var Attacklab = Attacklab || {};
Attacklab.wmdBase = function(){
// A few handy aliases for readability.
var wmd = top.Attacklab;
var doc = top.document;
var re = top.RegExp;
var nav = top.navigator;
// Some namespaces.
wmd.Util = {};
wmd.Position = {};
wmd.Command = {};
wmd.Global = {};
var util = wmd.Util;
var position = wmd.Position;
var command = wmd.Command;
var global = wmd.Global;
// Used to work around some browser bugs where we can't use feature testing.
global.isIE = /msie/.test(nav.userAgent.toLowerCase());
global.isIE_5or6 = /msie 6/.test(nav.userAgent.toLowerCase()) || /msie 5/.test(nav.userAgent.toLowerCase());
global.isIE_7plus = global.isIE && !global.isIE_5or6;
global.isOpera = /opera/.test(nav.userAgent.toLowerCase());
global.isKonqueror = /konqueror/.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 imageDialogText = "<p style='margin-top: 0px'><b>Enter the image URL.</b></p><p>You can also add a title, which will be displayed as a tool tip.</p><p>Example:<br />http://wmd-editor.comcloud1.jpg \"Optional title\"</p>";
var linkDialogText = "<p style='margin-top: 0px'><b>Enter the web address.</b></p><p>You can also add a title, which will be displayed as a tool tip.</p><p>Example:<br />http://wmd-editor.com/ \"Optional title\"</p>";
// 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 helpLink = "http://wmd-editor.com/";
var helpHoverTitle = "WMD website";
var helpTarget = "_blank";
// -------------------------------------------------------------------
// END OF YOUR CHANGES
// -------------------------------------------------------------------
// A collection of the important regions on the page.
// Cached so we don't have to keep traversing the DOM.
wmd.PanelCollection = function(){
this.buttonBar = doc.getElementById("wmd-button-bar");
this.preview = doc.getElementById("wmd-preview");
this.output = doc.getElementById("wmd-output");
this.input = doc.getElementById("wmd-input");
};
// This PanelCollection object can't be filled until after the page
// has loaded.
wmd.panels = undefined;
// 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.
wmd.ieCachedRange = null; // cached textarea selection
wmd.ieRetardedClick = false; // flag
// 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 "$" to the end).
// The flags are unchanged.
//
// regex is a RegExp, pre and post are strings.
util.extendRegExp = function(regex, pre, post){
if (pre === null || pre === undefined)
{
pre = "";
}
if(post === null || post === undefined)
{
post = "";
}
var pattern = regex.toString();
var flags = "";
// Replace the flags with empty space and store them.
// Technically, this can match incorrect flags like "gmm".
var result = pattern.match(/\/([gim]*)$/);
if (result === null) {
flags = result[0];
}
else {
flags = "";
}
// Remove the flags and slash delimiters from the regular expression.
pattern = pattern.replace(/(^\/|\/[gim]*$)/g, "");
pattern = pre + pattern + post;
return new RegExp(pattern, flags);
}
// Sets the image for a button passed to the WMD editor.
// Returns a new element with the image attached.
// Adds several style properties to the image.
util.createImage = function(img){
var imgPath = imageDirectory + img;
var elem = doc.createElement("img");
elem.className = "wmd-button";
elem.src = imgPath;
return elem;
};
// 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.
// makeLinkMarkdown: The function which is executed when the prompt is dismissed, either via OK or Cancel
util.prompt = function(text, defaultInputText, makeLinkMarkdown){
// These variables need to be declared at this level since they are used
// in multiple functions.
var dialog; // The dialog box.
var background; // The background beind 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://http://', 'http://');
text = text.replace('http://https://', 'https://');
text = text.replace('http://ftp://', 'ftp://');
if (text.indexOf('http://') === -1 && text.indexOf('ftp://') === -1 && text.indexOf('https://') === -1) {
text = 'http://' + text;
}
}
dialog.parentNode.removeChild(dialog);
background.parentNode.removeChild(background);
makeLinkMarkdown(text);
return false;
};
// Creates the background behind the hyperlink text entry box.
// Most of this has been moved to CSS but the div creation and
// browser-specific hacks remain here.
var createBackground = function(){
background = doc.createElement("div");
background.className = "wmd-prompt-background";
style = background.style;
style.position = "absolute";
style.top = "0";
style.zIndex = "1000";
// Some versions of Konqueror don't support transparent colors
// so we make the whole window transparent.
