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troggle/media/codemirror/codemirror.js

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JavaScript
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// All functions that need access to the editor's state live inside
// the CodeMirror function. Below that, at the bottom of the file,
// some utilities are defined.
// CodeMirror is the only global var we claim
window.CodeMirror = (function() {
"use strict";
// This is the function that produces an editor instance. Its
// closure is used to store the editor state.
function CodeMirror(place, givenOptions) {
// Determine effective options based on given values and defaults.
var options = {}, defaults = CodeMirror.defaults;
for (var opt in defaults)
if (defaults.hasOwnProperty(opt))
options[opt] = (givenOptions && givenOptions.hasOwnProperty(opt) ? givenOptions : defaults)[opt];
var input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em");
input.setAttribute("wrap", "off"); input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off");
// Wraps and hides input textarea
var inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
// The empty scrollbar content, used solely for managing the scrollbar thumb.
var scrollbarInner = elt("div", null, "CodeMirror-scrollbar-inner");
// The vertical scrollbar. Horizontal scrolling is handled by the scroller itself.
var scrollbar = elt("div", [scrollbarInner], "CodeMirror-scrollbar");
// DIVs containing the selection and the actual code
var lineDiv = elt("div"), selectionDiv = elt("div", null, null, "position: relative; z-index: -1");
// Blinky cursor, and element used to ensure cursor fits at the end of a line
var cursor = elt("pre", "\u00a0", "CodeMirror-cursor"), widthForcer = elt("pre", "\u00a0", "CodeMirror-cursor", "visibility: hidden");
// Used to measure text size
var measure = elt("div", null, null, "position: absolute; width: 100%; height: 0px; overflow: hidden; visibility: hidden;");
var lineSpace = elt("div", [measure, cursor, widthForcer, selectionDiv, lineDiv], null, "position: relative; z-index: 0");
var gutterText = elt("div", null, "CodeMirror-gutter-text"), gutter = elt("div", [gutterText], "CodeMirror-gutter");
// Moved around its parent to cover visible view
var mover = elt("div", [gutter, elt("div", [lineSpace], "CodeMirror-lines")], null, "position: relative");
// Set to the height of the text, causes scrolling
var sizer = elt("div", [mover], null, "position: relative");
// Provides scrolling
var scroller = elt("div", [sizer], "CodeMirror-scroll");
scroller.setAttribute("tabIndex", "-1");
// The element in which the editor lives.
var wrapper = elt("div", [inputDiv, scrollbar, scroller], "CodeMirror" + (options.lineWrapping ? " CodeMirror-wrap" : ""));
if (place.appendChild) place.appendChild(wrapper); else place(wrapper);
themeChanged(); keyMapChanged();
// Needed to hide big blue blinking cursor on Mobile Safari
if (ios) input.style.width = "0px";
if (!webkit) scroller.draggable = true;
lineSpace.style.outline = "none";
if (options.tabindex != null) input.tabIndex = options.tabindex;
if (options.autofocus) focusInput();
if (!options.gutter && !options.lineNumbers) gutter.style.display = "none";
// Needed to handle Tab key in KHTML
if (khtml) inputDiv.style.height = "1px", inputDiv.style.position = "absolute";
// Check for OS X >= 10.7. This has transparent scrollbars, so the
// overlaying of one scrollbar with another won't work. This is a
// temporary hack to simply turn off the overlay scrollbar. See
// issue #727.
if (mac_geLion) { scrollbar.style.zIndex = -2; scrollbar.style.visibility = "hidden"; }
// Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
else if (ie_lt8) scrollbar.style.minWidth = "18px";
// Delayed object wrap timeouts, making sure only one is active. blinker holds an interval.
var poll = new Delayed(), highlight = new Delayed(), blinker;
// mode holds a mode API object. doc is the tree of Line objects,
// frontier is the point up to which the content has been parsed,
// and history the undo history (instance of History constructor).
var mode, doc = new BranchChunk([new LeafChunk([new Line("")])]), frontier = 0, focused;
loadMode();
// The selection. These are always maintained to point at valid
// positions. Inverted is used to remember that the user is
// selecting bottom-to-top.
var sel = {from: {line: 0, ch: 0}, to: {line: 0, ch: 0}, inverted: false};
// Selection-related flags. shiftSelecting obviously tracks
// whether the user is holding shift.
var shiftSelecting, lastClick, lastDoubleClick, lastScrollTop = 0, draggingText,
overwrite = false, suppressEdits = false, pasteIncoming = false;
// Variables used by startOperation/endOperation to track what
// happened during the operation.
var updateInput, userSelChange, changes, textChanged, selectionChanged,
gutterDirty, callbacks;
// Current visible range (may be bigger than the view window).
var displayOffset = 0, showingFrom = 0, showingTo = 0, lastSizeC = 0;
// bracketHighlighted is used to remember that a bracket has been
// marked.
var bracketHighlighted;
// Tracks the maximum line length so that the horizontal scrollbar
// can be kept static when scrolling.
var maxLine = getLine(0), updateMaxLine = false, maxLineChanged = true;
var pollingFast = false; // Ensures slowPoll doesn't cancel fastPoll
var goalColumn = null;
// Initialize the content.
operation(function(){setValue(options.value || ""); updateInput = false;})();
var history = new History();
// Register our event handlers.
connect(scroller, "mousedown", operation(onMouseDown));
connect(scroller, "dblclick", operation(onDoubleClick));
connect(lineSpace, "selectstart", e_preventDefault);
// Gecko browsers fire contextmenu *after* opening the menu, at
// which point we can't mess with it anymore. Context menu is
// handled in onMouseDown for Gecko.
if (!gecko) connect(scroller, "contextmenu", onContextMenu);
connect(scroller, "scroll", onScrollMain);
connect(scrollbar, "scroll", onScrollBar);
connect(scrollbar, "mousedown", function() {if (focused) setTimeout(focusInput, 0);});
var resizeHandler = connect(window, "resize", function() {
if (wrapper.parentNode) updateDisplay(true);
else resizeHandler();
}, 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);
function drag_(e) {
if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return;
e_stop(e);
}
if (options.dragDrop) {
connect(scroller, "dragstart", onDragStart);
connect(scroller, "dragenter", drag_);
connect(scroller, "dragover", drag_);
connect(scroller, "drop", operation(onDrop));
}
connect(scroller, "paste", function(){focusInput(); fastPoll();});
connect(input, "paste", function(){pasteIncoming = true; fastPoll();});
connect(input, "cut", operation(function(){
if (!options.readOnly) replaceSelection("");
}));
// Needed to handle Tab key in KHTML
if (khtml) connect(sizer, "mouseup", function() {
if (document.activeElement == input) input.blur();
focusInput();
});
// IE throws unspecified error in certain cases, when
// trying to access activeElement before onload
var hasFocus; try { hasFocus = (document.activeElement == input); } catch(e) { }
if (hasFocus || options.autofocus) setTimeout(onFocus, 20);
else onBlur();
function isLine(l) {return l >= 0 && l < doc.size;}
// The instance object that we'll return. Mostly calls out to
// local functions in the CodeMirror function. Some do some extra
// range checking and/or clipping. operation is used to wrap the
// call so that changes it makes are tracked, and the display is
// updated afterwards.
var instance = wrapper.CodeMirror = {
getValue: getValue,
setValue: operation(setValue),
getSelection: getSelection,
replaceSelection: operation(replaceSelection),
focus: function(){window.focus(); focusInput(); onFocus(); fastPoll();},
setOption: function(option, value) {
var oldVal = options[option];
options[option] = value;
if (option == "mode" || option == "indentUnit") loadMode();
else if (option == "readOnly" && value == "nocursor") {onBlur(); input.blur();}
else if (option == "readOnly" && !value) {resetInput(true);}
else if (option == "theme") themeChanged();
else if (option == "lineWrapping" && oldVal != value) operation(wrappingChanged)();
else if (option == "tabSize") updateDisplay(true);
else if (option == "keyMap") keyMapChanged();
else if (option == "tabindex") input.tabIndex = value;
else if (option == "showCursorWhenSelecting") updateSelection();
if (option == "lineNumbers" || option == "gutter" || option == "firstLineNumber" ||
option == "theme" || option == "lineNumberFormatter") {
gutterChanged();
updateDisplay(true);
}
},
getOption: function(option) {return options[option];},
getMode: function() {return mode;},
undo: operation(undo),
redo: operation(redo),
indentLine: operation(function(n, dir) {
if (typeof dir != "string") {
if (dir == null) dir = options.smartIndent ? "smart" : "prev";
else dir = dir ? "add" : "subtract";
}
if (isLine(n)) indentLine(n, dir);
}),
indentSelection: operation(indentSelected),
historySize: function() {return {undo: history.done.length, redo: history.undone.length};},
clearHistory: function() {history = new History();},
setHistory: function(histData) {
history = new History();
history.done = histData.done;
history.undone = histData.undone;
},
getHistory: function() {
function cp(arr) {
for (var i = 0, nw = [], nwelt; i < arr.length; ++i) {
nw.push(nwelt = []);
for (var j = 0, elt = arr[i]; j < elt.length; ++j) {
var old = [], cur = elt[j];
nwelt.push({start: cur.start, added: cur.added, old: old});
for (var k = 0; k < cur.old.length; ++k) old.push(hlText(cur.old[k]));
}
}
return nw;
}
return {done: cp(history.done), undone: cp(history.undone)};
},
matchBrackets: operation(function(){matchBrackets(true);}),
getTokenAt: operation(function(pos) {
pos = clipPos(pos);
return getLine(pos.line).getTokenAt(mode, getStateBefore(pos.line), options.tabSize, pos.ch);
}),
getStateAfter: function(line) {
line = clipLine(line == null ? doc.size - 1: line);
return getStateBefore(line + 1);
},
cursorCoords: function(start, mode) {
if (start == null) start = sel.inverted;
return this.charCoords(start ? sel.from : sel.to, mode);
},
charCoords: function(pos, mode) {
pos = clipPos(pos);
if (mode == "local") return localCoords(pos, false);
if (mode == "div") return localCoords(pos, true);
return pageCoords(pos);
},
coordsChar: function(coords) {
var off = eltOffset(lineSpace);
return coordsChar(coords.x - off.left, coords.y - off.top);
},
defaultTextHeight: function() { return textHeight(); },
markText: operation(markText),
setBookmark: setBookmark,
findMarksAt: findMarksAt,
setMarker: operation(addGutterMarker),
clearMarker: operation(removeGutterMarker),
setLineClass: operation(setLineClass),
hideLine: operation(function(h) {return setLineHidden(h, true);}),
showLine: operation(function(h) {return setLineHidden(h, false);}),
onDeleteLine: function(line, f) {
if (typeof line == "number") {
if (!isLine(line)) return null;
line = getLine(line);
}
(line.handlers || (line.handlers = [])).push(f);
return line;
},
lineInfo: lineInfo,
getViewport: function() { return {from: showingFrom, to: showingTo};},
addWidget: function(pos, node, scroll, vert, horiz) {
pos = localCoords(clipPos(pos));
var top = pos.yBot, left = pos.x;
node.style.position = "absolute";
sizer.appendChild(node);
if (vert == "over") top = pos.y;
else if (vert == "near") {
var vspace = Math.max(scroller.offsetHeight, doc.height * textHeight()),
hspace = Math.max(sizer.clientWidth, lineSpace.clientWidth) - paddingLeft();
if (pos.yBot + node.offsetHeight > vspace && pos.y > node.offsetHeight)
top = pos.y - node.offsetHeight;
if (left + node.offsetWidth > hspace)
left = hspace - node.offsetWidth;
}
node.style.top = (top + paddingTop()) + "px";
node.style.left = node.style.right = "";
if (horiz == "right") {
left = sizer.clientWidth - node.offsetWidth;
node.style.right = "0px";
} else {
if (horiz == "left") left = 0;
else if (horiz == "middle") left = (sizer.clientWidth - node.offsetWidth) / 2;
node.style.left = (left + paddingLeft()) + "px";
}
if (scroll)
scrollIntoView(left, top, left + node.offsetWidth, top + node.offsetHeight);
},
lineCount: function() {return doc.size;},
clipPos: clipPos,
getCursor: function(start) {
if (start == null || start == "head") start = sel.inverted;
if (start == "anchor") start = !sel.inverted;
if (start == "end") start = false;
return copyPos(start ? sel.from : sel.to);
},
somethingSelected: function() {return !posEq(sel.from, sel.to);},
setCursor: operation(function(line, ch, user) {
if (ch == null && typeof line.line == "number") setCursor(line.line, line.ch, user);
else setCursor(line, ch, user);
}),
setSelection: operation(function(from, to, user) {
(user ? setSelectionUser : setSelection)(clipPos(from), clipPos(to || from));
}),
getLine: function(line) {if (isLine(line)) return getLine(line).text;},
getLineHandle: function(line) {if (isLine(line)) return getLine(line);},
setLine: operation(function(line, text) {
if (isLine(line)) replaceRange(text, {line: line, ch: 0}, {line: line, ch: getLine(line).text.length});
}),
removeLine: operation(function(line) {
if (isLine(line)) replaceRange("", {line: line, ch: 0}, clipPos({line: line+1, ch: 0}));
}),
replaceRange: operation(replaceRange),
getRange: function(from, to, lineSep) {return getRange(clipPos(from), clipPos(to), lineSep);},
triggerOnKeyDown: operation(onKeyDown),
execCommand: function(cmd) {return commands[cmd](instance);},
// Stuff used by commands, probably not much use to outside code.
