords = calculateCursorCoords(); newScrollPos = calculateScrollPos(coords.x, coords.y, coords.x, coords.yBot); } if (changes.length) updated = updateDisplay(changes, true, (newScrollPos ? newScrollPos.scrollTop : null)); else { if (selectionChanged) updateSelection(); if (gutterDirty) updateGutter(); } if (newScrollPos) scrollCursorIntoView(); if (selectionChanged) {scrollEditorIntoView(); restartBlink();} if (focused && !leaveInputAlone && (updateInput === true || (updateInput !== false && selectionChanged))) resetInput(userSelChange); if (selectionChanged && options.matchBrackets) setTimeout(operation(function() { if (bracketHighlighted) {bracketHighlighted(); bracketHighlighted = null;} if (posEq(sel.from, sel.to)) matchBrackets(false); }), 20); var sc = selectionChanged, cbs = callbacks; // these can be reset by callbacks if (textChanged && options.onChange && instance) options.onChange(instance, textChanged); if (sc && options.onCursorActivity) options.onCursorActivity(instance); for (var i = 0; i < cbs.length; ++i) cbs[i](instance); if (updated && options.onUpdate) options.onUpdate(instance); } var nestedOperation = 0; function operation(f) { return function() { if (!nestedOperation++) startOperation(); try {var result = f.apply(this, arguments);} finally {if (!--nestedOperation) endOperation();} return result; }; } function compoundChange(f) { history.startCompound(); try { return f(); } finally { history.endCompound(); } } for (var ext in extensions) if (extensions.propertyIsEnumerable(ext) && !instance.propertyIsEnumerable(ext)) instance[ext] = extensions[ext]; return instance; } // (end of function CodeMirror) // The default configuration options. CodeMirror.defaults = { value: "", mode: null, theme: "default", indentUnit: 2, indentWithTabs: false, smartIndent: true, tabSize: 4, keyMap: "default", extraKeys: null, electricChars: true, autoClearEmptyLines: false, onKeyEvent: null, onDragEvent: null, lineWrapping: false, lineNumbers: false, gutter: false, fixedGutter: false, firstLineNumber: 1, readOnly: false, dragDrop: true, onChange: null, onCursorActivity: null, onGutterClick: null, onHighlightComplete: null, onUpdate: null, onFocus: null, onBlur: null, onScroll: null, matchBrackets: false, workTime: 100, workDelay: 200, pollInterval: 100, undoDepth: 40, tabindex: null, autofocus: null }; var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent); var mac = ios || /Mac/.test(navigator.platform); var win = /Win/.test(navigator.platform); // 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 (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"); return mfactory(options, spec); }; CodeMirror.listModes = function() { var list = []; for (var m in modes) if (modes.propertyIsEnumerable(m)) list.push(m); return list; }; CodeMirror.listMIMEs = function() { var list = []; for (var m in mimeModes) if (mimeModes.propertyIsEnumerable(m)) list.push({mime: m, mode: mimeModes[m]}); return list; }; var extensions = CodeMirror.extensions = {}; CodeMirror.defineExtension = function(name, func) { extensions[name] = func; }; var commands = CodeMirror.commands = { selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});}, 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, {line: from.line + 1, ch: 0}); else cm.replaceRange("", from, sel ? to : {line: from.line}); }, deleteLine: function(cm) {var l = cm.getCursor().line; cm.replaceRange("", {line: l, ch: 0}, {line: l});}, undo: function(cm) {cm.undo();}, redo: function(cm) {cm.redo();}, goDocStart: function(cm) {cm.setCursor(0, 0, true);}, goDocEnd: function(cm) {cm.setSelection({line: cm.lineCount() - 1}, null, true);}, goLineStart: function(cm) {cm.setCursor(cm.getCursor().line, 0, true);}, goLineStartSmart: function(cm) { var cur = cm.getCursor(); var text = cm.getLine(cur.line), firstNonWS = Math.max(0, text.search(/\S/)); cm.setCursor(cur.line, cur.ch <= firstNonWS && cur.ch ? 