//
// Is this necessary on modern konqueror browsers?
if (global.isKonqueror){
style.backgroundColor = "transparent";
}
else if (global.isIE){
style.filter = "alpha(opacity=50)";
}
else {
style.opacity = "0.5";
}
var pageSize = position.getPageSize();
style.height = pageSize[1] + "px";
if(global.isIE){
style.left = doc.documentElement.scrollLeft;
style.width = doc.documentElement.clientWidth;
}
else {
style.left = "0";
style.width = "100%";
}
doc.body.appendChild(background);
};
// 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");
form.onsubmit = function(){ return close(false); };
style = form.style;
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";
// The order of these buttons is different on macs.
if (/mac/.test(nav.platform.toLowerCase())) {
form.appendChild(cancelButton);
form.appendChild(okButton);
}
else {
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(global.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";
};
createBackground();
// Why is this in a zero-length timeout?
// Is it working around a browser bug?
top.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);
};
// 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];
};
// Watches the input textarea, polling at an interval and runs
// a callback function if anything has changed.
wmd.inputPoller = function(callback, interval){
var pollerObj = this;
var inputArea = wmd.panels.input;
// Stored start, end and text. Used to see if there are changes to the input.
var lastStart;
var lastEnd;
var markdown;
var killHandle; // Used to cancel monitoring on destruction.
// Checks to see if anything has changed in the textarea.
// If so, it runs the callback.
this.tick = function(){
if (!util.isVisible(inputArea)) {
return;
}
// Update the selection start and end, text.
if (inputArea.selectionStart || inputArea.selectionStart === 0) {
var start = inputArea.selectionStart;
var end = inputArea.selectionEnd;
if (start != lastStart || end != lastEnd) {
lastStart = start;
lastEnd = end;
if (markdown != inputArea.value) {
markdown = inputArea.value;
return true;
}
}
}
return false;
};
var doTickCallback = function(){
if (!util.isVisible(inputArea)) {
return;
}
// If anything has changed, call the function.
if (pollerObj.tick()) {
callback();
}
};
// Set how often we poll the textarea for changes.
var assignInterval = function(){
// previewPollInterval is set at the top of the namespace.
killHandle = top.setInterval(doTickCallback, interval);
};
this.destroy = function(){
top.clearInterval(killHandle);
};
assignInterval();
};
// Handles pushing and popping TextareaStates for undo/redo commands.
// I should rename the stack variables to list.
wmd.undoManager = function(callback){
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 poller;
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 (!global.isIE || mode != "moving") {
timer = top.setTimeout(refreshState, 1);
}
else {
inputStateObj = null;
}
};
var refreshState = function(){
inputStateObj = new wmd.TextareaState();
poller.tick();
timer = undefined;
};
this.setCommandMode = function(){
mode = "command";
saveState();
timer = top.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 wmd.TextareaState();
undoStack[--stackPtr].restore();
if (callback) {
callback();
}
}
}
mode = "none";
wmd.panels.input.focus();
refreshState();
};
// Redo an action.
this.redo = function(){
if (undoObj.canRedo()) {
undoStack[++stackPtr].restore();
if (callback) {
callback();
}
}
mode = "none";
wmd.panels.input.focus();
refreshState();
};
// Push the input area state to the stack.
var saveState = function(){
var currState = inputStateObj || new wmd.TextareaState();
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 (top.event) {
top.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(wmd.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 (global.isIE || (inputStateObj && inputStateObj.text != wmd.panels.input.value)) {
if (timer == undefined) {
mode = "paste";
saveState();
refreshState();
}
}
};
// pastePollInterval is specified at the beginning of this namespace.
poller = new wmd.inputPoller(handlePaste, pastePollInterval);
util.addEvent(wmd.panels.input, "keydown", handleCtrlYZ);
util.addEvent(wmd.panels.input, "keydown", handleModeChange);
util.addEvent(wmd.panels.input, "mousedown", function(){
setMode("moving");
});
wmd.panels.input.onpaste = handlePaste;
wmd.panels.input.ondrop = handlePaste;
};
var init = function(){
setEventHandlers();
refreshState();
saveState();
};
this.destroy = function(){
if (poller) {
poller.destroy();
}
};
init();
};
// I think my understanding of how the buttons and callbacks are stored in the array is incomplete.
wmd.editor = function(previewRefreshCallback){
if (!previewRefreshCallback) {
previewRefreshCallback = function(){};
}
var inputBox = wmd.panels.input;
var offsetHeight = 0;
var editObj = this;
var mainDiv;
var mainSpan;
var div; // This name is pretty ambiguous. I should rename this.
