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04.07.2008 at 10:19AM PDT, ID: 23302045
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7.5

Set HTML Source as default in a wysiwyg editor

Asked by phper in JavaScript

Tags:

I'm using widgEditor as a wysiwyg editor. By default the wysiwyg editor is set. What I want is the HTML Source as default, but I don't know where in th js to do it.Start Free Trial 
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/*
**    File: widgEdit.js
**    Created by: Cameron Adams (http://www.themaninblue.com/)
**    Created on: 2005-01-16
**    Last modified: 2008-03-01
**
**
**
**
**    License Information:
**    -------------------------------------------------------------------------
**    Copyright (C) 2008 Cameron Adams
**
**    This program is free software; you can redistribute it and/or modify it
**    under the terms of the GNU General Public License as published by the
**    Free Software Foundation; either version 2 of the License, or (at your
**    option) any later version.
**    
**    This program is distributed in the hope that it will be useful, but
**    WITHOUT ANY WARRANTY; without even the implied warranty of
**    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**    General Public License for more details.
**    
**    You should have received a copy of the GNU General Public License along
**    with this program; if not, write to the Free Software Foundation, Inc.,
**    59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**    
**    
**    
**    
**    Purpose:
**    -------------------------------------------------------------------------
**
**    Replaces all textareas (class="widgEditor") in a HTML document with
**    enhanced editing windows to allow basic HTML formatting in a WYSIWYG
**    manner.
**
**
**
**
**    Function list:
**    -------------------------------------------------------------------------
**
**    run()
**
**    widgInit()
**
**    widgEditor(replacedTextareaID)
**    widtEditor.cleanPaste()
**    widgEditor.cleanSource()
**    widgEditor.convertSPANs(theSwitch)
**    widgEditor.detectPaste(e)
**    widgEditor.initEdit()
**    widgEditor.insertNewParagraph()
**    widgEditor.modifyFormSubmit()
**    widgEditor.paragraphise()
**    widgEditor.refreshDisplay()
**    widgEditor.switchMode()
**    widgEditor.updateWidgInput()
**    widgEditor.writeDocument()
**
**    widgToolbar()
**    widgToolbar.addButton(theID, theClass, theLabel, theAction)
**    widgToolbar.addSelect(theID, theClass, theContentArray, theAction)
**    widgToolbar.disable()
**    widgToolbar.enable()
**    widgToolbar.setState(theState, theStatus)
**
**    widgToolbarAction()
**
**    widgToolbarCheckState(theWidgEditor, resubmit)
**
**    widgToolbarMouseover()
**
**    acceptableChildren(theNode)
**
**    changeNodeType(theNode, nodeType)
**
**    replaceNodeWithChildren()
**
**    String.addClass(theClass)
**    String.classExists(theClass)
**    String.isAcceptedElementName()
**    String.isInlineName()
**    String.removeClass(theClass)
**    String.reverse()
**    String.validTags()
*/
 
 
 
 
/******************************************************************************
**    CONFIGURATION VARIABLES
******************************************************************************/
 
/* Location of stylesheet file for editor content */
var widgStylesheet = "widgContent.css";
 
/* Items to appear in toolbar. */
var widgToolbarItems = new Array();
 
widgToolbarItems.push("bold");
widgToolbarItems.push("italic");
widgToolbarItems.push("hyperlink");
widgToolbarItems.push("unorderedlist");
widgToolbarItems.push("htmlsource");
widgToolbarItems.push("blockformat");
 
/* Options on block format select element. Consists of string pairs (option value, option label) */
var widgSelectBlockOptions = new Array();
 
widgSelectBlockOptions.push("", "Type Face");
widgSelectBlockOptions.push("<h1>", "Heading 1");
widgSelectBlockOptions.push("<h2>", "Heading 2");
widgSelectBlockOptions.push("<h3>", "Heading 3");
widgSelectBlockOptions.push("<h4>", "Heading 4");
widgSelectBlockOptions.push("<h5>", "Heading 5");
widgSelectBlockOptions.push("<h6>", "Heading 6");
widgSelectBlockOptions.push("<p>", "Paragraph");
 
