1 /* CodeMirror main module
3 * Implements the CodeMirror constructor and prototype, which take care
4 * of initializing the editor frame, and providing the outside interface.
7 // The CodeMirrorConfig object is used to specify a default
8 // configuration. If you specify such an object before loading this
9 // file, the values you put into it will override the defaults given
10 // below. You can also assign to it after loading.
11 var CodeMirrorConfig = window.CodeMirrorConfig || {};
13 var CodeMirror = (function(){
14 function setDefaults(object, defaults) {
15 for (var option in defaults) {
16 if (!object.hasOwnProperty(option))
17 object[option] = defaults[option];
20 function forEach(array, action) {
21 for (var i = 0; i < array.length; i++)
25 // These default options can be overridden by passing a set of
26 // options to a specific CodeMirror constructor. See manual.html for
28 setDefaults(CodeMirrorConfig, {
32 basefiles: ["util.js", "stringstream.js", "select.js", "undo.js", "editor.js", "tokenize.js"],
36 continuousScanning: false,
41 disableSpellcheck: true,
46 autoMatchParens: false,
48 tabMode: "indent", // or "spaces", "default", "shift"
49 reindentOnLoad: false,
56 function wrapLineNumberDiv(place) {
57 return function(node) {
58 var container = document.createElement("DIV"),
59 nums = document.createElement("DIV"),
60 scroller = document.createElement("DIV");
61 container.style.position = "relative";
62 nums.style.position = "absolute";
63 nums.style.height = "100%";
64 if (nums.style.setExpression) {
65 try {nums.style.setExpression("height", "this.previousSibling.offsetHeight + 'px'");}
66 catch(e) {} // Seems to throw 'Not Implemented' on some IE8 versions
68 nums.style.top = "0px";
69 nums.style.overflow = "hidden";
71 container.appendChild(node);
72 container.appendChild(nums);
73 scroller.className = "CodeMirror-line-numbers";
74 nums.appendChild(scroller);
78 function applyLineNumbers(frame) {
79 var win = frame.contentWindow, doc = win.document,
80 nums = frame.nextSibling, scroller = nums.firstChild;
82 var nextNum = 1, barWidth = null;
84 for (var root = frame; root.parentNode; root = root.parentNode);
85 if (root != document || !win.Editor) {
86 clearInterval(sizeInterval);
90 if (nums.offsetWidth != barWidth) {
91 barWidth = nums.offsetWidth;
92 nums.style.left = "-" + (frame.parentNode.style.marginLeft = barWidth + "px");
96 var diff = 20 + Math.max(doc.body.offsetHeight, frame.offsetHeight) - scroller.offsetHeight;
97 for (var n = Math.ceil(diff / 10); n > 0; n--) {
98 var div = document.createElement("DIV");
99 div.appendChild(document.createTextNode(nextNum++));
100 scroller.appendChild(div);
102 nums.scrollTop = doc.body.scrollTop || doc.documentElement.scrollTop || 0;
106 win.addEventHandler(win, "scroll", update);
107 win.addEventHandler(win, "resize", update);
108 var sizeInterval = setInterval(sizeBar, 500);
111 function CodeMirror(place, options) {
112 // Backward compatibility for deprecated options.
113 if (options.dumbTabs) options.tabMode = "spaces";
114 else if (options.normalTab) options.tabMode = "default";
116 // Use passed options, if any, to override defaults.
117 this.options = options = options || {};
118 setDefaults(options, CodeMirrorConfig);
120 var frame = this.frame = document.createElement("IFRAME");
121 if (options.iframeClass) frame.className = options.iframeClass;
122 frame.frameBorder = 0;
123 frame.src = "javascript:false;";
124 frame.style.border = "0";
125 frame.style.width = options.width;
126 frame.style.height = options.height;
127 // display: block occasionally suppresses some Firefox bugs, so we
128 // always add it, redundant as it sounds.
129 frame.style.display = "block";
131 if (place.appendChild) {
133 place = function(n){node.appendChild(n);};
136 if (options.lineNumbers) place = wrapLineNumberDiv(place);
139 // Link back to this object, so that the editor can fetch options
140 // and add a reference to itself.
141 frame.CodeMirror = this;
142 this.win = frame.contentWindow;
144 if (typeof options.parserfile == "string")
145 options.parserfile = [options.parserfile];
146 if (typeof options.stylesheet == "string")
147 options.stylesheet = [options.stylesheet];
149 var html = ["<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\"><html><head>"];
150 // Hack to work around a bunch of IE8-specific problems.