// Used to cancel recurring events from setInterval.
var creationHandle;
var undoMgr; // The undo manager
// Perform the button's action.
var doClick = function(button){
inputBox.focus();
if (button.textOp) {
if (undoMgr) {
undoMgr.setCommandMode();
}
var state = new wmd.TextareaState();
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();
previewRefreshCallback();
};
var useDefaultText = true;
var noCleanup = button.textOp(chunks, fixupInputArea, useDefaultText);
if(!noCleanup) {
fixupInputArea();
}
}
if (button.execute) {
button.execute(editObj);
}
};
var setUndoRedoButtonStates = function(){
if(undoMgr){
setupButton(document.getElementById("wmd-undo-button"), undoMgr.canUndo());
setupButton(document.getElementById("wmd-redo-button"), undoMgr.canRedo());
}
};
var setupButton = function(button, isEnabled) {
var normalYShift = "0px";
var disabledYShift = "-20px";
var highlightYShift = "-40px";
if(isEnabled) {
button.style.backgroundPosition = button.XShift + " " + normalYShift;
button.onmouseover = function(){
this.style.backgroundPosition = this.XShift + " " + highlightYShift;
};
button.onmouseout = function(){
this.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(global.isIE) {
button.onmousedown = function() {
wmd.ieRetardedClick = true;
wmd.ieCachedRange = document.selection.createRange();
};
}
if (!button.isHelp)
{
button.onclick = function() {
if (this.onmouseout) {
this.onmouseout();
}
doClick(this);
return false;
}
}
}
else {
button.style.backgroundPosition = button.XShift + " " + disabledYShift;
button.onmouseover = button.onmouseout = button.onclick = function(){};
}
}
var makeSpritedButtonRow = function(){
var buttonBar = document.getElementById("wmd-button-bar");
var normalYShift = "0px";
var disabledYShift = "-20px";
var highlightYShift = "-40px";
var buttonRow = document.createElement("ul");
buttonRow.id = "wmd-button-row";
buttonRow = buttonBar.appendChild(buttonRow);
var boldButton = document.createElement("li");
boldButton.className = "wmd-button";
boldButton.id = "wmd-bold-button";
boldButton.title = "Strong <strong> Ctrl+B";
boldButton.XShift = "0px";
boldButton.textOp = command.doBold;
setupButton(boldButton, true);
buttonRow.appendChild(boldButton);
var italicButton = document.createElement("li");
italicButton.className = "wmd-button";
italicButton.id = "wmd-italic-button";
italicButton.title = "Emphasis <em> Ctrl+I";
italicButton.XShift = "-20px";
italicButton.textOp = command.doItalic;
setupButton(italicButton, true);
buttonRow.appendChild(italicButton);
var spacer1 = document.createElement("li");
spacer1.className = "wmd-spacer";
spacer1.id = "wmd-spacer1";
buttonRow.appendChild(spacer1);
var linkButton = document.createElement("li");
linkButton.className = "wmd-button";
linkButton.id = "wmd-link-button";
linkButton.title = "Hyperlink <a> Ctrl+L";
linkButton.XShift = "-40px";
linkButton.textOp = function(chunk, postProcessing, useDefaultText){
return command.doLinkOrImage(chunk, postProcessing, false);
};
setupButton(linkButton, true);
buttonRow.appendChild(linkButton);
var quoteButton = document.createElement("li");
quoteButton.className = "wmd-button";
quoteButton.id = "wmd-quote-button";
quoteButton.title = "Blockquote <blockquote> Ctrl+Q";
quoteButton.XShift = "-60px";
quoteButton.textOp = command.doBlockquote;
setupButton(quoteButton, true);
buttonRow.appendChild(quoteButton);
var codeButton = document.createElement("li");
codeButton.className = "wmd-button";
codeButton.id = "wmd-code-button";
codeButton.title = "Code Sample <pre><code> Ctrl+K";
codeButton.XShift = "-80px";
codeButton.textOp = command.doCode;
setupButton(codeButton, true);
buttonRow.appendChild(codeButton);
var imageButton = document.createElement("li");
imageButton.className = "wmd-button";
imageButton.id = "wmd-image-button";
imageButton.title = "Image <img> Ctrl+G";
imageButton.XShift = "-100px";
imageButton.textOp = function(chunk, postProcessing, useDefaultText){
return command.doLinkOrImage(chunk, postProcessing, true);
};
setupButton(imageButton, true);
buttonRow.appendChild(imageButton);
var spacer2 = document.createElement("li");
spacer2.className = "wmd-spacer";
spacer2.id = "wmd-spacer2";
buttonRow.appendChild(spacer2);
var olistButton = document.createElement("li");
olistButton.className = "wmd-button";