0 : firstNonWS, true); }, goLineEnd: function(cm) {cm.setSelection({line: cm.getCursor().line}, null, true);}, 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");}, goWordRight: function(cm) {cm.moveH(1, "word");}, delCharLeft: function(cm) {cm.deleteH(-1, "char");}, delCharRight: function(cm) {cm.deleteH(1, "char");}, delWordLeft: function(cm) {cm.deleteH(-1, "word");}, delWordRight: function(cm) {cm.deleteH(1, "word");}, 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");}, defaultTab: function(cm) { if (cm.somethingSelected()) cm.indentSelection("add"); else cm.replaceSelection("\t", "end"); }, 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), {line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1}); }, newlineAndIndent: function(cm) { cm.replaceSelection("\n", "end"); cm.indentLine(cm.getCursor().line); }, toggleOverwrite: function(cm) {cm.toggleOverwrite();} }; var keyMap = CodeMirror.keyMap = {}; keyMap.basic = { "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", "Delete": "delCharRight", "Backspace": "delCharLeft", "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": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", "Ctrl-Backspace": "delWordLeft", "Ctrl-Delete": "delWordRight", "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": "goWordLeft", "Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordLeft", "Ctrl-Alt-Backspace": "delWordRight", "Alt-Delete": "delWordRight", "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", 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": "goPageUp", "Shift-Ctrl-V": "goPageDown", "Ctrl-D": "delCharRight", "Ctrl-H": "delCharLeft", "Alt-D": "delWordRight", "Alt-Backspace": "delWordLeft", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars" }; function getKeyMap(val) { if (typeof val == "string") return keyMap[val]; else return val; } function lookupKey(name, extraMap, map, handle, stop) { function lookup(map) { map = getKeyMap(map); var found = map[name]; if (found != null && handle(found)) return true; if (map.nofallthrough) { if (stop) stop(); return true; } 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) { if (lookup(fallthrough[i])) return true; } return false; } if (extraMap && lookup(extraMap)) return true; return lookup(map); } function isModifierKey(event) { var name = keyNames[e_prop(event, "keyCode")]; return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; } CodeMirror.fromTextArea = function(textarea, options) { if (!options) options = {}; options.value = textarea.value; if (!options.tabindex && textarea.tabindex) options.tabindex = textarea.tabindex; if (options.autofocus == null && textarea.getAttribute("autofocus") != null) options.autofocus = true; function save() {textarea.value = instance.getValue();} if (textarea.form) { // Deplorable hack to make the submit method do the right thing. var rmSubmit = connect(textarea.form, "submit", save, true); if (typeof textarea.form.submit == "function") { var realSubmit = textarea.form.submit; function wrappedSubmit() { save(); textarea.form.submit = realSubmit; textarea.form.submit(); textarea.form.submit = wrappedSubmit; } textarea.form.submit = wrappedSubmit; } } textarea.style.display = "none"; var instance = CodeMirror(function(node) { textarea.parentNode.insertBefore(node, textarea.nextSibling); }, options); instance.save = save; instance.getTextArea = function() { return textarea; }; instance.toTextArea = function() { save(); textarea.parentNode.removeChild(instance.getWrapperElement()); textarea.style.display = ""; if (textarea.form) { rmSubmit(); if (typeof textarea.form.submit == "function") textarea.form.submit = realSubmit; } }; return instance; }; // 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; // 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; } StringStream.prototype = { eol: function() {return this.pos >= this.string.length;}, sol: function() {return this.pos == 0;}, peek: function() {return this.string.charAt(this.pos);}, 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() {return countColumn(this.string, this.start, this.tabSize);}, indentation: function() {return countColumn(this.string, null, this.tabSize);}, match: function(pattern, consume, caseInsensitive) { if (typeof pattern == "string") { function cased(str) {return caseInsensitive ? str.toLowerCase() : str;} if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) { if (consume !== false) this.pos += pattern.length; return true; } } else { var match = this.string.slice(this.pos).match(pattern); if (match && consume !