app/assets/javascripts/puffer/codemirror.js in puffer_pages-0.1.0 vs app/assets/javascripts/puffer/codemirror.js in puffer_pages-0.1.1

- old
+ new

@@ -1,5 +1,7 @@ +// CodeMirror version 2.2 +// // 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 @@ -14,75 +16,86 @@ options[opt] = (givenOptions && givenOptions.hasOwnProperty(opt) ? givenOptions : defaults)[opt]; var targetDocument = options["document"]; // The element in which the editor lives. var wrapper = targetDocument.createElement("div"); - wrapper.className = "CodeMirror"; + 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: 1px; height: 0px;">' + // Wraps and hides input textarea - '<textarea style="position: absolute; width: 2px;" wrap="off" ' + + '<div style="overflow: hidden; position: relative; width: 3px; height: 0px;">' + // Wraps and hides input textarea + '<textarea style="position: absolute; padding: 0; width: 1px;" wrap="off" ' + 'autocorrect="off" autocapitalize="off"></textarea></div>' + - '<div class="CodeMirror-scroll cm-s-' + options.theme + '">' + + '<div class="CodeMirror-scroll" tabindex="-1">' + '<div style="position: relative">' + // Set to the height of the text, causes scrolling - '<div style="position: absolute; height: 0; width: 0; overflow: hidden;"></div>' + '<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" draggable="true">' + + '<div class="CodeMirror-lines"><div style="position: relative">' + + '<div style="position: absolute; width: 100%; height: 0; overflow: hidden; visibility: hidden"></div>' + '<pre class="CodeMirror-cursor">&#160;</pre>' + // Absolutely positioned blinky cursor '<div></div>' + // This DIV contains 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, - measure = code.firstChild, mover = measure.nextSibling, - gutter = mover.firstChild, gutterText = gutter.firstChild, - lineSpace = gutter.nextSibling.firstChild, - cursor = lineSpace.firstChild, lineDiv = cursor.nextSibling; - if (options.tabindex != null) input.tabindex = options.tabindex; + mover = code.firstChild, gutter = mover.firstChild, gutterText = gutter.firstChild, + lineSpace = gutter.nextSibling.firstChild, measure = lineSpace.firstChild, + cursor = measure.nextSibling, lineDiv = cursor.nextSibling; + themeChanged(); + // Needed to hide big blue blinking cursor on Mobile Safari + if (/AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent)) input.style.width = "0px"; + if (!webkit) lineSpace.draggable = true; + if (options.tabindex != null) input.tabIndex = options.tabindex; if (!options.gutter && !options.lineNumbers) gutter.style.display = "none"; + // 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. lines an array of Line objects - // (see Line constructor), work an array of lines that should be - // parsed, and history the undo history (instance of History - // constructor). - var mode, lines = [new Line("")], work, history = new History(), focused; + // 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. reducedSelection is a hack - // to get around the fact that we can't create inverted - // selections. See below. - var shiftSelecting, reducedSelection, lastClick, lastDoubleClick; + // whether the user is holding shift. + var shiftSelecting, lastClick, lastDoubleClick, draggingText, overwrite = false; // Variables used by startOperation/endOperation to track what // happened during the operation. - var updateInput, changes, textChanged, selectionChanged, leaveInputAlone, gutterDirty; + var updateInput, userSelChange, changes, textChanged, selectionChanged, leaveInputAlone, + gutterDirty, callbacks; // Current visible range (may be bigger than the view window). - var showingFrom = 0, showingTo = 0, lastHeight = 0, curKeyId = null; - // editing will hold an object describing the things we put in the - // textarea, to help figure out whether something changed. + var displayOffset = 0, showingFrom = 0, showingTo = 0, lastSizeC = 0; // bracketHighlighted is used to remember that a backet has been // marked. - var editing, bracketHighlighted; + var bracketHighlighted; // Tracks the maximum line length so that the horizontal scrollbar // can be kept static when scrolling. - var maxLine = "", maxWidth; + var maxLine = "", maxWidth, tabText = computeTabText(); // 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, "dragstart", onDragStart); + 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", function() { @@ -90,29 +103,30 @@ if (options.fixedGutter) gutter.style.left = scroller.scrollLeft + "px"; if (options.onScroll) options.onScroll(instance); }); 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); connect(scroller, "dragenter", e_stop); connect(scroller, "dragover", e_stop); connect(scroller, "drop", operation(onDrop)); connect(scroller, "paste", function(){focusInput(); fastPoll();}); - connect(input, "paste", function(){fastPoll();}); - connect(input, "cut", function(){fastPoll();}); - - // IE throws unspecified error in certain cases, when + connect(input, "paste", fastPoll); + connect(input, "cut", operation(function(){replaceSelection("");})); + + // IE throws unspecified error in certain cases, when // trying to access activeElement before onload var hasFocus; try { hasFocus = (targetDocument.activeElement == input); } catch(e) { } if (hasFocus) setTimeout(onFocus, 20); else onBlur(); - function isLine(l) {return l >= 0 && l < lines.length;} + 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. @@ -121,57 +135,71 @@ setValue: operation(setValue), getSelection: getSelection, replaceSelection: operation(replaceSelection), focus: function(){focusInput(); onFocus(); fastPoll();}, setOption: function(option, value) { + var oldVal = options[option]; options[option] = value; - if (option == "lineNumbers" || option == "gutter" || option == "firstLineNumber") + if (option == "mode" || option == "indentUnit") loadMode(); + else if (option == "readOnly" && value) {onBlur(); input.blur();} + else if (option == "theme") themeChanged(); + else if (option == "lineWrapping" && oldVal != value) operation(wrappingChanged)(); + else if (option == "tabSize") operation(tabsChanged)(); + if (option == "lineNumbers" || option == "gutter" || option == "firstLineNumber" || option == "theme") operation(gutterChanged)(); - else if (option == "mode" || option == "indentUnit") loadMode(); - else if (option == "readOnly" && value == "nocursor") input.blur(); - else if (option == "theme") scroller.className = scroller.className.replace(/cm-s-\w+/, "cm-s-" + value); }, getOption: function(option) {return options[option];}, undo: operation(undo), redo: operation(redo), indentLine: operation(function(n, dir) { if (isLine(n)) indentLine(n, dir == null ? "smart" : dir ? "add" : "subtract"); }), + 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: function(pos) { + getTokenAt: operation(function(pos) { pos = clipPos(pos); - return lines[pos.line].getTokenAt(mode, getStateBefore(pos.line), pos.ch); - }, + return getLine(pos.line).getTokenAt(mode, getStateBefore(pos.line), pos.ch); + }), getStateAfter: function(line) { - line = clipLine(line == null ? lines.length - 1: line); + line = clipLine(line == null ? doc.size - 1: line); return getStateBefore(line + 1); }, cursorCoords: function(start){ if (start == null) start = sel.inverted; return pageCoords(start ? sel.from : sel.to); }, charCoords: function(pos){return pageCoords(clipPos(pos));}, coordsChar: function(coords) { var off = eltOffset(lineSpace); - var line = clipLine(Math.min(lines.length - 1, showingFrom + Math.floor((coords.y - off.top) / lineHeight()))); - return clipPos({line: line, ch: charFromX(clipLine(line), coords.x - off.left)}); + return coordsChar(coords.x - off.left, coords.y - off.top); }, - getSearchCursor: function(query, pos, caseFold) {return new SearchCursor(query, pos, caseFold);}, - markText: operation(function(a, b, c){return operation(markText(a, b, c));}), + markText: operation(markText), + setBookmark: setBookmark, 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, lines.length * lineHeight()), + 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; @@ -188,69 +216,104 @@ } if (scroll) scrollIntoView(left, top, left + node.offsetWidth, top + node.offsetHeight); }, - lineCount: function() {return lines.length;}, + 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) { - if (ch == null && typeof line.line == "number") setCursor(line.line, line.ch); - else setCursor(line, ch); + 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) {setSelection(clipPos(from), clipPos(to || from));}), - getLine: function(line) {if (isLine(line)) return lines[line].text;}, + 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: lines[line].text.length}); + 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));}, + 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() {overwrite = !