olistButton.id = "wmd-olist-button";
olistButton.title = "Numbered List <ol> Ctrl+O";
olistButton.XShift = "-120px";
olistButton.textOp = function(chunk, postProcessing, useDefaultText){
command.doList(chunk, postProcessing, true, useDefaultText);
};
setupButton(olistButton, true);
buttonRow.appendChild(olistButton);
var ulistButton = document.createElement("li");
ulistButton.className = "wmd-button";
ulistButton.id = "wmd-ulist-button";
ulistButton.title = "Bulleted List <ul> Ctrl+U";
ulistButton.XShift = "-140px";
ulistButton.textOp = function(chunk, postProcessing, useDefaultText){
command.doList(chunk, postProcessing, false, useDefaultText);
};
setupButton(ulistButton, true);
buttonRow.appendChild(ulistButton);
var headingButton = document.createElement("li");
headingButton.className = "wmd-button";
headingButton.id = "wmd-heading-button";
headingButton.title = "Heading <h1>/<h2> Ctrl+H";
headingButton.XShift = "-160px";
headingButton.textOp = command.doHeading;
setupButton(headingButton, true);
buttonRow.appendChild(headingButton);
var hrButton = document.createElement("li");
hrButton.className = "wmd-button";
hrButton.id = "wmd-hr-button";
hrButton.title = "Horizontal Rule <hr> Ctrl+R";
hrButton.XShift = "-180px";
hrButton.textOp = command.doHorizontalRule;
setupButton(hrButton, true);
buttonRow.appendChild(hrButton);
var spacer3 = document.createElement("li");
spacer3.className = "wmd-spacer";
spacer3.id = "wmd-spacer3";
buttonRow.appendChild(spacer3);
var undoButton = document.createElement("li");
undoButton.className = "wmd-button";
undoButton.id = "wmd-undo-button";
undoButton.title = "Undo - Ctrl+Z";
undoButton.XShift = "-200px";
undoButton.execute = function(manager){
manager.undo();
};
setupButton(undoButton, true);
buttonRow.appendChild(undoButton);
var redoButton = document.createElement("li");
redoButton.className = "wmd-button";
redoButton.id = "wmd-redo-button";
redoButton.title = "Redo - Ctrl+Y";
if (/win/.test(nav.platform.toLowerCase())) {
redoButton.title = "Redo - Ctrl+Y";
}
else {
// mac and other non-Windows platforms
redoButton.title = "Redo - Ctrl+Shift+Z";
}
redoButton.XShift = "-220px";
redoButton.execute = function(manager){
manager.redo();
};
setupButton(redoButton, true);
buttonRow.appendChild(redoButton);
var helpButton = document.createElement("li");
helpButton.className = "wmd-button";
helpButton.id = "wmd-help-button";
helpButton.XShift = "-240px";
helpButton.isHelp = true;
var helpAnchor = document.createElement("a");
helpAnchor.href = helpLink;
helpAnchor.target = helpTarget
helpAnchor.title = helpHoverTitle;
helpButton.appendChild(helpAnchor);
setupButton(helpButton, true);
buttonRow.appendChild(helpButton);
setUndoRedoButtonStates();
}
var setupEditor = function(){
if (/\?noundo/.test(doc.location.href)) {
wmd.nativeUndo = true;
}
if (!wmd.nativeUndo) {
undoMgr = new wmd.undoManager(function(){
previewRefreshCallback();
setUndoRedoButtonStates();
});
}
makeSpritedButtonRow();
var keyEvent = "keydown";
if (global.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) {
var keyCode = key.charCode || key.keyCode;
var keyCodeStr = String.fromCharCode(keyCode).toLowerCase();
switch(keyCodeStr) {
case "b":
doClick(document.getElementById("wmd-bold-button"));
break;
case "i":
doClick(document.getElementById("wmd-italic-button"));
break;
case "l":
doClick(document.getElementById("wmd-link-button"));
break;
case "q":
doClick(document.getElementById("wmd-quote-button"));
break;
case "k":
doClick(document.getElementById("wmd-code-button"));
break;
case "g":
doClick(document.getElementById("wmd-image-button"));
break;
case "o":
doClick(document.getElementById("wmd-olist-button"));
break;
case "u":
doClick(document.getElementById("wmd-ulist-button"));
break;
case "h":
doClick(document.getElementById("wmd-heading-button"));
break;
case "r":
doClick(document.getElementById("wmd-hr-button"));
break;
case "y":
doClick(document.getElementById("wmd-redo-button"));
break;
case "z":
if(key.shiftKey) {
doClick(document.getElementById("wmd-redo-button"));
}
else {
doClick(document.getElementById("wmd-undo-button"));
}
break;
default:
return;
}
if (key.preventDefault) {
key.preventDefault();
}
if (top.event) {
top.event.returnValue = false;
}
}
});
// Auto-continue lists, code blocks and block quotes when
// the enter key is pressed.
