must go first:
+ text = text.replace(/([\W_]|^)(\*\*|__)(?=\S)([^\r]*?\S[\*_]*)\2([\W_]|$)/g,
+ "$1$3$4");
+
+ text = text.replace(/([\W_]|^)(\*|_)(?=\S)([^\r\*_]*?\S)\2([\W_]|$)/g,
+ "$1$3$4");
+
+ return text;
+ }
+
+ function _DoBlockQuotes(text) {
+
+ /*
+ text = text.replace(/
+ ( // Wrap whole match in $1
+ (
+ ^[ \t]*>[ \t]? // '>' at the start of a line
+ .+\n // rest of the first line
+ (.+\n)* // subsequent consecutive lines
+ \n* // blanks
+ )+
+ )
+ /gm, function(){...});
+ */
+
+ text = text.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm,
+ function (wholeMatch, m1) {
+ var bq = m1;
+
+ // attacklab: hack around Konqueror 3.5.4 bug:
+ // "----------bug".replace(/^-/g,"") == "bug"
+
+ bq = bq.replace(/^[ \t]*>[ \t]?/gm, "~0"); // trim one level of quoting
+
+ // attacklab: clean up hack
+ bq = bq.replace(/~0/g, "");
+
+ bq = bq.replace(/^[ \t]+$/gm, ""); // trim whitespace-only lines
+ bq = _RunBlockGamut(bq); // recurse
+
+ bq = bq.replace(/(^|\n)/g, "$1 ");
+ // These leading spaces screw with content, so we need to fix that:
+ bq = bq.replace(
+ /(\s*[^\r]+?<\/pre>)/gm,
+ function (wholeMatch, m1) {
+ var pre = m1;
+ // attacklab: hack around Konqueror 3.5.4 bug:
+ pre = pre.replace(/^ /mg, "~0");
+ pre = pre.replace(/~0/g, "");
+ return pre;
+ });
+
+ return hashBlock("\n" + bq + "\n
");
+ }
+ );
+ return text;
+ }
+
+ function _FormParagraphs(text, doNotUnhash) {
+ //
+ // Params:
+ // $text - string to process with html tags
+ //
+
+ // Strip leading and trailing lines:
+ text = text.replace(/^\n+/g, "");
+ text = text.replace(/\n+$/g, "");
+
+ var grafs = text.split(/\n{2,}/g);
+ var grafsOut = [];
+
+ var markerRe = /~K(\d+)K/;
+
+ //
+ // Wrap
tags.
+ //
+ var end = grafs.length;
+ for (var i = 0; i < end; i++) {
+ var str = grafs[i];
+
+ // if this is an HTML marker, copy it
+ if (markerRe.test(str)) {
+ grafsOut.push(str);
+ }
+ else if (/\S/.test(str)) {
+ str = _RunSpanGamut(str);
+ str = str.replace(/^([ \t]*)/g, "
");
+ str += "
"
+ grafsOut.push(str);
+ }
+
+ }
+ //
+ // Unhashify HTML blocks
+ //
+ if (!doNotUnhash) {
+ end = grafsOut.length;
+ for (var i = 0; i < end; i++) {
+ var foundAny = true;
+ while (foundAny) { // we may need several runs, since the data may be nested
+ foundAny = false;
+ grafsOut[i] = grafsOut[i].replace(/~K(\d+)K/g, function (wholeMatch, id) {
+ foundAny = true;
+ return g_html_blocks[id];
+ });
+ }
+ }
+ }
+ return grafsOut.join("\n\n");
+ }
+
+ function _EncodeAmpsAndAngles(text) {
+ // Smart processing for ampersands and angle brackets that need to be encoded.
+
+ // Ampersand-encoding based entirely on Nat Irons's Amputator MT plugin:
+ // http://bumppo.net/projects/amputator/
+ text = text.replace(/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/g, "&");
+
+ // Encode naked <'s
+ text = text.replace(/<(?![a-z\/?\$!])/gi, "<");
+
+ return text;
+ }
+
+ function _EncodeBackslashEscapes(text) {
+ //
+ // Parameter: String.
+ // Returns: The string, with after processing the following backslash
+ // escape sequences.
+ //
+
+ // attacklab: The polite way to do this is with the new
+ // escapeCharacters() function:
+ //
+ // text = escapeCharacters(text,"\\",true);
+ // text = escapeCharacters(text,"`*_{}[]()>#+-.!",true);
+ //
+ // ...but we're sidestepping its use of the (slow) RegExp constructor
+ // as an optimization for Firefox. This function gets called a LOT.
+
+ text = text.replace(/\\(\\)/g, escapeCharacters_callback);
+ text = text.replace(/\\([`*_{}\[\]()>#+-.!])/g, escapeCharacters_callback);
+ return text;
+ }
+
+ function _DoAutoLinks(text) {
+
+ // note that at this point, all other URL in the text are already hyperlinked as
+ // *except* for the case
+
+ // automatically add < and > around unadorned raw hyperlinks
+ // must be preceded by space/BOF and followed by non-word/EOF character
+ text = text.replace(/(^|\s)(https?|ftp)(:\/\/[-A-Z0-9+&@#\/%?=~_|\[\]\(\)!:,\.;]*[-A-Z0-9+&@#\/%=~_|\[\]])($|\W)/gi, "$1<$2$3>$4");
+
+ // autolink anything like
+
+ var replacer = function (wholematch, m1) { return "" + pluginHooks.plainLinkText(m1) + ""; }
+ text = text.replace(/<((https?|ftp):[^'">\s]+)>/gi, replacer);
+
+ // Email addresses:
+ /*
+ text = text.replace(/
+ <
+ (?:mailto:)?
+ (
+ [-.\w]+
+ \@
+ [-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+
+ )
+ >
+ /gi, _DoAutoLinks_callback());
+ */
+
+ /* disabling email autolinking, since we don't do that on the server, either
+ text = text.replace(/<(?:mailto:)?([-.\w]+\@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,
+ function(wholeMatch,m1) {
+ return _EncodeEmailAddress( _UnescapeSpecialChars(m1) );
+ }
+ );
+ */
+ return text;
+ }
+
+ function _UnescapeSpecialChars(text) {
+ //
+ // Swap back in all the special characters we've hidden.
+ //
+ text = text.replace(/~E(\d+)E/g,
+ function (wholeMatch, m1) {
+ var charCodeToReplace = parseInt(m1);
+ return String.fromCharCode(charCodeToReplace);
+ }
+ );
+ return text;
+ }
+
+ function _Outdent(text) {
+ //
+ // Remove one level of line-leading tabs or spaces
+ //
+
+ // attacklab: hack around Konqueror 3.5.4 bug:
+ // "----------bug".replace(/^-/g,"") == "bug"
+
+ text = text.replace(/^(\t|[ ]{1,4})/gm, "~0"); // attacklab: g_tab_width
+
+ // attacklab: clean up hack
+ text = text.replace(/~0/g, "")
+
+ return text;
+ }
+
+ function _Detab(text) {
+ if (!/\t/.test(text))
+ return text;
+
+ var spaces = [" ", " ", " ", " "],
+ skew = 0,
+ v;
+
+ return text.replace(/[\n\t]/g, function (match, offset) {
+ if (match === "\n") {
+ skew = offset + 1;
+ return match;
+ }
+ v = (offset - skew) % 4;
+ skew = offset + 1;
+ return spaces[v];
+ });
+ }
+
+ //
+ // attacklab: Utility functions
+ //
+
+ var _problemUrlChars = /(?:["'*()[\]:]|~D)/g;
+
+ // hex-encodes some unusual "problem" chars in URLs to avoid URL detection problems
+ function encodeProblemUrlChars(url) {
+ if (!url)
+ return "";
+
+ var len = url.length;
+
+ return url.replace(_problemUrlChars, function (match, offset) {
+ if (match == "~D") // escape for dollar
+ return "%24";
+ if (match == ":") {
+ if (offset == len - 1 || /[0-9\/]/.test(url.charAt(offset + 1)))
+ return ":"
+ }
+ return "%" + match.charCodeAt(0).toString(16);
+ });
+ }
+
+
+ function escapeCharacters(text, charsToEscape, afterBackslash) {
+ // First we have to escape the escape characters so that
+ // we can build a character class out of them
+ var regexString = "([" + charsToEscape.replace(/([\[\]\\])/g, "\\$1") + "])";
+
+ if (afterBackslash) {
+ regexString = "\\\\" + regexString;
+ }
+
+ var regex = new RegExp(regexString, "g");
+ text = text.replace(regex, escapeCharacters_callback);
+
+ return text;
+ }
+
+
+ function escapeCharacters_callback(wholeMatch, m1) {
+ var charCodeToEscape = m1.charCodeAt(0);
+ return "~E" + charCodeToEscape + "E";
+ }
+
+ }; // end of the Markdown.Converter constructor
+
+})();
diff --git a/pagedown/Markdown.Editor.js b/pagedown/Markdown.Editor.js
new file mode 100644
index 0000000..25bf5a5
--- /dev/null
+++ b/pagedown/Markdown.Editor.js
@@ -0,0 +1,2170 @@
+// needs Markdown.Converter.js at the moment
+
+(function () {
+
+ var util = {},
+ position = {},
+ ui = {},
+ doc = window.document,
+ re = window.RegExp,
+ nav = window.navigator,
+ SETTINGS = { lineLength: 72 },
+
+ // Used to work around some browser bugs where we can't use feature testing.
+ uaSniffed = {
+ isIE: /msie/.test(nav.userAgent.toLowerCase()),
+ isIE_5or6: /msie 6/.test(nav.userAgent.toLowerCase()) || /msie 5/.test(nav.userAgent.toLowerCase()),
+ isOpera: /opera/.test(nav.userAgent.toLowerCase())
+ };
+
+
+ // -------------------------------------------------------------------
+ // YOUR CHANGES GO HERE
+ //
+ // I've tried to localize the things you are likely to change to
+ // this area.
+ // -------------------------------------------------------------------
+
+ // The text that appears on the upper part of the dialog box when
+ // entering links.
+ var linkDialogText = 'Enter the web address.
';
+ var imageDialogText = 'Enter the image URL.
';
+
+ // The default text that appears in the dialog input box when entering
+ // links.
+ var imageDefaultText = "http://";
+ var linkDefaultText = "http://";
+
+ // The location of your button images relative to the base directory.
+ var imageDirectory = "images/";
+
+ // Some intervals in ms. These can be adjusted to reduce the control's load.
+ var previewPollInterval = 500;
+ var pastePollInterval = 100;
+
+ // The link and title for the help button
+ var defaultHelpHoverTitle = "Help with formatting";
+
+
+
+ // -------------------------------------------------------------------
+ // END OF YOUR CHANGES
+ // -------------------------------------------------------------------
+
+ // help, if given, should have a property "handler", the click handler for the help button,
+ // and can have an optional property "title" for the button's tooltip (defaults to "Markdown Editing Help").
+ // If help isn't given, not help button is created.
+ //
+ // The constructed editor object has the methods:
+ // - getConverter() returns the markdown converter object that was passed to the constructor
+ // - run() actually starts the editor; should be called after all necessary plugins are registered. Calling this more than once is a no-op.