== false) this.pos += match[0].length; return match; } }, current: function(){return this.string.slice(this.start, this.pos);} }; CodeMirror.StringStream = StringStream; function MarkedText(from, to, className, marker) { this.from = from; this.to = to; this.style = className; this.marker = marker; } MarkedText.prototype = { attach: function(line) { this.marker.set.push(line); }, detach: function(line) { var ix = indexOf(this.marker.set, line); if (ix > -1) this.marker.set.splice(ix, 1); }, split: function(pos, lenBefore) { if (this.to <= pos && this.to != null) return null; var from = this.from < pos || this.from == null ? null : this.from - pos + lenBefore; var to = this.to == null ? null : this.to - pos + lenBefore; return new MarkedText(from, to, this.style, this.marker); }, dup: function() { return new MarkedText(null, null, this.style, this.marker); }, clipTo: function(fromOpen, from, toOpen, to, diff) { if (fromOpen && to > this.from && (to < this.to || this.to == null)) this.from = null; else if (this.from != null && this.from >= from) this.from = Math.max(to, this.from) + diff; if (toOpen && (from < this.to || this.to == null) && (from > this.from || this.from == null)) this.to = null; else if (this.to != null && this.to > from) this.to = to < this.to ? this.to + diff : from; }, isDead: function() { return this.from != null && this.to != null && this.from >= this.to; }, sameSet: function(x) { return this.marker == x.marker; } }; function Bookmark(pos) { this.from = pos; this.to = pos; this.line = null; } Bookmark.prototype = { attach: function(line) { this.line = line; }, detach: function(line) { if (this.line == line) this.line = null; }, split: function(pos, lenBefore) { if (pos < this.from) { this.from = this.to = (this.from - pos) + lenBefore; return this; } }, isDead: function() { return this.from > this.to; }, clipTo: function(fromOpen, from, toOpen, to, diff) { if ((fromOpen || from < this.from) && (toOpen || to > this.to)) { this.from = 0; this.to = -1; } else if (this.from > from) { this.from = this.to = Math.max(to, this.from) + diff; } }, sameSet: function(x) { return false; }, find: function() { if (!this.line || !this.line.parent) return null; return {line: lineNo(this.line), ch: this.from}; }, clear: function() { if (this.line) { var found = indexOf(this.line.marked, this); if (found != -1) this.line.marked.splice(found, 1); this.line = null; } } }; // Line objects. These hold state related to a line, including // highlighting info (the styles array). function Line(text, styles) { this.styles = styles || [text, null]; this.text = text; this.height = 1; this.marked = this.gutterMarker = this.className = this.bgClassName = this.handlers = null; this.stateAfter = this.parent = this.hidden = null; } Line.inheritMarks = function(text, orig) { var ln = new Line(text), mk = orig && orig.marked; if (mk) { for (var i = 0; i < mk.length; ++i) { if (mk[i].to == null && mk[i].style) { var newmk = ln.marked || (ln.marked = []), mark = mk[i]; var nmark = mark.dup(); newmk.push(nmark); nmark.attach(ln); } } } return ln; } Line.prototype = { // Replace a piece of a line, keeping the styles around it intact. replace: function(from, to_, text) { var st = [], mk = this.marked, to = to_ == null ? this.text.length : to_; copyStyles(0, from, this.styles, st); if (text) st.push(text, null); copyStyles(to, this.text.length, this.styles, st); this.styles = st; this.text = this.text.slice(0, from) + text + this.text.slice(to); this.stateAfter = null; if (mk) { var diff = text.length - (to - from); for (var i = 0; i < mk.length; ++i) { var mark = mk[i]; mark.clipTo(from == null, from || 0, to_ == null, to, diff); if (mark.isDead()) {mark.detach(this); mk.splice(i--, 1);} } } }, // Split a part off a line, keeping styles and markers intact. split: function(pos, textBefore) { var st = [textBefore, null], mk = this.marked; copyStyles(pos, this.text.length, this.styles, st); var taken = new Line(textBefore + this.text.slice(pos), st); if (mk) { for (var i = 0; i < mk.length; ++i) { var mark = mk[i]; var newmark = mark.split(pos, textBefore.length); if (newmark) { if (!taken.marked) taken.marked = []; taken.marked.push(newmark); newmark.attach(taken); if (newmark == mark) mk.splice(i--, 1); } } } return taken; }, append: function(line) { var mylen = this.text.length, mk = line.marked, mymk = this.marked; this.text += line.text; copyStyles(0, line.text.length, line.styles, this.styles); if (mymk) { for (var i = 0; i < mymk.length; ++i) if (mymk[i].to == null) mymk[i].to = mylen; } if (mk && mk.length) { if (!mymk) this.marked = mymk = []; outer: for (var i = 0; i < mk.length; ++i) { var mark = mk[i]; if (!mark.from) { for (var j = 0; j < mymk.length; ++j) { var mymark = mymk[j]; if (mymark.to == mylen && mymark.sameSet(mark)) { mymark.to = mark.to == null ? null : mark.to + mylen; if (mymark.isDead()) { mymark.detach(this); mk.splice(i--, 1); } continue outer; } } } mymk.push(mark); mark.attach(this); mark.from += mylen; if (mark.to != null) mark.to += mylen; } } }, fixMarkEnds: function(other) { var mk = this.marked, omk = other.marked; if (!mk) return; for (var i = 0; i < mk.length; ++i) { var mark = mk[i], close = mark.to == null; if (close && omk) { for (var j = 0; j < omk.length; ++j) if (omk[j].sameSet(mark)) {close = false; break;} } if (close) mark.to = this.text.length; } }, fixMarkStarts: function() { var mk = this.marked; if (!mk) return; for (var i = 0; i < mk.length; ++i) if (mk[i].from == null) mk[i].from = 0; }, addMark: function(mark) { mark.attach(this); if (this.marked == null) this.marked = []; this.marked.push(mark); this.marked.sort(function(a, b){return (a.from || 0) - (b.from || 0);}); }, // Run the given mode's parser over a line, update the styles // array, which contains alternating fragments of text and CSS // classes. highlight: function(mode, state, tabSize) { var stream = new StringStream(this.text, tabSize), st = this.styles, pos = 0; var changed = false, curWord = st[0], prevWord; if (this.text == "" && mode.blankLine) mode.blankLine(state); while (!stream.eol()) { var style = mode.token(stream, state); var substr = this.text.slice(stream.start, stream.pos); stream.start = stream.pos; if (pos && st[pos-1] == style) st[pos-2] += substr; else if (substr) { if (!changed && (st[pos+1] != style || (pos && st[pos-2] != prevWord))) changed = true; st[pos++] = substr; st[pos++] = style; prevWord = curWord; curWord = st[pos]; } // Give up when line is ridiculously long if (stream.pos > 5000) { st[pos++] = this.text.slice(stream.pos); st[pos++] = null; break; } } if (st.length != pos) {st.length = pos; changed = true;} if (pos && st[pos-2] != prevWord) changed = true; // Short lines with simple highlights return null, and are // counted as changed by the driver because they are likely to // highlight the same way in various contexts. return changed || (st.length < 5 && this.text.length < 10 ? null : false); }, // Fetch the parser token for a given character. Useful for hacks // that want to inspect the mode state (say, for completion). getTokenAt: function(mode, state, ch) { var txt = this.text, stream = new StringStream(txt); while (stream.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, state: state}; }, indentation: function(tabSize) {return countColumn(this.text, null, tabSize);}, // Produces an HTML fragment for the line, taking selection, // marking, and highlighting into account. getHTML: function(makeTab, wrapAt, wrapId, wrapWBR) { var html = [], first = true, col = 0; function span_(text, style) { if (!text) return; // Work around a bug where, in some compat modes, IE ignores leading spaces if (first && ie && text.charAt(0) == " ") text = "\u00a0" + text.slice(1); first = false; if (text.indexOf("\t") == -1) { col += text.length; var escaped = htmlEscape(text); } else { var escaped = ""; for (var pos = 0;;) { var idx = text.indexOf("\t", pos); if (idx == -1) { escaped += htmlEscape(text.slice(pos)); col += text.length - pos; break; } else { col += idx - pos; var tab = makeTab(col); escaped += htmlEscape(text.slice(pos, idx)) + tab.html; col += tab.width; pos = idx + 1; } } } if (style) html.push('<span class="', style, '">', escaped, "</span>"); else html.push(escaped); } var span = span_; if (wrapAt != null) { var outPos = 0, open = "<span id=\"" + wrapId + "\">"; span = function(text, style) { var l = text.length; if (wrapAt >= outPos && wrapAt < outPos + l) { if (wrapAt > outPos) { span_(text.slice(0, wrapAt - outPos), style); // See comment at the definition of spanAffectsWrapping if (wrapWBR) html.push("<wbr>"); } html.push(open); var cut = wrapAt - outPos; span_(opera ? text.slice(cut, cut + 1) : text.slice(cut), style); html.push("</span>"); if (opera) span_(text.slice(cut + 1), style); wrapAt--; outPos += l; } else { outPos += l; span_(text, style); // Output empty wrapper when at end of line if (outPos == wrapAt && outPos == len) html.push(open + " </span>"); // Stop outputting HTML when gone sufficiently far beyond measure else if (outPos > wrapAt + 10 && /\s/.test(text)) span = function(){}; } } } var st = this.styles, allText = this.text, marked = this.marked; var len = allText.length; function styleToClass(style) { if (!style) return null; return "cm-" + style.replace(/ +/g, " cm-"); } if (!allText && wrapAt == null) { span(" "); } else if (!marked || !marked.length) { for (var i = 0, ch = 0; ch < len; i+=2) { var str = st[i], style = st[i+1], l = str.length; if (ch + l > len) str = str.slice(0, len - ch); ch += l; span(str, styleToClass(style)); } } else { var pos = 0, i = 0, text = "", style, sg = 0; var nextChange = marked[0].from || 0, marks = [], markpos = 0; function advanceMarks() { var m; while (markpos < marked.length && ((m = marked[markpos]).from == pos || m.from == null)) { if (m.style != null) marks.push(m); ++markpos; } nextChange = markpos < marked.length ? marked[markpos].from : Infinity; for (var i = 0; i < marks.length; ++i) { var to = marks[i].to || Infinity; if (to == pos) marks.splice(i--, 1); else nextChange = Math.min(to, nextChange); } } var m = 0; while (pos < len) { if (nextChange == pos) advanceMarks(); var upto = Math.min(len, nextChange); while (true) { if (text) { var end = pos + text.length; var appliedStyle = style; for (var j = 0; j < marks.length; ++j) appliedStyle = (appliedStyle ? appliedStyle + " " : "") + marks[j].style; span(end > upto ? text.slice(0, upto - pos) : text, appliedStyle); if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} pos = end; } text = st[i++]; style = styleToClass(st[i++]); } } } return html.join(""); }, cleanUp: function() { this.parent = null; if (this.marked) for (var i = 0, e = this.marked.length; i < e; ++i) this.marked[i].detach(this); } }; // Utility used by replace and split above function copyStyles(from, to, source, dest) { for (var i = 0, pos = 0, state = 0; pos < to; i+=2) { var part = source[i], end = pos + part.length; if (state == 0) { if (end > from) dest.push(part.slice(from - pos, Math.min(part.length, to - pos)), source[i+1]); if (end >= from) state = 1; } else if (state == 1) { if (end > to) dest.push(part.slice(0, to - pos), source[i+1]); else dest.push(part, source[i+1]); } pos = end; } } // Data structure that holds the sequence of lines. 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; }, remove: function(at, n, callbacks) { for (var i = at, e = at + n; i < e; ++i) { var line = this.lines[i]; this.height -= line.height; line.cleanUp(); if (line.handlers) for (var j = 0; j < line.handlers.length; ++j) callbacks.push(line.handlers[j]); } this.lines.splice(at, n); }, collapse: function(lines) { lines.splice.apply(lines, [lines.length, 0].concat(this.lines)); }, insertHeight: 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; }, remove: function(at, n, callbacks) { 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.remove(at, rm, callbacks); 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); }, insert: function(at, lines) { var height = 0; for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height; this.insertHeight(at, lines, height); }, insertHeight: 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.insertHeight(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(); }, iter: function(from, to, op) { this.iterN(from, to - from, op); }, 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; } } }; function getLineAt(chunk, n) { 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 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, e = chunk.children.length; ; ++i) { if (chunk.children[i] == cur) break; no += chunk.children[i].chunkSize(); } } return no; } function lineAtHeight(chunk, h) { var n = 0; 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(chunk, n) { var h = 0; outer: do { for (var i = 0, e = chunk.children.length; i < e; ++i) { var child = chunk.children[i], sz = child.chunkSize(); if (n < sz) { chunk = child; continue outer; } n -= sz; h += child.height; } return h; } while (!chunk.lines); for (var i = 0; i < n; ++i) h += chunk.lines[i].height; return h; } // The history object 'chunks' changes that are made close together // and at almost the same time into bigger undoable units. function History() { this.time = 0; this.done = []; this.undone = []; this.compound = 0; this.closed = false; } History.prototype = { addChange: function(start, added, old) { this.undone.length = 0; var time = +new Date, cur = this.done[this.done.length - 1], last = cur && cur[cur.length - 1]; var dtime = time - this.time; if (this.compound && cur && !this.closed) { cur.push({start: start, added: added, old: old}); } else if (dtime > 400 || !last || this.closed || last.start > start + old.length || last.start + last.added < start) { this.done.push([{start: start, added: added, old: old}]); this.closed = false; } else { var startBefore = Math.max(0, last.start - start), endAfter = Math.max(0, (start + old.length) - (last.start + last.added)); for (var i = startBefore; i > 0; --i) last.old.unshift(old[i - 1]); for (var i = endAfter; i > 0; --i) last.old.push(old[old.length - i]); if (startBefore) last.start = start; last.added += added - (old.length - startBefore - endAfter); } this.time = time; }, startCompound: function() { if (!this.compound++) this.closed = true; }, endCompound: function() { if (!--this.compound) this.closed = true; } }; 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_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) { if (e.which) return e.which; else if (e.button & 1) return 1; else if (e.button & 2) return 3; else if (e.button & 4) return 2; } // Allow 3rd-party code to override event properties by adding an override // object to an event object. function e_prop(e, prop) { var overridden = e.override && e.override.hasOwnProperty(prop); return overridden ? e.override[prop] : e[prop]; } // Event handler registration. If disconnect is true, it'll return a // function that unregisters the handler. function connect(node, type, handler, disconnect) { if (typeof node.addEventListener == "function") { node.addEventListener(type, handler, false); if (disconnect) return function() {node.removeEventListener(type, handler, false);}; } else { var wrapHandler = function(event) {handler(event || window.event);}; node.attachEvent("on" + type, wrapHandler); if (disconnect) return function() {node.detachEvent("on" + type, wrapHandler);}; } } CodeMirror.connect = connect; function Delayed() {this.id = null;} Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}}; var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; var gecko = /gecko\/\d{7}/i.test(navigator.userAgent); var ie = /MSIE \d/.test(navigator.userAgent); var ie_lt8 = /MSIE [1-7]\b/.test(navigator.userAgent); var ie_lt9 = /MSIE [1-8]\b/.test(navigator.userAgent); var quirksMode = ie && document.documentMode == 5; var webkit = /WebKit\//.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 10\D([7-9]|\d\d)\D/.test(navigator.userAgent); // 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 = document.createElement('div'); return "draggable" in div || "dragDrop" in div; }(); // Feature-detect whether newlines in textareas are converted to \r\n var lineSep = function () { var te = document.createElement("textarea"); te.value = "foo\nbar"; if (te.value.indexOf("\r") > -1) return "\r\n"; return "\n"; }(); // 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 regexps matches the // character combinations that suffer from this phenomenon on the // various browsers. var spanAffectsWrapping = /^$/; // Won't match any two-character string if (gecko) spanAffectsWrapping = /$'/; else if (safari) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/; else if (chrome) spanAffectsWrapping = /\-[^ \-\.?]|\?[^ \-\.?\]\}:;!'\"\),\/]|[\.!