util.addEvent(inputBox, "keyup", function(key){
if (!key.shiftKey && !key.ctrlKey && !key.metaKey) {
var keyCode = key.charCode || key.keyCode;
// Key code 13 is Enter
if (keyCode === 13) {
fakeButton = {};
fakeButton.textOp = command.doAutoindent;
doClick(fakeButton);
}
}
});
// Disable ESC clearing the input textarea on IE
if (global.isIE) {
util.addEvent(inputBox, "keydown", function(key){
var code = key.keyCode;
// Key code 27 is ESC
if (code === 27) {
return false;
}
});
}
if (inputBox.form) {
var submitCallback = inputBox.form.onsubmit;
// inputBox.form.onsubmit = function(){
// convertToHtml();
// if (submitCallback) {
// return submitCallback.apply(this, arguments);
// }
// };
}
};
// Convert the contents of the input textarea to HTML in the output/preview panels.
var convertToHtml = function(){
if (wmd.showdown) {
var markdownConverter = new wmd.showdown.converter();
}
var text = inputBox.value;
var callback = function(){
inputBox.value = text;
};
if (!/markdown/.test(wmd.wmd_env.output.toLowerCase())) {
if (markdownConverter) {
inputBox.value = markdownConverter.makeHtml(text);
top.setTimeout(callback, 0);
}
}
return true;
};
this.undo = function(){
if (undoMgr) {
undoMgr.undo();
}
};
this.redo = function(){
if (undoMgr) {
undoMgr.redo();
}
};
// This is pretty useless. The setupEditor function contents
// should just be copied here.
var init = function(){
setupEditor();
};
this.destroy = function(){
if (undoMgr) {
undoMgr.destroy();
}
if (div.parentNode) {
div.parentNode.removeChild(div);
}
if (inputBox) {
inputBox.style.marginTop = "";
}
top.clearInterval(creationHandle);
};
init();
};
// The input textarea state/contents.
// This is used to implement undo/redo by the undo manager.
wmd.TextareaState = function(){
// Aliases
var stateObj = this;
var inputArea = wmd.panels.input;
this.init = function() {
if (!util.isVisible(inputArea)) {
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 && !global.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 (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 and set a flag
// which we check for here.
var range;
if(wmd.ieRetardedClick && wmd.ieCachedRange) {
range = wmd.ieCachedRange;
wmd.ieRetardedClick = false;
}
else {
range = 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;
}
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 wmd.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;
if (global.isOpera) {
chunk.before = chunk.before.replace(/\n/g, "\r\n");
chunk.selection = chunk.selection.replace(/\n/g, "\r\n");
chunk.after = chunk.after.replace(/\n/g, "\r\n");
}
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();
};
// before: contains all the text in the input box BEFORE the selection.
// after: contains all the text in the input box AFTER the selection.
wmd.Chunks = function(){
};
// startRegex: a regular expression to find the start tag
// endRegex: a regular expresssion to find the end tag
wmd.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.
wmd.Chunks.prototype.trimWhitespace = function(remove){
this.selection = this.selection.replace(/^(\s*)/, "");
if (!remove) {
this.before += re.$1;
}
this.selection = this.selection.replace(/(\s*)$/, "");
if (!remove) {
this.after = re.$1 + this.after;
}
};
wmd.Chunks.prototype.addBlankLines = function(nLinesBefore, nLinesAfter, findExtraNewlines){
if (nLinesBefore === undefined) {
nLinesBefore = 1;
}
if (nLinesAfter === undefined) {
nLinesAfter = 1;
}
nLinesBefore++;
nLinesAfter++;
var regexText;
var replacementText;
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);
}
};
// The markdown symbols - 4 spaces = code, > = blockquote, etc.
command.prefixes = "(?:\\s{4,}|\\s*>|\\s*-\\s+|\\s*\\d+\\.|=|\\+|-|_|\\*|#|\\s*\\[[^\n]]+\\]:)";
// Remove markdown symbols from the chunk selection.
command.unwrap = function(chunk){
var txt = new re("([^\\n])\\n(?!(\\n|" + command.prefixes + "))", "g");
chunk.selection = chunk.selection.replace(txt, "$1 $2");
};
command.wrap = function(chunk, len){
command.unwrap(chunk);
var regex = new re("(.{1," + len + "})( +|$\\n?)", "gm");
chunk.selection = chunk.selection.replace(regex, function(line, marked){
if (new re("^" + command.prefixes, "").test(line)) {
return line;
}
return marked + "\n";
});
chunk.selection = chunk.selection.replace(/\s+$/, "");
};
command.doBold = function(chunk, postProcessing, useDefaultText){
return command.doBorI(chunk, 2, "strong text");
};
command.doItalic = function(chunk, postProcessing, useDefaultText){
return command.doBorI(chunk, 1, "emphasized text");
};
// chunk: The selected region that will be enclosed with */**
// nStars: 1 for italics, 2 for bold
// insertText: If you just click the button without highlighting text, this gets inserted
command.doBorI = function(chunk, nStars, insertText){
// Get rid of whitespace and fixup newlines.