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; + }, + operation: function(f){return operation(f)();}, refresh: function(){updateDisplay(true);}, 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) { - history = null; var top = {line: 0, ch: 0}; - updateLines(top, {line: lines.length - 1, ch: lines[lines.length-1].text.length}, + updateLines(top, {line: doc.size - 1, ch: getLine(doc.size-1).text.length}, splitLines(code), top, top); - history = new History(); updateInput = true; } function getValue(code) { var text = []; - for (var i = 0, l = lines.length; i < l; ++i) - text.push(lines[i].text); + doc.iter(0, doc.size, function(line) { text.push(line.text); }); return text.join("\n"); } function onMouseDown(e) { + setShift(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; - // First, see if this is a click in the gutter + // 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: @@ -261,25 +324,38 @@ // (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 > now - 400) { + if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) { e_preventDefault(e); + setTimeout(focusInput, 20); return selectLine(start.line); - } else if (lastClick > now - 400) { - lastDoubleClick = now; + } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) { + lastDoubleClick = {time: now, pos: start}; e_preventDefault(e); return selectWordAt(start); - } else { lastClick = now; } + } else { lastClick = {time: now, pos: start}; } var last = start, going; if (dragAndDrop && !posEq(sel.from, sel.to) && !posLess(start, sel.from) && !posLess(sel.to, start)) { // Let the drag handler handle this. + if (webkit) lineSpace.draggable = true; + var up = connect(targetDocument, "mouseup", operation(function(e2) { + if (webkit) lineSpace.draggable = false; + draggingText = false; + up(); + if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) { + e_preventDefault(e2); + setCursor(start.line, start.ch, true); + focusInput(); + } + }), true); + draggingText = true; return; } e_preventDefault(e); setCursor(start.line, start.ch, true); @@ -309,30 +385,51 @@ focusInput(); updateInput = true; move(); up(); }), 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) { 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) replaceRange(text.join(""), clipPos(pos), clipPos(pos)); + 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 { try { var text = e.dataTransfer.getData("Text"); - if (text) replaceRange(text, pos, pos); + if (text) { + var end = replaceRange(text, pos, pos); + var curFrom = sel.from, curTo = sel.to; + setSelectionUser(pos, end); + if (draggingText) replaceRange("", curFrom, curTo); + focusInput(); + } } catch(e){} } } function onDragStart(e) { @@ -340,85 +437,80 @@ // This will reset escapeElement htmlEscape(txt); e.dataTransfer.setDragImage(escapeElement, 0, 0); e.dataTransfer.setData("Text", txt); } + function handleKeyBinding(e) { + var name = keyNames[e.keyCode], next = keyMap[options.keyMap].auto, bound, dropShift; + if (name == null || e.altGraphKey) { + if (next) options.keyMap = next; + return null; + } + if (e.altKey) name = "Alt-" + name; + if (e.ctrlKey) name = "Ctrl-" + name; + if (e.metaKey) name = "Cmd-" + name; + if (e.shiftKey && (bound = lookupKey("Shift-" + name, options.extraKeys, options.keyMap))) { + dropShift = true; + } else { + bound = lookupKey(name, options.extraKeys, options.keyMap); + } + if (typeof bound == "string") { + if (commands.propertyIsEnumerable(bound)) bound = commands[bound]; + else bound = null; + } + if (next && (bound || !isModifierKey(e))) options.keyMap = next; + if (!bound) return false; + if (dropShift) { + var prevShift = shiftSelecting; + shiftSelecting = null; + bound(instance); + shiftSelecting = prevShift; + } else bound(instance); + e_preventDefault(e); + return true; + } + var lastStoppedKey = null; function onKeyDown(e) { if (!focused) onFocus(); - var code = e.keyCode; // IE does strange things with escape. if (ie && code == 27) { e.returnValue = false; } - // Tries to detect ctrl on non-mac, cmd on mac. - var mod = (mac ? e.metaKey : e.ctrlKey) && !e.altKey, anyMod = e.ctrlKey || e.altKey || e.metaKey; - if (code == 16 || e.shiftKey) shiftSelecting = shiftSelecting || (sel.inverted ? sel.to : sel.from); - else shiftSelecting = null; + setShift(code == 16 || e.shiftKey); // First give onKeyEvent option a chance to handle this. if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return; - - if (code == 33 || code == 34) {scrollPage(code == 34); return e_preventDefault(e);} // page up/down - if (mod && ((code == 36 || code == 35) || // ctrl-home/end - mac && (code == 38 || code == 40))) { // cmd-up/down - scrollEnd(code == 36 || code == 38); return e_preventDefault(e); + var handled = handleKeyBinding(e); + if (window.opera) { + lastStoppedKey = handled ? e.keyCode : null; + // Opera has no cut event... we try to at least catch the key combo + if (!handled && (mac ? e.metaKey : e.ctrlKey) && e.keyCode == 88) + replaceSelection(""); } - if (mod && code == 65) {selectAll(); return e_preventDefault(e);} // ctrl-a - if (!options.readOnly) { - if (!anyMod && code == 13) {return;} // enter - if (!anyMod && code == 9 && handleTab(e.shiftKey)) return e_preventDefault(e); // tab - if (mod && code == 90) {undo(); return e_preventDefault(e);} // ctrl-z - if (mod && ((e.shiftKey && code == 90) || code == 89)) {redo(); return e_preventDefault(e);} // ctrl-shift-z, ctrl-y - } - if (code == 36) { if (options.smartHome) { smartHome(); return e_preventDefault(e); } } - - // Key id to use in the movementKeys map. We also pass it to - // fastPoll in order to 'self learn'. We need this because - // reducedSelection, the hack where we collapse the selection to - // its start when it is inverted and a movement key is pressed - // (and later restore it again), shouldn't be used for - // non-movement keys. - curKeyId = (mod ? "c" : "") + (e.altKey ? "a" : "") + code; - if (sel.inverted && movementKeys[curKeyId] === true) { - var range = selRange(input); - if (range) { - reducedSelection = {anchor: range.start}; - setSelRange(input, range.start, range.start); - } - } - // Don't save the key as a movementkey unless it had a modifier - if (!mod && !e.altKey) curKeyId = null; - fastPoll(curKeyId); } - function onKeyUp(e) { - if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return; - if (reducedSelection) { - reducedSelection = null; - updateInput = true; - } - if (e.keyCode == 16) shiftSelecting = null; - } function onKeyPress(e) { + if (window.opera && e.keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;} if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return; + if (window.opera && !e.which && handleKeyBinding(e)) return; if (options.electricChars && mode.electricChars) { var ch = String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode); if (mode.electricChars.indexOf(ch) > -1) - setTimeout(operation(function() {indentLine(sel.to.line, "smart");}), 50); + setTimeout(operation(function() {indentLine(sel.to.line, "smart");}), 75); } - var code = e.keyCode; - // Re-stop tab and enter. Necessary on some browsers. - if (code == 13) {if (!options.readOnly) handleEnter(); e_preventDefault(e);} - else if (!e.ctrlKey && !e.altKey && !e.metaKey && code == 9 && options.tabMode != "default") e_preventDefault(e); - else fastPoll(curKeyId); + fastPoll(); } + function onKeyUp(e) { + if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return; + if (e.keyCode == 16) shiftSelecting = null; + } function onFocus() { - if (options.readOnly == "nocursor") return; + if (options.readOnly) return; if (!focused) { if (options.onFocus) options.onFocus(instance); focused = true; if (wrapper.className.search(/\bCodeMirror-focused\b/) == -1) wrapper.className += " CodeMirror-focused"; - if (!leaveInputAlone) prepareInput(); + if (!leaveInputAlone) resetInput(true); } slowPoll(); restartBlink(); } function onBlur() { @@ -434,78 +526,104 @@ // 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 (history) { var old = []; - for (var i = from.line, e = to.line + 1; i < e; ++i) old.push(lines[i].text); + 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) { var change = from.pop(); if (change) { var replaced = [], end = change.start + change.added; - for (var i = change.start; i < end; ++i) replaced.push(lines[i].text); + doc.iter(change.start, end, function(line) { replaced.push(line.text); }); to.push({start: change.start, added: change.old.length, old: replaced}); var pos = clipPos({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: lines[end-1].text.length}, change.old, pos, pos); + updateLinesNoUndo({line: change.start, ch: 0}, {line: end - 1, ch: getLine(end-1).text.length}, change.old, pos, pos); updateInput = true; } } function undo() {unredoHelper(history.done, history.undone);} function redo() {unredoHelper(history.undone, history.done);} function updateLinesNoUndo(from, to, newText, selFrom, selTo) { var recomputeMaxLength = false, maxLineLength = maxLine.length; - for (var i = from.line; i <= to.line; ++i) { - if (lines[i].text.length == maxLineLength) {recomputeMaxLength = true; break;} - } + if (!options.lineWrapping) + doc.iter(from.line, to.line, function(line) { + if (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 = lines[from.line], lastLine = lines[to.line]; + 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 (firstLine == lastLine) { + 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]); - var spliceargs = [from.line + 1, nlines]; - firstLine.replace(from.ch, firstLine.text.length, newText[0]); - for (var i = 1, e = newText.length - 1; i < e; ++i) spliceargs.push(new Line(newText[i])); - spliceargs.push(lastLine); - lines.splice.apply(lines, spliceargs); + 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); } - else if (newText.length == 1) { - firstLine.replace(from.ch, firstLine.text.length, newText[0] + lastLine.text.slice(to.ch)); - lines.splice(from.line + 1, nlines); - } - else { - var spliceargs = [from.line + 1, nlines - 1]; - firstLine.replace(from.ch, firstLine.text.length, newText[0]); - lastLine.replace(0, to.ch, newText[newText.length-1]); - for (var i = 1, e = newText.length - 1; i < e; ++i) spliceargs.push(new Line(newText[i])); - lines.splice.apply(lines, spliceargs); - } - - - for (var i = from.line, e = i + newText.length; i < e; ++i) { - var l = lines[i].text; - if (l.length > maxLineLength) { - maxLine = l; maxLineLength = l.length; maxWidth = null; - recomputeMaxLength = false; - } - } - if (recomputeMaxLength) { - maxLineLength = 0; maxLine = ""; maxWidth = null; - for (var i = 0, e = lines.length; i < e; ++i) { - var l = lines[i].text; + if (options.lineWrapping) { + var perLine = 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, i + newText.length, function(line) { + var l = line.text; if (l.length > maxLineLength) { - maxLineLength = l.length; maxLine = l; + maxLine = l; maxLineLength = l.length; maxWidth = null; + recomputeMaxLength = false; } + }); + if (recomputeMaxLength) { + maxLineLength = 0; maxLine = ""; maxWidth = null; + doc.iter(0, doc.size, function(line) { + var l = line.text; + if (l.length > maxLineLength) { + maxLineLength = l.length; maxLine = l; + } + }); } } // Add these lines to the work array, so that they will be // highlighted. Adjust work lines if lines were added/removed. @@ -513,28 +631,29 @@ 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); } - if (newText.length < 5) { - highlightLines(from.line, from.line + newText.length); - newWork.push(from.line + newText.length); - } else { - newWork.push(from.line); - } + 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}); - textChanged = {from: from, to: to, text: newText}; + 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(selFrom, selTo, updateLine(sel.from.line), updateLine(sel.to.line)); // Make sure the scroll-size div has the correct height. - code.style.height = (lines.length * lineHeight() + 2 * paddingTop()) + "px"; + code.style.height = (doc.height * textHeight() + 2 * paddingTop()) + "px"; } function replaceRange(code, from, to) { from = clipPos(from); if (!to) to = from; else to = clipPos(to); @@ -568,148 +687,91 @@ updateLines(from, to, code, newSel.from, newSel.to); } function getRange(from, to) { var l1 = from.line, l2 = to.line; - if (l1 == l2) return lines[l1].text.slice(from.ch, to.ch); - var code = [lines[l1].text.slice(from.ch)]; - for (var i = l1 + 1; i < l2; ++i) code.push(lines[i].text); - code.push(lines[l2].text.slice(0, to.ch)); + 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(2000, function() { + poll.set(options.pollInterval, function() { startOperation(); readInput(); if (focused) slowPoll(); endOperation(); }); } - function fastPoll(keyId) { + function fastPoll() { var missed = false; pollingFast = true; function p() { startOperation(); var changed = readInput(); - if (changed && keyId) { - if (changed == "moved" && movementKeys[keyId] == null) movementKeys[keyId] = true; - if (changed == "changed") movementKeys[keyId] = false; - } - if (!changed && !missed) {missed = true; poll.set(80, p);} + if (!changed && !missed) {missed = true; poll.set(60, p);} else {pollingFast = false; slowPoll();} endOperation(); } poll.set(20, p); } - // Inspects the textarea, compares its state (content, selection) - // to the data in the editing variable, and updates the editor - // content or cursor if something changed. + // 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) return; - var changed = false, text = input.value, sr = selRange(input); - if (!sr) return false; - var changed = editing.text != text, rs = reducedSelection; - var moved = changed || sr.start != editing.start || sr.end != (rs ? editing.start : editing.end); - if (!moved && !rs) return false; - if (changed) { - shiftSelecting = reducedSelection = null; - if (options.readOnly) {updateInput = true; return "changed";} - } - - // Compute selection start and end based on start/end offsets in textarea - function computeOffset(n, startLine) { - var pos = 0; - for (;;) { - var found = text.indexOf("\n", pos); - if (found == -1 || (text.charAt(found-1) == "\r" ? found - 1 : found) >= n) - return {line: startLine, ch: n - pos}; - ++startLine; - pos = found + 1; - } - } - var from = computeOffset(sr.start, editing.from), - to = computeOffset(sr.end, editing.from); - // Here we have to take the reducedSelection hack into account, - // so that you can, for example, press shift-up at the start of - // your selection and have the right thing happen. - if (rs) { - var head = sr.start == rs.anchor ? to : from; - var tail = shiftSelecting ? sel.to : sr.start == rs.anchor ? from : to; - if (sel.inverted = posLess(head, tail)) { from = head; to = tail; } - else { reducedSelection = null; from = tail; to = head; } - } - - // In some cases (cursor on same line as before), we don't have - // to update the textarea content at all. - if (from.line == to.line && from.line == sel.from.line && from.line == sel.to.line && !shiftSelecting) - updateInput = false; - - // Magic mess to extract precise edited range from the changed - // string. - if (changed) { - var start = 0, end = text.length, len = Math.min(end, editing.text.length); - var c, line = editing.from, nl = -1; - while (start < len && (c = text.charAt(start)) == editing.text.charAt(start)) { - ++start; - if (c == "\n") {line++; nl = start;} - } - var ch = nl > -1 ? start - nl : start, endline = editing.to - 1, edend = editing.text.length; - for (;;) { - c = editing.text.charAt(edend); - if (text.charAt(end) != c) {++end; ++edend; break;} - if (c == "\n") endline--; - if (edend <= start || end <= start) break; - --end; --edend; - } - var nl = editing.text.lastIndexOf("\n", edend - 1), endch = nl == -1 ? edend : edend - nl - 1; - updateLines({line: line, ch: ch}, {line: endline, ch: endch}, splitLines(text.slice(start, end)), from, to); - if (line != endline || from.line != line) updateInput = true; - } - else setSelection(from, to); - - editing.text = text; editing.start = sr.start; editing.end = sr.end; - return changed ? "changed" : moved ? "moved" : false; + if (leaveInputAlone || !focused || hasSelection(input)) 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"); + prevInput = text; + return true; } - - // Set the textarea content and selection range to match the - // editor state. - function prepareInput() { - var text = []; - var from = Math.max(0, sel.from.line - 1), to = Math.min(lines.length, sel.to.line + 2); - for (var i = from; i < to; ++i) text.push(lines[i].text); - text = input.value = text.join(lineSep); - var startch = sel.from.ch, endch = sel.to.ch; - for (var i = from; i < sel.from.line; ++i) - startch += lineSep.length + lines[i].text.length; - for (var i = from; i < sel.to.line; ++i) - endch += lineSep.length + lines[i].text.length; - editing = {text: text, from: from, to: to, start: startch, end: endch}; - setSelRange(input, startch, reducedSelection ? startch : endch); + function resetInput(user) { + if (!posEq(sel.from, sel.to)) { + prevInput = ""; + input.value = getSelection(); + input.select(); + } else if (user) prevInput = input.value = ""; } + function focusInput() { - if (options.readOnly != "nocursor") input.focus(); + if (!options.readOnly) input.focus(); } function scrollEditorIntoView() { if (!cursor.getBoundingClientRect) return; var rect = cursor.getBoundingClientRect(); - var winH = window.innerHeight || document.body.offsetHeight || document.documentElement.offsetHeight; + // 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) cursor.scrollIntoView(); } function scrollCursorIntoView() { var cursor = localCoords(sel.inverted ? sel.from : sel.to); - return scrollIntoView(cursor.x, cursor.y, cursor.x, cursor.yBot); + var x = options.lineWrapping ? Math.min(cursor.x, lineSpace.offsetWidth) : cursor.x; + return scrollIntoView(x, cursor.y, x, cursor.yBot); } function scrollIntoView(x1, y1, x2, y2) { - var