151 html.push("<meta http-equiv=\"X-UA-Compatible\" content=\"IE=EmulateIE7\"/>");
152 forEach(options.stylesheet, function(file) {
153 html.push("<link rel=\"stylesheet\" type=\"text/css\" href=\"" + file + "\"/>");
155 forEach(options.basefiles.concat(options.parserfile), function(file) {
156 html.push("<script type=\"text/javascript\" src=\"" + options.path + file + "\"></script>");
158 html.push("</head><body style=\"border-width: 0;\" class=\"editbox\" spellcheck=\"" +
159 (options.disableSpellcheck ? "false" : "true") + "\"></body></html>");
161 var doc = this.win.document;
163 doc.write(html.join(""));
167 CodeMirror.prototype = {
169 if (this.options.initCallback) this.options.initCallback(this);
170 if (this.options.lineNumbers) applyLineNumbers(this.frame);
171 if (this.options.reindentOnLoad) this.reindent();
174 getCode: function() {return this.editor.getCode();},
175 setCode: function(code) {this.editor.importCode(code);},
176 selection: function() {this.focusIfIE(); return this.editor.selectedText();},
177 reindent: function() {this.editor.reindent();},
178 reindentSelection: function() {this.focusIfIE(); this.editor.reindentSelection(null);},
180 focusIfIE: function() {
181 // in IE, a lot of selection-related functionality only works when the frame is focused
182 if (this.win.select.ie_selection) this.focus();
186 if (this.editor.selectionSnapshot) // IE hack
187 this.win.select.selectCoords(this.win, this.editor.selectionSnapshot);
189 replaceSelection: function(text) {
191 this.editor.replaceSelection(text);
194 replaceChars: function(text, start, end) {
195 this.editor.replaceChars(text, start, end);
197 getSearchCursor: function(string, fromCursor) {
198 return this.editor.getSearchCursor(string, fromCursor);
201 undo: function() {this.editor.history.undo();},
202 redo: function() {this.editor.history.redo();},
203 historySize: function() {return this.editor.history.historySize();},
204 clearHistory: function() {this.editor.history.clear();},
206 grabKeys: function(callback, filter) {this.editor.grabKeys(callback, filter);},
207 ungrabKeys: function() {this.editor.ungrabKeys();},
209 setParser: function(name) {this.editor.setParser(name);},
211 cursorPosition: function(start) {this.focusIfIE(); return this.editor.cursorPosition(start);},
212 firstLine: function() {return this.editor.firstLine();},
213 lastLine: function() {return this.editor.lastLine();},
214 nextLine: function(line) {return this.editor.nextLine(line);},
215 prevLine: function(line) {return this.editor.prevLine(line);},
216 lineContent: function(line) {return this.editor.lineContent(line);},
217 setLineContent: function(line, content) {this.editor.setLineContent(line, content);},
218 insertIntoLine: function(line, position, content) {this.editor.insertIntoLine(line, position, content);},
219 selectLines: function(startLine, startOffset, endLine, endOffset) {
221 this.editor.selectLines(startLine, startOffset, endLine, endOffset);
223 nthLine: function(n) {
224 var line = this.firstLine();
225 for (; n > 1 && line !== false; n--)
226 line = this.nextLine(line);
229 lineNumber: function(line) {
231 while (line !== false) {
233 line = this.prevLine(line);
238 // Old number-based line interface
239 jumpToLine: function(n) {
240 this.selectLines(this.nthLine(n), 0);
243 currentLine: function() {
244 return this.lineNumber(this.cursorPosition().line);
248 CodeMirror.InvalidLineHandle = {toString: function(){return "CodeMirror.InvalidLineHandle";}};
250 CodeMirror.replace = function(element) {
251 if (typeof element == "string")
252 element = document.getElementById(element);
253 return function(newElement) {
254 element.parentNode.replaceChild(newElement, element);
258 CodeMirror.fromTextArea = function(area, options) {
259 if (typeof area == "string")
260 area = document.getElementById(area);
262 options = options || {};
263 if (area.style.width && options.width == null)
264 options.width = area.style.width;
265 if (area.style.height && options.height == null)
266 options.height = area.style.height;
267 if (options.content == null) options.content = area.value;
270 function updateField() {
271 area.value = mirror.getCode();
273 if (typeof area.form.addEventListener == "function")
274 area.form.addEventListener("submit", updateField, false);
276 area.form.attachEvent("onsubmit", updateField);
279 function insert(frame) {
280 if (area.nextSibling)
281 area.parentNode.insertBefore(frame, area.nextSibling);
283 area.parentNode.appendChild(frame);
286 area.style.display = "none";
287 var mirror = new CodeMirror(insert, options);
291 CodeMirror.isProbablySupported = function() {
292 // This is rather awful, but can be useful.
295 return Number(window.opera.version()) >= 9.52;
296 else if (/Apple Computers, Inc/.test(navigator.vendor) && (match = navigator.userAgent.match(/Version\/(\d+(?:\.\d+)?)\./)))
297 return Number(match[1]) >= 3;
298 else if (document.selection && window.ActiveXObject && (match = navigator.userAgent.match(/MSIE (\d+(?:\.\d*)?)\b/)))
299 return Number(match[1]) >= 6;
300 else if (match = navigator.userAgent.match(/gecko\/(\d{8})/i))
301 return Number(match[1]) >= 20050901;
302 else if (match = navigator.userAgent.match(/AppleWebKit\/(\d+)/))
303 return Number(match[1]) >= 525;