+ // - refreshPreview() forces the preview to be updated. This method is only available after run() was called.
+ Markdown.Editor = function (markdownConverter, idPostfix, help) {
+
+ idPostfix = idPostfix || "";
+
+ var hooks = this.hooks = new Markdown.HookCollection();
+ hooks.addNoop("onPreviewRefresh"); // called with no arguments after the preview has been refreshed
+ hooks.addNoop("postBlockquoteCreation"); // called with the user's selection *after* the blockquote was created; should return the actual to-be-inserted text
+ hooks.addFalse("insertImageDialog"); /* called with one parameter: a callback to be called with the URL of the image. If the application creates
+ * its own image insertion dialog, this hook should return true, and the callback should be called with the chosen
+ * image url (or null if the user cancelled). If this hook returns false, the default dialog will be used.
+ */
+
+ this.getConverter = function () { return markdownConverter; }
+
+ var that = this,
+ panels;
+
+ this.run = function () {
+ if (panels)
+ return; // already initialized
+
+ panels = new PanelCollection(idPostfix);
+ var commandManager = new CommandManager(hooks);
+ var previewManager = new PreviewManager(markdownConverter, panels, function () { hooks.onPreviewRefresh(); });
+ var undoManager, uiManager;
+
+ if (!/\?noundo/.test(doc.location.href)) {
+ undoManager = new UndoManager(function () {
+ previewManager.refresh();
+ if (uiManager) // not available on the first call
+ uiManager.setUndoRedoButtonStates();
+ }, panels);
+ this.textOperation = function (f) {
+ undoManager.setCommandMode();
+ f();
+ that.refreshPreview();
+ }
+ }
+
+ uiManager = new UIManager(idPostfix, panels, undoManager, previewManager, commandManager, help);
+ uiManager.setUndoRedoButtonStates();
+
+ var forceRefresh = that.refreshPreview = function () { previewManager.refresh(true); };
+
+ forceRefresh();
+ };
+
+ }
+
+ // before: contains all the text in the input box BEFORE the selection.
+ // after: contains all the text in the input box AFTER the selection.
+ function Chunks() { }
+
+ // startRegex: a regular expression to find the start tag
+ // endRegex: a regular expresssion to find the end tag
+ Chunks.prototype.findTags = function (startRegex, endRegex) {
+
+ var chunkObj = this;
+ var regex;
+
+ if (startRegex) {
+
+ regex = util.extendRegExp(startRegex, "", "$");
+
+ this.before = this.before.replace(regex,
+ function (match) {
+ chunkObj.startTag = chunkObj.startTag + match;
+ return "";
+ });
+
+ regex = util.extendRegExp(startRegex, "^", "");
+
+ this.selection = this.selection.replace(regex,
+ function (match) {
+ chunkObj.startTag = chunkObj.startTag + match;
+ return "";
+ });
+ }
+
+ if (endRegex) {
+
+ regex = util.extendRegExp(endRegex, "", "$");
+
+ this.selection = this.selection.replace(regex,
+ function (match) {
+ chunkObj.endTag = match + chunkObj.endTag;
+ return "";
+ });
+
+ regex = util.extendRegExp(endRegex, "^", "");
+
+ this.after = this.after.replace(regex,
+ function (match) {
+ chunkObj.endTag = match + chunkObj.endTag;
+ return "";
+ });
+ }
+ };
+
+ // If remove is false, the whitespace is transferred
+ // to the before/after regions.
+ //
+ // If remove is true, the whitespace disappears.
+ Chunks.prototype.trimWhitespace = function (remove) {
+ var beforeReplacer, afterReplacer, that = this;
+ if (remove) {
+ beforeReplacer = afterReplacer = "";
+ } else {
+ beforeReplacer = function (s) { that.before += s; return ""; }
+ afterReplacer = function (s) { that.after = s + that.after; return ""; }
+ }
+
+ this.selection = this.selection.replace(/^(\s*)/, beforeReplacer).replace(/(\s*)$/, afterReplacer);
+ };
+
+
+ Chunks.prototype.skipLines = function (nLinesBefore, nLinesAfter, findExtraNewlines) {
+
+ if (nLinesBefore === undefined) {
+ nLinesBefore = 1;
+ }
+
+ if (nLinesAfter === undefined) {
+ nLinesAfter = 1;
+ }
+
+ nLinesBefore++;
+ nLinesAfter++;
+
+ var regexText;
+ var replacementText;
+
+ // chrome bug ... documented at: http://meta.stackoverflow.com/questions/63307/blockquote-glitch-in-editor-in-chrome-6-and-7/65985#65985
+ if (navigator.userAgent.match(/Chrome/)) {
+ "X".match(/()./);
+ }
+
+ this.selection = this.selection.replace(/(^\n*)/, "");
+
+ this.startTag = this.startTag + re.$1;
+
+ this.selection = this.selection.replace(/(\n*$)/, "");
+ this.endTag = this.endTag + re.$1;
+ this.startTag = this.startTag.replace(/(^\n*)/, "");
+ this.before = this.before + re.$1;
+ this.endTag = this.endTag.replace(/(\n*$)/, "");
+ this.after = this.after + re.$1;
+
+ if (this.before) {
+
+ regexText = replacementText = "";
+
+ while (nLinesBefore--) {
+ regexText += "\\n?";
+ replacementText += "\n";
+ }
+
+ if (findExtraNewlines) {
+ regexText = "\\n*";
+ }
+ this.before = this.before.replace(new re(regexText + "$", ""), replacementText);
+ }
+
+ if (this.after) {
+
+ regexText = replacementText = "";
+
+ while (nLinesAfter--) {
+ regexText += "\\n?";
+ replacementText += "\n";
+ }
+ if (findExtraNewlines) {
+ regexText = "\\n*";
+ }
+
+ this.after = this.after.replace(new re(regexText, ""), replacementText);
+ }
+ };
+
+ // end of Chunks
+
+ // A collection of the important regions on the page.
+ // Cached so we don't have to keep traversing the DOM.
+ // Also holds ieCachedRange and ieCachedScrollTop, where necessary; working around
+ // this issue:
+ // Internet explorer has problems with CSS sprite buttons that use HTML
+ // lists. When you click on the background image "button", IE will
+ // select the non-existent link text and discard the selection in the
+ // textarea. The solution to this is to cache the textarea selection
+ // on the button's mousedown event and set a flag. In the part of the
+ // code where we need to grab the selection, we check for the flag
+ // and, if it's set, use the cached area instead of querying the
+ // textarea.
+ //
+ // This ONLY affects Internet Explorer (tested on versions 6, 7
+ // and 8) and ONLY on button clicks. Keyboard shortcuts work
+ // normally since the focus never leaves the textarea.
+ function PanelCollection(postfix) {
+ this.buttonBar = doc.getElementById("wmd-button-bar" + postfix);
+ this.preview = doc.getElementById("wmd-preview" + postfix);
+ this.input = doc.getElementById("wmd-input" + postfix);
+ };
+
+ // Returns true if the DOM element is visible, false if it's hidden.
+ // Checks if display is anything other than none.
+ util.isVisible = function (elem) {
+
+ if (window.getComputedStyle) {
+ // Most browsers
+ return window.getComputedStyle(elem, null).getPropertyValue("display") !== "none";
+ }
+ else if (elem.currentStyle) {
+ // IE
+ return elem.currentStyle["display"] !== "none";
+ }
+ };
+
+
+ // Adds a listener callback to a DOM element which is fired on a specified
+ // event.
+ util.addEvent = function (elem, event, listener) {
+ if (elem.attachEvent) {
+ // IE only. The "on" is mandatory.
+ elem.attachEvent("on" + event, listener);
+ }
+ else {
+ // Other browsers.
+ elem.addEventListener(event, listener, false);
+ }
+ };
+
+
+ // Removes a listener callback from a DOM element which is fired on a specified
+ // event.
+ util.removeEvent = function (elem, event, listener) {
+ if (elem.detachEvent) {
+ // IE only. The "on" is mandatory.
+ elem.detachEvent("on" + event, listener);
+ }
+ else {
+ // Other browsers.
+ elem.removeEventListener(event, listener, false);
+ }
+ };
+
+ // Converts \r\n and \r to \n.
+ util.fixEolChars = function (text) {
+ text = text.replace(/\r\n/g, "\n");
+ text = text.replace(/\r/g, "\n");
+ return text;
+ };
+
+ // Extends a regular expression. Returns a new RegExp
+ // using pre + regex + post as the expression.
+ // Used in a few functions where we have a base
+ // expression and we want to pre- or append some
+ // conditions to it (e.g. adding "$" to the end).
+ // The flags are unchanged.
+ //
+ // regex is a RegExp, pre and post are strings.
+ util.extendRegExp = function (regex, pre, post) {
+
+ if (pre === null || pre === undefined) {
+ pre = "";
+ }
+ if (post === null || post === undefined) {
+ post = "";
+ }
+
+ var pattern = regex.toString();
+ var flags;
+
+ // Replace the flags with empty space and store them.
+ pattern = pattern.replace(/\/([gim]*)$/, function (wholeMatch, flagsPart) {
+ flags = flagsPart;
+ return "";
+ });
+
+ // Remove the slash delimiters on the regular expression.
+ pattern = pattern.replace(/(^\/|\/$)/g, "");
+ pattern = pre + pattern + post;
+
+ return new re(pattern, flags);
+ }
+
+ // UNFINISHED
+ // The assignment in the while loop makes jslint cranky.
+ // I'll change it to a better loop later.
+ position.getTop = function (elem, isInner) {
+ var result = elem.offsetTop;
+ if (!isInner) {
+ while (elem = elem.offsetParent) {
+ result += elem.offsetTop;
+ }
+ }
+ return result;
+ };
+
+ position.getHeight = function (elem) {
+ return elem.offsetHeight || elem.scrollHeight;
+ };
+
+ position.getWidth = function (elem) {
+ return elem.offsetWidth || elem.scrollWidth;
+ };
+
+ position.getPageSize = function () {
+
+ var scrollWidth, scrollHeight;
+ var innerWidth, innerHeight;
+
+ // It's not very clear which blocks work with which browsers.
+ if (self.innerHeight && self.scrollMaxY) {
+ scrollWidth = doc.body.scrollWidth;
+ scrollHeight = self.innerHeight + self.scrollMaxY;
+ }
+ else if (doc.body.scrollHeight > doc.body.offsetHeight) {
+ scrollWidth = doc.body.scrollWidth;
+ scrollHeight = doc.body.scrollHeight;
+ }
+ else {
+ scrollWidth = doc.body.offsetWidth;
+ scrollHeight = doc.body.offsetHeight;
+ }
+
+ if (self.innerHeight) {
+ // Non-IE browser
+ innerWidth = self.innerWidth;
+ innerHeight = self.innerHeight;
+ }
+ else if (doc.documentElement && doc.documentElement.clientHeight) {
+ // Some versions of IE (IE 6 w/ a DOCTYPE declaration)
+ innerWidth = doc.documentElement.clientWidth;
+ innerHeight = doc.documentElement.clientHeight;
+ }
+ else if (doc.body) {
+ // Other versions of IE
+ innerWidth = doc.body.clientWidth;
+ innerHeight = doc.body.clientHeight;
+ }
+
+ var maxWidth = Math.max(scrollWidth, innerWidth);
+ var maxHeight = Math.max(scrollHeight, innerHeight);
+ return [maxWidth, maxHeight, innerWidth, innerHeight];
+ };
+
+ // Handles pushing and popping TextareaStates for undo/redo commands.