pl = paddingLeft(), pt = paddingTop(), lh = lineHeight(); + var pl = paddingLeft(), pt = paddingTop(), lh = textHeight(); y1 += pt; y2 += pt; x1 += pl; x2 += pl; var screen = scroller.clientHeight, screentop = scroller.scrollTop, scrolled = false, result = true; if (y1 < screentop) {scroller.scrollTop = Math.max(0, y1 - 2*lh); scrolled = true;} else if (y2 > screentop + screen) {scroller.scrollTop = y2 + lh - screen; scrolled = true;} @@ -718,238 +780,250 @@ if (x1 < screenleft + gutterw) { if (x1 < 50) x1 = 0; scroller.scrollLeft = Math.max(0, x1 - 10 - gutterw); scrolled = true; } - else if (x2 > screenw + screenleft) { + else if (x2 > screenw + screenleft - 3) { scroller.scrollLeft = x2 + 10 - screenw; scrolled = true; if (x2 > code.clientWidth) result = false; } if (scrolled && options.onScroll) options.onScroll(instance); return result; } function visibleLines() { - var lh = lineHeight(), top = scroller.scrollTop - paddingTop(); - return {from: Math.min(lines.length, Math.max(0, Math.floor(top / lh))), - to: Math.min(lines.length, Math.ceil((top + scroller.clientHeight) / lh))}; + var lh = textHeight(), top = scroller.scrollTop - paddingTop(); + var from_height = Math.max(0, Math.floor(top / lh)); + var to_height = Math.ceil((top + scroller.clientHeight) / lh); + return {from: lineAtHeight(doc, from_height), + to: lineAtHeight(doc, to_height)}; } // 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) { + function updateDisplay(changes, suppressCallback) { if (!scroller.clientWidth) { - showingFrom = showingTo = 0; + showingFrom = showingTo = displayOffset = 0; return; } - // First create a range of theoretically intact lines, and punch - // holes in that using the change info. - var intact = changes === true ? [] : [{from: showingFrom, to: showingTo, domStart: 0}]; - 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) - intact2.push({from: range.from + diff, to: range.to + diff, domStart: range.domStart}); - else if (range.to <= change.from) - 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; - } - - // Then, determine which lines we'd want to see, and which - // updates have to be made to get there. + // Compute the new visible window var visible = visibleLines(); - var from = Math.min(showingFrom, Math.max(visible.from - 3, 0)), - to = Math.min(lines.length, Math.max(showingTo, visible.to + 3)), - updates = [], domPos = 0, domEnd = showingTo - showingFrom, pos = from, changedLines = 0; + // Bail out if the visible area is already rendered and nothing changed. + if (changes !== true && changes.length == 0 && visible.from >= showingFrom && visible.to <= showingTo) 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); - for (var i = 0, l = intact.length; i < l; ++i) { + // 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.to <= from) continue; - if (range.from >= to) break; - if (range.domStart > domPos || range.from > pos) { - updates.push({from: pos, to: range.from, domSize: range.domStart - domPos, domStart: domPos}); - changedLines += range.from - pos; - } - pos = range.to; - domPos = range.domStart + (range.to - range.from); + 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 (domPos != domEnd || pos != to) { - changedLines += Math.abs(to - pos); - updates.push({from: pos, to: to, domSize: domEnd - domPos, domStart: domPos}); - if (to - pos != domEnd - domPos) gutterDirty = true; - } + if (intactLines == to - from) return; + intact.sort(function(a, b) {return a.domStart - b.domStart;}); - if (!updates.length) return; - lineDiv.style.display = "none"; - // If more than 30% of the screen needs update, just do a full - // redraw (which is quicker than patching) - if (changedLines > (visible.to - visible.from) * .3) - refreshDisplay(from = Math.max(visible.from - 10, 0), to = Math.min(visible.to + 7, lines.length)); - // Otherwise, only update the stuff that needs updating. - else - patchDisplay(updates); + var th = textHeight(), gutterDisplay = gutter.style.display; + lineDiv.style.display = gutter.style.display = "none"; + patchDisplay(from, to, intact); lineDiv.style.display = ""; // Position the mover div to align with the lines it's supposed // to be showing (which will cover the visible display) - var different = from != showingFrom || to != showingTo || lastHeight != scroller.clientHeight; + 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; - mover.style.top = (from * lineHeight()) + "px"; - if (different) { - lastHeight = scroller.clientHeight; - code.style.height = (lines.length * lineHeight() + 2 * paddingTop()) + "px"; - } - if (different || gutterDirty) updateGutter(); + displayOffset = heightAtLine(doc, from); + mover.style.top = (displayOffset * th) + "px"; + code.style.height = (doc.height * th + 2 * paddingTop()) + "px"; - if (maxWidth == null) maxWidth = stringWidth(maxLine); - if (maxWidth > scroller.clientWidth) { - lineSpace.style.width = maxWidth + "px"; - // Needed to prevent odd wrapping/hiding of widgets placed in here. - code.style.width = ""; - code.style.width = scroller.scrollWidth + "px"; - } else { - lineSpace.style.width = code.style.width = ""; - } - // 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(updates) + " size=" + (showingTo - showingFrom) + + throw new Error("BAD PATCH! " + JSON.stringify(intact) + " size=" + (showingTo - showingFrom) + " nodes=" + lineDiv.childNodes.length); + + if (options.lineWrapping) { + maxWidth = scroller.clientWidth; + var curNode = lineDiv.firstChild; + 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 = true;} + } + curNode = curNode.nextSibling; + }); + } else { + if (maxWidth == null) maxWidth = stringWidth(maxLine); + if (maxWidth > scroller.clientWidth) { + lineSpace.style.width = maxWidth + "px"; + // Needed to prevent odd wrapping/hiding of widgets placed in here. + code.style.width = ""; + code.style.width = scroller.scrollWidth + "px"; + } else { + lineSpace.style.width = code.style.width = ""; + } + } + gutter.style.display = gutterDisplay; + if (different || gutterDirty) updateGutter(); updateCursor(); + if (!suppressCallback && options.onUpdate) options.onUpdate(instance); + return true; } - function refreshDisplay(from, to) { - var html = [], start = {line: from, ch: 0}, inSel = posLess(sel.from, start) && !posLess(sel.to, start); - for (var i = from; i < to; ++i) { - var ch1 = null, ch2 = null; - if (inSel) { - ch1 = 0; - if (sel.to.line == i) {inSel = false; ch2 = sel.to.ch;} + 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)}); + } } - else if (sel.from.line == i) { - if (sel.to.line == i) {ch1 = sel.from.ch; ch2 = sel.to.ch;} - else {inSel = true; ch1 = sel.from.ch;} - } - html.push(lines[i].getHTML(ch1, ch2, true)); + intact = intact2; } - lineDiv.innerHTML = html.join(""); + return intact; } - function patchDisplay(updates) { - // Slightly different algorithm for IE (badInnerHTML), since - // there .innerHTML on PRE nodes is dumb, and discards - // whitespace. - var sfrom = sel.from.line, sto = sel.to.line, off = 0, - scratch = badInnerHTML && targetDocument.createElement("div"); - for (var i = 0, e = updates.length; i < e; ++i) { - var rec = updates[i]; - var extra = (rec.to - rec.from) - rec.domSize; - var nodeAfter = lineDiv.childNodes[rec.domStart + rec.domSize + off] || null; - if (badInnerHTML) - for (var j = Math.max(-extra, rec.domSize); j > 0; --j) - lineDiv.removeChild(nodeAfter ? nodeAfter.previousSibling : lineDiv.lastChild); - else if (extra) { - for (var j = Math.max(0, extra); j > 0; --j) - lineDiv.insertBefore(targetDocument.createElement("pre"), nodeAfter); - for (var j = Math.max(0, -extra); j > 0; --j) - lineDiv.removeChild(nodeAfter ? nodeAfter.previousSibling : lineDiv.lastChild); + + 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 node = lineDiv.childNodes[rec.domStart + off], inSel = sfrom < rec.from && sto >= rec.from; - for (var j = rec.from; j < rec.to; ++j) { - var ch1 = null, ch2 = null; - if (inSel) { - ch1 = 0; - if (sto == j) {inSel = false; ch2 = sel.to.ch;} - } - else if (sfrom == j) { - if (sto == j) {ch1 = sel.from.ch; ch2 = sel.to.ch;} - else {inSel = true; ch1 = sel.from.ch;} - } - if (badInnerHTML) { - scratch.innerHTML = lines[j].getHTML(ch1, ch2, true); - lineDiv.insertBefore(scratch.firstChild, nodeAfter); - } - else { - node.innerHTML = lines[j].getHTML(ch1, ch2, false); - node.className = lines[j].className || ""; - node = node.nextSibling; - } + 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++;} } - off += extra; + while (curNode) curNode = killNode(curNode); } + // This pass fills in the lines that actually changed. + var nextIntact = intact.shift(), curNode = lineDiv.firstChild, j = from; + var sfrom = sel.from.line, sto = sel.to.line, inSel = sfrom < from && sto >= from; + var scratch = targetDocument.createElement("div"), newElt; + doc.iter(from, to, function(line) { + var ch1 = null, ch2 = null; + if (inSel) { + ch1 = 0; + if (sto == j) {inSel = false; ch2 = sel.to.ch;} + } else if (sfrom == j) { + if (sto == j) {ch1 = sel.from.ch; ch2 = sel.to.ch;} + else {inSel = true; ch1 = sel.from.ch;} + } + if (nextIntact && nextIntact.to == j) nextIntact = intact.shift(); + if (!nextIntact || nextIntact.from > j) { + if (line.hidden) scratch.innerHTML = "<pre></pre>"; + else scratch.innerHTML = line.getHTML(ch1, ch2, true, tabText); + 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 = []; - for (var i = showingFrom; i < Math.max(showingTo, showingFrom + 1); ++i) { - var marker = lines[i].