moveH: operation(moveH),
deleteH: operation(deleteH),
moveV: operation(moveV),
toggleOverwrite: function() {
if(overwrite){
overwrite = false;
cursor.className = cursor.className.replace(" CodeMirror-overwrite", "");
} else {
overwrite = true;
cursor.className += " CodeMirror-overwrite";
}
},
posFromIndex: function(off) {
var lineNo = 0, ch;
doc.iter(0, doc.size, function(line) {
var sz = line.text.length + 1;
if (sz > off) { ch = off; return true; }
off -= sz;
++lineNo;
});
return clipPos({line: lineNo, ch: ch});
},
indexFromPos: function (coords) {
if (coords.line < 0 || coords.ch < 0) return 0;
var index = coords.ch;
doc.iter(0, coords.line, function (line) {
index += line.text.length + 1;
});
return index;
},
scrollTo: function(x, y) {
if (x != null) scroller.scrollLeft = x;
if (y != null) scrollbar.scrollTop = scroller.scrollTop = y;
updateDisplay([]);
},
getScrollInfo: function() {
return {x: scroller.scrollLeft, y: scrollbar.scrollTop,
height: scrollbar.scrollHeight, width: scroller.scrollWidth};
},
scrollIntoView: function(pos) {
var coords = localCoords(pos ? clipPos(pos) : sel.inverted ? sel.from : sel.to);
scrollIntoView(coords.x, coords.y, coords.x, coords.yBot);
},
setSize: function(width, height) {
function interpret(val) {
val = String(val);
return /^\d+$/.test(val) ? val + "px" : val;
}
if (width != null) wrapper.style.width = interpret(width);
if (height != null) scroller.style.height = interpret(height);
instance.refresh();
},
operation: function(f){return operation(f)();},
compoundChange: function(f){return compoundChange(f);},
refresh: function(){
updateDisplay(true, null, lastScrollTop);
if (scrollbar.scrollHeight > lastScrollTop)
scrollbar.scrollTop = lastScrollTop;
},
getInputField: function(){return input;},
getWrapperElement: function(){return wrapper;},
getScrollerElement: function(){return scroller;},
getGutterElement: function(){return gutter;}
};
function getLine(n) { return getLineAt(doc, n); }
function updateLineHeight(line, height) {
gutterDirty = true;
var diff = height - line.height;
for (var n = line; n; n = n.parent) n.height += diff;
}
function lineContent(line, wrapAt) {
if (!line.styles)
line.highlight(mode, line.stateAfter = getStateBefore(lineNo(line)), options.tabSize);
return line.getContent(options.tabSize, wrapAt, options.lineWrapping);
}
function setValue(code) {
var top = {line: 0, ch: 0};
updateLines(top, {line: doc.size - 1, ch: getLine(doc.size-1).text.length},
splitLines(code), top, top);
updateInput = true;
}
function getValue(lineSep) {
var text = [];
doc.iter(0, doc.size, function(line) { text.push(line.text); });
return text.join(lineSep || "\n");
}
function onScrollBar(e) {
if (Math.abs(scrollbar.scrollTop - lastScrollTop) > 1) {
lastScrollTop = scroller.scrollTop = scrollbar.scrollTop;
updateDisplay([]);
}
}
function onScrollMain(e) {
if (options.fixedGutter && gutter.style.left != scroller.scrollLeft + "px")
gutter.style.left = scroller.scrollLeft + "px";
if (Math.abs(scroller.scrollTop - lastScrollTop) > 1) {
lastScrollTop = scroller.scrollTop;
if (scrollbar.scrollTop != lastScrollTop)
scrollbar.scrollTop = lastScrollTop;
updateDisplay([]);
}
if (options.onScroll) options.onScroll(instance);
}
function onMouseDown(e) {
setShift(e_prop(e, "shiftKey"));
// Check whether this is a click in a widget
for (var n = e_target(e); n != wrapper; n = n.parentNode)
if (n.parentNode == sizer && n != mover) return;
// See if this is a click in the gutter
for (var n = e_target(e); n != wrapper; n = n.parentNode)
if (n.parentNode == gutterText) {
if (options.onGutterClick)
options.onGutterClick(instance, indexOf(gutterText.childNodes, n) + showingFrom, e);
return e_preventDefault(e);
}
var start = posFromMouse(e);
switch (e_button(e)) {
case 3:
if (gecko) onContextMenu(e);
return;
case 2:
if (start) setCursor(start.line, start.ch, true);
setTimeout(focusInput, 20);
e_preventDefault(e);
return;
}
// For button 1, if it was clicked inside the editor
// (posFromMouse returning non-null), we have to adjust the
// selection.
if (!start) {if (e_target(e) == scroller) e_preventDefault(e); return;}
if (!focused) onFocus();
var now = +new Date, type = "single";
if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
type = "triple";
e_preventDefault(e);
setTimeout(focusInput, 20);
selectLine(start.line);
} else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
type = "double";
lastDoubleClick = {time: now, pos: start};
e_preventDefault(e);
var word = findWordAt(start);
setSelectionUser(word.from, word.to);
} else { lastClick = {time: now, pos: start}; }
function dragEnd(e2) {
if (webkit) scroller.draggable = false;
draggingText = false;
up(); drop();
if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
e_preventDefault(e2);
setCursor(start.line, start.ch, true);
focusInput();
}
}
var last = start, going;
if (options.dragDrop && dragAndDrop && !options.readOnly && !posEq(sel.from, sel.to) &&
!posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") {
// Let the drag handler handle this.
if (webkit) scroller.draggable = true;
var up = connect(document, "mouseup", operation(dragEnd), true);
var drop = connect(scroller, "drop", operation(dragEnd), true);
draggingText = true;
// IE's approach to draggable
if (scroller.dragDrop) scroller.dragDrop();
return;
}
e_preventDefault(e);
if (type == "single") setCursor(start.line, start.ch, true);
var startstart = sel.from, startend = sel.to;
function doSelect(cur) {
if (type == "single") {
setSelectionUser(clipPos(start), cur);
return;
}
startstart = clipPos(startstart);
startend = clipPos(startend);
if (type == "double") {
var word = findWordAt(cur);
if (posLess(cur, startstart)) setSelectionUser(word.from, startend);
else setSelectionUser(startstart, word.to);
} else if (type == "triple") {
if (posLess(cur, startstart)) setSelectionUser(startend, clipPos({line: cur.line, ch: 0}));
else setSelectionUser(startstart, clipPos({line: cur.line + 1, ch: 0}));
}
}
function extend(e) {
var cur = posFromMouse(e, true);
if (cur && !posEq(cur, last)) {
if (!focused) onFocus();
last = cur;
doSelect(cur);
updateInput = false;
var visible = visibleLines();
if (cur.line >= visible.to || cur.line < visible.from)
going = setTimeout(operation(function(){extend(e);}), 150);
}
}
function done(e) {
clearTimeout(going);
var cur = posFromMouse(e);
if (cur) doSelect(cur);
e_preventDefault(e);
focusInput();
updateInput = true;
move(); up();
}
var move = connect(document, "mousemove", operation(function(e) {
clearTimeout(going);
e_preventDefault(e);
if (!ie && !e_button(e)) done(e);
else extend(e);
}), true);
var up = connect(document, "mouseup", operation(done), true);
}
function onDoubleClick(e) {
for (var n = e_target(e); n != wrapper; n = n.parentNode)
if (n.parentNode == gutterText) return e_preventDefault(e);
e_preventDefault(e);
}
function onDrop(e) {
if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return;
e_preventDefault(e);
var pos = posFromMouse(e, true), files = e.dataTransfer.files;
if (!pos || options.readOnly) return;
if (files && files.length && window.FileReader && window.File) {
var n = files.length, text = Array(n), read = 0;
var loadFile = function(file, i) {
var reader = new FileReader;
reader.onload = function() {
text[i] = reader.result;
if (++read == n) {
pos = clipPos(pos);
operation(function() {
var end = replaceRange(text.join(""), pos, pos);
setSelectionUser(pos, end);
})();
}
};
reader.readAsText(file);
};
for (var i = 0; i < n; ++i) loadFile(files[i], i);
} else {
// Don't do a replace if the drop happened inside of the selected text.
if (draggingText && !(posLess(pos, sel.from) || posLess(sel.to, pos))) return;
try {
var text = e.dataTransfer.getData("Text");
if (text) {
compoundChange(function() {
var curFrom = sel.from, curTo = sel.to;
setSelectionUser(pos, pos);
if (draggingText) replaceRange("", curFrom, curTo);
replaceSelection(text);
focusInput();
});
}
}
catch(e){}
}
}
function onDragStart(e) {
var txt = getSelection();
e.dataTransfer.setData("Text", txt);
// Use dummy image instead of default browsers image.
if (e.dataTransfer.setDragImage)
e.dataTransfer.setDragImage(elt('img'), 0, 0);
}
function doHandleBinding(bound, dropShift) {
if (typeof bound == "string") {
bound = commands[bound];
if (!bound) return false;
}
var prevShift = shiftSelecting;
try {
if (options.readOnly) suppressEdits = true;
if (dropShift) shiftSelecting = null;
bound(instance);
} catch(e) {
if (e != Pass) throw e;
return false;
} finally {
shiftSelecting = prevShift;
suppressEdits = false;
}
return true;
}
var maybeTransition;
function handleKeyBinding(e) {
// Handle auto keymap transitions
var startMap = getKeyMap(options.keyMap), next = startMap.auto;
clearTimeout(maybeTransition);
if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
if (getKeyMap(options.keyMap) == startMap) {
options.keyMap = (next.call ? next.call(null, instance) : next);
}
}, 50);
var name = keyNames[e_prop(e, "keyCode")], handled = false;
if (name == null || e.altGraphKey) return false;
if (e_prop(e, "altKey")) name = "Alt-" + name;
if (e_prop(e, flipCtrlCmd ? "metaKey" : "ctrlKey")) name = "Ctrl-" + name;
if (e_prop(e, flipCtrlCmd ? "ctrlKey" : "metaKey")) name = "Cmd-" + name;
var stopped = false;
function stop() { stopped = true; }
if (e_prop(e, "shiftKey")) {
handled = lookupKey("Shift-" + name, options.extraKeys, options.keyMap,
function(b) {return doHandleBinding(b, true);}, stop)
|| lookupKey(name, options.extraKeys, options.keyMap, function(b) {
if (typeof b == "string" && /^go[A-Z]/.test(b)) return doHandleBinding(b);
}, stop);
} else {
handled = lookupKey(name, options.extraKeys, options.keyMap, doHandleBinding, stop);
}
if (stopped) handled = false;
if (handled) {
e_preventDefault(e);
restartBlink();
if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }
}
return handled;
}
function handleCharBinding(e, ch) {
var handled = lookupKey("'" + ch + "'", options.extraKeys,
options.keyMap, function(b) { return doHandleBinding(b, true); });
if (handled) {
e_preventDefault(e);
restartBlink();
}
return handled;
}
var lastStoppedKey = null;
function onKeyDown(e) {
if (!focused) onFocus();
if (ie && e.keyCode == 27) { e.returnValue = false; }
if (pollingFast) { if (readInput()) pollingFast = false; }
if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
var code = e_prop(e, "keyCode");
// IE does strange things with escape.
setShift(code == 16 || e_prop(e, "shiftKey"));
// First give onKeyEvent option a chance to handle this.
var handled = handleKeyBinding(e);
if (opera) {
lastStoppedKey = handled ? code : null;
// Opera has no cut event... we try to at least catch the key combo
if (!handled && code == 88 && e_prop(e, mac ? "metaKey" : "ctrlKey"))
replaceSelection("");
}
}
function onKeyPress(e) {
if (pollingFast) readInput();
if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
var keyCode = e_prop(e, "keyCode"), charCode = e_prop(e, "charCode");
if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(e)) return;
var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
if (options.electricChars && mode.electricChars && options.smartIndent && !options.readOnly) {
if (mode.electricChars.indexOf(ch) > -1)
setTimeout(operation(function() {indentLine(sel.to.line, "smart");}), 75);
}
if (handleCharBinding(e, ch)) return;
fastPoll();
}
function onKeyUp(e) {
if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
if (e_prop(e, "keyCode") == 16) shiftSelecting = null;
}
function onFocus() {
if (options.readOnly == "nocursor") return;
if (!focused) {
if (options.onFocus) options.onFocus(instance);
focused = true;
if (scroller.className.search(/\bCodeMirror-focused\b/) == -1)
scroller.className += " CodeMirror-focused";
}
slowPoll();
restartBlink();
}
function onBlur() {
if (focused) {
if (options.onBlur) options.onBlur(instance);
focused = false;
if (bracketHighlighted)
operation(function(){
if (bracketHighlighted) { bracketHighlighted(); bracketHighlighted = null; }
})();
scroller.className = scroller.className.replace(" CodeMirror-focused", "");
}
clearInterval(blinker);
setTimeout(function() {if (!focused) shiftSelecting = null;}, 150);
}
// Replace the range from from to to by the strings in newText.