+ // I should rename the stack variables to list.
+ function UndoManager(callback, panels) {
+
+ var undoObj = this;
+ var undoStack = []; // A stack of undo states
+ var stackPtr = 0; // The index of the current state
+ var mode = "none";
+ var lastState; // The last state
+ var timer; // The setTimeout handle for cancelling the timer
+ var inputStateObj;
+
+ // Set the mode for later logic steps.
+ var setMode = function (newMode, noSave) {
+ if (mode != newMode) {
+ mode = newMode;
+ if (!noSave) {
+ saveState();
+ }
+ }
+
+ if (!uaSniffed.isIE || mode != "moving") {
+ timer = setTimeout(refreshState, 1);
+ }
+ else {
+ inputStateObj = null;
+ }
+ };
+
+ var refreshState = function (isInitialState) {
+ inputStateObj = new TextareaState(panels, isInitialState);
+ timer = undefined;
+ };
+
+ this.setCommandMode = function () {
+ mode = "command";
+ saveState();
+ timer = setTimeout(refreshState, 0);
+ };
+
+ this.canUndo = function () {
+ return stackPtr > 1;
+ };
+
+ this.canRedo = function () {
+ if (undoStack[stackPtr + 1]) {
+ return true;
+ }
+ return false;
+ };
+
+ // Removes the last state and restores it.
+ this.undo = function () {
+
+ if (undoObj.canUndo()) {
+ if (lastState) {
+ // What about setting state -1 to null or checking for undefined?
+ lastState.restore();
+ lastState = null;
+ }
+ else {
+ undoStack[stackPtr] = new TextareaState(panels);
+ undoStack[--stackPtr].restore();
+
+ if (callback) {
+ callback();
+ }
+ }
+ }
+
+ mode = "none";
+ panels.input.focus();
+ refreshState();
+ };
+
+ // Redo an action.
+ this.redo = function () {
+
+ if (undoObj.canRedo()) {
+
+ undoStack[++stackPtr].restore();
+
+ if (callback) {
+ callback();
+ }
+ }
+
+ mode = "none";
+ panels.input.focus();
+ refreshState();
+ };
+
+ // Push the input area state to the stack.
+ var saveState = function () {
+ var currState = inputStateObj || new TextareaState(panels);
+
+ if (!currState) {
+ return false;
+ }
+ if (mode == "moving") {
+ if (!lastState) {
+ lastState = currState;
+ }
+ return;
+ }
+ if (lastState) {
+ if (undoStack[stackPtr - 1].text != lastState.text) {
+ undoStack[stackPtr++] = lastState;
+ }
+ lastState = null;
+ }
+ undoStack[stackPtr++] = currState;
+ undoStack[stackPtr + 1] = null;
+ if (callback) {
+ callback();
+ }
+ };
+
+ var handleCtrlYZ = function (event) {
+
+ var handled = false;
+
+ if (event.ctrlKey || event.metaKey) {
+
+ // IE and Opera do not support charCode.
+ var keyCode = event.charCode || event.keyCode;
+ var keyCodeChar = String.fromCharCode(keyCode);
+
+ switch (keyCodeChar) {
+
+ case "y":
+ undoObj.redo();
+ handled = true;
+ break;
+
+ case "z":
+ if (!event.shiftKey) {
+ undoObj.undo();
+ }
+ else {
+ undoObj.redo();
+ }
+ handled = true;
+ break;
+ }
+ }
+
+ if (handled) {
+ if (event.preventDefault) {
+ event.preventDefault();
+ }
+ if (window.event) {
+ window.event.returnValue = false;
+ }
+ return;
+ }
+ };
+
+ // Set the mode depending on what is going on in the input area.
+ var handleModeChange = function (event) {
+
+ if (!event.ctrlKey && !event.metaKey) {
+
+ var keyCode = event.keyCode;
+
+ if ((keyCode >= 33 && keyCode <= 40) || (keyCode >= 63232 && keyCode <= 63235)) {
+ // 33 - 40: page up/dn and arrow keys
+ // 63232 - 63235: page up/dn and arrow keys on safari
+ setMode("moving");
+ }
+ else if (keyCode == 8 || keyCode == 46 || keyCode == 127) {
+ // 8: backspace
+ // 46: delete
+ // 127: delete
+ setMode("deleting");
+ }
+ else if (keyCode == 13) {
+ // 13: Enter
+ setMode("newlines");
+ }
+ else if (keyCode == 27) {
+ // 27: escape
+ setMode("escape");
+ }
+ else if ((keyCode < 16 || keyCode > 20) && keyCode != 91) {
+ // 16-20 are shift, etc.
+ // 91: left window key
+ // I think this might be a little messed up since there are
+ // a lot of nonprinting keys above 20.
+ setMode("typing");
+ }
+ }
+ };
+
+ var setEventHandlers = function () {
+ util.addEvent(panels.input, "keypress", function (event) {
+ // keyCode 89: y
+ // keyCode 90: z
+ if ((event.ctrlKey || event.metaKey) && (event.keyCode == 89 || event.keyCode == 90)) {
+ event.preventDefault();
+ }
+ });
+
+ var handlePaste = function () {
+ if (uaSniffed.isIE || (inputStateObj && inputStateObj.text != panels.input.value)) {
+ if (timer == undefined) {
+ mode = "paste";
+ saveState();
+ refreshState();
+ }
+ }
+ };
+
+ util.addEvent(panels.input, "keydown", handleCtrlYZ);
+ util.addEvent(panels.input, "keydown", handleModeChange);
+ util.addEvent(panels.input, "mousedown", function () {
+ setMode("moving");
+ });
+
+ panels.input.onpaste = handlePaste;
+ panels.input.ondrop = handlePaste;
+ };
+
+ var init = function () {
+ setEventHandlers();
+ refreshState(true);
+ saveState();
+ };
+
+ init();
+ }
+
+ // end of UndoManager
+
+ // The input textarea state/contents.
+ // This is used to implement undo/redo by the undo manager.
+ function TextareaState(panels, isInitialState) {
+
+ // Aliases
+ var stateObj = this;
+ var inputArea = panels.input;
+ this.init = function () {
+ if (!util.isVisible(inputArea)) {
+ return;
+ }
+ if (!isInitialState && doc.activeElement && doc.activeElement !== inputArea) { // this happens when tabbing out of the input box
+ return;
+ }
+
+ this.setInputAreaSelectionStartEnd();
+ this.scrollTop = inputArea.scrollTop;
+ if (!this.text && inputArea.selectionStart || inputArea.selectionStart === 0) {
+ this.text = inputArea.value;
+ }
+
+ }
+
+ // Sets the selected text in the input box after we've performed an
+ // operation.
+ this.setInputAreaSelection = function () {
+
+ if (!util.isVisible(inputArea)) {
+ return;
+ }
+
+ if (inputArea.selectionStart !== undefined && !uaSniffed.isOpera) {
+
+ inputArea.focus();
+ inputArea.selectionStart = stateObj.start;
+ inputArea.selectionEnd = stateObj.end;
+ inputArea.scrollTop = stateObj.scrollTop;
+ }
+ else if (doc.selection) {
+
+ if (doc.activeElement && doc.activeElement !== inputArea) {
+ return;
+ }
+
+ inputArea.focus();
+ var range = inputArea.createTextRange();
+ range.moveStart("character", -inputArea.value.length);
+ range.moveEnd("character", -inputArea.value.length);
+ range.moveEnd("character", stateObj.end);
+ range.moveStart("character", stateObj.start);
+ range.select();
+ }
+ };
+
+ this.setInputAreaSelectionStartEnd = function () {
+
+ if (!panels.ieCachedRange && (inputArea.selectionStart || inputArea.selectionStart === 0)) {
+
+ stateObj.start = inputArea.selectionStart;
+ stateObj.end = inputArea.selectionEnd;
+ }
+ else if (doc.selection) {
+
+ stateObj.text = util.fixEolChars(inputArea.value);
+
+ // IE loses the selection in the textarea when buttons are
+ // clicked. On IE we cache the selection. Here, if something is cached,
+ // we take it.
+ var range = panels.ieCachedRange || doc.selection.createRange();
+
+ var fixedRange = util.fixEolChars(range.text);
+ var marker = "\x07";
+ var markedRange = marker + fixedRange + marker;
+ range.text = markedRange;
+ var inputText = util.fixEolChars(inputArea.value);
+
+ range.moveStart("character", -markedRange.length);
+ range.text = fixedRange;
+
+ stateObj.start = inputText.indexOf(marker);
+ stateObj.end = inputText.lastIndexOf(marker) - marker.length;
+
+ var len = stateObj.text.length - util.fixEolChars(inputArea.value).length;
+
+ if (len) {
+ range.moveStart("character", -fixedRange.length);
+ while (len--) {
+ fixedRange += "\n";
+ stateObj.end += 1;
+ }
+ range.text = fixedRange;
+ }
+
+ if (panels.ieCachedRange)
+ stateObj.scrollTop = panels.ieCachedScrollTop; // this is set alongside with ieCachedRange
+
+ panels.ieCachedRange = null;
+
+ this.setInputAreaSelection();
+ }
+ };
+
+ // Restore this state into the input area.
+ this.restore = function () {
+
+ if (stateObj.text != undefined && stateObj.text != inputArea.value) {
+ inputArea.value = stateObj.text;
+ }
+ this.setInputAreaSelection();
+ inputArea.scrollTop = stateObj.scrollTop;
+ };
+
+ // Gets a collection of HTML chunks from the inptut textarea.
+ this.getChunks = function () {
+
+ var chunk = new Chunks();
+ chunk.before = util.fixEolChars(stateObj.text.substring(0, stateObj.start));
+ chunk.startTag = "";
+ chunk.selection = util.fixEolChars(stateObj.text.substring(stateObj.start, stateObj.end));
+ chunk.endTag = "";
+ chunk.after = util.fixEolChars(stateObj.text.substring(stateObj.end));
+ chunk.scrollTop = stateObj.scrollTop;
+
+ return chunk;
+ };
+
+ // Sets the TextareaState properties given a chunk of markdown.