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, "</pre>"); - } + var html = [], i = showingFrom; + 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/>&#160;"); + html.push("</pre>"); + } + ++i; + }); gutter.style.display = "none"; gutterText.innerHTML = html.join(""); - var minwidth = String(lines.length).length, firstNode = gutterText.firstChild, val = eltText(firstNode), pad = ""; + var minwidth = String(doc.size).length, firstNode = gutterText.firstChild, val = eltText(firstNode), pad = ""; while (val.length + pad.length < minwidth) pad += "\u00a0"; if (pad) firstNode.insertBefore(targetDocument.createTextNode(pad), firstNode.firstChild); gutter.style.display = ""; lineSpace.style.marginLeft = gutter.offsetWidth + "px"; gutterDirty = false; } function updateCursor() { - var head = sel.inverted ? sel.from : sel.to, lh = lineHeight(); - var x = charX(head.line, head.ch); - var top = head.line * lh - scroller.scrollTop; - inputDiv.style.top = Math.max(Math.min(top, scroller.offsetHeight), 0) + "px"; - inputDiv.style.left = (x - scroller.scrollLeft) + "px"; + var head = sel.inverted ? sel.from : sel.to, lh = textHeight(); + var pos = localCoords(head, true); + var wrapOff = eltOffset(wrapper), lineOff = eltOffset(lineDiv); + inputDiv.style.top = (pos.y + lineOff.top - wrapOff.top) + "px"; + inputDiv.style.left = (pos.x + lineOff.left - wrapOff.left) + "px"; if (posEq(sel.from, sel.to)) { - cursor.style.top = (head.line - showingFrom) * lh + "px"; - cursor.style.left = x + "px"; + cursor.style.top = pos.y + "px"; + cursor.style.left = (options.lineWrapping ? Math.min(pos.x, lineSpace.offsetWidth) : pos.x) + "px"; cursor.style.display = ""; } else cursor.style.display = "none"; } + 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) from = skipHidden(from, oldFrom, sel.from.ch); + 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; // Some ugly logic used to only mark the lines that actually did // see a change in selection as changed, rather than the whole // selected range. - if (oldFrom == null) {oldFrom = sel.from.line; oldTo = sel.to.line;} if (posEq(from, to)) { if (!posEq(sel.from, sel.to)) changes.push({from: oldFrom, to: oldTo + 1}); } else if (posEq(sel.from, sel.to)) { @@ -970,94 +1044,124 @@ } } 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 (ch > oldCh || ch > line.text.length) ch = line.text.length; + return {line: lNo, ch: ch}; + } + lNo += dir; + } + } + var line = getLine(pos.line); + 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, lines.length-1));} + 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 >= lines.length) return {line: lines.length-1, ch: lines[lines.length-1].text.length}; - var ch = pos.ch, linelen = lines[pos.line].text.length; + 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 scrollPage(down) { - var linesPerPage = Math.floor(scroller.clientHeight / lineHeight()), head = sel.inverted ? sel.from : sel.to; - setCursor(head.line + (Math.max(linesPerPage - 1, 1) * (down ? 1 : -1)), head.ch, true); + 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 scrollEnd(top) { - var pos = top ? {line: 0, ch: 0} : {line: lines.length - 1, ch: lines[lines.length-1].text.length}; - setSelectionUser(pos, pos); + 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 selectAll() { - var endLine = lines.length - 1; - setSelection({line: 0, ch: 0}, {line: endLine, ch: lines[endLine].text.length}); + 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 = scroller.clientHeight; + else if (unit == "line") dist = textHeight(); + var target = coordsChar(pos.x, pos.y + dist * dir + 2); + setCursor(target.line, target.ch, true); + goalColumn = pos.x; + } + function selectWordAt(pos) { - var line = lines[pos.line].text; + var line = getLine(pos.line).text; var start = pos.ch, end = pos.ch; - while (start > 0 && /\w/.test(line.charAt(start - 1))) --start; - while (end < line.length && /\w/.test(line.charAt(end))) ++end; + 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}, {line: line, ch: lines[line].text.length}); + setSelectionUser({line: line, ch: 0}, {line: line, ch: getLine(line).text.length}); } - function handleEnter() { - replaceSelection("\n", "end"); - if (options.enterMode != "flat") - indentLine(sel.from.line, options.enterMode == "keep" ? "prev" : "smart"); + 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 handleTab(shift) { - 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); - } - shiftSelecting = null; - switch (options.tabMode) { - case "default": - return false; - case "indent": - indentSelected("smart"); - break; - case "classic": - if (posEq(sel.from, sel.to)) { - if (shift) indentLine(sel.from.line, "smart"); - else replaceSelection("\t", "end"); - break; - } - case "shift": - indentSelected(shift ? "subtract" : "add"); - break; - } - return true; - } - function smartHome() { - var firstNonWS = Math.max(0, lines[sel.from.line].text.search(/\S/)); - setCursor(sel.from.line, sel.from.ch <= firstNonWS && sel.from.ch ? 0 : firstNonWS, true); - } function indentLine(n, how) { + if (!how) how = "add"; if (how == "smart") { if (!mode.indent) how = "prev"; else var state = getStateBefore(n); } - var line = lines[n], curSpace = line.indentation(), curSpaceString = line.text.match(/^\s*/)[0], indentation; + var line = getLine(n), curSpace = line.indentation(options.tabSize), + curSpaceString = line.text.match(/^\s*/)[0], indentation; if (how == "prev") { - if (n) indentation = lines[n-1].indentation(); + if (n) indentation = getLine(n-1).indentation(options.tabSize); else indentation = 0; } - else if (how == "smart") indentation = mode.indent(state, line.text.slice(curSpaceString.length)); + else if (how == "smart") indentation = mode.indent(state, line.text.slice(curSpaceString.length), line.text); 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; @@ -1066,124 +1170,195 @@ var indentString = curSpaceString; } else { var indentString = "", pos = 0; if (options.indentWithTabs) - for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} + 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); - for (var i = 0, l = lines.length; i < l; ++i) - lines[i].stateAfter = null; + 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 = ""; + } else { + wrapper.className = wrapper.className.replace(" CodeMirror-wrap", ""); + maxWidth = null; maxLine = ""; + 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 computeTabText() { + for (var str = '<span class="cm-tab">', i = 0; i < options.tabSize; ++i) str += " "; + return str + "</span>"; + } + function tabsChanged() { + tabText = computeTabText(); + updateDisplay(true); + } + function themeChanged() { + scroller.className = scroller.className.replace(/\s*cm-s-\w+/g, "") + + options.theme.replace(/(^|\s)\s*/g, " cm-s-"); + } + 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].set == this.set) 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.set == this.set) { + 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 accum = []; + var tm = new TextMarker(); function add(line, from, to, className) { - var line = lines[line], mark = line.addMark(from, to, className); - mark.line = line; - accum.push(mark); + getLine(line).addMark(new MarkedText(from, to, className, tm.set)); } 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, 0, null, className); - add(to.line, 0, to.ch, className); + add(i, null, null, className); + add(to.line, null, to.ch, className); } changes.push({from: from.line, to: to.line + 1}); - return function() { - var start, end; - for (var i = 0; i < accum.length; ++i) { - var mark = accum[i], found = indexOf(lines, mark.line); - mark.line.removeMark(mark); - if (found > -1) { - if (start == null) start = found; - end = found; - } - } - if (start != null) changes.push({from: start, to: end + 1}); - }; + return tm; } + function setBookmark(pos) { + pos = clipPos(pos); + var bm = new Bookmark(pos.ch); + getLine(pos.line).addMark(bm); + return bm; + } + function addGutterMarker(line, text, className) { - if (typeof line == "number") line = lines[clipLine(line)]; + 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 = lines[clipLine(line)]; + if (typeof line == "number") line = getLine(clipLine(line)); line.gutterMarker = null; gutterDirty = true; } - function setLineClass(line, className) { - if (typeof line == "number") { - var no = line; - line = lines[clipLine(line)]; - } - else { - var no = indexOf(lines, line); - if (no == -1) return null; - } - if (line.className != className) { - line.className = className; - changes.push({from: no, to: no + 1}); - } + + 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) { + return changeLine(handle, function(line) { + if (line.className != className) { + line.className = className; + return true; + } + }); + } + function setLineHidden(handle, hidden) { + return changeLine(handle, function(line, no) { + if (line.hidden != hidden) { + line.hidden = hidden; + updateLineHeight(line, hidden ? 