/* If widgInsertParagraphs = true, when content is submitted paragraphs will be
** inserted around text without a parent element. Mozilla does not
** automatically do this, so if this is set to false you will end up with some
** plain text blocks. Uses a double <br /> as a pargraph marker.
*/
 
var widgInsertParagraphs = false;
 
/* If widgAutoClean = true, when content is pasted into the WYSIWYG view, it
** will automatically be cleaned. If widgAutoClean = false, the user will be
** prompted as to whether they wish to clean the content.
*/
 
var widgAutoClean = false;
 
/******************************************************************************
**    END CONFIGURATION
******************************************************************************/
 
 
 
 
run();
 
 
 
 
function run()
{
	var oldOnload = window.onload;
 
	if (typeof(window.onload) != "function")
	{
		window.onload = widgInit;
	}
	else
	{
		window.onload = function()
		{
			oldOnload();
			widgInit();
		}
	}
}
 
 
 
 
function widgInit()
{
	/* Detects if designMode is available, and also if browser is IE or Mozilla (excludes Safari) */
	if (typeof(document.designMode) == "string" && (document.all || document.designMode == "off"))
	{
		var theTextareas = document.getElementsByTagName("textarea");
		
		for (var i = 0; i < theTextareas.length; i++)
		{
			var theTextarea = theTextareas[i];
			
			if (theTextarea.className.classExists("widgEditor"))
			{
				if (theTextarea.id == "")
				{
					theTextarea.id = theTextarea.name;
				}
				
				
				setTimeout("new widgEditor('" + theTextarea.id + "')", 500 * (i));
			}
		}
	}
	else
	{
		return false;
	}
	
	return true;
}
 
 
 
 
function widgEditor(replacedTextareaID)
{
	var self = this;
	
	this.theTextarea = document.getElementById(replacedTextareaID);
	this.theContainer = document.createElement("div");
	this.theIframe = document.createElement("iframe");
	this.theInput = document.createElement("input");
	this.theExtraInput = document.createElement("input");
	this.IE = false;
	this.locked = true;
	this.pasteCache = "";
	this.wysiwyg = true;
	
	if (document.all)
	{
		this.IE = true;
	}
	
	if (this.theTextarea.id == null)
	{
		this.theTextarea.id = this.theTextarea.name;
	}
	
	this.theTextarea.style.visibility = "hidden";
 
	/* Modify DOM objects for editor */
	this.theContainer.id = this.theTextarea.id + "WidgContainer";
	this.theContainer.className = "widgContainer";
	
	this.theIframe.id = this.theTextarea.id + "WidgIframe";
	this.theIframe.className = "widgIframe";
	
	this.theInput.type = "hidden";
	this.theInput.id = this.theTextarea.id;
	this.theInput.name = this.theTextarea.name;
	this.theInput.value = this.theTextarea.value;
 
	this.theToolbar = new widgToolbar(this);
	
	/* An extra input to determine if the submitted data is from the normal textarea or from the widgEditor */
	this.theExtraInput.type = "hidden";	
	this.theExtraInput.id = this.theTextarea.id + "WidgEditor";
	this.theExtraInput.name = this.theTextarea.name + "WidgEditor";
	this.theExtraInput.value = "true";
	
	this.theTextarea.id += "WidgTextarea";
	this.theTextarea.name += "WidgTextarea";
	
	this.theContainer.appendChild(this.theToolbar.theList);
	this.theContainer.appendChild(this.theIframe);
	this.theContainer.appendChild(this.theInput);
	this.theContainer.appendChild(this.theExtraInput);
	this.theContainer.style.visibility = "hidden";
 
	this.theInput.widgEditorObject = this;
	
	this.theTextarea.parentNode.replaceChild(this.theContainer, this.theTextarea);
 
	/* Fill editor with old textarea content */
	this.writeDocument(this.theInput.value);
	
	/* Make editor editable */
	this.initEdit();
	
	/* Attach onsubmit to parent form */
	this.modifyFormSubmit();
	
	return true;
}
 
 
 