+ this.setChunks = function (chunk) {
+
+ chunk.before = chunk.before + chunk.startTag;
+ chunk.after = chunk.endTag + chunk.after;
+
+ this.start = chunk.before.length;
+ this.end = chunk.before.length + chunk.selection.length;
+ this.text = chunk.before + chunk.selection + chunk.after;
+ this.scrollTop = chunk.scrollTop;
+ };
+ this.init();
+ };
+
+ function PreviewManager(converter, panels, previewRefreshCallback) {
+
+ var managerObj = this;
+ var timeout;
+ var elapsedTime;
+ var oldInputText;
+ var maxDelay = 3000;
+ var startType = "delayed"; // The other legal value is "manual"
+
+ // Adds event listeners to elements
+ var setupEvents = function (inputElem, listener) {
+
+ util.addEvent(inputElem, "input", listener);
+ inputElem.onpaste = listener;
+ inputElem.ondrop = listener;
+
+ util.addEvent(inputElem, "keypress", listener);
+ util.addEvent(inputElem, "keydown", listener);
+ };
+
+ var getDocScrollTop = function () {
+
+ var result = 0;
+
+ if (window.innerHeight) {
+ result = window.pageYOffset;
+ }
+ else
+ if (doc.documentElement && doc.documentElement.scrollTop) {
+ result = doc.documentElement.scrollTop;
+ }
+ else
+ if (doc.body) {
+ result = doc.body.scrollTop;
+ }
+
+ return result;
+ };
+
+ var makePreviewHtml = function () {
+
+ // If there is no registered preview panel
+ // there is nothing to do.
+ if (!panels.preview)
+ return;
+
+
+ var text = panels.input.value;
+ if (text && text == oldInputText) {
+ return; // Input text hasn't changed.
+ }
+ else {
+ oldInputText = text;
+ }
+
+ var prevTime = new Date().getTime();
+
+ text = converter.makeHtml(text);
+
+ // Calculate the processing time of the HTML creation.
+ // It's used as the delay time in the event listener.
+ var currTime = new Date().getTime();
+ elapsedTime = currTime - prevTime;
+
+ pushPreviewHtml(text);
+ };
+
+ // setTimeout is already used. Used as an event listener.
+ var applyTimeout = function () {
+
+ if (timeout) {
+ clearTimeout(timeout);
+ timeout = undefined;
+ }
+
+ if (startType !== "manual") {
+
+ var delay = 0;
+
+ if (startType === "delayed") {
+ delay = elapsedTime;
+ }
+
+ if (delay > maxDelay) {
+ delay = maxDelay;
+ }
+ timeout = setTimeout(makePreviewHtml, delay);
+ }
+ };
+
+ var getScaleFactor = function (panel) {
+ if (panel.scrollHeight <= panel.clientHeight) {
+ return 1;
+ }
+ return panel.scrollTop / (panel.scrollHeight - panel.clientHeight);
+ };
+
+ var setPanelScrollTops = function () {
+ if (panels.preview) {
+ panels.preview.scrollTop = (panels.preview.scrollHeight - panels.preview.clientHeight) * getScaleFactor(panels.preview);
+ }
+ };
+
+ this.refresh = function (requiresRefresh) {
+
+ if (requiresRefresh) {
+ oldInputText = "";
+ makePreviewHtml();
+ }
+ else {
+ applyTimeout();
+ }
+ };
+
+ this.processingTime = function () {
+ return elapsedTime;
+ };
+
+ var isFirstTimeFilled = true;
+
+ // IE doesn't let you use innerHTML if the element is contained somewhere in a table
+ // (which is the case for inline editing) -- in that case, detach the element, set the
+ // value, and reattach. Yes, that *is* ridiculous.
+ var ieSafePreviewSet = function (text) {
+ var preview = panels.preview;
+ var parent = preview.parentNode;
+ var sibling = preview.nextSibling;
+ parent.removeChild(preview);
+ preview.innerHTML = text;
+ if (!sibling)
+ parent.appendChild(preview);
+ else
+ parent.insertBefore(preview, sibling);
+ }
+
+ var nonSuckyBrowserPreviewSet = function (text) {
+ panels.preview.innerHTML = text;
+ }
+
+ var previewSetter;
+
+ var previewSet = function (text) {
+ if (previewSetter)
+ return previewSetter(text);
+
+ try {
+ nonSuckyBrowserPreviewSet(text);
+ previewSetter = nonSuckyBrowserPreviewSet;
+ } catch (e) {
+ previewSetter = ieSafePreviewSet;
+ previewSetter(text);
+ }
+ };
+
+ var pushPreviewHtml = function (text) {
+
+ var emptyTop = position.getTop(panels.input) - getDocScrollTop();
+
+ if (panels.preview) {
+ previewSet(text);
+ previewRefreshCallback();
+ }
+
+ setPanelScrollTops();
+
+ if (isFirstTimeFilled) {
+ isFirstTimeFilled = false;
+ return;
+ }
+
+ var fullTop = position.getTop(panels.input) - getDocScrollTop();
+
+ if (uaSniffed.isIE) {
+ setTimeout(function () {
+ window.scrollBy(0, fullTop - emptyTop);
+ }, 0);
+ }
+ else {
+ window.scrollBy(0, fullTop - emptyTop);
+ }
+ };
+
+ var init = function () {
+
+ setupEvents(panels.input, applyTimeout);
+ makePreviewHtml();
+
+ if (panels.preview) {
+ panels.preview.scrollTop = 0;
+ }
+ };
+
+ init();
+ };
+
+ // Creates the background behind the hyperlink text entry box.
+ // And download dialog
+ // Most of this has been moved to CSS but the div creation and
+ // browser-specific hacks remain here.
+ ui.createBackground = function () {
+
+ var background = doc.createElement("div"),
+ style = background.style;
+
+ background.className = "wmd-prompt-background";
+
+ style.position = "absolute";
+ style.top = "0";
+
+ style.zIndex = "1000";
+
+ if (uaSniffed.isIE) {
+ style.filter = "alpha(opacity=50)";
+ }
+ else {
+ style.opacity = "0.5";
+ }
+
+ var pageSize = position.getPageSize();
+ style.height = pageSize[1] + "px";
+
+ if (uaSniffed.isIE) {
+ style.left = doc.documentElement.scrollLeft;
+ style.width = doc.documentElement.clientWidth;
+ }
+ else {
+ style.left = "0";
+ style.width = "100%";
+ }
+
+ doc.body.appendChild(background);
+ return background;
+ };
+
+ // This simulates a modal dialog box and asks for the URL when you
+ // click the hyperlink or image buttons.
+ //
+ // text: The html for the input box.
+ // defaultInputText: The default value that appears in the input box.
+ // callback: The function which is executed when the prompt is dismissed, either via OK or Cancel.
+ // It receives a single argument; either the entered text (if OK was chosen) or null (if Cancel
+ // was chosen).
+ ui.prompt = function (text, defaultInputText, callback) {
+
+ // These variables need to be declared at this level since they are used
+ // in multiple functions.
+ var dialog; // The dialog box.
+ var input; // The text box where you enter the hyperlink.
+
+
+ if (defaultInputText === undefined) {
+ defaultInputText = "";
+ }
+
+ // Used as a keydown event handler. Esc dismisses the prompt.
+ // Key code 27 is ESC.
+ var checkEscape = function (key) {
+ var code = (key.charCode || key.keyCode);
+ if (code === 27) {
+ close(true);
+ }
+ };
+
+ // Dismisses the hyperlink input box.
+ // isCancel is true if we don't care about the input text.
+ // isCancel is false if we are going to keep the text.
+ var close = function (isCancel) {
+ util.removeEvent(doc.body, "keydown", checkEscape);
+ var text = input.value;
+
+ if (isCancel) {
+ text = null;
+ }
+ else {
+ // Fixes common pasting errors.
+ text = text.replace(/^http:\/\/(https?|ftp):\/\//, '$1://');
+ if (!/^(?:https?|ftp):\/\//.test(text))
+ text = 'http://' + text;
+ }
+
+ dialog.parentNode.removeChild(dialog);
+
+ callback(text);
+ return false;
+ };
+
+
+
+ // Create the text input box form/window.
+ var createDialog = function () {
+
+ // The main dialog box.
+ dialog = doc.createElement("div");
+ dialog.className = "wmd-prompt-dialog";
+ dialog.style.padding = "10px;";
+ dialog.style.position = "fixed";
+ dialog.style.width = "400px";
+ dialog.style.zIndex = "1001";
+
+ // The dialog text.
+ var question = doc.createElement("div");
+ question.innerHTML = text;
+ question.style.padding = "5px";
+ dialog.appendChild(question);
+
+ // The web form container for the text box and buttons.
+ var form = doc.createElement("form"),
+ style = form.style;
+ form.onsubmit = function () { return close(false); };
+ style.padding = "0";
+ style.margin = "0";
+ style.cssFloat = "left";
+ style.width = "100%";
+ style.textAlign = "center";
+ style.position = "relative";
+ dialog.appendChild(form);
+
+ // The input text box
+ input = doc.createElement("input");
+ input.type = "text";
+ input.value = defaultInputText;
+ style = input.style;
+ style.display = "block";
+ style.width = "80%";
+ style.marginLeft = style.marginRight = "auto";
+ form.appendChild(input);
+
+ // The ok button
+ var okButton = doc.createElement("input");
+ okButton.type = "button";
+ okButton.onclick = function () { return close(false); };
+ okButton.value = "OK";
+ style = okButton.style;
+ style.margin = "10px";
+ style.display = "inline";
+ style.width = "7em";
+
+
+ // The cancel button
+ var cancelButton = doc.createElement("input");
+ cancelButton.type = "button";
+ cancelButton.onclick = function () { return close(true); };
+ cancelButton.value = "Cancel";
+ style = cancelButton.style;
+ style.margin = "10px";
+ style.display = "inline";
+ style.width = "7em";
+
+ form.appendChild(okButton);
+ form.appendChild(cancelButton);
+
+ util.addEvent(doc.body, "keydown", checkEscape);
+ dialog.style.top = "50%";
+ dialog.style.left = "50%";
+ dialog.style.display = "block";
+ if (uaSniffed.isIE_5or6) {
+ dialog.style.position = "absolute";
+ dialog.style.top = doc.documentElement.scrollTop + 200 + "px";
+ dialog.style.left = "50%";
+ }
+ doc.body.appendChild(dialog);
+
+ // This has to be done AFTER adding the dialog to the form if you
+ // want it to be centered.
+ dialog.style.marginTop = -(position.getHeight(dialog) / 2) + "px";
+ dialog.style.marginLeft = -(position.getWidth(dialog) / 2) + "px";
+
+ };
+
+ // Why is this in a zero-length timeout?
+ // Is it working around a browser bug?
+ setTimeout(function () {
+
+ createDialog();
+
+ var defTextLen = defaultInputText.length;
+ if (input.selectionStart !== undefined) {
+ input.selectionStart = 0;
+ input.selectionEnd = defTextLen;
+ }
+ else if (input.createTextRange) {
+ var range = input.createTextRange();
+ range.collapse(false);
+ range.moveStart("character", -defTextLen);
+ range.moveEnd("character", defTextLen);
+ range.select();
+ }
+
+ input.focus();
+ }, 0);
+ };
+
+ function UIManager(postfix, panels, undoManager, previewManager, commandManager, helpOptions) {
+
+ var inputBox = panels.input,
+ buttons = {}; // buttons.undo, buttons.link, etc. The actual DOM elements.