0 : 1); + if (hidden && (sel.from.line == no || sel.to.line == no)) + setSelection(skipHidden(sel.from, sel.from.line, sel.from.ch), + skipHidden(sel.to, sel.to.line, sel.to.ch)); + return (gutterDirty = true); + } + }); + } function lineInfo(line) { if (typeof line == "number") { + if (!isLine(line)) return null; var n = line; - line = lines[line]; + line = getLine(line); if (!line) return null; } else { - var n = indexOf(lines, line); - if (n == -1) return null; + var n = lineNo(line); + if (n == null) return null; } var marker = line.gutterMarker; - return {line: n, text: line.text, markerText: marker && marker.text, markerClass: marker && marker.style}; + return {line: n, handle: line, text: line.text, markerText: marker && marker.text, + markerClass: marker && marker.style, lineClass: line.className}; } 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 charX(line, pos) { - if (pos == 0) return 0; - measure.innerHTML = "<pre><span>" + lines[line].getHTML(null, null, false, pos) + "</span></pre>"; - return measure.firstChild.firstChild.offsetWidth; - } function charFromX(line, x) { if (x <= 0) return 0; - var lineObj = lines[line], text = lineObj.text; + var lineObj = getLine(line), text = lineObj.text; function getX(len) { - measure.innerHTML = "<pre><span>" + lineObj.getHTML(null, null, false, len) + "</span></pre>"; + measure.innerHTML = "<pre><span>" + lineObj.getHTML(null, null, false, tabText, len) + "</span></pre>"; return measure.firstChild.firstChild.offsetWidth; } 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 / stringWidth("x"))); + 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;} } @@ -1198,25 +1373,105 @@ if (middleX > x) {to = middle; toX = middleX;} else {from = middle; fromX = middleX;} } } + var tempId = Math.floor(Math.random() * 0xffffff).toString(16); + function measureLine(line, ch) { + var extra = ""; + // Include extra text at the end to make sure the measured line is wrapped in the right way. + if (options.lineWrapping) { + var end = line.text.indexOf(" ", ch + 2); + extra = htmlEscape(line.text.slice(ch + 1, end < 0 ? line.text.length : end + (ie ? 5 : 0))); + } + measure.innerHTML = "<pre>" + line.getHTML(null, null, false, tabText, ch) + + '<span id="CodeMirror-temp-' + tempId + '">' + htmlEscape(line.text.charAt(ch) || " ") + "</span>" + + extra + "</pre>"; + var elt = document.getElementById("CodeMirror-temp-" + tempId); + var top = elt.offsetTop, left = elt.offsetLeft; + // Older IEs report zero offsets for spans directly after a wrap + if (ie && ch && 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 lh = lineHeight(), line = pos.line - (inLineWrap ? showingFrom : 0); - return {x: charX(pos.line, pos.ch), y: line * lh, yBot: (line + 1) * lh}; + 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}; } - function lineHeight() { - var nlines = lineDiv.childNodes.length; - if (nlines) return (lineDiv.offsetHeight / nlines) || 1; - measure.innerHTML = "<pre>x</pre>"; - return measure.firstChild.offsetHeight || 1; + 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; @@ -1226,12 +1481,11 @@ // 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); - var line = showingFrom + Math.floor((y - offL.top) / lineHeight()); - return clipPos({line: line, ch: charFromX(clipLine(line), x - offL.left)}); + return coordsChar(x - offL.left, y - offL.top); } function onContextMenu(e) { var pos = posFromMouse(e); if (!pos || window.opera) return; // Opera is difficult. if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)) @@ -1243,21 +1497,21 @@ "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(); - setSelRange(input, 0, input.value.length); + input.select(); function rehide() { var newVal = splitLines(input.value).join("\n"); if (newVal != val) operation(replaceSelection)(newVal, "end"); inputDiv.style.position = "relative"; input.style.cssText = oldCSS; leaveInputAlone = false; - prepareInput(); + resetInput(true); slowPoll(); } - + if (gecko) { e_stop(e); var mouseup = connect(window, "mouseup", function() { mouseup(); setTimeout(rehide, 20); @@ -1278,11 +1532,11 @@ }, 650); } var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"}; function matchBrackets(autoclear) { - var head = sel.inverted ? sel.from : sel.to, line = lines[head.line], pos = head.ch - 1; + 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;} @@ -1302,22 +1556,20 @@ else if (!stack.length) return {pos: pos, match: true}; } } } } - for (var i = head.line, e = forward ? Math.min(i + 100, lines.length) : Math.max(-1, i - 100); i != e; i+=d) { - var line = lines[i], first = i == head.line; + 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) - : function() {}; - var clear = operation(function(){one(); two();}); + 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 @@ -1327,70 +1579,73 @@ // 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 = lines[search-1]; + var line = getLine(search-1); if (line.stateAfter) return search; - var indented = line.indentation(); + 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 && lines[start-1].stateAfter; + var start = findStartLine(n), state = start && getLine(start-1).stateAfter; if (!state) state = startState(mode); else state = copyState(mode, state); - for (var i = start; i < n; ++i) { - var line = lines[i]; - line.highlight(mode, state); + doc.iter(start, n, function(line) { + line.highlight(mode, state, options.tabSize); line.stateAfter = copyState(mode, state); - } - if (n < lines.length && !lines[n].stateAfter) work.push(n); + }); + 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); - for (var i = start; i < end; ++i) { - var line = lines[i]; - line.highlight(mode, state); + 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 (!lines[showingFrom].stateAfter) var task = showingFrom; + if (!getLine(showingFrom).stateAfter) var task = showingFrom; else var task = work.pop(); - if (task >= lines.length) continue; - var start = findStartLine(task), state = start && lines[start-1].stateAfter; + 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; - for (var i = start, l = lines.length; i < l; ++i) { - var line = lines[i], hadState = line.stateAfter; + 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; + return (bail = true); } - var changed = line.highlight(mode, state); + var changed = line.highlight(mode, state, options.tabSize); if (changed) realChange = true; line.stateAfter = copyState(mode, state); if (compare) { - if (hadState && compare(hadState, state)) break; + if (hadState && compare(hadState, state)) return true; } else { if (changed !== false || !hadState) unchanged = 0; - else if (++unchanged > 3) break; + else if (++unchanged > 3 && (!mode.indent || mode.indent(hadState, "") == mode.indent(state, ""))) + return true; } - } + ++i; + }); + if (bail) return; if (realChange) changes.push({from: task, to: i + 1}); } if (foundWork && options.onHighlightComplete) options.onHighlightComplete(instance); } @@ -1402,39 +1657,40 @@ // 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 = null; changes = []; textChanged = selectionChanged = false; + updateInput = userSelChange = textChanged = null; + changes = []; selectionChanged = false; callbacks = []; } function endOperation() { - var reScroll = false; + var reScroll = false, updated; if (selectionChanged) reScroll = !scrollCursorIntoView(); - if (changes.length) updateDisplay(changes); + if (changes.length) updated = updateDisplay(changes, true); else { if (selectionChanged) updateCursor(); if (gutterDirty) updateGutter(); } if (reScroll) scrollCursorIntoView(); if (selectionChanged) {scrollEditorIntoView(); restartBlink();} - // updateInput can be set to a boolean value to force/prevent an - // update. if (focused && !leaveInputAlone && (updateInput === true || (updateInput !== false && selectionChanged))) - prepareInput(); + resetInput(userSelChange); if (selectionChanged && options.matchBrackets) setTimeout(operation(function() { if (bracketHighlighted) {bracketHighlighted(); bracketHighlighted = null;} - matchBrackets(false); + if (posEq(sel.from, sel.to)) matchBrackets(false); }), 20); - var tc = textChanged; // textChanged can be reset by cursoractivity callback + var tc = textChanged, cbs = callbacks; // these can be reset by callbacks if (selectionChanged && options.onCursorActivity) options.onCursorActivity(instance); if (tc && options.onChange && instance) options.onChange(instance, tc); + 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(); @@ -1442,124 +1698,10 @@ finally {if (!