chunk.trimWhitespace();
chunk.selection = chunk.selection.replace(/\n{2,}/g, "\n");
// Look for stars before and after. Is the chunk already marked up?
chunk.before.search(/(\**$)/);
var starsBefore = re.$1;
chunk.after.search(/(^\**)/);
var starsAfter = re.$1;
var prevStars = Math.min(starsBefore.length, starsAfter.length);
// Remove stars if we have to since the button acts as a toggle.
if ((prevStars >= nStars) && (prevStars != 2 || nStars != 1)) {
chunk.before = chunk.before.replace(re("[*]{" + nStars + "}$", ""), "");
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;
};
command.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;
};
command.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 = command.stripLinkDefs(chunk.before, defsToAdd);
chunk.selection = command.stripLinkDefs(chunk.selection, defsToAdd);
chunk.after = command.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;
};
command.doLinkOrImage = function(chunk, postProcessing, isImage){
chunk.trimWhitespace();
chunk.findTags(/\s*!?\[/, /\][ ]?(?:\n[ ]*)?(\[.*?\])?/);
if (chunk.endTag.length > 1) {
chunk.startTag = chunk.startTag.replace(/!?\[/, "");
chunk.endTag = "";
command.addLinkDef(chunk, null);
}
else {
if (/\n\n/.test(chunk.selection)) {
command.addLinkDef(chunk, null);
return;
}
// The function to be executed when you enter a link and press OK or Cancel.
// Marks up the link and adds the ref.
var makeLinkMarkdown = function(link){
if (link !== null) {
chunk.startTag = chunk.endTag = "";
var linkDef = " [999]: " + link;
var num = command.addLinkDef(chunk, linkDef);
chunk.startTag = isImage ? "![" : "[";
chunk.endTag = "][" + num + "]";
if (!chunk.selection) {
if (isImage) {
chunk.selection = "alt text";
}
else {
chunk.selection = "link text";
}
}
}
postProcessing();
};
if (isImage) {
util.prompt(imageDialogText, imageDefaultText, makeLinkMarkdown);
}
else {
util.prompt(linkDialogText, linkDefaultText, makeLinkMarkdown);
}
return true;
}
};
util.makeAPI = function(){
wmd.wmd = {};
wmd.wmd.editor = wmd.editor;
wmd.wmd.previewManager = wmd.previewManager;
};
util.startEditor = function(){
if (wmd.wmd_env.autostart === false) {
util.makeAPI();
return;
}
var edit; // The editor (buttons + input + outputs) - the main object.
var previewMgr; // The preview manager.
// Fired after the page has fully loaded.
var loadListener = function(){
wmd.panels = new wmd.PanelCollection();
previewMgr = new wmd.previewManager();
var previewRefreshCallback = previewMgr.refresh;
edit = new wmd.editor(previewRefreshCallback);
previewMgr.refresh(true);
};
util.addEvent(top, "load", loadListener);
};
wmd.previewManager = function(){
var managerObj = this;
var converter;
var poller;
var timeout;
var elapsedTime;
var oldInputText;
var htmlOut;
var maxDelay = 3000;
var startType = "delayed"; // The other legal value is "manual"
// Adds event listeners to elements and creates the input poller.
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);
// previewPollInterval is set at the top of this file.
poller = new wmd.inputPoller(listener, previewPollInterval);
};
var getDocScrollTop = function(){
var result = 0;
if (top.innerHeight) {
result = top.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 are no registered preview and output panels
// there is nothing to do.
if (!wmd.panels.preview && !wmd.panels.output) {
return;
}
var text = wmd.panels.input.value;
if (text && text == oldInputText) {
return; // Input text hasn't changed.
}
else {
oldInputText = text;
}
var prevTime = new Date().getTime();
if (!converter && wmd.showdown) {
converter = new wmd.showdown.converter();
}
if (converter) {
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);
htmlOut = text;
};
// setTimeout is already used. Used as an event listener.