+
+ makeSpritedButtonRow();
+
+ var keyEvent = "keydown";
+ if (uaSniffed.isOpera) {
+ keyEvent = "keypress";
+ }
+
+ util.addEvent(inputBox, keyEvent, function (key) {
+
+ // Check to see if we have a button key and, if so execute the callback.
+ if ((key.ctrlKey || key.metaKey) && !key.altKey && !key.shiftKey) {
+
+ var keyCode = key.charCode || key.keyCode;
+ var keyCodeStr = String.fromCharCode(keyCode).toLowerCase();
+
+ switch (keyCodeStr) {
+ case "b":
+ doClick(buttons.bold);
+ break;
+ case "i":
+ doClick(buttons.italic);
+ break;
+ case "l":
+ doClick(buttons.link);
+ break;
+ case "q":
+ doClick(buttons.quote);
+ break;
+ case "k":
+ doClick(buttons.code);
+ break;
+ case "g":
+ doClick(buttons.image);
+ break;
+ case "o":
+ doClick(buttons.olist);
+ break;
+ case "u":
+ doClick(buttons.ulist);
+ break;
+ case "h":
+ doClick(buttons.heading);
+ break;
+ case "r":
+ doClick(buttons.hr);
+ break;
+ case "y":
+ doClick(buttons.redo);
+ break;
+ case "z":
+ if (key.shiftKey) {
+ doClick(buttons.redo);
+ }
+ else {
+ doClick(buttons.undo);
+ }
+ break;
+ default:
+ return;
+ }
+
+
+ if (key.preventDefault) {
+ key.preventDefault();
+ }
+
+ if (window.event) {
+ window.event.returnValue = false;
+ }
+ }
+ });
+
+ // Auto-indent on shift-enter
+ util.addEvent(inputBox, "keyup", function (key) {
+ if (key.shiftKey && !key.ctrlKey && !key.metaKey) {
+ var keyCode = key.charCode || key.keyCode;
+ // Character 13 is Enter
+ if (keyCode === 13) {
+ var fakeButton = {};
+ fakeButton.textOp = bindCommand("doAutoindent");
+ doClick(fakeButton);
+ }
+ }
+ });
+
+ // special handler because IE clears the context of the textbox on ESC
+ if (uaSniffed.isIE) {
+ util.addEvent(inputBox, "keydown", function (key) {
+ var code = key.keyCode;
+ if (code === 27) {
+ return false;
+ }
+ });
+ }
+
+
+ // Perform the button's action.
+ function doClick(button) {
+
+ inputBox.focus();
+
+ if (button.textOp) {
+
+ if (undoManager) {
+ undoManager.setCommandMode();
+ }
+
+ var state = new TextareaState(panels);
+
+ if (!state) {
+ return;
+ }
+
+ var chunks = state.getChunks();
+
+ // Some commands launch a "modal" prompt dialog. Javascript
+ // can't really make a modal dialog box and the WMD code
+ // will continue to execute while the dialog is displayed.
+ // This prevents the dialog pattern I'm used to and means
+ // I can't do something like this:
+ //
+ // var link = CreateLinkDialog();
+ // makeMarkdownLink(link);
+ //
+ // Instead of this straightforward method of handling a
+ // dialog I have to pass any code which would execute
+ // after the dialog is dismissed (e.g. link creation)
+ // in a function parameter.
+ //
+ // Yes this is awkward and I think it sucks, but there's
+ // no real workaround. Only the image and link code
+ // create dialogs and require the function pointers.
+ var fixupInputArea = function () {
+
+ inputBox.focus();
+
+ if (chunks) {
+ state.setChunks(chunks);
+ }
+
+ state.restore();
+ previewManager.refresh();
+ };
+
+ var noCleanup = button.textOp(chunks, fixupInputArea);
+
+ if (!noCleanup) {
+ fixupInputArea();
+ }
+
+ }
+
+ if (button.execute) {
+ button.execute(undoManager);
+ }
+ };
+
+ function setupButton(button, isEnabled) {
+
+ var normalYShift = "0px";
+ var disabledYShift = "-20px";
+ var highlightYShift = "-40px";
+ var image = button.getElementsByTagName("span")[0];
+ if (isEnabled) {
+ image.style.backgroundPosition = button.XShift + " " + normalYShift;
+ button.onmouseover = function () {
+ image.style.backgroundPosition = this.XShift + " " + highlightYShift;
+ };
+
+ button.onmouseout = function () {
+ image.style.backgroundPosition = this.XShift + " " + normalYShift;
+ };
+
+ // IE tries to select the background image "button" text (it's
+ // implemented in a list item) so we have to cache the selection
+ // on mousedown.
+ if (uaSniffed.isIE) {
+ button.onmousedown = function () {
+ if (doc.activeElement && doc.activeElement !== panels.input) { // we're not even in the input box, so there's no selection
+ return;
+ }
+ panels.ieCachedRange = document.selection.createRange();
+ panels.ieCachedScrollTop = panels.input.scrollTop;
+ };
+ }
+
+ if (!button.isHelp) {
+ button.onclick = function () {
+ if (this.onmouseout) {
+ this.onmouseout();
+ }
+ doClick(this);
+ return false;
+ }
+ }
+ }
+ else {
+ image.style.backgroundPosition = button.XShift + " " + disabledYShift;
+ button.onmouseover = button.onmouseout = button.onclick = function () { };
+ }
+ }
+
+ function bindCommand(method) {
+ if (typeof method === "string")
+ method = commandManager[method];
+ return function () { method.apply(commandManager, arguments); }
+ }
+
+ function makeSpritedButtonRow() {
+
+ var buttonBar = panels.buttonBar;
+
+ var normalYShift = "0px";
+ var disabledYShift = "-20px";
+ var highlightYShift = "-40px";
+
+ var buttonRow = document.createElement("ul");
+ buttonRow.id = "wmd-button-row" + postfix;
+ buttonRow.className = 'wmd-button-row';
+ buttonRow = buttonBar.appendChild(buttonRow);
+ var xPosition = 0;
+ var makeButton = function (id, title, XShift, textOp) {
+ var button = document.createElement("li");
+ button.className = "wmd-button";
+ button.style.left = xPosition + "px";
+ xPosition += 25;
+ var buttonImage = document.createElement("span");
+ button.id = id + postfix;
+ button.appendChild(buttonImage);
+ button.title = title;
+ button.XShift = XShift;
+ if (textOp)
+ button.textOp = textOp;
+ setupButton(button, true);
+ buttonRow.appendChild(button);
+ return button;
+ };
+ var makeSpacer = function (num) {
+ var spacer = document.createElement("li");
+ spacer.className = "wmd-spacer wmd-spacer" + num;
+ spacer.id = "wmd-spacer" + num + postfix;
+ buttonRow.appendChild(spacer);
+ xPosition += 25;
+ }
+
+ buttons.bold = makeButton("wmd-bold-button", "Strong Ctrl+B", "0px", bindCommand("doBold"));
+ buttons.italic = makeButton("wmd-italic-button", "Emphasis Ctrl+I", "-20px", bindCommand("doItalic"));
+ makeSpacer(1);
+ buttons.link = makeButton("wmd-link-button", "Hyperlink Ctrl+L", "-40px", bindCommand(function (chunk, postProcessing) {
+ return this.doLinkOrImage(chunk, postProcessing, false);
+ }));
+ buttons.quote = makeButton("wmd-quote-button", "Blockquote Ctrl+Q", "-60px", bindCommand("doBlockquote"));
+ buttons.code = makeButton("wmd-code-button", "Code Sample Ctrl+K", "-80px", bindCommand("doCode"));
+ buttons.image = makeButton("wmd-image-button", "Image Ctrl+G", "-100px", bindCommand(function (chunk, postProcessing) {
+ return this.doLinkOrImage(chunk, postProcessing, true);
+ }));
+ makeSpacer(2);
+ buttons.olist = makeButton("wmd-olist-button", "Numbered List Ctrl+O", "-120px", bindCommand(function (chunk, postProcessing) {
+ this.doList(chunk, postProcessing, true);
+ }));
+ buttons.ulist = makeButton("wmd-ulist-button", "Bulleted List Ctrl+U", "-140px", bindCommand(function (chunk, postProcessing) {
+ this.doList(chunk, postProcessing, false);
+ }));
+ buttons.heading = makeButton("wmd-heading-button", "Heading / Ctrl+H", "-160px", bindCommand("doHeading"));
+ buttons.hr = makeButton("wmd-hr-button", "Horizontal Rule
Ctrl+R", "-180px", bindCommand("doHorizontalRule"));
+ makeSpacer(3);
+ buttons.undo = makeButton("wmd-undo-button", "Undo - Ctrl+Z", "-200px", null);
+ buttons.undo.execute = function (manager) { if (manager) manager.undo(); };
+
+ var redoTitle = /win/.test(nav.platform.toLowerCase()) ?
+ "Redo - Ctrl+Y" :
+ "Redo - Ctrl+Shift+Z"; // mac and other non-Windows platforms
+
+ buttons.redo = makeButton("wmd-redo-button", redoTitle, "-220px", null);
+ buttons.redo.execute = function (manager) { if (manager) manager.redo(); };
+
+ if (helpOptions) {
+ var helpButton = document.createElement("li");
+ var helpButtonImage = document.createElement("span");
+ helpButton.appendChild(helpButtonImage);
+ helpButton.className = "wmd-button wmd-help-button";
+ helpButton.id = "wmd-help-button" + postfix;
+ helpButton.XShift = "-240px";
+ helpButton.isHelp = true;
+ helpButton.style.right = "0px";
+ helpButton.title = helpOptions.title || defaultHelpHoverTitle;
+ helpButton.onclick = helpOptions.handler;
+
+ setupButton(helpButton, true);
+ buttonRow.appendChild(helpButton);
+ buttons.help = helpButton;
+ }
+
+ setUndoRedoButtonStates();
+ }
+
+ function setUndoRedoButtonStates() {
+ if (undoManager) {
+ setupButton(buttons.undo, undoManager.canUndo());
+ setupButton(buttons.redo, undoManager.canRedo());
+ }
+ };
+
+ this.setUndoRedoButtonStates = setUndoRedoButtonStates;
+
+ }
+
+ function CommandManager(pluginHooks) {
+ this.hooks = pluginHooks;
+ }
+
+ var commandProto = CommandManager.prototype;
+
+ // The markdown symbols - 4 spaces = code, > = blockquote, etc.
+ commandProto.prefixes = "(?:\\s{4,}|\\s*>|\\s*-\\s+|\\s*\\d+\\.|=|\\+|-|_|\\*|#|\\s*\\[[^\n]]+\\]:)";
+
+ // Remove markdown symbols from the chunk selection.