// Afterwards, set the selection to selFrom, selTo.
function updateLines(from, to, newText, selFrom, selTo) {
if (suppressEdits) return;
var old = [];
doc.iter(from.line, to.line + 1, function(line) {
old.push(newHL(line.text, line.markedSpans));
});
if (history) {
history.addChange(from.line, newText.length, old);
while (history.done.length > options.undoDepth) history.done.shift();
}
var lines = updateMarkedSpans(hlSpans(old[0]), hlSpans(lst(old)), from.ch, to.ch, newText);
updateLinesNoUndo(from, to, lines, selFrom, selTo);
}
function unredoHelper(from, to) {
if (!from.length) return;
var set = from.pop(), out = [];
for (var i = set.length - 1; i >= 0; i -= 1) {
var change = set[i];
var replaced = [], end = change.start + change.added;
doc.iter(change.start, end, function(line) { replaced.push(newHL(line.text, line.markedSpans)); });
out.push({start: change.start, added: change.old.length, old: replaced});
var pos = {line: change.start + change.old.length - 1,
ch: editEnd(hlText(lst(replaced)), hlText(lst(change.old)))};
updateLinesNoUndo({line: change.start, ch: 0}, {line: end - 1, ch: getLine(end-1).text.length},
change.old, pos, pos);
}
updateInput = true;
to.push(out);
}
function undo() {unredoHelper(history.done, history.undone);}
function redo() {unredoHelper(history.undone, history.done);}
function updateLinesNoUndo(from, to, lines, selFrom, selTo) {
if (suppressEdits) return;
var recomputeMaxLength = false, maxLineLength = maxLine.text.length;
if (!options.lineWrapping)
doc.iter(from.line, to.line + 1, function(line) {
if (!line.hidden && line.text.length == maxLineLength) {recomputeMaxLength = true; return true;}
});
if (from.line != to.line || lines.length > 1) gutterDirty = true;
var nlines = to.line - from.line, firstLine = getLine(from.line), lastLine = getLine(to.line);
var lastHL = lst(lines);
// First adjust the line structure
if (from.ch == 0 && to.ch == 0 && hlText(lastHL) == "") {
// This is a whole-line replace. Treated specially to make
// sure line objects move the way they are supposed to.
var added = [], prevLine = null;
for (var i = 0, e = lines.length - 1; i < e; ++i)
added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
lastLine.update(lastLine.text, hlSpans(lastHL));
if (nlines) doc.remove(from.line, nlines, callbacks);
if (added.length) doc.insert(from.line, added);
} else if (firstLine == lastLine) {
if (lines.length == 1) {
firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]) + firstLine.text.slice(to.ch), hlSpans(lines[0]));
} else {
for (var added = [], i = 1, e = lines.length - 1; i < e; ++i)
added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
added.push(new Line(hlText(lastHL) + firstLine.text.slice(to.ch), hlSpans(lastHL)));
firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
doc.insert(from.line + 1, added);
}
} else if (lines.length == 1) {
firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]) + lastLine.text.slice(to.ch), hlSpans(lines[0]));
doc.remove(from.line + 1, nlines, callbacks);
} else {
var added = [];
firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
lastLine.update(hlText(lastHL) + lastLine.text.slice(to.ch), hlSpans(lastHL));
for (var i = 1, e = lines.length - 1; i < e; ++i)
added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
if (nlines > 1) doc.remove(from.line + 1, nlines - 1, callbacks);
doc.insert(from.line + 1, added);
}
if (options.lineWrapping) {
var perLine = Math.max(5, scroller.clientWidth / charWidth() - 3);
doc.iter(from.line, from.line + lines.length, function(line) {
if (line.hidden) return;
var guess = Math.ceil(line.text.length / perLine) || 1;
if (guess != line.height) updateLineHeight(line, guess);
});
} else {
doc.iter(from.line, from.line + lines.length, function(line) {
var l = line.text;
if (!line.hidden && l.length > maxLineLength) {
maxLine = line; maxLineLength = l.length; maxLineChanged = true;
recomputeMaxLength = false;
}
});
if (recomputeMaxLength) updateMaxLine = true;
}
// Adjust frontier, schedule worker
frontier = Math.min(frontier, from.line);
startWorker(400);
var lendiff = lines.length - nlines - 1;
// Remember that these lines changed, for updating the display
changes.push({from: from.line, to: to.line + 1, diff: lendiff});
if (options.onChange) {
// Normalize lines to contain only strings, since that's what
// the change event handler expects
for (var i = 0; i < lines.length; ++i)
if (typeof lines[i] != "string") lines[i] = lines[i].text;
var changeObj = {from: from, to: to, text: lines};
if (textChanged) {
for (var cur = textChanged; cur.next; cur = cur.next) {}
cur.next = changeObj;
} else textChanged = changeObj;
}
// Update the selection
function updateLine(n) {return n <= Math.min(to.line, to.line + lendiff) ? n : n + lendiff;}
setSelection(clipPos(selFrom), clipPos(selTo),
updateLine(sel.from.line), updateLine(sel.to.line));
}
function needsScrollbar() {
var realHeight = doc.height * textHeight() + 2 * paddingTop();
return realHeight * .99 > scroller.offsetHeight ? realHeight : false;
}
function updateVerticalScroll(scrollTop) {
var scrollHeight = needsScrollbar();
scrollbar.style.display = scrollHeight ? "block" : "none";
if (scrollHeight) {
scrollbarInner.style.height = sizer.style.minHeight = scrollHeight + "px";
scrollbar.style.height = scroller.clientHeight + "px";
if (scrollTop != null) {
scrollbar.scrollTop = scroller.scrollTop = scrollTop;
// 'Nudge' the scrollbar to work around a Webkit bug where,
// in some situations, we'd end up with a scrollbar that
// reported its scrollTop (and looked) as expected, but
// *behaved* as if it was still in a previous state (i.e.
// couldn't scroll up, even though it appeared to be at the
// bottom).
if (webkit) setTimeout(function() {
if (scrollbar.scrollTop != scrollTop) return;
scrollbar.scrollTop = scrollTop + (scrollTop ? -1 : 1);
scrollbar.scrollTop = scrollTop;
}, 0);
}
} else {
sizer.style.minHeight = "";
}
// Position the mover div to align with the current virtual scroll position
mover.style.top = displayOffset * textHeight() + "px";
}
function computeMaxLength() {
maxLine = getLine(0); maxLineChanged = true;
var maxLineLength = maxLine.text.length;
doc.iter(1, doc.size, function(line) {
var l = line.text;
if (!line.hidden && l.length > maxLineLength) {
maxLineLength = l.length; maxLine = line;
}
});
updateMaxLine = false;
}
function replaceRange(code, from, to) {
from = clipPos(from);
if (!to) to = from; else to = clipPos(to);
code = splitLines(code);
function adjustPos(pos) {
if (posLess(pos, from)) return pos;
if (!posLess(to, pos)) return end;
var line = pos.line + code.length - (to.line - from.line) - 1;
var ch = pos.ch;
if (pos.line == to.line)
ch += lst(code).length - (to.ch - (to.line == from.line ? from.ch : 0));
return {line: line, ch: ch};
}
var end;
replaceRange1(code, from, to, function(end1) {
end = end1;
return {from: adjustPos(sel.from), to: adjustPos(sel.to)};
});
return end;
}
function replaceSelection(code, collapse) {
replaceRange1(splitLines(code), sel.from, sel.to, function(end) {
if (collapse == "end") return {from: end, to: end};
else if (collapse == "start") return {from: sel.from, to: sel.from};
else return {from: sel.from, to: end};
});
}
function replaceRange1(code, from, to, computeSel) {
var endch = code.length == 1 ? code[0].length + from.ch : lst(code).length;
var newSel = computeSel({line: from.line + code.length - 1, ch: endch});
updateLines(from, to, code, newSel.from, newSel.to);
}
function getRange(from, to, lineSep) {
var l1 = from.line, l2 = to.line;
if (l1 == l2) return getLine(l1).text.slice(from.ch, to.ch);
var code = [getLine(l1).text.slice(from.ch)];
doc.iter(l1 + 1, l2, function(line) { code.push(line.text); });
code.push(getLine(l2).text.slice(0, to.ch));
return code.join(lineSep || "\n");
}
function getSelection(lineSep) {
return getRange(sel.from, sel.to, lineSep);
}
function slowPoll() {
if (pollingFast) return;
poll.set(options.pollInterval, function() {
readInput();
if (focused) slowPoll();
});
}
function fastPoll() {
var missed = false;
pollingFast = true;
function p() {
var changed = readInput();
if (!changed && !missed) {missed = true; poll.set(60, p);}
else {pollingFast = false; slowPoll();}
}
poll.set(20, p);
}
// Previnput is a hack to work with IME. If we reset the textarea
// on every change, that breaks IME. So we look for changes
// compared to the previous content instead. (Modern browsers have
// events that indicate IME taking place, but these are not widely
// supported or compatible enough yet to rely on.)
var prevInput = "";
function readInput() {
if (!focused || hasSelection(input) || options.readOnly) return false;
var text = input.value;
if (text == prevInput) return false;
if (!nestedOperation) startOperation();
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) && !pasteIncoming)
sel.to = {line: sel.to.line, ch: Math.min(getLine(sel.to.line).text.length, sel.to.ch + (text.length - same))};
replaceSelection(text.slice(same), "end");
if (text.length > 1000) { input.value = prevInput = ""; }
else prevInput = text;
if (!nestedOperation) endOperation();
pasteIncoming = false;
return true;
}
function resetInput(user) {
if (!posEq(sel.from, sel.to)) {
prevInput = "";
input.value = getSelection();
if (focused) selectInput(input);
} else if (user) prevInput = input.value = "";
}
function focusInput() {
if (options.readOnly != "nocursor" && (ie_lt9 || document.activeElement != input))
input.focus();
}
function scrollCursorIntoView() {
var coords = calculateCursorCoords();
scrollIntoView(coords.x, coords.y, coords.x, coords.yBot);
if (!focused) return;
var box = sizer.getBoundingClientRect(), doScroll = null;
if (coords.y + box.top < 0) doScroll = true;
else if (coords.y + box.top + textHeight() > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
if (doScroll != null) {
var hidden = cursor.style.display == "none";
if (hidden) {
cursor.style.display = "";
cursor.style.left = coords.x + "px";
cursor.style.top = (coords.y - displayOffset) + "px";
}
cursor.scrollIntoView(doScroll);
if (hidden) cursor.style.display = "none";
}
}
function calculateCursorCoords() {
var cursor = localCoords(sel.inverted ? sel.from : sel.to);
var x = options.lineWrapping ? Math.min(cursor.x, lineSpace.offsetWidth) : cursor.x;
return {x: x, y: cursor.y, yBot: cursor.yBot};
}
function scrollIntoView(x1, y1, x2, y2) {
var scrollPos = calculateScrollPos(x1, y1, x2, y2);
if (scrollPos.scrollLeft != null) {scroller.scrollLeft = scrollPos.scrollLeft;}
if (scrollPos.scrollTop != null) {scrollbar.scrollTop = scroller.scrollTop = scrollPos.scrollTop;}
}
function calculateScrollPos(x1, y1, x2, y2) {
var pl = paddingLeft(), pt = paddingTop();
y1 += pt; y2 += pt; x1 += pl; x2 += pl;
var screen = scroller.clientHeight, screentop = scrollbar.scrollTop, result = {};
var docBottom = needsScrollbar() || Infinity;
var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10;
if (y1 < screentop) result.scrollTop = atTop ? 0 : Math.max(0, y1);
else if (y2 > screentop + screen) result.scrollTop = (atBottom ? docBottom : y2) - screen;
var screenw = scroller.clientWidth, screenleft = scroller.scrollLeft;
var gutterw = options.fixedGutter ? gutter.clientWidth : 0;
var atLeft = x1 < gutterw + pl + 10;
if (x1 < screenleft + gutterw || atLeft) {
if (atLeft) x1 = 0;
result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
} else if (x2 > screenw + screenleft - 3) {
result.scrollLeft = x2 + 10 - screenw;
}
return result;
}
function visibleLines(scrollTop) {
var lh = textHeight(), top = (scrollTop != null ? scrollTop : scrollbar.scrollTop) - paddingTop();
var fromHeight = Math.max(0, Math.floor(top / lh));
var toHeight = Math.ceil((top + scroller.clientHeight) / lh);
return {from: lineAtHeight(doc, fromHeight),
to: lineAtHeight(doc, toHeight)};
}
// Uses a set of changes plus the current scroll position to
// determine which DOM updates have to be made, and makes the
// updates.
function updateDisplay(changes, suppressCallback, scrollTop) {
if (!scroller.clientWidth) {
showingFrom = showingTo = displayOffset = 0;
return;
}
// Compute the new visible window
// If scrollTop is specified, use that to determine which lines
// to render instead of the current scrollbar position.
var visible = visibleLines(scrollTop);
// Bail out if the visible area is already rendered and nothing changed.
if (changes !== true && changes.length == 0 && visible.from > showingFrom && visible.to < showingTo) {
updateVerticalScroll(scrollTop);
return;
}
var from = Math.max(visible.from - 100, 0), to = Math.min(doc.size, visible.to + 100);
if (showingFrom < from && from - showingFrom < 20) from = showingFrom;
if (showingTo > to && showingTo - to < 20) to = Math.min(doc.size, showingTo);
// Create a range of theoretically intact lines, and punch holes
// in that using the change info.
var intact = changes === true ? [] :
computeIntact([{from: showingFrom, to: showingTo, domStart: 0}], changes);
// Clip off the parts that won't be visible
var intactLines = 0;
for (var i = 0; i < intact.length; ++i) {
var range = intact[i];
if (range.from < from) {range.domStart += (from - range.from); range.from = from;}
if (range.to > to) range.to = to;
if (range.from >= range.to) intact.splice(i--, 1);
else intactLines += range.to - range.from;
}
if (intactLines == to - from && from == showingFrom && to == showingTo) {
updateVerticalScroll(scrollTop);
return;
}
intact.sort(function(a, b) {return a.domStart - b.domStart;});
var th = textHeight(), gutterDisplay = gutter.style.display;
lineDiv.style.display = "none";
patchDisplay(from, to, intact);
lineDiv.style.display = gutter.style.display = "";
var different = from != showingFrom || to != showingTo || lastSizeC != scroller.clientHeight + th;
// This is just a bogus formula that detects when the editor is
// resized or the font size changes.