var applyTimeout = function(){
if (timeout) {
top.clearTimeout(timeout);
timeout = undefined;
}
if (startType !== "manual") {
var delay = 0;
if (startType === "delayed") {
delay = elapsedTime;
}
if (delay > maxDelay) {
delay = maxDelay;
}
timeout = top.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 (wmd.panels.preview) {
wmd.panels.preview.scrollTop = (wmd.panels.preview.scrollHeight - wmd.panels.preview.clientHeight) * getScaleFactor(wmd.panels.preview);
;
}
if (wmd.panels.output) {
wmd.panels.output.scrollTop = (wmd.panels.output.scrollHeight - wmd.panels.output.clientHeight) * getScaleFactor(wmd.panels.output);
;
}
};
this.refresh = function(requiresRefresh){
if (requiresRefresh) {
oldInputText = "";
makePreviewHtml();
}
else {
applyTimeout();
}
};
this.processingTime = function(){
return elapsedTime;
};
// The output HTML
this.output = function(){
return htmlOut;
};
// The mode can be "manual" or "delayed"
this.setUpdateMode = function(mode){
startType = mode;
managerObj.refresh();
};
var isFirstTimeFilled = true;
var pushPreviewHtml = function(text){
var emptyTop = position.getTop(wmd.panels.input) - getDocScrollTop();
// Send the encoded HTML to the output textarea/div.
if (wmd.panels.output) {
// The value property is only defined if the output is a textarea.
if (wmd.panels.output.value !== undefined) {
wmd.panels.output.value = text;
wmd.panels.output.readOnly = true;
}
// Otherwise we are just replacing the text in a div.
// Send the HTML wrapped in <pre><code>
else {
var newText = text.replace(/&/g, "&");
newText = newText.replace(/</g, "<");
wmd.panels.output.innerHTML = "<pre><code>" + newText + "</code></pre>";
}
}
if (wmd.panels.preview) {
wmd.panels.preview.innerHTML = text;
}
setPanelScrollTops();
if (isFirstTimeFilled) {
isFirstTimeFilled = false;
return;
}
var fullTop = position.getTop(wmd.panels.input) - getDocScrollTop();
if (global.isIE) {
top.setTimeout(function(){
top.scrollBy(0, fullTop - emptyTop);
}, 0);
}
else {
top.scrollBy(0, fullTop - emptyTop);
}
};
var init = function(){
setupEvents(wmd.panels.input, applyTimeout);
makePreviewHtml();
if (wmd.panels.preview) {
wmd.panels.preview.scrollTop = 0;
}
if (wmd.panels.output) {
wmd.panels.output.scrollTop = 0;
}
};
this.destroy = function(){
if (poller) {
poller.destroy();
}
};
init();
};
// Moves the cursor to the next line and continues lists, quotes and code.
command.doAutoindent = function(chunk, postProcessing, useDefaultText){
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$/, "\n\n");
useDefaultText = false;
if(/(\n|^)[ ]{0,3}([*+-])[ \t]+.*\n$/.test(chunk.before)){
if(command.doList){
command.doList(chunk, postProcessing, false, true);
}
}
if(/(\n|^)[ ]{0,3}(\d+[.])[ \t]+.*\n$/.test(chunk.before)){
if(command.doList){
command.doList(chunk, postProcessing, true, true);
}
}
if(/(\n|^)[ ]{0,3}>[ \t]+.*\n$/.test(chunk.before)){
if(command.doBlockquote){
command.doBlockquote(chunk, postProcessing, useDefaultText);
}
}
if(/(\n|^)(\t|[ ]{4,}).*\n$/.test(chunk.before)){
if(command.doCode){
command.doCode(chunk, postProcessing, useDefaultText);
}
}
};
command.doBlockquote = function(chunk, postProcessing, useDefaultText){
chunk.selection = chunk.selection.replace(/^(\n*)([^\r]+?)(\n*)$/,
function(totalMatch, newlinesBefore, text, newlinesAfter){
chunk.before += newlinesBefore;
chunk.after = newlinesAfter + chunk.after;
return text;
});
chunk.before = chunk.before.replace(/(>[ \t]*)$/,
function(totalMatch, blankLine){
chunk.selection = blankLine + chunk.selection;
return "";
});
var defaultText = useDefaultText ? "Blockquote" : "";
chunk.selection = chunk.selection.replace(/^(\s|>)+$/ ,"");
chunk.selection = chunk.selection || defaultText;
// 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 = "";
var leftOver = "";
if (chunk.before) {
var lines = chunk.before.replace(/\n$/, "").split("\n");
var inChain = false;
for (var i in lines) {
var good = false;
line = lines[i];
inChain = inChain && line.length > 0; // c) any non-empty line continues the chain
if (/^>/.test(line)) { // a)
good = true;
if (!inChain && line.length > 1) // c) any line that starts with ">" and has at least one more character starts the chain
inChain = true;