--nestedOperation) endOperation();} return result; }; } - function SearchCursor(query, pos, caseFold) { - this.atOccurrence = false; - if (caseFold == null) caseFold = typeof query == "string" && query == query.toLowerCase(); - - if (pos && typeof pos == "object") pos = clipPos(pos); - else pos = {line: 0, ch: 0}; - this.pos = {from: pos, to: pos}; - - // The matches method is filled in based on the type of query. - // It takes a position and a direction, and returns an object - // describing the next occurrence of the query, or null if no - // more matches were found. - if (typeof query != "string") // Regexp match - this.matches = function(reverse, pos) { - if (reverse) { - var line = lines[pos.line].text.slice(0, pos.ch), match = line.match(query), start = 0; - while (match) { - var ind = line.indexOf(match[0]); - start += ind; - line = line.slice(ind + 1); - var newmatch = line.match(query); - if (newmatch) match = newmatch; - else break; - start++; - } - } - else { - var line = lines[pos.line].text.slice(pos.ch), match = line.match(query), - start = match && pos.ch + line.indexOf(match[0]); - } - if (match) - return {from: {line: pos.line, ch: start}, - to: {line: pos.line, ch: start + match[0].length}, - match: match}; - }; - else { // String query - if (caseFold) query = query.toLowerCase(); - var fold = caseFold ? function(str){return str.toLowerCase();} : function(str){return str;}; - var target = query.split("\n"); - // Different methods for single-line and multi-line queries - if (target.length == 1) - this.matches = function(reverse, pos) { - var line = fold(lines[pos.line].text), len = query.length, match; - if (reverse ? (pos.ch >= len && (match = line.lastIndexOf(query, pos.ch - len)) != -1) - : (match = line.indexOf(query, pos.ch)) != -1) - return {from: {line: pos.line, ch: match}, - to: {line: pos.line, ch: match + len}}; - }; - else - this.matches = function(reverse, pos) { - var ln = pos.line, idx = (reverse ? target.length - 1 : 0), match = target[idx], line = fold(lines[ln].text); - var offsetA = (reverse ? line.indexOf(match) + match.length : line.lastIndexOf(match)); - if (reverse ? offsetA >= pos.ch || offsetA != match.length - : offsetA <= pos.ch || offsetA != line.length - match.length) - return; - for (;;) { - if (reverse ? !ln : ln == lines.length - 1) return; - line = fold(lines[ln += reverse ? -1 : 1].text); - match = target[reverse ? --idx : ++idx]; - if (idx > 0 && idx < target.length - 1) { - if (line != match) return; - else continue; - } - var offsetB = (reverse ? line.lastIndexOf(match) : line.indexOf(match) + match.length); - if (reverse ? offsetB != line.length - match.length : offsetB != match.length) - return; - var start = {line: pos.line, ch: offsetA}, end = {line: ln, ch: offsetB}; - return {from: reverse ? end : start, to: reverse ? start : end}; - } - }; - } - } - - SearchCursor.prototype = { - findNext: function() {return this.find(false);}, - findPrevious: function() {return this.find(true);}, - - find: function(reverse) { - var self = this, pos = clipPos(reverse ? this.pos.from : this.pos.to); - function savePosAndFail(line) { - var pos = {line: line, ch: 0}; - self.pos = {from: pos, to: pos}; - self.atOccurrence = false; - return false; - } - - for (;;) { - if (this.pos = this.matches(reverse, pos)) { - this.atOccurrence = true; - return this.pos.match || true; - } - if (reverse) { - if (!pos.line) return savePosAndFail(0); - pos = {line: pos.line-1, ch: lines[pos.line-1].text.length}; - } - else { - if (pos.line == lines.length - 1) return savePosAndFail(lines.length); - pos = {line: pos.line+1, ch: 0}; - } - } - }, - - from: function() {if (this.atOccurrence) return copyPos(this.pos.from);}, - to: function() {if (this.atOccurrence) return copyPos(this.pos.to);}, - - replace: function(newText) { - var self = this; - if (this.atOccurrence) - operation(function() { - self.pos.to = replaceRange(newText, self.pos.from, self.pos.to); - })(); - } - }; - for (var ext in extensions) if (extensions.propertyIsEnumerable(ext) && !instance.propertyIsEnumerable(ext)) instance[ext] = extensions[ext]; return instance; @@ -1570,33 +1712,39 @@ value: "", mode: null, theme: "default", indentUnit: 2, indentWithTabs: false, - tabMode: "classic", - enterMode: "indent", + tabSize: 4, + keyMap: "default", + extraKeys: null, electricChars: true, onKeyEvent: null, + lineWrapping: false, lineNumbers: false, gutter: false, fixedGutter: false, firstLineNumber: 1, readOnly: false, - smartHome: 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, document: window.document }; + var mac = /Mac/.test(navigator.platform); + var win = /Win/.test(navigator.platform); + // Known modes, by name and by MIME var modes = {}, mimeModes = {}; CodeMirror.defineMode = function(name, mode) { if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; modes[name] = mode; @@ -1629,15 +1777,118 @@ for (var m in mimeModes) if (mimeModes.propertyIsEnumerable(m)) list.push({mime: m, mode: mimeModes[m]}); return list; }; - var extensions = {}; + 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");}, + 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": "indentMore", "Shift-Tab": "indentLess", + "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", + 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", + 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 lookupKey(name, extraMap, map) { + function lookup(name, map, ft) { + var found = map[name]; + if (found != null) return found; + if (ft == null) ft = map.fallthrough; + if (ft == null) return map.catchall; + if (typeof ft == "string") return lookup(name, keyMap[ft]); + for (var i = 0, e = ft.length; i < e; ++i) { + found = lookup(name, keyMap[ft[i]]); + if (found != null) return found; + } + return null; + } + return extraMap ? lookup(name, extraMap, map) : lookup(name, keyMap[map]); + } + function isModifierKey(event) { + var name = keyNames[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; @@ -1661,10 +1912,11 @@ 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) { @@ -1687,20 +1939,21 @@ if (val instanceof Array) val = val.concat([]); nstate[n] = val; } return nstate; } - CodeMirror.startState = startState; + CodeMirror.copyState = copyState; function startState(mode, a1, a2) { return mode.startState ? mode.startState(a1, a2) : true; } - CodeMirror.copyState = copyState; + CodeMirror.startState = startState; // The character stream used by a mode's parser. - function StringStream(string) { + 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);}, @@ -1728,12 +1981,12 @@ 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);}, - indentation: function() {return countColumn(this.string);}, + 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; @@ -1748,63 +2001,191 @@ }, current: function(){return this.string.slice(this.start, this.pos);} }; CodeMirror.StringStream = StringStream; + function MarkedText(from, to, className, set) { + this.from = from; this.to = to; this.style = className; this.set = set; + } + MarkedText.prototype = { + attach: function(line) { this.set.push(line); }, + detach: function(line) { + var ix = indexOf(this.set, line); + if (ix > -1) this.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.set); + }, + dup: function() { return new MarkedText(null, null, this.style, this.set); }, + clipTo: function(fromOpen, from, toOpen, to, diff) { + if (this.from != null && this.from >= from) + this.from = Math.max(to, this.from) + diff; + if (this.to != null && this.to > from) + this.to = to < this.to ? this.to + diff : from; + if (fromOpen && to > this.from && (to < this.to || this.to == null)) + this.from = null; + if (toOpen && (from < this.to || this.to == null) && (from > this.from || this.from == null)) + this.to = null; + }, + isDead: function() { return this.from != null && this.to != null && this.from >= this.to; }, + sameSet: function(x) { return this.set == x.set; } + }; + + 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.stateAfter = null; this.text = text; - this.marked = this.gutterMarker = this.className = null; + this.height = 1; + this.marked = this.gutterMarker = this.className = 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; + 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), end = this.text.length; - function fix(n) {return n <= Math.min(to, to + diff) ? n : n + diff;} - for (var i = 0; i < mk.length; ++i) { - var mark = mk[i], del = false; - if (mark.from >= end) del = true; - else {mark.from = fix(mark.from); if (mark.to != null) mark.to = fix(mark.to);} - if (del || mark.from >= mark.to) {mk.splice(i, 1); i--;} + var diff = text.length - (to - from); + for (var i = 0, mark = mk[i]; i < mk.length; ++i) { + mark.clipTo(from == null, from || 0, to_ == null, to, diff); + if (mark.isDead()) {mark.detach(this); mk.splice(i--, 1);} } } }, - // Split a line in two, again keeping styles intact. + // Split a part off a line, keeping styles and markers intact. split: function(pos, textBefore) { - var st = [textBefore, null]; + var st = [textBefore, null], mk = this.marked; copyStyles(pos, this.text.length, this.styles, st); - return new Line(textBefore + this.text.slice(pos), 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); + } + } + } + return taken; }, - addMark: function(from, to, style) { - var mk = this.marked, mark = {from: from, to: to, style: style}; - if (this.marked == null) this.marked = []; - this.marked.push(mark); - this.marked.sort(function(a, b){return a.from - b.from;}); - return mark; + 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; + } + } }, - removeMark: function(mark) { + 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] == mark) {mk.splice(i, 1); break;} + 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) { - var stream = new StringStream(this.text), st = this.styles, pos = 0; + 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); @@ -1841,35 +2222,38 @@ end: stream.pos, string: stream.current(), className: style || null, state: state}; }, - indentation: function() {return countColumn(this.text);}, + 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(sfrom, sto, includePre, endAt) { - var html = []; + getHTML: function(sfrom, sto, includePre, tabText, endAt) { + var html = [], first = true; if (includePre) html.push(this.className ? '<pre class="' + this.className + '">': "<pre>"); function span(text, style) { if (!text) return; - if (style) html.push('<span class="', style, '">', htmlEscape(text), "</span>"); - else html.push(htmlEscape(text)); + // 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 (style) html.push('<span class="', style, '">', htmlEscape(text).replace(/\t/g, tabText), "</span>"); + else html.push(htmlEscape(text).replace(/\t/g, tabText)); } var st = this.styles, allText = this.text, marked = this.marked; if (sfrom == sto) sfrom = null; var len = allText.length; if (endAt != null) len = Math.min(endAt, len); if (!allText && endAt == null) span(" ", sfrom != null && sto == null ? "CodeMirror-selected" : null); else if (!marked && sfrom == null) for (var i = 0, ch = 0; ch < len; i+=2) { - var str = st[i], l = str.length; + 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, "cm-" + st[i+1]); + span(str, style && "cm-" + style); } else { var pos = 0, i = 0, text = "", style, sg = 0; var markpos = -1, mark = null; function nextMark() { @@ -1909,10 +2293,15 @@ } if (sfrom != null && sto == null) span(" ", "CodeMirror-selected"); } if (includePre) html.push("</pre>"); 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) { @@ -1927,10 +2316,197 @@ } 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.splice.apply(this.lines, [at, 0].concat(lines)); + 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)]; + } + }, + 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 = []; @@ -1976,10 +2552,14 @@ 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; @@ -1987,61 +2567,49 @@ } // Event handler registration. If disconnect is true, it'll return a // function that unregisters the handler. function connect(node, type, handler, disconnect) { - function wrapHandler(event) {handler(event || window.event);} if (typeof node.addEventListener == "function") { - node.addEventListener(type, wrapHandler, false); - if (disconnect) return function() {node.removeEventListener(type, wrapHandler, false);}; + 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);}}; - // Some IE versions don't preserve whitespace when setting the - // innerHTML of a PRE tag. - var badInnerHTML = (function() { - var pre = document.createElement("pre"); - pre.innerHTML = " "; return !pre.innerHTML; - })(); - // Detect drag-and-drop - var dragAndDrop = (function() { + var dragAndDrop = function() { // IE8 has ondragstart and ondrop properties, but doesn't seem to // actually support ondragstart the way it's supposed to work. if (/MSIE [1-8]\b/.test(navigator.userAgent)) return false; var div = document.createElement('div'); - return "ondragstart" in div && "ondrop" in div; - })(); + return "draggable" in div; + }(); var gecko = /gecko\/\d{7}/i.test(navigator.userAgent); var ie = /MSIE \d/.test(navigator.userAgent); - var safari = /Apple Computer/.test(navigator.vendor); + var webkit = /WebKit\//.test(navigator.userAgent); var lineSep = "\n"; // Feature-detect whether newlines in textareas are converted to \r\n (function () { var te = document.createElement("textarea"); te.value = "foo\nbar"; if (te.value.indexOf("\r") > -1) lineSep = "\r\n"; }()); - var tabSize = 8; - var mac = /Mac/.test(navigator.platform); - var movementKeys = {}; - for (var i = 35; i <= 40; ++i) - movementKeys[i] = movementKeys["c" + i] = true; - // Counts the column offset in a string, taking tabs into account. // Used mostly to find indentation. - function countColumn(string, end) { + 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) { @@ -2053,40 +2621,77 @@ 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 doc = node.ownerDocument.body; - var x = 0, y = 0, skipDoc = false; + var bod = node.ownerDocument.body; + var x = 0, y = 0, skipBody = false; for (var n = node; n; n = n.offsetParent) { - x += n.offsetLeft; y += n.offsetTop; + 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") - skipDoc = true; + skipBody = true; } - var e = screen && !skipDoc ? null : doc; + 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 || ""; } // 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("div"); + var escapeElement = document.createElement("pre"); function htmlEscape(str) { - escapeElement.innerText = escapeElement.textContent = 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) { @@ -2101,97 +2706,56 @@ 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, selRange, setSelRange; - if ("\n\nb".split(/\n/).length != 3) - splitLines = 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; - }; - else - splitLines = function(string){return string.split(/\r?\n/);}; + 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; - // Sane model of finding and setting the selection in a textarea - if (window.getSelection) { - selRange = function(te) { - try {return {start: te.selectionStart, end: te.selectionEnd};} - catch(e) {return null;} - }; - if (safari) - // On Safari, selection set with setSelectionRange are in a sort - // of limbo wrt their anchor. If you press shift-left in them, - // the anchor is put at the end, and the selection expanded to - // the left. If you press shift-right, the anchor ends up at the - // front. This is not what CodeMirror wants, so it does a - // spurious modify() call to get out of limbo. - setSelRange = function(te, start, end) { - if (start == end) - te.setSelectionRange(start, end); - else { - te.setSelectionRange(start, end - 1); - window.getSelection().modify("extend", "forward", "character"); - } - }; - else - setSelRange = function(te, start, end) { - try {te.setSelectionRange(start, end);} - catch(e) {} // Fails on Firefox when textarea isn't part of the document - }; - } - // IE model. Don't ask. - else { - selRange = function(te) { - try {var range = te.ownerDocument.selection.createRange();} - catch(e) {return null;} - if (!range || range.parentElement() != te) return null; - var val = te.value, len = val.length, localRange = te.createTextRange(); - localRange.moveToBookmark(range.getBookmark()); - var endRange = te.createTextRange(); - endRange.collapse(false); + 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; + }; - if (localRange.compareEndPoints("StartToEnd", endRange) > -1) - return {start: len, end: len}; - - var start = -localRange.moveStart("character", -len); - for (var i = val.indexOf("\r"); i > -1 && i < start; i = val.indexOf("\r", i+1), start++) {} - - if (localRange.compareEndPoints("EndToEnd", endRange) > -1) - return {start: start, end: len}; - - var end = -localRange.moveEnd("character", -len); - for (var i = val.indexOf("\r"); i > -1 && i < end; i = val.indexOf("\r", i+1), end++) {} - return {start: start, end: end}; - }; - setSelRange = function(te, start, end) { - var range = te.createTextRange(); - range.collapse(true); - var endrange = range.duplicate(); - var newlines = 0, txt = te.value; - for (var pos = txt.indexOf("\n"); pos > -1 && pos < start; pos = txt.indexOf("\n", pos + 1)) - ++newlines; - range.move("character", start - newlines); - for (; pos > -1 && pos < end; pos = txt.indexOf("\n", pos + 1)) - ++newlines; - endrange.move("character", end - newlines); - range.setEndPoint("EndToEnd", endrange); - range.select(); - }; - } - 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", 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; })();