\"#&%\)*+,:;=>\]|\}~][\(\{\[<]|\$'/; // Counts the column offset in a string, taking tabs into account. // Used mostly to find indentation. function countColumn(string, end, tabSize) { if (end == null) { end = string.search(/[^\s\u00a0]/); if (end == -1) end = string.length; } for (var i = 0, n = 0; i < end; ++i) { if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); else ++n; } return n; } function computedStyle(elt) { if (elt.currentStyle) return elt.currentStyle; return window.getComputedStyle(elt, null); } // Find the position of an element by following the offsetParent chain. // If screen==true, it returns screen (rather than page) coordinates. function eltOffset(node, screen) { var bod = node.ownerDocument.body; var x = 0, y = 0, skipBody = false; for (var n = node; n; n = n.offsetParent) { var ol = n.offsetLeft, ot = n.offsetTop; // Firefox reports weird inverted offsets when the body has a border. if (n == bod) { x += Math.abs(ol); y += Math.abs(ot); } else { x += ol, y += ot; } if (screen && computedStyle(n).position == "fixed") skipBody = true; } var e = screen && !skipBody ? null : bod; for (var n = node.parentNode; n != e; n = n.parentNode) if (n.scrollLeft != null) { x -= n.scrollLeft; y -= n.scrollTop;} return {left: x, top: y}; } // Use the faster and saner getBoundingClientRect method when possible. if (document.documentElement.getBoundingClientRect != null) eltOffset = function(node, screen) { // Take the parts of bounding client rect that we are interested in so we are able to edit if need be, // since the returned value cannot be changed externally (they are kept in sync as the element moves within the page) try { var box = node.getBoundingClientRect(); box = { top: box.top, left: box.left }; } catch(e) { box = {top: 0, left: 0}; } if (!screen) { // Get the toplevel scroll, working around browser differences. if (window.pageYOffset == null) { var t = document.documentElement || document.body.parentNode; if (t.scrollTop == null) t = document.body; box.top += t.scrollTop; box.left += t.scrollLeft; } else { box.top += window.pageYOffset; box.left += window.pageXOffset; } } return box; }; // Get a node's text content. function eltText(node) { return node.textContent || node.innerText || node.nodeValue || ""; } function selectInput(node) { if (ios) { // Mobile Safari apparently has a bug where select() is broken. node.selectionStart = 0; node.selectionEnd = node.value.length; } else node.select(); } // Operations on {line, ch} objects. 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 {line: x.line, ch: x.ch};} var escapeElement = document.createElement("pre"); function htmlEscape(str) { escapeElement.textContent = str; return escapeElement.innerHTML; } // Recent (late 2011) Opera betas insert bogus newlines at the start // of the textContent, so we strip those. if (htmlEscape("a") == "\na") { htmlEscape = function(str) { escapeElement.textContent = str; return escapeElement.innerHTML.slice(1); }; // Some IEs don't preserve tabs through innerHTML } else if (htmlEscape("\t") != "\t") { htmlEscape = function(str) { escapeElement.innerHTML = ""; escapeElement.appendChild(document.createTextNode(str)); return escapeElement.innerHTML; }; } CodeMirror.htmlEscape = htmlEscape; // Used to position the cursor after an undo/redo by finding the // last edited character. function editEnd(from, to) { if (!to) return 0; if (!from) return to.length; for (var i = from.length, j = to.length; i >= 0 && j >= 0; --i, --j) if (from.charAt(i) != to.charAt(j)) break; return j + 1; } 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 isWordChar(ch) { return /\w/.test(ch) || ch.toUpperCase() != ch.toLowerCase(); } // 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, nl, result = []; while ((nl = string.indexOf("\n", pos)) > -1) { result.push(string.slice(pos, string.charAt(nl-1) == "\r" ? nl - 1 : nl)); pos = nl + 1; } result.push(string.slice(pos)); return result; } : function(string){return string.split(/\r?\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; }; CodeMirror.defineMode("null", function() { return {token: function(stream) {stream.skipToEnd();}}; }); CodeMirror.defineMIME("text/plain", "null"); 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; })(); return CodeMirror; })();