+ commandProto.unwrap = function (chunk) {
+ var txt = new re("([^\\n])\\n(?!(\\n|" + this.prefixes + "))", "g");
+ chunk.selection = chunk.selection.replace(txt, "$1 $2");
+ };
+
+ commandProto.wrap = function (chunk, len) {
+ this.unwrap(chunk);
+ var regex = new re("(.{1," + len + "})( +|$\\n?)", "gm"),
+ that = this;
+
+ chunk.selection = chunk.selection.replace(regex, function (line, marked) {
+ if (new re("^" + that.prefixes, "").test(line)) {
+ return line;
+ }
+ return marked + "\n";
+ });
+
+ chunk.selection = chunk.selection.replace(/\s+$/, "");
+ };
+
+ commandProto.doBold = function (chunk, postProcessing) {
+ return this.doBorI(chunk, postProcessing, 2, "strong text");
+ };
+
+ commandProto.doItalic = function (chunk, postProcessing) {
+ return this.doBorI(chunk, postProcessing, 1, "emphasized text");
+ };
+
+ // chunk: The selected region that will be enclosed with */**
+ // nStars: 1 for italics, 2 for bold
+ // insertText: If you just click the button without highlighting text, this gets inserted
+ commandProto.doBorI = function (chunk, postProcessing, nStars, insertText) {
+
+ // Get rid of whitespace and fixup newlines.
+ chunk.trimWhitespace();
+ chunk.selection = chunk.selection.replace(/\n{2,}/g, "\n");
+
+ // Look for stars before and after. Is the chunk already marked up?
+ // note that these regex matches cannot fail
+ var starsBefore = /(\**$)/.exec(chunk.before)[0];
+ var starsAfter = /(^\**)/.exec(chunk.after)[0];
+
+ var prevStars = Math.min(starsBefore.length, starsAfter.length);
+
+ // Remove stars if we have to since the button acts as a toggle.
+ if ((prevStars >= nStars) && (prevStars != 2 || nStars != 1)) {
+ chunk.before = chunk.before.replace(re("[*]{" + nStars + "}$", ""), "");
+ chunk.after = chunk.after.replace(re("^[*]{" + nStars + "}", ""), "");
+ }
+ else if (!chunk.selection && starsAfter) {
+ // It's not really clear why this code is necessary. It just moves
+ // some arbitrary stuff around.
+ chunk.after = chunk.after.replace(/^([*_]*)/, "");
+ chunk.before = chunk.before.replace(/(\s?)$/, "");
+ var whitespace = re.$1;
+ chunk.before = chunk.before + starsAfter + whitespace;
+ }
+ else {
+
+ // In most cases, if you don't have any selected text and click the button
+ // you'll get a selected, marked up region with the default text inserted.
+ if (!chunk.selection && !starsAfter) {
+ chunk.selection = insertText;
+ }
+
+ // Add the true markup.
+ var markup = nStars <= 1 ? "*" : "**"; // shouldn't the test be = ?
+ chunk.before = chunk.before + markup;
+ chunk.after = markup + chunk.after;
+ }
+
+ return;
+ };
+
+ commandProto.stripLinkDefs = function (text, defsToAdd) {
+
+ text = text.replace(/^[ ]{0,3}\[(\d+)\]:[ \t]*\n?[ \t]*(\S+?)>?[ \t]*\n?[ \t]*(?:(\n*)["(](.+?)[")][ \t]*)?(?:\n+|$)/gm,
+ function (totalMatch, id, link, newlines, title) {
+ defsToAdd[id] = totalMatch.replace(/\s*$/, "");
+ if (newlines) {
+ // Strip the title and return that separately.
+ defsToAdd[id] = totalMatch.replace(/["(](.+?)[")]$/, "");
+ return newlines + title;
+ }
+ return "";
+ });
+
+ return text;
+ };
+
+ commandProto.addLinkDef = function (chunk, linkDef) {
+
+ var refNumber = 0; // The current reference number
+ var defsToAdd = {}; //
+ // Start with a clean slate by removing all previous link definitions.
+ chunk.before = this.stripLinkDefs(chunk.before, defsToAdd);
+ chunk.selection = this.stripLinkDefs(chunk.selection, defsToAdd);
+ chunk.after = this.stripLinkDefs(chunk.after, defsToAdd);
+
+ var defs = "";
+ var regex = /(\[)((?:\[[^\]]*\]|[^\[\]])*)(\][ ]?(?:\n[ ]*)?\[)(\d+)(\])/g;
+
+ var addDefNumber = function (def) {
+ refNumber++;
+ def = def.replace(/^[ ]{0,3}\[(\d+)\]:/, " [" + refNumber + "]:");
+ defs += "\n" + def;
+ };
+
+ // note that
+ // a) the recursive call to getLink cannot go infinite, because by definition
+ // of regex, inner is always a proper substring of wholeMatch, and
+ // b) more than one level of nesting is neither supported by the regex
+ // nor making a lot of sense (the only use case for nesting is a linked image)
+ var getLink = function (wholeMatch, before, inner, afterInner, id, end) {
+ inner = inner.replace(regex, getLink);
+ if (defsToAdd[id]) {
+ addDefNumber(defsToAdd[id]);
+ return before + inner + afterInner + refNumber + end;
+ }
+ return wholeMatch;
+ };
+
+ chunk.before = chunk.before.replace(regex, getLink);
+
+ if (linkDef) {
+ addDefNumber(linkDef);
+ }
+ else {
+ chunk.selection = chunk.selection.replace(regex, getLink);
+ }
+
+ var refOut = refNumber;
+
+ chunk.after = chunk.after.replace(regex, getLink);
+
+ if (chunk.after) {
+ chunk.after = chunk.after.replace(/\n*$/, "");
+ }
+ if (!chunk.after) {
+ chunk.selection = chunk.selection.replace(/\n*$/, "");
+ }
+
+ chunk.after += "\n\n" + defs;
+
+ return refOut;
+ };
+
+ // takes the line as entered into the add link/as image dialog and makes
+ // sure the URL and the optinal title are "nice".
+ function properlyEncoded(linkdef) {
+ return linkdef.replace(/^\s*(.*?)(?:\s+"(.+)")?\s*$/, function (wholematch, link, title) {
+ link = link.replace(/\?.*$/, function (querypart) {
+ return querypart.replace(/\+/g, " "); // in the query string, a plus and a space are identical
+ });
+ link = decodeURIComponent(link); // unencode first, to prevent double encoding
+ link = encodeURI(link).replace(/'/g, '%27').replace(/\(/g, '%28').replace(/\)/g, '%29');
+ link = link.replace(/\?.*$/, function (querypart) {
+ return querypart.replace(/\+/g, "%2b"); // since we replaced plus with spaces in the query part, all pluses that now appear where originally encoded
+ });
+ if (title) {
+ title = title.trim ? title.trim() : title.replace(/^\s*/, "").replace(/\s*$/, "");
+ title = $.trim(title).replace(/"/g, "quot;").replace(/\(/g, "(").replace(/\)/g, ")").replace(//g, ">");
+ }
+ return title ? link + ' "' + title + '"' : link;
+ });
+ }
+
+ commandProto.doLinkOrImage = function (chunk, postProcessing, isImage) {
+
+ chunk.trimWhitespace();
+ chunk.findTags(/\s*!?\[/, /\][ ]?(?:\n[ ]*)?(\[.*?\])?/);
+ var background;
+
+ if (chunk.endTag.length > 1 && chunk.startTag.length > 0) {
+
+ chunk.startTag = chunk.startTag.replace(/!?\[/, "");
+ chunk.endTag = "";
+ this.addLinkDef(chunk, null);
+
+ }
+ else {
+
+ // We're moving start and end tag back into the selection, since (as we're in the else block) we're not
+ // *removing* a link, but *adding* one, so whatever findTags() found is now back to being part of the
+ // link text. linkEnteredCallback takes care of escaping any brackets.
+ chunk.selection = chunk.startTag + chunk.selection + chunk.endTag;
+ chunk.startTag = chunk.endTag = "";
+
+ if (/\n\n/.test(chunk.selection)) {
+ this.addLinkDef(chunk, null);
+ return;
+ }
+ var that = this;
+ // The function to be executed when you enter a link and press OK or Cancel.
+ // Marks up the link and adds the ref.
+ var linkEnteredCallback = function (link) {
+
+ background.parentNode.removeChild(background);
+
+ if (link !== null) {
+ // ( $1
+ // [^\\] anything that's not a backslash
+ // (?:\\\\)* an even number (this includes zero) of backslashes
+ // )
+ // (?= followed by
+ // [[\]] an opening or closing bracket
+ // )
+ //
+ // In other words, a non-escaped bracket. These have to be escaped now to make sure they
+ // don't count as the end of the link or similar.
+ // Note that the actual bracket has to be a lookahead, because (in case of to subsequent brackets),
+ // the bracket in one match may be the "not a backslash" character in the next match, so it
+ // should not be consumed by the first match.
+ // The "prepend a space and finally remove it" steps makes sure there is a "not a backslash" at the
+ // start of the string, so this also works if the selection begins with a bracket. We cannot solve
+ // this by anchoring with ^, because in the case that the selection starts with two brackets, this
+ // would mean a zero-width match at the start. Since zero-width matches advance the string position,
+ // the first bracket could then not act as the "not a backslash" for the second.
+ chunk.selection = (" " + chunk.selection).replace(/([^\\](?:\\\\)*)(?=[[\]])/g, "$1\\").substr(1);
+
+ var linkDef = " [999]: " + properlyEncoded(link);
+
+ var num = that.addLinkDef(chunk, linkDef);
+ chunk.startTag = isImage ? "![" : "[";
+ chunk.endTag = "][" + num + "]";
+
+ if (!chunk.selection) {
+ if (isImage) {
+ chunk.selection = "enter image description here";
+ }
+ else {
+ chunk.selection = "enter link description here";
+ }
+ }
+ }
+ postProcessing();
+ };
+
+ background = ui.createBackground();
+
+ if (isImage) {
+ if (!this.hooks.insertImageDialog(linkEnteredCallback))
+ ui.prompt(imageDialogText, imageDefaultText, linkEnteredCallback);
+ }
+ else {
+ ui.prompt(linkDialogText, linkDefaultText, linkEnteredCallback);
+ }
+ return true;
+ }
+ };
+
+ // When making a list, hitting shift-enter will put your cursor on the next line
+ // at the current indent level.
+ commandProto.doAutoindent = function (chunk, postProcessing) {
+
+ var commandMgr = this,
+ fakeSelection = false;
+
+ chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]*\n$/, "\n\n");
+ chunk.before = chunk.before.replace(/(\n|^)[ ]{0,3}>[ \t]*\n$/, "\n\n");
+ chunk.before = chunk.before.replace(/(\n|^)[ \t]+\n$/, "\n\n");
+
+ // There's no selection, end the cursor wasn't at the end of the line:
+ // The user wants to split the current list item / code line / blockquote line
+ // (for the latter it doesn't really matter) in two. Temporarily select the
+ // (rest of the) line to achieve this.