if (different) lastSizeC = scroller.clientHeight + th;
if (from != showingFrom || to != showingTo && options.onViewportChange)
setTimeout(function(){
if (options.onViewportChange) options.onViewportChange(instance, from, to);
});
showingFrom = from; showingTo = to;
displayOffset = heightAtLine(doc, from);
startWorker(100);
// Since this is all rather error prone, it is honoured with the
// only assertion in the whole file.
if (lineDiv.childNodes.length != showingTo - showingFrom)
throw new Error("BAD PATCH! " + JSON.stringify(intact) + " size=" + (showingTo - showingFrom) +
" nodes=" + lineDiv.childNodes.length);
function checkHeights() {
var curNode = lineDiv.firstChild, heightChanged = false;
doc.iter(showingFrom, showingTo, function(line) {
// Work around bizarro IE7 bug where, sometimes, our curNode
// is magically replaced with a new node in the DOM, leaving
// us with a reference to an orphan (nextSibling-less) node.
if (!curNode) return;
if (!line.hidden) {
var height = Math.round(curNode.offsetHeight / th) || 1;
if (line.height != height) {
updateLineHeight(line, height);
gutterDirty = heightChanged = true;
}
}
curNode = curNode.nextSibling;
});
return heightChanged;
}
if (options.lineWrapping) checkHeights();
gutter.style.display = gutterDisplay;
if (different || gutterDirty) {
// If the gutter grew in size, re-check heights. If those changed, re-draw gutter.
updateGutter() && options.lineWrapping && checkHeights() && updateGutter();
}
updateVerticalScroll(scrollTop);
updateSelection();
if (!suppressCallback && options.onUpdate) options.onUpdate(instance);
return true;
}
function computeIntact(intact, changes) {
for (var i = 0, l = changes.length || 0; i < l; ++i) {
var change = changes[i], intact2 = [], diff = change.diff || 0;
for (var j = 0, l2 = intact.length; j < l2; ++j) {
var range = intact[j];
if (change.to <= range.from && change.diff)
intact2.push({from: range.from + diff, to: range.to + diff,
domStart: range.domStart});
else if (change.to <= range.from || change.from >= range.to)
intact2.push(range);
else {
if (change.from > range.from)
intact2.push({from: range.from, to: change.from, domStart: range.domStart});
if (change.to < range.to)
intact2.push({from: change.to + diff, to: range.to + diff,
domStart: range.domStart + (change.to - range.from)});
}
}
intact = intact2;
}
return intact;
}
function patchDisplay(from, to, intact) {
function killNode(node) {
var tmp = node.nextSibling;
node.parentNode.removeChild(node);
return tmp;
}
// The first pass removes the DOM nodes that aren't intact.
if (!intact.length) removeChildren(lineDiv);
else {
var domPos = 0, curNode = lineDiv.firstChild, n;
for (var i = 0; i < intact.length; ++i) {
var cur = intact[i];
while (cur.domStart > domPos) {curNode = killNode(curNode); domPos++;}
for (var j = 0, e = cur.to - cur.from; j < e; ++j) {curNode = curNode.nextSibling; domPos++;}
}
while (curNode) curNode = killNode(curNode);
}
// This pass fills in the lines that actually changed.
var nextIntact = intact.shift(), curNode = lineDiv.firstChild, j = from;
doc.iter(from, to, function(line) {
if (nextIntact && nextIntact.to == j) nextIntact = intact.shift();
if (!nextIntact || nextIntact.from > j) {
if (line.hidden) var lineElement = elt("pre");
else {
var lineElement = lineContent(line);
if (line.className) lineElement.className = line.className;
// Kludge to make sure the styled element lies behind the selection (by z-index)
if (line.bgClassName) {
var pre = elt("pre", "\u00a0", line.bgClassName, "position: absolute; left: 0; right: 0; top: 0; bottom: 0; z-index: -2");
lineElement = elt("div", [pre, lineElement], null, "position: relative");
}
}
lineDiv.insertBefore(lineElement, 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 fragment = document.createDocumentFragment(), i = showingFrom, normalNode;
doc.iter(showingFrom, Math.max(showingTo, showingFrom + 1), function(line) {
if (line.hidden) {
fragment.appendChild(elt("pre"));
} else {
var marker = line.gutterMarker;
var text = options.lineNumbers ? options.lineNumberFormatter(i + options.firstLineNumber) : null;
if (marker && marker.text)
text = marker.text.replace("%N%", text != null ? text : "");
else if (text == null)
text = "\u00a0";
var markerElement = fragment.appendChild(elt("pre", null, marker && marker.style));
markerElement.innerHTML = text;
for (var j = 1; j < line.height; ++j) {
markerElement.appendChild(elt("br"));
markerElement.appendChild(document.createTextNode("\u00a0"));
}
if (!marker) normalNode = i;
}
++i;
});
gutter.style.display = "none";
removeChildrenAndAdd(gutterText, fragment);
// Make sure scrolling doesn't cause number gutter size to pop
if (normalNode != null && options.lineNumbers) {
var node = gutterText.childNodes[normalNode - showingFrom];
var minwidth = String(doc.size).length, val = eltText(node.firstChild), pad = "";
while (val.length + pad.length < minwidth) pad += "\u00a0";
if (pad) node.insertBefore(document.createTextNode(pad), node.firstChild);
}
gutter.style.display = "";
var resized = Math.abs((parseInt(lineSpace.style.marginLeft) || 0) - gutter.offsetWidth) > 2;
lineSpace.style.marginLeft = gutter.offsetWidth + "px";
gutterDirty = false;
return resized;
}
function updateSelection() {
var collapsed = posEq(sel.from, sel.to);
var fromPos = localCoords(sel.from, true);
var toPos = collapsed ? fromPos : localCoords(sel.to, true);
var headPos = sel.inverted ? fromPos : toPos, th = textHeight();
var wrapOff = eltOffset(wrapper), lineOff = eltOffset(lineDiv);
inputDiv.style.top = Math.max(0, Math.min(scroller.offsetHeight, headPos.y + lineOff.top - wrapOff.top)) + "px";
inputDiv.style.left = Math.max(0, Math.min(scroller.offsetWidth, headPos.x + lineOff.left - wrapOff.left)) + "px";
if (collapsed || options.showCursorWhenSelecting) {
cursor.style.top = headPos.y + "px";
cursor.style.left = (options.lineWrapping ? Math.min(headPos.x, lineSpace.offsetWidth) : headPos.x) + "px";
cursor.style.display = "";
} else {
cursor.style.display = "none";
}
if (!collapsed) {
var sameLine = fromPos.y == toPos.y, fragment = document.createDocumentFragment();
var clientWidth = lineSpace.clientWidth || lineSpace.offsetWidth;
var clientHeight = lineSpace.clientHeight || lineSpace.offsetHeight;
var add = function(left, top, right, height) {
var rstyle = quirksMode ? "width: " + (!right ? clientWidth : clientWidth - right - left) + "px"
: "right: " + (right - 1) + "px";
fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
"px; top: " + top + "px; " + rstyle + "; height: " + height + "px"));
};
if (sel.from.ch && fromPos.y >= 0) {
var right = sameLine ? clientWidth - toPos.x : 0;
add(fromPos.x, fromPos.y, right, th);
}
var middleStart = Math.max(0, fromPos.y + (sel.from.ch ? th : 0));
var middleHeight = Math.min(toPos.y, clientHeight) - middleStart;
if (middleHeight > 0.2 * th)
add(0, middleStart, 0, middleHeight);
if ((!sameLine || !sel.from.ch) && toPos.y < clientHeight - .5 * th)
add(0, toPos.y, clientWidth - toPos.x, th);
removeChildrenAndAdd(selectionDiv, fragment);
selectionDiv.style.display = "";
} else {
selectionDiv.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) {
var from1 = skipHidden(from, oldFrom, sel.from.ch);
// If there is no non-hidden line left, force visibility on current line
if (!from1) setLineHidden(from.line, false);
else from = from1;
}
if (to.line != oldTo) to = skipHidden(to, oldTo, sel.to.ch);
if (posEq(from, to)) sel.inverted = false;
else if (posEq(from, sel.to)) sel.inverted = false;
else if (posEq(to, sel.from)) sel.inverted = true;
if (options.autoClearEmptyLines && posEq(sel.from, sel.to)) {
var head = sel.inverted ? from : to;
if (head.line != sel.from.line && sel.from.line < doc.size) {
var oldLine = getLine(sel.from.line);
if (/^\s+$/.test(oldLine.text))
setTimeout(operation(function() {
if (oldLine.parent && /^\s+$/.test(oldLine.text)) {
var no = lineNo(oldLine);
replaceRange("", {line: no, ch: 0}, {line: no, ch: oldLine.text.length});
}
}, 10));
}
}
sel.from = from; sel.to = to;
selectionChanged = true;
}
function skipHidden(pos, oldLine, oldCh) {
function getNonHidden(dir) {
var lNo = pos.line + dir, end = dir == 1 ? doc.size : -1;
while (lNo != end) {
var line = getLine(lNo);
if (!line.hidden) {
var ch = pos.ch;
if (toEnd || ch > oldCh || ch > line.text.length) ch = line.text.length;
return {line: lNo, ch: ch};
}
lNo += dir;
}
}
var line = getLine(pos.line);
var toEnd = pos.ch == line.text.length && pos.ch != oldCh;
if (!line.hidden) return pos;
if (pos.line >= oldLine) return getNonHidden(1) || getNonHidden(-1);
else return getNonHidden(-1) || getNonHidden(1);
}
function setCursor(line, ch, user) {
var pos = clipPos({line: line, ch: ch || 0});
(user ? setSelectionUser : setSelection)(pos, pos);
}
function clipLine(n) {return Math.max(0, Math.min(n, doc.size-1));}
function clipPos(pos) {
if (pos.line < 0) return {line: 0, ch: 0};
if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc.size-1).text.length};
var ch = pos.ch, linelen = getLine(pos.line).text.length;
if (ch == null || ch > linelen) return {line: pos.line, ch: linelen};
else if (ch < 0) return {line: pos.line, ch: 0};
else return pos;
}
function findPosH(dir, unit) {
var end = sel.inverted ? sel.from : sel.to, line = end.line, ch = end.ch;
var lineObj = getLine(line);
function findNextLine() {
for (var l = line + dir, e = dir < 0 ? -1 : doc.size; l != e; l += dir) {
var lo = getLine(l);
if (!lo.hidden) { line = l; lineObj = lo; return true; }
}
}
function moveOnce(boundToLine) {
if (ch == (dir < 0 ? 0 : lineObj.text.length)) {
if (!boundToLine && findNextLine()) ch = dir < 0 ? lineObj.text.length : 0;
else return false;
} else ch += dir;
return true;
}
if (unit == "char") moveOnce();
else if (unit == "column") moveOnce(true);
else if (unit == "word") {
var sawWord = false;
for (;;) {
if (dir < 0) if (!moveOnce()) break;
if (isWordChar(lineObj.text.charAt(ch))) sawWord = true;
else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;}
if (dir > 0) if (!moveOnce()) break;
}
}
return {line: line, ch: ch};
}
function moveH(dir, unit) {
var pos = dir < 0 ? sel.from : sel.to;
if (shiftSelecting || posEq(sel.from, sel.to)) pos = findPosH(dir, unit);
setCursor(pos.line, pos.ch, true);
}
function deleteH(dir, unit) {
if (!posEq(sel.from, sel.to)) replaceRange("", sel.from, sel.to);
else if (dir < 0) replaceRange("", findPosH(dir, unit), sel.to);
else replaceRange("", sel.from, findPosH(dir, unit));
userSelChange = true;
}
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") {
var screen = Math.min(scroller.clientHeight, window.innerHeight || document.documentElement.clientHeight);
var target = coordsChar(pos.x, pos.y + screen * dir);
} else if (unit == "line") {
var th = textHeight();
var target = coordsChar(pos.x, pos.y + .5 * th + dir * th);
}
if (unit == "page") scrollbar.scrollTop += localCoords(target, true).y - pos.y;
setCursor(target.line, target.ch, true);
goalColumn = pos.x;
}
function findWordAt(pos) {
var line = getLine(pos.line).text;
var start = pos.ch, end = pos.ch;
if (line) {
if (pos.after === false || end == line.length) --start; else ++end;
var startChar = line.charAt(start);
var check = isWordChar(startChar) ? isWordChar :
/\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} :
function(ch) {return !/\s/.test(ch) && isWordChar(ch);};
while (start > 0 && check(line.charAt(start - 1))) --start;
while (end < line.length && check(line.charAt(end))) ++end;
}
return {from: {line: pos.line, ch: start}, to: {line: pos.line, ch: end}};
}
function selectLine(line) {
setSelectionUser({line: line, ch: 0}, clipPos({line: line + 1, ch: 0}));
}
function indentSelected(mode) {
if (posEq(sel.from, sel.to)) return indentLine(sel.from.line, mode);
var e = sel.to.line - (sel.to.ch ? 0 : 1);
for (var i = sel.from.line; i <= e; ++i) indentLine(i, mode);
}
function indentLine(n, how) {
if (!how) how = "add";
if (how == "smart") {
if (!mode.indent) how = "prev";
else var state = getStateBefore(n);
}
var line = getLine(n), curSpace = line.indentation(options.tabSize),
curSpaceString = line.text.match(/^\s*/)[0], indentation;
if (how == "smart") {
indentation = mode.indent(state, line.text.slice(curSpaceString.length), line.text);
if (indentation == Pass) how = "prev";
}
if (how == "prev") {
if (n) indentation = getLine(n-1).indentation(options.tabSize);
else indentation = 0;
}
else if (how == "add") indentation = curSpace + options.indentUnit;
else if (how == "subtract") indentation = curSpace - options.indentUnit;
indentation = Math.max(0, indentation);
var diff = indentation - curSpace;
var indentString = "", pos = 0;
if (options.indentWithTabs)