} else if (/^[ \t]*$/.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]*$/gm, replacement) + "\n";
});
}
};
if(/^(?![ ]{0,3}>)/m.test(chunk.selection)){
command.wrap(chunk, wmd.wmd_env.lineLength - 2);
chunk.selection = chunk.selection.replace(/^/gm, "> ");
replaceBlanksInTags(true);
chunk.addBlankLines();
}
else{
chunk.selection = chunk.selection.replace(/^[ ]{0,3}> ?/gm, "");
command.unwrap(chunk);
replaceBlanksInTags(false);
if(!/^(\n|^)[ ]{0,3}>/.test(chunk.selection) && chunk.startTag){
chunk.startTag = chunk.startTag.replace(/\n{0,2}$/, "\n\n");
}
if(!/(\n|^)[ ]{0,3}>.*$/.test(chunk.selection) && chunk.endTag){
chunk.endTag=chunk.endTag.replace(/^\n{0,2}/, "\n\n");
}
}
if(!/\n/.test(chunk.selection)){
chunk.selection = chunk.selection.replace(/^(> *)/,
function(wholeMatch, blanks){
chunk.startTag += blanks;
return "";
});
}
};
command.doCode = function(chunk, postProcessing, useDefaultText){
var hasTextBefore = /\S[ ]*$/.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}$/,
function(totalMatch){
chunk.selection = totalMatch + chunk.selection;
return "";
});
var nLinesBefore = 1;
var nLinesAfter = 1;
if(/\n(\t|[ ]{4,}).*\n$/.test(chunk.before) || chunk.after === ""){
nLinesBefore = 0;
}
if(/^\n(\t|[ ]{4,})/.test(chunk.after)){
nLinesAfter = 0; // This needs to happen on line 1
}
chunk.addBlankLines(nLinesBefore, nLinesAfter);
if(!chunk.selection){
chunk.startTag = " ";
chunk.selection = useDefaultText ? "enter code here" : "";
}
else {
if(/^[ ]{0,3}\S/m.test(chunk.selection)){
chunk.selection = chunk.selection.replace(/^/gm, " ");
}
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 = useDefaultText ? "enter code here" : "";
}
}
else if(chunk.endTag && !chunk.startTag){
chunk.before += chunk.endTag;
chunk.endTag = "";
}
else{
chunk.startTag = chunk.endTag="";
}
}
};
command.doList = function(chunk, postProcessing, isNumberedList, useDefaultText){
// 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");
command.unwrap(chunk);
chunk.addBlankLines();
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 nLinesBefore = 1;
chunk.before = chunk.before.replace(previousItemsRegex,
function(itemText){
if(/^\s*([*+-])/.test(itemText)){
bullet = re.$1;
}
nLinesBefore = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
return getPrefixedItem(itemText);
});
if(!chunk.selection){
chunk.selection = useDefaultText ? "List item" : " ";
}
var prefix = getItemPrefix();
var nLinesAfter = 1;
chunk.after = chunk.after.replace(nextItemsRegex,
function(itemText){
nLinesAfter = /[^\n]\n\n[^\n]/.test(itemText) ? 1 : 0;
return getPrefixedItem(itemText);
});
chunk.trimWhitespace(true);
chunk.addBlankLines(nLinesBefore, nLinesAfter, true);
chunk.startTag = prefix;
var spaces = prefix.replace(/./g, " ");
command.wrap(chunk, wmd.wmd_env.lineLength - spaces.length);
chunk.selection = chunk.selection.replace(/\n/g, "\n" + spaces);
};
command.doHeading = function(chunk, postProcessing, useDefaultText){
// Remove leading/trailing whitespace and reduce internal spaces to single spaces.
chunk.selection = chunk.selection.replace(/\s+/g, " ");
chunk.selection = chunk.selection.replace(/(^\s+|\s+$)/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.addBlankLines(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 > wmd.wmd_env.lineLength){
len = wmd.wmd_env.lineLength;
}
chunk.endTag = "\n";
while(len--){
chunk.endTag += headerChar;
}
}
};
command.doHorizontalRule = function(chunk, postProcessing, useDefaultText){
chunk.startTag = "----------\n";
chunk.selection = "";
chunk.addBlankLines(2, 1, true);
}
};
Attacklab.wmd_env = {};
Attacklab.account_options = {};
Attacklab.wmd_defaults = {version:1, output:"HTML", lineLength:40, delayLoad:false};
if(!Attacklab.wmd)
{
Attacklab.wmd = function()
{
Attacklab.loadEnv = function()
{
var mergeEnv = function(env)
{
if(!env)
{
return;
}
for(var key in env)
{
Attacklab.wmd_env[key] = env[key];
}
};
mergeEnv(Attacklab.wmd_defaults);
mergeEnv(Attacklab.account_options);
mergeEnv(top["wmd_options"]);
Attacklab.full = true;
var defaultButtons = "bold italic link blockquote code image ol ul heading hr";
Attacklab.wmd_env.buttons = Attacklab.wmd_env.buttons || defaultButtons;
};
Attacklab.loadEnv();
};
Attacklab.wmd();
Attacklab.wmdBase();
Attacklab.Util.startEditor();
};