+ if (!chunk.selection && !/^[ \t]*(?:\n|$)/.test(chunk.after)) {
+ chunk.after = chunk.after.replace(/^[^\n]*/, function (wholeMatch) {
+ chunk.selection = wholeMatch;
+ return "";
+ });
+ fakeSelection = true;
+ }
+
+ if (/(\n|^)[ ]{0,3}([*+-]|\d+[.])[ \t]+.*\n$/.test(chunk.before)) {
+ if (commandMgr.doList) {
+ commandMgr.doList(chunk);
+ }
+ }
+ if (/(\n|^)[ ]{0,3}>[ \t]+.*\n$/.test(chunk.before)) {
+ if (commandMgr.doBlockquote) {
+ commandMgr.doBlockquote(chunk);
+ }
+ }
+ if (/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)) {
+ if (commandMgr.doCode) {
+ commandMgr.doCode(chunk);
+ }
+ }
+
+ if (fakeSelection) {
+ chunk.after = chunk.selection + chunk.after;
+ chunk.selection = "";
+ }
+ };
+
+ commandProto.doBlockquote = function (chunk, postProcessing) {
+
+ chunk.selection = chunk.selection.replace(/^(\n*)([^\r]+?)(\n*)$/,
+ function (totalMatch, newlinesBefore, text, newlinesAfter) {
+ chunk.before += newlinesBefore;
+ chunk.after = newlinesAfter + chunk.after;
+ return text;
+ });
+
+ chunk.before = chunk.before.replace(/(>[ \t]*)$/,
+ function (totalMatch, blankLine) {
+ chunk.selection = blankLine + chunk.selection;
+ return "";
+ });
+
+ chunk.selection = chunk.selection.replace(/^(\s|>)+$/, "");
+ chunk.selection = chunk.selection || "Blockquote";
+
+ // The original code uses a regular expression to find out how much of the
+ // text *directly before* the selection already was a blockquote:
+
+ /*
+ if (chunk.before) {
+ chunk.before = chunk.before.replace(/\n?$/, "\n");
+ }
+ chunk.before = chunk.before.replace(/(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*$)/,
+ function (totalMatch) {
+ chunk.startTag = totalMatch;
+ return "";
+ });
+ */
+
+ // This comes down to:
+ // Go backwards as many lines a possible, such that each line
+ // a) starts with ">", or
+ // b) is almost empty, except for whitespace, or
+ // c) is preceeded by an unbroken chain of non-empty lines
+ // leading up to a line that starts with ">" and at least one more character
+ // and in addition
+ // d) at least one line fulfills a)
+ //
+ // Since this is essentially a backwards-moving regex, it's susceptible to
+ // catstrophic backtracking and can cause the browser to hang;
+ // see e.g. http://meta.stackoverflow.com/questions/9807.
+ //
+ // Hence we replaced this by a simple state machine that just goes through the
+ // lines and checks for a), b), and c).
+
+ var match = "",
+ leftOver = "",
+ line;
+ if (chunk.before) {
+ var lines = chunk.before.replace(/\n$/, "").split("\n");
+ var inChain = false;
+ for (var i = 0; i < lines.length; i++) {
+ var good = false;
+ line = lines[i];
+ inChain = inChain && line.length > 0; // c) any non-empty line continues the chain
+ if (/^>/.test(line)) { // a)
+ good = true;
+ if (!inChain && line.length > 1) // c) any line that starts with ">" and has at least one more character starts the chain
+ inChain = true;
+ } else if (/^[ \t]*$/.test(line)) { // b)
+ good = true;
+ } else {
+ good = inChain; // c) the line is not empty and does not start with ">", so it matches if and only if we're in the chain
+ }
+ if (good) {
+ match += line + "\n";
+ } else {
+ leftOver += match + line;
+ match = "\n";
+ }
+ }
+ if (!/(^|\n)>/.test(match)) { // d)
+ leftOver += match;
+ match = "";
+ }
+ }
+
+ chunk.startTag = match;
+ chunk.before = leftOver;
+
+ // end of change
+
+ if (chunk.after) {
+ chunk.after = chunk.after.replace(/^\n?/, "\n");
+ }
+
+ chunk.after = chunk.after.replace(/^(((\n|^)(\n[ \t]*)*>(.+\n)*.*)+(\n[ \t]*)*)/,
+ function (totalMatch) {
+ chunk.endTag = totalMatch;
+ return "";
+ }
+ );
+
+ var replaceBlanksInTags = function (useBracket) {
+
+ var replacement = useBracket ? "> " : "";
+
+ if (chunk.startTag) {
+ chunk.startTag = chunk.startTag.replace(/\n((>|\s)*)\n$/,
+ function (totalMatch, markdown) {
+ return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
+ });
+ }
+ if (chunk.endTag) {
+ chunk.endTag = chunk.endTag.replace(/^\n((>|\s)*)\n/,
+ function (totalMatch, markdown) {
+ return "\n" + markdown.replace(/^[ ]{0,3}>?[ \t]*$/gm, replacement) + "\n";
+ });
+ }
+ };
+
+ if (/^(?![ ]{0,3}>)/m.test(chunk.selection)) {
+ this.wrap(chunk, SETTINGS.lineLength - 2);
+ chunk.selection = chunk.selection.replace(/^/gm, "> ");
+ replaceBlanksInTags(true);
+ chunk.skipLines();
+ } else {
+ chunk.selection = chunk.selection.replace(/^[ ]{0,3}> ?/gm, "");
+ this.unwrap(chunk);
+ replaceBlanksInTags(false);
+
+ if (!/^(\n|^)[ ]{0,3}>/.test(chunk.selection) && chunk.startTag) {
+ chunk.startTag = chunk.startTag.replace(/\n{0,2}$/, "\n\n");
+ }
+
+ if (!/(\n|^)[ ]{0,3}>.*$/.test(chunk.selection) && chunk.endTag) {
+ chunk.endTag = chunk.endTag.replace(/^\n{0,2}/, "\n\n");
+ }
+ }
+
+ chunk.selection = this.hooks.postBlockquoteCreation(chunk.selection);
+
+ if (!/\n/.test(chunk.selection)) {
+ chunk.selection = chunk.selection.replace(/^(> *)/,
+ function (wholeMatch, blanks) {
+ chunk.startTag += blanks;
+ return "";
+ });
+ }
+ };
+
+ commandProto.doCode = function (chunk, postProcessing) {
+
+ var hasTextBefore = /\S[ ]*$/.test(chunk.before);
+ var hasTextAfter = /^[ ]*\S/.test(chunk.after);
+
+ // Use 'four space' markdown if the selection is on its own
+ // line or is multiline.
+ if ((!hasTextAfter && !hasTextBefore) || /\n/.test(chunk.selection)) {
+
+ chunk.before = chunk.before.replace(/[ ]{4}$/,
+ function (totalMatch) {
+ chunk.selection = totalMatch + chunk.selection;
+ return "";
+ });
+
+ var nLinesBack = 1;
+ var nLinesForward = 1;
+
+ if (/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)) {
+ nLinesBack = 0;
+ }
+ if (/^\n(\t|[ ]{4,})/.test(chunk.after)) {
+ nLinesForward = 0;
+ }
+
+ chunk.skipLines(nLinesBack, nLinesForward);
+
+ if (!chunk.selection) {
+ chunk.startTag = " ";
+ chunk.selection = "enter code here";
+ }
+ else {
+ if (/^[ ]{0,3}\S/m.test(chunk.selection)) {
+ if (/\n/.test(chunk.selection))
+ chunk.selection = chunk.selection.replace(/^/gm, " ");
+ else // if it's not multiline, do not select the four added spaces; this is more consistent with the doList behavior
+ chunk.before += " ";
+ }
+ else {
+ chunk.selection = chunk.selection.replace(/^[ ]{4}/gm, "");
+ }
+ }
+ }
+ else {
+ // Use backticks (`) to delimit the code block.
+
+ chunk.trimWhitespace();
+ chunk.findTags(/`/, /`/);
+
+ if (!chunk.startTag && !chunk.endTag) {
+ chunk.startTag = chunk.endTag = "`";
+ if (!chunk.selection) {
+ chunk.selection = "enter code here";
+ }
+ }
+ else if (chunk.endTag && !chunk.startTag) {
+ chunk.before += chunk.endTag;
+ chunk.endTag = "";
+ }
+ else {
+ chunk.startTag = chunk.endTag = "";
+ }
+ }
+ };
+
+ commandProto.doList = function (chunk, postProcessing, isNumberedList) {
+
+ // These are identical except at the very beginning and end.
+ // Should probably use the regex extension function to make this clearer.
+ var previousItemsRegex = /(\n|^)(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*$/;
+ var nextItemsRegex = /^\n*(([ ]{0,3}([*+-]|\d+[.])[ \t]+.*)(\n.+|\n{2,}([*+-].*|\d+[.])[ \t]+.*|\n{2,}[ \t]+\S.*)*)\n*/;
+
+ // The default bullet is a dash but others are possible.
+ // This has nothing to do with the particular HTML bullet,
+ // it's just a markdown bullet.
+ var bullet = "-";
+
+ // The number in a numbered list.
+ var num = 1;
+
+ // Get the item prefix - e.g. " 1. " for a numbered list, " - " for a bulleted list.
+ var getItemPrefix = function () {
+ var prefix;
+ if (isNumberedList) {
+ prefix = " " + num + ". ";
+ num++;
+ }
+ else {
+ prefix = " " + bullet + " ";
+ }
+ return prefix;
+ };
+
+ // Fixes the prefixes of the other list items.
+ var getPrefixedItem = function (itemText) {
+
+ // The numbering flag is unset when called by autoindent.
+ if (isNumberedList === undefined) {
+ isNumberedList = /^\s*\d/.test(itemText);
+ }
+
+ // Renumber/bullet the list element.
+ itemText = itemText.replace(/^[ ]{0,3}([*+-]|\d+[.])\s/gm,
+ function (_) {
+ return getItemPrefix();
+ });
+
+ return itemText;
+ };
+
+ chunk.findTags(/(\n|^)*[ ]{0,3}([*+-]|\d+[.])\s+/, null);
+
+ if (chunk.before && !/\n$/.test(chunk.before) && !/^\n/.test(chunk.startTag)) {
+ chunk.before += chunk.startTag;
+ chunk.startTag = "";
+ }
+
+ if (chunk.startTag) {
+
+ var hasDigits = /\d+[.]/.test(chunk.startTag);
+ chunk.startTag = "";
+ chunk.selection = chunk.selection.replace(/\n[ ]{4}/g, "\n");
+ this.unwrap(chunk);
+ chunk.skipLines();
+
+ if (hasDigits) {
+ // Have to renumber the bullet points if this is a numbered list.
+ chunk.after = chunk.after.replace(nextItemsRegex, getPrefixedItem);
+ }
+ if (isNumberedList == hasDigits) {
+ return;
+ }
+ }
+
+ var nLinesUp = 1;
+
+ chunk.before = chunk.before.replace(previousItemsRegex,
+ function (itemText) {
+ if (/^\s*([*+-])/.test(itemText)) {
+ bullet = re.$1;
+ }
+ nLinesUp = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
+ return getPrefixedItem(itemText);
+ });
+
+ if (!chunk.selection) {
+ chunk.selection = "List item";
+ }
+
+ var prefix = getItemPrefix();
+
+ var nLinesDown = 1;
+
+ chunk.after = chunk.after.replace(nextItemsRegex,
+ function (itemText) {
+ nLinesDown = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
+ return getPrefixedItem(itemText);
+ });
+
+ chunk.trimWhitespace(true);
+ chunk.skipLines(nLinesUp, nLinesDown, true);
+ chunk.startTag = prefix;
+ var spaces = prefix.replace(/./g, " ");
+ this.wrap(chunk, SETTINGS.lineLength - spaces.length);
+ chunk.selection = chunk.selection.replace(/\n/g, "\n" + spaces);
+
+ };
+
+ commandProto.doHeading = function (chunk, postProcessing) {
+
+ // Remove leading/trailing whitespace and reduce internal spaces to single spaces.