for (var i = Math.floor(indentation / options.tabSize); i; --i) {pos += options.tabSize; indentString += "\t";}
if (pos < indentation) indentString += spaceStr(indentation - pos);
if (indentString != curSpaceString)
replaceRange(indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length});
line.stateAfter = null;
}
function loadMode() {
mode = CodeMirror.getMode(options, options.mode);
doc.iter(0, doc.size, function(line) { line.stateAfter = null; });
frontier = 0;
startWorker(100);
}
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.minWidth = widthForcer.style.left = "";
} else {
wrapper.className = wrapper.className.replace(" CodeMirror-wrap", "");
computeMaxLength();
doc.iter(0, doc.size, function(line) {
if (line.height != 1 && !line.hidden) updateLineHeight(line, 1);
});
}
changes.push({from: 0, to: doc.size});
}
function themeChanged() {
scroller.className = scroller.className.replace(/\s*cm-s-\S+/g, "") +
options.theme.replace(/(^|\s)\s*/g, " cm-s-");
}
function keyMapChanged() {
var style = keyMap[options.keyMap].style;
wrapper.className = wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
(style ? " cm-keymap-" + style : "");
}
function TextMarker(type, style) { this.lines = []; this.type = type; if (style) this.style = style; }
TextMarker.prototype.clear = operation(function() {
var min, max;
for (var i = 0; i < this.lines.length; ++i) {
var line = this.lines[i];
var span = getMarkedSpanFor(line.markedSpans, this);
if (span.from != null) min = lineNo(line);
if (span.to != null) max = lineNo(line);
line.markedSpans = removeMarkedSpan(line.markedSpans, span);
}
if (min != null) changes.push({from: min, to: max + 1});
this.lines.length = 0;
this.explicitlyCleared = true;
});
TextMarker.prototype.find = function() {
var from, to;
for (var i = 0; i < this.lines.length; ++i) {
var line = this.lines[i];
var span = getMarkedSpanFor(line.markedSpans, this);
if (span.from != null || span.to != null) {
var found = lineNo(line);
if (span.from != null) from = {line: found, ch: span.from};
if (span.to != null) to = {line: found, ch: span.to};
}
}
if (this.type == "bookmark") return from;
return from && {from: from, to: to};
};
function markText(from, to, className, options) {
from = clipPos(from); to = clipPos(to);
var marker = new TextMarker("range", className);
if (options) for (var opt in options) if (options.hasOwnProperty(opt))
marker[opt] = options[opt];
var curLine = from.line;
doc.iter(curLine, to.line + 1, function(line) {
var span = {from: curLine == from.line ? from.ch : null,
to: curLine == to.line ? to.ch : null,
marker: marker};
line.markedSpans = (line.markedSpans || []).concat([span]);
marker.lines.push(line);
++curLine;
});
changes.push({from: from.line, to: to.line + 1});
return marker;
}
function setBookmark(pos) {
pos = clipPos(pos);
var marker = new TextMarker("bookmark"), line = getLine(pos.line);
history.addChange(pos.line, 1, [newHL(line.text, line.markedSpans)], true);
var span = {from: pos.ch, to: pos.ch, marker: marker};
line.markedSpans = (line.markedSpans || []).concat([span]);
marker.lines.push(line);
return marker;
}
function findMarksAt(pos) {
pos = clipPos(pos);
var markers = [], spans = getLine(pos.line).markedSpans;
if (spans) for (var i = 0; i < spans.length; ++i) {
var span = spans[i];
if ((span.from == null || span.from <= pos.ch) &&
(span.to == null || span.to >= pos.ch))
markers.push(span.marker);
}
return markers;
}
function addGutterMarker(line, text, className) {
if (typeof line == "number") line = getLine(clipLine(line));
line.gutterMarker = {text: text, style: className};
gutterDirty = true;
return line;
}
function removeGutterMarker(line) {
if (typeof line == "number") line = getLine(clipLine(line));
line.gutterMarker = null;
gutterDirty = true;
}
function changeLine(handle, op) {
var no = handle, line = handle;
if (typeof handle == "number") line = getLine(clipLine(handle));
else no = lineNo(handle);
if (no == null) return null;
if (op(line, no)) changes.push({from: no, to: no + 1});
else return null;
return line;
}
function setLineClass(handle, className, bgClassName) {
return changeLine(handle, function(line) {
if (line.className != className || line.bgClassName != bgClassName) {
line.className = className;
line.bgClassName = bgClassName;
return true;
}
});
}
function setLineHidden(handle, hidden) {
return changeLine(handle, function(line, no) {
if (line.hidden != hidden) {
line.hidden = hidden;
if (!options.lineWrapping) {
if (hidden && line.text.length == maxLine.text.length) {
updateMaxLine = true;
} else if (!hidden && line.text.length > maxLine.text.length) {
maxLine = line; updateMaxLine = false;
}
}
updateLineHeight(line, hidden ? 0 : 1);
var fline = sel.from.line, tline = sel.to.line;
if (hidden && (fline == no || tline == no)) {
var from = fline == no ? skipHidden({line: fline, ch: 0}, fline, 0) : sel.from;
var to = tline == no ? skipHidden({line: tline, ch: 0}, tline, 0) : sel.to;
// Can't hide the last visible line, we'd have no place to put the cursor
if (!to) return;
setSelection(from, to);
}
return (gutterDirty = true);
}
});
}
function lineInfo(line) {
if (typeof line == "number") {
if (!isLine(line)) return null;
var n = line;
line = getLine(line);
if (!line) return null;
} else {
var n = lineNo(line);
if (n == null) return null;
}
var marker = line.gutterMarker;
return {line: n, handle: line, text: line.text, markerText: marker && marker.text,
markerClass: marker && marker.style, lineClass: line.className, bgClass: line.bgClassName};
}
function measureLine(line, ch) {
if (ch == 0) return {top: 0, left: 0};
var pre = lineContent(line, ch);
removeChildrenAndAdd(measure, pre);
var anchor = pre.anchor;
var top = anchor.offsetTop, left = anchor.offsetLeft;
// Older IEs report zero offsets for spans directly after a wrap
if (ie && top == 0 && left == 0) {
var backup = elt("span", "x");
anchor.parentNode.insertBefore(backup, anchor.nextSibling);
top = backup.offsetTop;
}
return {top: top, left: left};
}
function localCoords(pos, inLineWrap) {
var x, lh = textHeight(), y = lh * (heightAtLine(doc, pos.line) - (inLineWrap ? displayOffset : 0));
if (pos.ch == 0) x = 0;
else {
var sp = measureLine(getLine(pos.line), pos.ch);
x = sp.left;
if (options.lineWrapping) y += Math.max(0, sp.top);
}
return {x: x, y: y, yBot: y + lh};
}
// Coords must be lineSpace-local
function coordsChar(x, y) {
var th = textHeight(), cw = charWidth(), heightPos = displayOffset + Math.floor(y / th);
if (heightPos < 0) return {line: 0, ch: 0};
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};
var wrongLine = false;
function getX(len) {
var sp = measureLine(lineObj, len);
if (tw) {
var off = Math.round(sp.top / th);
wrongLine = off != innerOff;
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) {
var after = x - fromX < toX - x;
return {line: lineNo, ch: after ? from : to, after: after};
}
var middle = Math.ceil((from + to) / 2), middleX = getX(middle);
if (middleX > x) {to = middle; toX = middleX; if (wrongLine) toX += 1000; }
else {from = middle; fromX = middleX;}
}
}
function pageCoords(pos) {
var local = localCoords(pos, true), off = eltOffset(lineSpace);
return {x: off.left + local.x, y: off.top + local.y, yBot: off.top + local.yBot};
}
var cachedHeight, cachedHeightFor, measurePre;
function textHeight() {
if (measurePre == null) {
measurePre = elt("pre");
for (var i = 0; i < 49; ++i) {
measurePre.appendChild(document.createTextNode("x"));
measurePre.appendChild(elt("br"));
}
measurePre.appendChild(document.createTextNode("x"));
}
var offsetHeight = lineDiv.clientHeight;
if (offsetHeight == cachedHeightFor) return cachedHeight;
cachedHeightFor = offsetHeight;
removeChildrenAndAdd(measure, measurePre.cloneNode(true));
cachedHeight = measure.firstChild.offsetHeight / 50 || 1;
removeChildren(measure);
return cachedHeight;
}
var cachedWidth, cachedWidthFor = 0;
function charWidth() {
if (scroller.clientWidth == cachedWidthFor) return cachedWidth;
cachedWidthFor = scroller.clientWidth;
var anchor = elt("span", "x");
var pre = elt("pre", [anchor]);
removeChildrenAndAdd(measure, pre);
return (cachedWidth = anchor.offsetWidth || 10);
}
function paddingTop() {return lineSpace.offsetTop;}
function paddingLeft() {return lineSpace.offsetLeft;}
function posFromMouse(e, liberal) {
var offW = eltOffset(scroller, true), x, y;
// Fails unpredictably on IE[67] when mouse is dragged around quickly.
try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
// This is a mess of a heuristic to try and determine whether a
// scroll-bar was clicked or not, and to return null if one was
// (and !liberal).
if (!liberal && (x - offW.left > scroller.clientWidth || y - offW.top > scroller.clientHeight))
return null;
var offL = eltOffset(lineSpace, true);
return coordsChar(x - offL.left, y - offL.top);
}
var detectingSelectAll;
function onContextMenu(e) {
var pos = posFromMouse(e), scrollPos = scrollbar.scrollTop;
if (!pos || opera) return; // Opera is difficult.
if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))
operation(setCursor)(pos.line, pos.ch);
var oldCSS = input.style.cssText;
inputDiv.style.position = "absolute";
input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
"px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; " +
"border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
focusInput();
resetInput(true);
// Adds "Select all" to context menu in FF
if (posEq(sel.from, sel.to)) input.value = prevInput = " ";
function rehide() {
inputDiv.style.position = "relative";
input.style.cssText = oldCSS;
if (ie_lt9) scrollbar.scrollTop = scrollPos;
slowPoll();
// Try to detect the user choosing select-all
if (input.selectionStart != null) {
clearTimeout(detectingSelectAll);
var extval = input.value = " " + (posEq(sel.from, sel.to) ? "" : input.value), i = 0;
prevInput = " ";
input.selectionStart = 1; input.selectionEnd = extval.length;
detectingSelectAll = setTimeout(function poll(){
if (prevInput == " " && input.selectionStart == 0)
operation(commands.selectAll)(instance);
else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
else resetInput();
}, 200);
}
}
if (gecko) {
e_stop(e);
var mouseup = connect(window, "mouseup", function() {
mouseup();
setTimeout(rehide, 20);
}, true);
} else {
setTimeout(rehide, 50);
}
}
// Cursor-blinking
function restartBlink() {
clearInterval(blinker);
var on = true;
cursor.style.visibility = "";
blinker = setInterval(function() {
cursor.style.visibility = (on = !on) ? "" : "hidden";
}, options.cursorBlinkRate);
}
var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"};
function matchBrackets(autoclear) {
var head = sel.inverted ? sel.from : sel.to, line = getLine(head.line), pos = head.ch - 1;
var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)];
if (!match) return;
var ch = match.charAt(0), forward = match.charAt(1) == ">", d = forward ? 1 : -1, st = line.styles;
for (var off = pos + 1, i = 0, e = st.length; i < e; i+=2)
if ((off -= st[i].length) <= 0) {var style = st[i+1]; break;}
var stack = [line.text.charAt(pos)], re = /[(){}[\]]/;
function scan(line, from, to) {
if (!line.text) return;
var st = line.styles, pos = forward ? 0 : line.text.length - 1, cur;
for (var i = forward ? 0 : st.length - 2, e = forward ? st.length : -2; i != e; i += 2*d) {
var text = st[i];
if (st[i+1] != style) {pos += d * text.length; continue;}
for (var j = forward ? 0 : text.length - 1, te = forward ? text.length : -1; j != te; j += d, pos+=d) {
if (pos >= from && pos < to && re.test(cur = text.charAt(j))) {
var match = matching[cur];
if (match.charAt(1) == ">" == forward) stack.push(cur);
else if (stack.pop() != match.charAt(0)) return {pos: pos, match: false};
else if (!stack.length) return {pos: pos, match: true};
}
}
}
}
for (var i = head.line, e = forward ? Math.min(i + 100, doc.size) : Math.max(-1, i - 100); i != e; i+=d) {
var line = getLine(i), first = i == head.line;
var found = scan(line, first && forward ? pos + 1 : 0, first && !forward ? pos : line.text.length);
if (found) break;
}
if (!found) found = {pos: null, match: false};
var style = found.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket";
var one = markText({line: head.line, ch: pos}, {line: head.line, ch: pos+1}, style),
two = found.pos != null && markText({line: i, ch: found.pos}, {line: i, ch: found.pos + 1}, style);
var clear = operation(function(){one.clear(); two && two.clear();});
if (autoclear) setTimeout(clear, 800);
else bracketHighlighted = clear;
}
// Finds the line to start with when starting a parse. Tries to
// find a line with a stateAfter, so that it can start with a
// valid state. If that fails, it returns the line with the
// smallest indentation, which tends to need the least context to
// parse correctly.