 
/* Clean pasted content */
widgEditor.prototype.cleanPaste = function()
{
	if (widgAutoClean || confirm("Do you wish to clean the HTML source of the content you just pasted?"))
	{
		var matchedHead = "";
		var matchedTail = "";
		var newContent = this.theIframe.contentWindow.document.getElementsByTagName("body")[0].innerHTML;
		var newContentStart = 0;
		var newContentFinish = 0;
		var newSnippet = "";
		var tempNode = document.createElement("div");
 
		/* Find start of both strings that matches */
		for (newContentStart = 0; newContent.charAt(newContentStart) == this.pasteCache.charAt(newContentStart); newContentStart++)
		{
			matchedHead += this.pasteCache.charAt(newContentStart);
		}
		
		/* If newContentStart is inside a HTML tag, move to opening brace of tag */
		for (var i = newContentStart; i >= 0; i--)
		{
			if (this.pasteCache.charAt(i) == "<")
			{
				newContentStart = i;
				matchedHead = this.pasteCache.substring(0, newContentStart);
				
				break;
			}
			else if(this.pasteCache.charAt(i) == ">")
			{
				break;
			}
		}
 
		newContent = newContent.reverse();
		this.pasteCache = this.pasteCache.reverse();
 
		/* Find end of both strings that matches */
		for (newContentFinish = 0; newContent.charAt(newContentFinish) == this.pasteCache.charAt(newContentFinish); newContentFinish++)
		{
			matchedTail += this.pasteCache.charAt(newContentFinish);
		}
 
		/* If newContentFinish is inside a HTML tag, move to closing brace of tag */
		for (var i = newContentFinish; i >= 0; i--)
		{
			if (this.pasteCache.charAt(i) == ">")
			{
				newContentFinish = i;
				matchedTail = this.pasteCache.substring(0, newContentFinish);
				
				break;
			}
			else if(this.pasteCache.charAt(i) == "<")
			{
				break;
			}
		}
 
		matchedTail = matchedTail.reverse();
 
		/* If there's no difference in pasted content */
		if (newContentStart == newContent.length - newContentFinish)
		{
			return false;
		}
 
		newContent = newContent.reverse();
		newSnippet = newContent.substring(newContentStart, newContent.length - newContentFinish);
		newSnippet = newSnippet.validTags();
 
		/* Replace opening bold tags with strong */
		newSnippet = newSnippet.replace(/<b(\s+|>)/g, "<strong$1");
		/* Replace closing bold tags with closing strong */
		newSnippet = newSnippet.replace(/<\/b(\s+|>)/g, "</strong$1");
 
		/* Replace italic tags with em */
		newSnippet = newSnippet.replace(/<i(\s+|>)/g, "<em$1");
		/* Replace closing italic tags with closing em */
		newSnippet = newSnippet.replace(/<\/i(\s+|>)/g, "</em$1");
 
		/* Strip out unaccepted attributes */
		newSnippet = newSnippet.replace(/<[^>]*>/g, function(match)
			{
				match = match.replace(/ ([^=]+)="[^"]*"/g, function(match2, attributeName)
					{
						if (attributeName == "alt" || attributeName == "href" || attributeName == "src" || attributeName == "title")
						{
							return match2;
						}
 
						return "";
					});
 
				return match;
			}
			);
 
		tempNode.innerHTML = newSnippet;
 
		acceptableChildren(tempNode);
		
		this.theInput.value = matchedHead + tempNode.innerHTML + matchedTail;
 
		/* Final cleanout for MS Word cruft */
		this.theInput.value = this.theInput.value.replace(/<\?xml[^>]*>/g, "");
		this.theInput.value = this.theInput.value.replace(/<[^ >]+:[^>]*>/g, "");
		this.theInput.value = this.theInput.value.replace(/<\/[^ >]+:[^>]*>/g, "");
 
		this.refreshDisplay();
		
		/* Convert semantics to spans in Mozilla */
		if (!this.IE)
		{
			this.convertSPANs();
		}
	}
	
	return true;
}
 
 
 