+ chunk.selection = chunk.selection.replace(/\s+/g, " ");
+ chunk.selection = chunk.selection.replace(/(^\s+|\s+$)/g, "");
+
+ // If we clicked the button with no selected text, we just
+ // make a level 2 hash header around some default text.
+ if (!chunk.selection) {
+ chunk.startTag = "## ";
+ chunk.selection = "Heading";
+ chunk.endTag = " ##";
+ return;
+ }
+
+ var headerLevel = 0; // The existing header level of the selected text.
+
+ // Remove any existing hash heading markdown and save the header level.
+ chunk.findTags(/#+[ ]*/, /[ ]*#+/);
+ if (/#+/.test(chunk.startTag)) {
+ headerLevel = re.lastMatch.length;
+ }
+ chunk.startTag = chunk.endTag = "";
+
+ // Try to get the current header level by looking for - and = in the line
+ // below the selection.
+ chunk.findTags(null, /\s?(-+|=+)/);
+ if (/=+/.test(chunk.endTag)) {
+ headerLevel = 1;
+ }
+ if (/-+/.test(chunk.endTag)) {
+ headerLevel = 2;
+ }
+
+ // Skip to the next line so we can create the header markdown.
+ chunk.startTag = chunk.endTag = "";
+ chunk.skipLines(1, 1);
+
+ // We make a level 2 header if there is no current header.
+ // If there is a header level, we substract one from the header level.
+ // If it's already a level 1 header, it's removed.
+ var headerLevelToCreate = headerLevel == 0 ? 2 : headerLevel - 1;
+
+ if (headerLevelToCreate > 0) {
+
+ // The button only creates level 1 and 2 underline headers.
+ // Why not have it iterate over hash header levels? Wouldn't that be easier and cleaner?
+ var headerChar = headerLevelToCreate >= 2 ? "-" : "=";
+ var len = chunk.selection.length;
+ if (len > SETTINGS.lineLength) {
+ len = SETTINGS.lineLength;
+ }
+ chunk.endTag = "\n";
+ while (len--) {
+ chunk.endTag += headerChar;
+ }
+ }
+ };
+
+ commandProto.doHorizontalRule = function (chunk, postProcessing) {
+ chunk.startTag = "----------\n";
+ chunk.selection = "";
+ chunk.skipLines(2, 1, true);
+ }
+
+
+})();
\ No newline at end of file
diff --git a/pagedown/Markdown.Sanitizer.js b/pagedown/Markdown.Sanitizer.js
new file mode 100644
index 0000000..cc5826f
--- /dev/null
+++ b/pagedown/Markdown.Sanitizer.js
@@ -0,0 +1,108 @@
+(function () {
+ var output, Converter;
+ if (typeof exports === "object" && typeof require === "function") { // we're in a CommonJS (e.g. Node.js) module
+ output = exports;
+ Converter = require("./Markdown.Converter").Converter;
+ } else {
+ output = window.Markdown;
+ Converter = output.Converter;
+ }
+
+ output.getSanitizingConverter = function () {
+ var converter = new Converter();
+ converter.hooks.chain("postConversion", sanitizeHtml);
+ converter.hooks.chain("postConversion", balanceTags);
+ return converter;
+ }
+
+ function sanitizeHtml(html) {
+ return html.replace(/<[^>]*>?/gi, sanitizeTag);
+ }
+
+ // (tags that can be opened/closed) | (tags that stand alone)
+ var basic_tag_whitelist = /^(<\/?(b|blockquote|code|del|dd|dl|dt|em|h1|h2|h3|i|kbd|li|ol|p|pre|s|sup|sub|strong|strike|ul)>|<(br|hr)\s?\/?>)$/i;
+ // |
+ var a_white = /^(]+")?\s?>|<\/a>)$/i;
+
+ // ]*")?(\stitle="[^"<>]*")?\s?\/?>)$/i;
+
+ function sanitizeTag(tag) {
+ if (tag.match(basic_tag_whitelist) || tag.match(a_white) || tag.match(img_white))
+ return tag;
+ else
+ return "";
+ }
+
+ ///
+ /// attempt to balance HTML tags in the html string
+ /// by removing any unmatched opening or closing tags
+ /// IMPORTANT: we *assume* HTML has *already* been
+ /// sanitized and is safe/sane before balancing!
+ ///
+ /// adapted from CODESNIPPET: A8591DBA-D1D3-11DE-947C-BA5556D89593
+ ///
+ function balanceTags(html) {
+
+ if (html == "")
+ return "";
+
+ var re = /<\/?\w+[^>]*(\s|$|>)/g;
+ // convert everything to lower case; this makes
+ // our case insensitive comparisons easier
+ var tags = html.toLowerCase().match(re);
+
+ // no HTML tags present? nothing to do; exit now
+ var tagcount = (tags || []).length;
+ if (tagcount == 0)
+ return html;
+
+ var tagname, tag;
+ var ignoredtags = "
";
+ var match;
+ var tagpaired = [];
+ var tagremove = [];
+ var needsRemoval = false;
+
+ // loop through matched tags in forward order
+ for (var ctag = 0; ctag < tagcount; ctag++) {
+ tagname = tags[ctag].replace(/<\/?(\w+).*/, "$1");
+ // skip any already paired tags
+ // and skip tags in our ignore list; assume they're self-closed
+ if (tagpaired[ctag] || ignoredtags.search("<" + tagname + ">") > -1)
+ continue;
+
+ tag = tags[ctag];
+ match = -1;
+
+ if (!/^<\//.test(tag)) {
+ // this is an opening tag
+ // search forwards (next tags), look for closing tags
+ for (var ntag = ctag + 1; ntag < tagcount; ntag++) {
+ if (!tagpaired[ntag] && tags[ntag] == "" + tagname + ">") {
+ match = ntag;
+ break;
+ }
+ }
+ }
+
+ if (match == -1)
+ needsRemoval = tagremove[ctag] = true; // mark for removal
+ else
+ tagpaired[match] = true; // mark paired
+ }
+
+ if (!needsRemoval)
+ return html;
+
+ // delete all orphaned tags from the string
+
+ var ctag = 0;
+ html = html.replace(re, function (match) {
+ var res = tagremove[ctag] ? "" : match;
+ ctag++;
+ return res;
+ });
+ return html;
+ }
+})();
diff --git a/pagedown/markdown.min.js b/pagedown/markdown.min.js
new file mode 100644
index 0000000..9ce1d4c
--- /dev/null
+++ b/pagedown/markdown.min.js
@@ -0,0 +1,64 @@
+var Markdown;Markdown="object"===typeof exports&&"function"===typeof require?exports:{};
+(function(){function o(g){return g}function x(){return!1}function t(){}function l(){}t.prototype={chain:function(g,l){var p=this[g];if(!p)throw Error("unknown hook "+g);this[g]=p===o?l:function(g){return l(p(g))}},set:function(g,l){if(!this[g])throw Error("unknown hook "+g);this[g]=l},addNoop:function(g){this[g]=o},addFalse:function(g){this[g]=x}};Markdown.HookCollection=t;l.prototype={set:function(g,l){this["s_"+g]=l},get:function(g){return this["s_"+g]}};Markdown.Converter=function(){function g(a){return a=
+a.replace(/^[ ]{0,3}\[(.+)\]:[ \t]*\n?[ \t]*(\S+?)>?(?=\s|$)[ \t]*\n?[ \t]*((\n*)["(](.+?)[")][ \t]*)?(?:\n+)/gm,function(a,q,b,c,f,y){q=q.toLowerCase();C.set(q,d(b));if(f)return c;y&&E.set(q,y.replace(/"/g,"""));return""})}function o(a){a=a.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math|ins|del)\b[^\r]*?\n<\/\2>[ \t]*(?=\n+))/gm,p);a=a.replace(/^(<(p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|script|noscript|form|fieldset|iframe|math)\b[^\r]*?.*<\/\2>[ \t]*(?=\n+)\n)/gm,
+p);a=a.replace(/\n[ ]{0,3}((<(hr)\b([^<>])*?\/?>)[ \t]*(?=\n{2,}))/g,p);a=a.replace(/\n\n[ ]{0,3}(-]|-[^>])(?:[^-]|-[^-])*)--)>[ \t]*(?=\n{2,}))/g,p);return a=a.replace(/(?:\n\n)([ ]{0,3}(?:<([?%])[^\r]*?\2>)[ \t]*(?=\n{2,}))/g,p)}function p(a,b){var d;d=b.replace(/^\n+/,"");d=d.replace(/\n+$/g,"");return d="\n\n~K"+(I.push(d)-1)+"K\n\n"}function x(a,d){a=r(a);a=a.replace(/^[ ]{0,2}([ ]?\*[ ]?){3,}[ \t]*$/gm,"
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+a.replace(/^[ ]{0,2}([ ]?_[ ]?){3,}[ \t]*$/gm,"
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+D);a=a.replace(/(\[([^\[\]]+)\])()()()()()/g,D);a=f(a);a=a.replace(/~P/g,"://");a=d(a);a=a.replace(/([\W_]|^)(\*\*|__)(?=\S)([^\r]*?\S[\*_]*)\2([\W_]|$)/g,"$1$3$4");a=a.replace(/([\W_]|^)(\*|_)(?=\S)([^\r\*_]*?\S)\2([\W_]|$)/g,"$1$3$4");return a=a.replace(/\n/g,"
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+function(b,c,d){b=a(L(c));b=B(b);b=b.replace(/^\n+/g,"");b=b.replace(/\n+$/g,"");return"\n\n"+(""+b+"\n
")+"\n\n"+d});return b=b.replace(/~0/,"")}function M(a){a=a.replace(/(^\n+|\n+$)/g,"");return"\n\n~K"+(I.push(a)-1)+"K\n\n"}function h(b){return b=b.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,function(b,c,d,f){b=f.replace(/^([ \t]*)/g,"");b=b.replace(/[ \t]*$/g,"");b=a(b);b=b.replace(/:\/\//g,"~P");return c+""+b+"
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+a=a.replace(//g,">");return a=j(a,"*_{}[]\\",!1)}function b(a){return a=a.replace(/((^[ \t]*>[ \t]?.+\n(.+\n)*\n*)+)/gm,function(a,b){var c;c=b.replace(/^[ \t]*>[ \t]?/gm,"~0");c=c.replace(/~0/g,"");c=c.replace(/^[ \t]+$/gm,"");c=x(c);c=c.replace(/(^|\n)/g,"$1 ");c=c.replace(/(\s*[^\r]+?<\/pre>)/gm,function(a,b){var c;c=b.replace(/^ /mg,"~0");return c=c.replace(/~0/g,"")});return M("\n"+c+"\n
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