function findStartLine(n) {
var minindent, minline;
for (var search = n, lim = n - 40; search > lim; --search) {
if (search == 0) return 0;
var line = getLine(search-1);
if (line.stateAfter) return search;
var indented = line.indentation(options.tabSize);
if (minline == null || minindent > indented) {
minline = search - 1;
minindent = indented;
}
}
return minline;
}
function getStateBefore(n) {
var pos = findStartLine(n), state = pos && getLine(pos-1).stateAfter;
if (!state) state = startState(mode);
else state = copyState(mode, state);
doc.iter(pos, n, function(line) {
line.process(mode, state, options.tabSize);
line.stateAfter = (pos == n - 1 || pos % 5 == 0) ? copyState(mode, state) : null;
});
return state;
}
function highlightWorker() {
if (frontier >= showingTo) return;
var end = +new Date + options.workTime, state = copyState(mode, getStateBefore(frontier));
var startFrontier = frontier;
doc.iter(frontier, showingTo, function(line) {
if (frontier >= showingFrom) { // Visible
line.highlight(mode, state, options.tabSize);
line.stateAfter = copyState(mode, state);
} else {
line.process(mode, state, options.tabSize);
line.stateAfter = frontier % 5 == 0 ? copyState(mode, state) : null;
}
++frontier;
if (+new Date > end) {
startWorker(options.workDelay);
return true;
}
});
if (showingTo > startFrontier && frontier >= showingFrom)
operation(function() {changes.push({from: startFrontier, to: frontier});})();
}
function startWorker(time) {
if (frontier < showingTo)
highlight.set(time, highlightWorker);
}
// Operations are used to wrap changes in such a way that each
// change won't have to update the cursor and display (which would
// be awkward, slow, and error-prone), but instead updates are
// batched and then all combined and executed at once.
function startOperation() {
updateInput = userSelChange = textChanged = null;
changes = []; selectionChanged = false; callbacks = [];
}
function endOperation() {
if (updateMaxLine) computeMaxLength();
if (maxLineChanged && !options.lineWrapping) {
var cursorWidth = widthForcer.offsetWidth, left = measureLine(maxLine, maxLine.text.length).left;
if (!ie_lt8) {
widthForcer.style.left = left + "px";
lineSpace.style.minWidth = (left + cursorWidth) + "px";
}
maxLineChanged = false;
}
var newScrollPos, updated;
if (selectionChanged) {
var coords = calculateCursorCoords();
newScrollPos = calculateScrollPos(coords.x, coords.y, coords.x, coords.yBot);
}
if (changes.length || newScrollPos && newScrollPos.scrollTop != null)
updated = updateDisplay(changes, true, newScrollPos && newScrollPos.scrollTop);
if (!updated) {
if (selectionChanged) updateSelection();
if (gutterDirty) updateGutter();
}
if (newScrollPos) scrollCursorIntoView();
if (selectionChanged) restartBlink();
if (focused && (updateInput === true || (updateInput !== false && selectionChanged)))
resetInput(userSelChange);
if (selectionChanged && options.matchBrackets)
setTimeout(operation(function() {
if (bracketHighlighted) {bracketHighlighted(); bracketHighlighted = null;}
if (posEq(sel.from, sel.to)) matchBrackets(false);
}), 20);
var sc = selectionChanged, cbs = callbacks; // these can be reset by callbacks
if (textChanged && options.onChange && instance)
options.onChange(instance, textChanged);
if (sc && options.onCursorActivity)
options.onCursorActivity(instance);
for (var i = 0; i < cbs.length; ++i) cbs[i](instance);
if (updated && options.onUpdate) options.onUpdate(instance);
}
var nestedOperation = 0;
function operation(f) {
return function() {
if (!nestedOperation++) startOperation();
try {var result = f.apply(this, arguments);}
finally {if (!--nestedOperation) endOperation();}
return result;
};
}
function compoundChange(f) {
history.startCompound();
try { return f(); } finally { history.endCompound(); }
}
for (var ext in extensions)
if (extensions.propertyIsEnumerable(ext) &&
!instance.propertyIsEnumerable(ext))
instance[ext] = extensions[ext];
for (var i = 0; i < initHooks.length; ++i) initHooks[i](instance);
return instance;
} // (end of function CodeMirror)
// The default configuration options.
CodeMirror.defaults = {
value: "",
mode: null,
theme: "default",
indentUnit: 2,
indentWithTabs: false,
smartIndent: true,
tabSize: 4,
keyMap: "default",
extraKeys: null,
electricChars: true,
autoClearEmptyLines: false,
onKeyEvent: null,
onDragEvent: null,
lineWrapping: false,
lineNumbers: false,
gutter: false,
fixedGutter: false,
firstLineNumber: 1,
showCursorWhenSelecting: false,
readOnly: false,
dragDrop: true,
onChange: null,
onCursorActivity: null,
onViewportChange: null,
onGutterClick: null,
onUpdate: null,
onFocus: null, onBlur: null, onScroll: null,
matchBrackets: false,
cursorBlinkRate: 530,
workTime: 100,
workDelay: 200,
pollInterval: 100,
undoDepth: 40,
tabindex: null,
autofocus: null,
lineNumberFormatter: function(integer) { return integer; }
};
var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
var mac = ios || /Mac/.test(navigator.platform);
var win = /Win/.test(navigator.platform);
// Known modes, by name and by MIME
var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
CodeMirror.defineMode = function(name, mode) {
if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
if (arguments.length > 2) {
mode.dependencies = [];
for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);
}
modes[name] = mode;
};
CodeMirror.defineMIME = function(mime, spec) {
mimeModes[mime] = spec;
};
CodeMirror.resolveMode = function(spec) {
if (typeof spec == "string" && mimeModes.hasOwnProperty(spec))
spec = mimeModes[spec];
else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec))
return CodeMirror.resolveMode("application/xml");
if (typeof spec == "string") return {name: spec};
else return spec || {name: "null"};
};
CodeMirror.getMode = function(options, spec) {
var spec = CodeMirror.resolveMode(spec);
var mfactory = modes[spec.name];
if (!mfactory) return CodeMirror.getMode(options, "text/plain");
var modeObj = mfactory(options, spec);
if (modeExtensions.hasOwnProperty(spec.name)) {
var exts = modeExtensions[spec.name];
for (var prop in exts) {
if (!exts.hasOwnProperty(prop)) continue;
if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
modeObj[prop] = exts[prop];
}
}
modeObj.name = spec.name;
return modeObj;
};
CodeMirror.listModes = function() {
var list = [];
for (var m in modes)
if (modes.propertyIsEnumerable(m)) list.push(m);
return list;
};
CodeMirror.listMIMEs = function() {
var list = [];
for (var m in mimeModes)
if (mimeModes.propertyIsEnumerable(m)) list.push({mime: m, mode: mimeModes[m]});
return list;
};
var extensions = CodeMirror.extensions = {};
CodeMirror.defineExtension = function(name, func) {
extensions[name] = func;
};
var initHooks = [];
CodeMirror.defineInitHook = function(f) {initHooks.push(f);};
var modeExtensions = CodeMirror.modeExtensions = {};
CodeMirror.extendMode = function(mode, properties) {
var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
for (var prop in properties) if (properties.hasOwnProperty(prop))
exts[prop] = properties[prop];
};
var commands = CodeMirror.commands = {
selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});},
killLine: function(cm) {
var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
if (!sel && cm.getLine(from.line).length == from.ch) cm.replaceRange("", from, {line: from.line + 1, ch: 0});
else cm.replaceRange("", from, sel ? to : {line: from.line});
},
deleteLine: function(cm) {var l = cm.getCursor().line; cm.replaceRange("", {line: l, ch: 0}, {line: l});},
undo: function(cm) {cm.undo();},
redo: function(cm) {cm.redo();},
goDocStart: function(cm) {cm.setCursor(0, 0, true);},
goDocEnd: function(cm) {cm.setSelection({line: cm.lineCount() - 1}, null, true);},
goLineStart: function(cm) {cm.setCursor(cm.getCursor().line, 0, true);},
goLineStartSmart: function(cm) {
var cur = cm.getCursor();
var text = cm.getLine(cur.line), firstNonWS = Math.max(0, text.search(/\S/));
cm.setCursor(cur.line, cur.ch <= firstNonWS && cur.ch ? 0 : firstNonWS, true);
},
goLineEnd: function(cm) {cm.setSelection({line: cm.getCursor().line}, null, true);},
goLineUp: function(cm) {cm.moveV(-1, "line");},
goLineDown: function(cm) {cm.moveV(1, "line");},
goPageUp: function(cm) {cm.moveV(-1, "page");},
goPageDown: function(cm) {cm.moveV(1, "page");},
goCharLeft: function(cm) {cm.moveH(-1, "char");},
goCharRight: function(cm) {cm.moveH(1, "char");},
goColumnLeft: function(cm) {cm.moveH(-1, "column");},
goColumnRight: function(cm) {cm.moveH(1, "column");},
goWordLeft: function(cm) {cm.moveH(-1, "word");},
goWordRight: function(cm) {cm.moveH(1, "word");},
delCharLeft: function(cm) {cm.deleteH(-1, "char");},
delCharRight: function(cm) {cm.deleteH(1, "char");},
delWordLeft: function(cm) {cm.deleteH(-1, "word");},
delWordRight: function(cm) {cm.deleteH(1, "word");},
indentAuto: function(cm) {cm.indentSelection("smart");},
indentMore: function(cm) {cm.indentSelection("add");},
indentLess: function(cm) {cm.indentSelection("subtract");},
insertTab: function(cm) {cm.replaceSelection("\t", "end");},
defaultTab: function(cm) {
if (cm.somethingSelected()) cm.indentSelection("add");
else cm.replaceSelection("\t", "end");
},
transposeChars: function(cm) {
var cur = cm.getCursor(), line = cm.getLine(cur.line);
if (cur.ch > 0 && cur.ch < line.length - 1)
cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
{line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1});
},
newlineAndIndent: function(cm) {
cm.replaceSelection("\n", "end");
cm.indentLine(cm.getCursor().line);
},
toggleOverwrite: function(cm) {cm.toggleOverwrite();}
};
var keyMap = CodeMirror.keyMap = {};
keyMap.basic = {
"Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
"End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
"Delete": "delCharRight", "Backspace": "delCharLeft", "Tab": "defaultTab", "Shift-Tab": "indentAuto",
"Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
};
// Note that the save and find-related commands aren't defined by
// default. Unknown commands are simply ignored.
keyMap.pcDefault = {
"Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
"Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
"Ctrl-Left": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
"Ctrl-Backspace": "delWordLeft", "Ctrl-Delete": "delWordRight", "Ctrl-S": "save", "Ctrl-F": "find",
"Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
"Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
fallthrough: "basic"
};
keyMap.macDefault = {
"Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
"Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goWordLeft",
"Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordLeft",
"Ctrl-Alt-Backspace": "delWordRight", "Alt-Delete": "delWordRight", "Cmd-S": "save", "Cmd-F": "find",
"Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
"Cmd-[": "indentLess", "Cmd-]": "indentMore",
fallthrough: ["basic", "emacsy"]
};
keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
keyMap.emacsy = {
"Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
"Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
"Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharRight", "Ctrl-H": "delCharLeft",
"Alt-D": "delWordRight", "Alt-Backspace": "delWordLeft", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
};
function getKeyMap(val) {
if (typeof val == "string") return keyMap[val];
else return val;
}
function lookupKey(name, extraMap, map, handle, stop) {
function lookup(map) {
map = getKeyMap(map);
var found = map[name];
if (found === false) {
if (stop) stop();
return true;
}
if (found != null && handle(found)) return true;
if (map.nofallthrough) {
if (stop) stop();
return true;
}
var fallthrough = map.fallthrough;
if (fallthrough == null) return false;
if (Object.prototype.toString.call(fallthrough) != "[object Array]")
return lookup(fallthrough);
for (var i = 0, e = fallthrough.length; i < e; ++i) {
if (lookup(fallthrough[i])) return true;
}
return false;
}
if (extraMap && lookup(extraMap)) return true;
return lookup(map);
}
function isModifierKey(event) {
var name = keyNames[e_prop(event, "keyCode")];
return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
}
CodeMirror.isModifierKey = isModifierKey;
CodeMirror.fromTextArea = function(textarea, options) {
if (!options) options = {};
options.value = textarea.value;
if (!options.tabindex && textarea.tabindex)
options.tabindex = textarea.tabindex;
// Set autofocus to true if this textarea is focused, or if it has
// autofocus and no other element is focused.
if (options.autofocus == null) {
var hasFocus = document.body;
// doc.activeElement occasionally throws on IE
try { hasFocus = document.activeElement; } catch(e) {}
options.autofocus = hasFocus == textarea ||
textarea.getAttribute("autofocus") != null && hasFocus == document.body;
}
function save() {textarea.value = instance.getValue();}
if (textarea.form) {
// Deplorable hack to make the submit method do the right thing.
var rmSubmit = connect(textarea.form, "submit", save, true);
var form = textarea.form, realSubmit = form.submit;
textarea.form.submit = function wrappedSubmit() {
save();
form.submit = realSubmit;
form.submit();
form.submit = wrappedSubmit;
};
}
textarea.style.display = "none";
var instance = CodeMirror(function(node) {
textarea.parentNode.insertBefore(node, textarea.nextSibling);
}, options);
instance.save = save;
instance.getTextArea = function() { return textarea; };
instance.toTextArea = function() {
save();
textarea.parentNode.removeChild(instance.getWrapperElement());
textarea.style.display = "";
if (textarea.form) {
rmSubmit();
if (typeof textarea.form.submit == "function")
textarea.form.submit = realSubmit;
}
};
return instance;
};
var gecko = /gecko\/\d/i.test(navigator.userAgent);
var ie = /MSIE \d/.test(navigator.userAgent);
var ie_lt8 = /MSIE [1-7]\b/.test(navigator.userAgent);
var ie_lt9 = /MSIE [1-8]\b/.test(navigator.userAgent);
var quirksMode = ie && document.documentMode == 5;
var webkit = /WebKit\//.test(navigator.userAgent);
var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
var chrome = /Chrome\//.test(navigator.userAgent);
var opera = /Opera\//.test(navigator.userAgent);
var safari = /Apple Computer/.test(navigator.vendor);
var khtml = /KHTML\//.test(navigator.userAgent);
var mac_geLion = /Mac OS X 10\D([7-9]|\d\d)\D/.test(navigator.userAgent);
var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
if (opera_version) opera_version = Number(opera_version[1]);
// Some browsers use the wrong event properties to signal cmd/ctrl on OS X
var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11));
// Utility functions for working with state. Exported because modes
// sometimes need to do this.
function copyState(mode, state) {
if (state === true) return state;
if (mode.copyState) return mode.copyState(state);
var nstate = {};
for (var n in state) {
var val = state[n];
if (val instanceof Array) val = val.concat([]);
nstate[n] = val;
}
return nstate;
}
CodeMirror.copyState = copyState;
function startState(mode, a1, a2) {
return mode.startState ? mode.startState(a1, a2) : true;
}
CodeMirror.startState = startState;
CodeMirror.innerMode = function(mode, state) {
while (mode.innerMode) {
var info = mode.innerMode(state);
state = info.state;
mode = info.mode;
}
return info || {mode: mode, state: state};
};
// The character stream used by a mode's parser.
function StringStream(string, tabSize) {
this.pos = this.start = 0;
this.string = string;
this.tabSize = tabSize || 8;
}
StringStream.prototype = {
eol: function() {return this.pos >= this.string.length;},
sol: function() {return this.pos == 0;},
peek: function() {return this.string.charAt(this.pos) || undefined;},
next: function() {
if (this.pos < this.string.length)
return this.string.charAt(this.pos++);
},
eat: function(match) {
var ch = this.string.charAt(this.pos);
if (typeof match == "string") var ok = ch == match;
else var ok = ch && (match.test ? match.test(ch) : match(ch));
if (ok) {++this.pos; return ch;}
},
eatWhile: function(match) {
var start = this.pos;
while (this.eat(match)){}
return this.pos > start;
},
eatSpace: function() {
var start = this.pos;
while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
return this.pos > start;
},
skipToEnd: function() {this.pos = this.string.length;},
skipTo: function(ch) {
var found = this.string.indexOf(ch, this.pos);
if (found > -1) {this.pos = found; return true;}
},
backUp: function(n) {this.pos -= n;},
column: function() {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") {
var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {
if (consume !== false) this.pos += pattern.length;
return true;
}
} else {
var match = this.string.slice(this.pos).match(pattern);
if (match && match.index > 0) return null;
if (match && consume !== false) this.pos += match[0].length;
return match;
}
},
current: function(){return this.string.slice(this.start, this.pos);}
};
CodeMirror.StringStream = StringStream;
function MarkedSpan(from, to, marker) {
this.from = from; this.to = to; this.marker = marker;
}
function getMarkedSpanFor(spans, marker) {
if (spans) for (var i = 0; i < spans.length; ++i) {
var span = spans[i];
if (span.marker == marker) return span;
}
}
function removeMarkedSpan(spans, span) {
var r;
for (var i = 0; i < spans.length; ++i)
if (spans[i] != span) (r || (r = [])).push(spans[i]);
return r;
}
function markedSpansBefore(old, startCh, endCh) {
if (old) for (var i = 0, nw; i < old.length; ++i) {
var span = old[i], marker = span.marker;
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
if (startsBefore || marker.type == "bookmark" && span.from == startCh && span.from != endCh) {
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
(nw || (nw = [])).push({from: span.from,
to: endsAfter ? null : span.to,
marker: marker});
}
}
return nw;
}
function markedSpansAfter(old, endCh) {
if (old) for (var i = 0, nw; i < old.length; ++i) {
var span = old[i], marker = span.marker;
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
if (endsAfter || marker.type == "bookmark" && span.from == endCh) {
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
(nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh,
to: span.to == null ? null : span.to - endCh,
marker: marker});
}
}
return nw;
}
function updateMarkedSpans(oldFirst, oldLast, startCh, endCh, newText) {
if (!oldFirst && !oldLast) return newText;
// Get the spans that 'stick out' on both sides
var first = markedSpansBefore(oldFirst, startCh);
var last = markedSpansAfter(oldLast, endCh);
// Next, merge those two ends
var sameLine = newText.length == 1, offset = lst(newText).length + (sameLine ? startCh : 0);
if (first) {
// Fix up .to properties of first
for (var i = 0; i < first.length; ++i) {
var span = first[i];
if (span.to == null) {
var found = getMarkedSpanFor(last, span.marker);
if (!found) span.to = startCh;
else if (sameLine) span.to = found.to == null ? null : found.to + offset;
}
}
}
if (last) {
// Fix up .from in last (or move them into first in case of sameLine)
for (var i = 0; i < last.length; ++i) {
var span = last[i];
if (span.to != null) span.to += offset;
if (span.from == null) {
var found = getMarkedSpanFor(first, span.marker);
if (!found) {
span.from = offset;
if (sameLine) (first || (first = [])).push(span);
}
} else {
span.from += offset;
if (sameLine) (first || (first = [])).push(span);
}
}
}
var newMarkers = [newHL(newText[0], first)];
if (!sameLine) {
// Fill gap with whole-line-spans
var gap = newText.length - 2, gapMarkers;
if (gap > 0 && first)
for (var i = 0; i < first.length; ++i)
if (first[i].to == null)
(gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker});
for (var i = 0; i < gap; ++i)
newMarkers.push(newHL(newText[i+1], gapMarkers));
newMarkers.push(newHL(lst(newText), last));
}
return newMarkers;
}
// hl stands for history-line, a data structure that can be either a
// string (line without markers) or a {text, markedSpans} object.
function hlText(val) { return typeof val == "string" ? val : val.text; }
function hlSpans(val) {
if (typeof val == "string") return null;
var spans = val.markedSpans, out = null;
for (var i = 0; i < spans.length; ++i) {
if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
else if (out) out.push(spans[i]);
}
return !out ? spans : out.length ? out : null;
}
function newHL(text, spans) { return spans ? {text: text, markedSpans: spans} : text; }
function detachMarkedSpans(line) {
var spans = line.markedSpans;
if (!spans) return;
for (var i = 0; i < spans.length; ++i) {
var lines = spans[i].marker.lines;
var ix = indexOf(lines, line);
lines.splice(ix, 1);
}
line.markedSpans = null;
}
function attachMarkedSpans(line, spans) {
if (!spans) return;
for (var i = 0; i < spans.length; ++i)
var marker = spans[i].marker.lines.push(line);
line.markedSpans = spans;
}
// When measuring the position of the end of a line, different
// browsers require different approaches. If an empty span is added,
// many browsers report bogus offsets. Of those, some (Webkit,
// recent IE) will accept a space without moving the whole span to
// the next line when wrapping it, others work with a zero-width
// space.
var eolSpanContent = " ";
if (gecko || (ie && !ie_lt8)) eolSpanContent = "\u200b";
else if (opera) eolSpanContent = "";
// Line objects. These hold state related to a line, including
// highlighting info (the styles array).
function Line(text, markedSpans) {
this.text = text;
this.height = 1;
attachMarkedSpans(this, markedSpans);
}
Line.prototype = {
update: function(text, markedSpans) {
this.text = text;
this.stateAfter = this.styles = null;
detachMarkedSpans(this);
attachMarkedSpans(this, markedSpans);
},
// Run the given mode's parser over a line, update the styles
// array, which contains alternating fragments of text and CSS
// classes.
highlight: function(mode, state, tabSize) {
var stream = new StringStream(this.text, tabSize), st = this.styles || (this.styles = []);
var pos = st.length = 0;
if (this.text == "" && mode.blankLine) mode.blankLine(state);
while (!stream.eol()) {
var style = mode.token(stream, state), substr = stream.current();
stream.start = stream.pos;
if (pos && st[pos-1] == style) {
st[pos-2] += substr;
} else if (substr) {
st[pos++] = substr; st[pos++] = style;
}
// Give up when line is ridiculously long
if (stream.pos > 5000) {
st[pos++] = this.text.slice(stream.pos); st[pos++] = null;
break;
}
}
},
process: function(mode, state, tabSize) {
var stream = new StringStream(this.text, tabSize);
if (this.text == "" && mode.blankLine) mode.blankLine(state);
while (!stream.eol() && stream.pos <= 5000) {
mode.token(stream, state);
stream.start = stream.pos;
}
},
// Fetch the parser token for a given character. Useful for hacks
// that want to inspect the mode state (say, for completion).
getTokenAt: function(mode, state, tabSize, ch) {
var txt = this.text, stream = new StringStream(txt, tabSize);
while (stream.pos < ch && !stream.eol()) {
stream.start = stream.pos;
var style = mode.token(stream, state);
}
return {start: stream.start,
end: stream.pos,
string: stream.current(),
className: style || null,
state: state};
},
indentation: function(tabSize) {return countColumn(this.text, null, tabSize);},
// Produces an HTML fragment for the line, taking selection,
// marking, and highlighting into account.
getContent: function(tabSize, wrapAt, compensateForWrapping) {
var first = true, col = 0, specials = /[\t\u0000-\u0019\u200b\u2028\u2029\uFEFF]/g;
var pre = elt("pre");
function span_(html, text, style) {
if (!text) return;
// Work around a bug where, in some compat modes, IE ignores leading spaces
if (first && ie && text.charAt(0) == " ") text = "\u00a0" + text.slice(1);
first = false;
if (!specials.test(text)) {
col += text.length;
var content = document.createTextNode(text);
} else {
var content = document.createDocumentFragment(), pos = 0;
while (true) {
specials.lastIndex = pos;
var m = specials.exec(text);
var skipped = m ? m.index - pos : text.length - pos;
if (skipped) {
content.appendChild(document.createTextNode(text.slice(pos, pos + skipped)));
col += skipped;
}
if (!m) break;
pos += skipped + 1;
if (m[0] == "\t") {
var tabWidth = tabSize - col % tabSize;
content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
col += tabWidth;
} else {
var token = elt("span", "\u2022", "cm-invalidchar");
token.title = "\\u" + m[0].charCodeAt(0).toString(16);
content.appendChild(token);
col += 1;
}
}
}
if (style) html.appendChild(elt("span", [content], style));
else html.appendChild(content);
}
var span = span_;
if (wrapAt != null) {
var outPos = 0, anchor = pre.anchor = elt("span");
span = function(html, text, style) {
var l = text.length;
if (wrapAt >= outPos && wrapAt < outPos + l) {
var cut = wrapAt - outPos;
if (cut) {
span_(html, text.slice(0, cut), style);
// See comment at the definition of spanAffectsWrapping
if (compensateForWrapping) {
var view = text.slice(cut - 1, cut + 1);
if (spanAffectsWrapping.test(view)) html.appendChild(elt("wbr"));
else if (!ie_lt8 && /\w\w/.test(view)) html.appendChild(document.createTextNode("\u200d"));
}
}
html.appendChild(anchor);
span_(anchor, opera ? text.slice(cut, cut + 1) : text.slice(cut), style);
if (opera) span_(html, text.slice(cut + 1), style);
wrapAt--;
outPos += l;
} else {
outPos += l;
span_(html, text, style);
if (outPos == wrapAt && outPos == len) {
setTextContent(anchor, eolSpanContent);
html.appendChild(anchor);
}
// Stop outputting HTML when gone sufficiently far beyond measure
else if (outPos > wrapAt + 10 && /\s/.test(text)) span = function(){};
}
};
}
var st = this.styles, allText = this.text, marked = this.markedSpans;
var len = allText.length;
function styleToClass(style) {
if (!style) return null;
return "cm-" + style.replace(/ +/g, " cm-");
}
if (!allText && wrapAt == null) {
span(pre, " ");
} else if (!marked || !marked.length) {
for (var i = 0, ch = 0; ch < len; i+=2) {
var str = st[i], style = st[i+1], l = str.length;
if (ch + l > len) str = str.slice(0, len - ch);
ch += l;
span(pre, str, styleToClass(style));
}
} else {
marked.sort(function(a, b) { return a.from - b.from; });
var pos = 0, i = 0, text = "", style, sg = 0;
var nextChange = marked[0].from || 0, marks = [], markpos = 0;
var advanceMarks = function() {
var m;
while (markpos < marked.length &&
((m = marked[markpos]).from == pos || m.from == null)) {
if (m.marker.type == "range") marks.push(m);
++markpos;
}
nextChange = markpos < marked.length ? marked[markpos].from : Infinity;
for (var i = 0; i < marks.length; ++i) {
var to = marks[i].to;
if (to == null) to = Infinity;
if (to == pos) marks.splice(i--, 1);
else nextChange = Math.min(to, nextChange);
}
};
var m = 0;
while (pos < len) {
if (nextChange == pos) advanceMarks();
var upto = Math.min(len, nextChange);
while (true) {
if (text) {
var end = pos + text.length;
var appliedStyle = style;
for (var j = 0; j < marks.length; ++j) {
var mark = marks[j];
appliedStyle = (appliedStyle ? appliedStyle + " " : "") + mark.marker.style;
if (mark.marker.endStyle && mark.to === Math.min(end, upto)) appliedStyle += " " + mark.marker.endStyle;
if (mark.marker.startStyle && mark.from === pos) appliedStyle += " " + mark.marker.startStyle;
}
span(pre, end > upto ? text.slice(0, upto - pos) : text, appliedStyle);
if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
pos = end;
}
text = st[i++]; style = styleToClass(st[i++]);
}
}
}
return pre;
},
cleanUp: function() {
this.parent = null;
detachMarkedSpans(this);
}
};
// Data structure that holds the sequence of lines.
function LeafChunk(lines) {
this.lines = lines;
this.parent = null;
for (var i = 0, e = lines.length, height = 0; i < e; ++i) {
lines[i].parent = this;
height += lines[i].height;
}
this.height = height;
}
LeafChunk.prototype = {
chunkSize: function() { return this.lines.length; },
remove: function(at, n, callbacks) {
for (var i = at, e = at + n; i < e; ++i) {
var line = this.lines[i];
this.height -= line.height;
line.cleanUp();
if (line.handlers)
for (var j = 0; j < line.handlers.length; ++j) callbacks.push(line.handlers[j]);
}
this.lines.splice(at, n);
},
collapse: function(lines) {
lines.splice.apply(lines, [lines.length, 0].concat(this.lines));
},
insertHeight: function(at, lines, height) {
this.height += height;
this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this;
},
iterN: function(at, n, op) {
for (var e = at + n; at < e; ++at)
if (op(this.lines[at])) return true;
}
};
function BranchChunk(children) {
this.children = children;
var size = 0, height = 0;
for (var i = 0, e = children.length; i < e; ++i) {
var ch = children[i];
size += ch.chunkSize(); height += ch.height;
ch.parent = this;
}
this.size = size;
this.height = height;
this.parent = null;
}
BranchChunk.prototype = {
chunkSize: function() { return this.size; },
remove: function(at, n, callbacks) {
this.size -= n;
for (var i = 0; i < this.children.length; ++i) {
var child = this.children[i], sz = child.chunkSize();
if (at < sz) {
var rm = Math.min(n, sz - at), oldHeight = child.height;
child.remove(at, rm, callbacks);
this.height -= oldHeight - child.height;
if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
if ((n -= rm) == 0) break;
at = 0;
} else at -= sz;
}
if (this.size - n < 25) {
var lines = [];
this.collapse(lines);
this.children = [new LeafChunk(lines)];
this.children[0].parent = this;
}
},
collapse: function(lines) {
for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);
},
insert: function(at, lines) {
var height = 0;
for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
this.insertHeight(at, lines, height);
},
insertHeight: function(at, lines, height) {
this.size += lines.length;
this.height += height;
for (var i = 0, e = this.children.length; i < e; ++i) {
var child = this.children[i], sz = child.chunkSize();
if (at <= sz) {
child.insertHeight(at, lines, height);
if (child.lines && child.lines.length > 50) {
while (child.lines.length > 50) {
var spilled = child.lines.splice(child.lines.length - 25, 25);
var newleaf = new LeafChunk(spilled);
child.height -= newleaf.height;
this.children.splice(i + 1, 0, newleaf);
newleaf.parent = this;
}
this.maybeSpill();
}
break;
}
at -= sz;
}
},
maybeSpill: function() {
if (this.children.length <= 10) return;
var me = this;
do {
var spilled = me.children.splice(me.children.length - 5, 5);
var sibling = new BranchChunk(spilled);
if (!me.parent) { // Become the parent node
var copy = new BranchChunk(me.children);
copy.parent = me;
me.children = [copy, sibling];
me = copy;
} else {
me.size -= sibling.size;
me.height -= sibling.height;
var myIndex = indexOf(me.parent.children, me);
me.parent.children.splice(myIndex + 1, 0, sibling);
}
sibling.parent = me.parent;
} while (me.children.length > 10);
me.parent.maybeSpill();
},
iter: function(from, to, op) { this.iterN(from, to - from, op); },
iterN: function(at, n, op) {
for (var i = 0, e = this.children.length; i < e; ++i) {
var child = this.children[i], sz = child.chunkSize();
if (at < sz) {
var used = Math.min(n, sz - at);
if (child.iterN(at, used, op)) return true;
if ((n -= used) == 0) break;
at = 0;
} else at -= sz;
}
}
};
function getLineAt(chunk, n) {
while (!chunk.lines) {
for (var i = 0;; ++i) {
var child = chunk.children[i], sz = child.chunkSize();
if (n < sz) { chunk = child; break; }
n -= sz;
}
}
return chunk.lines[n];
}
function lineNo(line) {
if (line.parent == null) return null;
var cur = line.parent, no = indexOf(cur.lines, line);
for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
for (var i = 0; ; ++i) {
if (chunk.children[i] == cur) break;
no += chunk.children[i].chunkSize();
}
}
return no;
}
function lineAtHeight(chunk, h) {
var n = 0;
outer: do {
for (var i = 0, e = chunk.children.length; i < e; ++i) {
var child = chunk.children[i], ch = child.height;
if (h < ch) { chunk = child; continue outer; }
h -= ch;
n += child.chunkSize();
}
return n;
} while (!chunk.lines);
for (var i = 0, e = chunk.lines.length; i < e; ++i) {
var line = chunk.lines[i], lh = line.height;
if (h < lh) break;
h -= lh;
}
return n + i;
}
function heightAtLine(chunk, n) {
var h = 0;
outer: do {
for (var i = 0, e = chunk.children.length; i < e; ++i) {
var child = chunk.children[i], sz = child.chunkSize();
if (n < sz) { chunk = child; continue outer; }
n -= sz;
h += child.height;
}
return h;
} while (!chunk.lines);
for (var i = 0; i < n; ++i) h += chunk.lines[i].height;
return h;
}
// The history object 'chunks' changes that are made close together
// and at almost the same time into bigger undoable units.
function History() {
this.time = 0;
this.done = []; this.undone = [];
this.compound = 0;
this.closed = false;
}
History.prototype = {
addChange: function(start, added, old) {
this.undone.length = 0;
var time = +new Date, cur = lst(this.done), last = cur && lst(cur);
var dtime = time - this.time;
if (cur && !this.closed && this.compound) {
cur.push({start: start, added: added, old: old});
} else if (dtime > 400 || !last || this.closed ||
last.start > start + old.length || last.start + last.added < start) {
this.done.push([{start: start, added: added, old: old}]);
this.closed = false;
} else {
var startBefore = Math.max(0, last.start - start),
endAfter = Math.max(0, (start + old.length) - (last.start + last.added));
for (var i = startBefore; i > 0; --i) last.old.unshift(old[i - 1]);
for (var i = endAfter; i > 0; --i) last.old.push(old[old.length - i]);
if (startBefore) last.start = start;
last.added += added - (old.length - startBefore - endAfter);
}
this.time = time;
},
startCompound: function() {
if (!this.compound++) this.closed = true;
},
endCompound: function() {
if (!--this.compound) this.closed = true;
}
};
function stopMethod() {e_stop(this);}
// Ensure an event has a stop method.
function addStop(event) {
if (!event.stop) event.stop = stopMethod;
return event;
}
function e_preventDefault(e) {
if (e.preventDefault) e.preventDefault();
else e.returnValue = false;
}
function e_stopPropagation(e) {
if (e.stopPropagation) e.stopPropagation();
else e.cancelBubble = true;
}
function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
CodeMirror.e_stop = e_stop;
CodeMirror.e_preventDefault = e_preventDefault;
CodeMirror.e_stopPropagation = e_stopPropagation;
function e_target(e) {return e.target || e.srcElement;}
function e_button(e) {
var b = e.which;
if (b == null) {
if (e.button & 1) b = 1;
else if (e.button & 2) b = 3;
else if (e.button & 4) b = 2;
}
if (mac && e.ctrlKey && b == 1) b = 3;
return b;
}
// Allow 3rd-party code to override event properties by adding an override
// object to an event object.
function e_prop(e, prop) {
var overridden = e.override && e.override.hasOwnProperty(prop);
return overridden ? e.override[prop] : e[prop];
}
// Event handler registration. If disconnect is true, it'll return a
// function that unregisters the handler.
function connect(node, type, handler, disconnect) {
if (typeof node.addEventListener == "function") {
node.addEventListener(type, handler, false);
if (disconnect) return function() {node.removeEventListener(type, handler, false);};
} else {
var wrapHandler = function(event) {handler(event || window.event);};
node.attachEvent("on" + type, wrapHandler);
if (disconnect) return function() {node.detachEvent("on" + type, wrapHandler);};
}
}
CodeMirror.connect = connect;
function Delayed() {this.id = null;}
Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};
var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
// Detect drag-and-drop
var dragAndDrop = function() {
// There is *some* kind of drag-and-drop support in IE6-8, but I
// couldn't get it to work yet.
if (ie_lt9) return false;
var div = elt('div');
return "draggable" in div || "dragDrop" in div;
}();
// Feature-detect whether newlines in textareas are converted to \r\n
var lineSep = function () {
var te = elt("textarea");
te.value = "foo\nbar";
if (te.value.indexOf("\r") > -1) return "\r\n";
return "\n";
}();
// For a reason I have yet to figure out, some browsers disallow
// word wrapping between certain characters *only* if a new inline
// element is started between them. This makes it hard to reliably
// measure the position of things, since that requires inserting an
// extra span. This terribly fragile set of regexps matches the
// character combinations that suffer from this phenomenon on the
// various browsers.
var spanAffectsWrapping = /^$/; // Won't match any two-character string
if (gecko) spanAffectsWrapping = /$'/;
else if (safari) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/;
else if (chrome) spanAffectsWrapping = /\-[^ \-\.?]|\?[^ \-\.?\]\}:;!'\"\),\/]|[\.!\"#&%\)*+,:;=>\]|\}~][\(\{\[<]|\$'/;
// Counts the column offset in a string, taking tabs into account.
// Used mostly to find indentation.
function countColumn(string, end, tabSize) {
if (end == null) {
end = string.search(/[^\s\u00a0]/);
if (end == -1) end = string.length;
}
for (var i = 0, n = 0; i < end; ++i) {
if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
else ++n;
}
return n;
}
function eltOffset(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;
}
function eltText(node) {
return node.textContent || node.innerText || node.nodeValue || "";
}
var spaceStrs = [""];
function spaceStr(n) {
while (spaceStrs.length <= n)
spaceStrs.push(lst(spaceStrs) + " ");
return spaceStrs[n];
}
function lst(arr) { return arr[arr.length-1]; }
function selectInput(node) {
if (ios) { // Mobile Safari apparently has a bug where select() is broken.
node.selectionStart = 0;
node.selectionEnd = node.value.length;
} else node.select();
}
// Operations on {line, ch} objects.
function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
function copyPos(x) {return {line: x.line, ch: x.ch};}
function elt(tag, content, className, style) {
var e = document.createElement(tag);
if (className) e.className = className;
if (style) e.style.cssText = style;
if (typeof content == "string") setTextContent(e, content);
else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
return e;
}
function removeChildren(e) {
e.innerHTML = "";
return e;
}
function removeChildrenAndAdd(parent, e) {
removeChildren(parent).appendChild(e);
}
function setTextContent(e, str) {
if (ie_lt9) {
e.innerHTML = "";
e.appendChild(document.createTextNode(str));
} else e.textContent = str;
}
// Used to position the cursor after an undo/redo by finding the
// last edited character.
function editEnd(from, to) {
if (!to) return 0;
if (!from) return to.length;
for (var i = from.length, j = to.length; i >= 0 && j >= 0; --i, --j)
if (from.charAt(i) != to.charAt(j)) break;
return j + 1;
}
function indexOf(collection, elt) {
if (collection.indexOf) return collection.indexOf(elt);
for (var i = 0, e = collection.length; i < e; ++i)
if (collection[i] == elt) return i;
return -1;
}
var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc]/;
function isWordChar(ch) {
return /\w/.test(ch) || ch > "\x80" &&
(ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
}
// See if "".split is the broken IE version, if so, provide an
// alternative way to split lines.
var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
var pos = 0, result = [], l = string.length;
while (pos <= l) {
var nl = string.indexOf("\n", pos);
if (nl == -1) nl = string.length;
var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
var rt = line.indexOf("\r");
if (rt != -1) {
result.push(line.slice(0, rt));
pos += rt + 1;
} else {
result.push(line);
pos = nl + 1;
}
}
return result;
} : function(string){return string.split(/\r\n?|\n/);};
CodeMirror.splitLines = splitLines;
var hasSelection = window.getSelection ? function(te) {
try { return te.selectionStart != te.selectionEnd; }
catch(e) { return false; }
} : function(te) {
try {var range = te.ownerDocument.selection.createRange();}
catch(e) {}
if (!range || range.parentElement() != te) return false;
return range.compareEndPoints("StartToEnd", range) != 0;
};
CodeMirror.defineMode("null", function() {
return {token: function(stream) {stream.skipToEnd();}};
});
CodeMirror.defineMIME("text/plain", "null");
var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete",
186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home",
63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"};
CodeMirror.keyNames = keyNames;
(function() {
// Number keys
for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i);
// Alphabetic keys
for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
// Function keys
for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
})();
CodeMirror.version = "2.38 +";
return CodeMirror;
})();
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