 
/* Clean the HTML code of the content area */
widgEditor.prototype.cleanSource = function()
{
	var theHTML = "";
	
	if (this.wysiwyg)
	{
		theHTML = this.theIframe.contentWindow.document.getElementsByTagName("body")[0].innerHTML;
	}
	else
	{
		theHTML = this.theTextarea.value;
	}
 
	theHTML = theHTML.validTags();
	
	/* Remove leading and trailing whitespace */
	theHTML = theHTML.replace(/^\s+/, "");
	theHTML = theHTML.replace(/\s+$/, "");
	
	/* Remove style attribute inside any tag */
	theHTML = theHTML.replace(/ style="[^"]*"/g, "");
 
	/* Replace improper BRs */
	//theHTML = theHTML.replace(/<br \/><br \/>/g, "<br />");
	theHTML = theHTML.replace(/<br>/g, "");
	/* Remove BRs right before the end of blocks */
	theHTML = theHTML.replace(/<br \/>\s*<\/(h1|h2|h3|h4|h5|h6|li|p)/g, "</$1");
	
	/* Replace improper IMGs */
	theHTML = theHTML.replace(/(<img [^>]+[^\/])>/g, "$1 />");
	
	/* Remove empty tags */
	theHTML = theHTML.replace(/(<[^\/]>|<[^\/][^>]*[^\/]>)\s*<\/[^>]*>/g, "");
	
	if (this.wysiwyg)
	{
		this.theIframe.contentWindow.document.getElementsByTagName("body")[0].innerHTML = theHTML;
	}
	else
	{
		this.theTextarea.value = theHTML;
	}
	
	this.theInput.value = theHTML;
	
	return true;
}
 
 
 
 
widgEditor.prototype.convertSPANs = function(theSwitch)
{
	if (theSwitch)
	{
		/* Replace styled spans with their semantic equivalent */
		var theSPANs = this.theIframe.contentWindow.document.getElementsByTagName("span");
	
		while(theSPANs.length > 0)
		{
			var theChildren = new Array();
			var theReplacementElement = null;
			var theParentElement = null;
			
			for (var j = 0; j < theSPANs[0].childNodes.length; j++)
			{
				theChildren.push(theSPANs[0].childNodes[j].cloneNode(true));
			}
			
			/* Detect type of span style */
			switch (theSPANs[0].getAttribute("style"))
			{
				case "font-weight: bold;":
					theReplacementElement = this.theIframe.contentWindow.document.createElement("strong");
					theParentElement = theReplacementElement;
					
					break;
				
				case "font-style: italic;":
					theReplacementElement = this.theIframe.contentWindow.document.createElement("em");
					theParentElement = theReplacementElement;
					
					break;
					
				case "font-weight: bold; font-style: italic;":
					theParentElement = this.theIframe.contentWindow.document.createElement("em");
					theReplacementElement = this.theIframe.contentWindow.document.createElement("strong");
					theReplacementElement.appendChild(theParentElement);
					
					break;
					
				case "font-style: italic; font-weight: bold;":
					theParentElement = this.theIframe.contentWindow.document.createElement("strong");
					theReplacementElement = this.theIframe.contentWindow.document.createElement("em");
					theReplacementElement.appendChild(theParentElement);
					
					break;
					
				default:
					replaceNodeWithChildren(theSPANs[0]);
				
					break;
			}
			
			if (theReplacementElement != null)
			{
				for (var j = 0; j < theChildren.length; j++)
				{
					theParentElement.appendChild(theChildren[j]);
				}
 
				theSPANs[0].parentNode.replaceChild(theReplacementElement, theSPANs[0]);
			}
			
			theSPANs = this.theIframe.contentWindow.document.getElementsByTagName("span");
		}
	}
	else
	{
		/* Replace em and strong tags with styled spans */
		var theEMs = this.theIframe.contentWindow.document.getElementsByTagName("em");
		
		while(theEMs.length > 0)
		{
			var theChildren = new Array();
			var theSpan = this.theIframe.contentWindow.document.createElement("span");
			
			theSpan.setAttribute("style", "font-style: italic;");
			
			for (var j = 0; j < theEMs[0].childNodes.length; j++)
			{
				theChildren.push(theEMs[0].childNodes[j].cloneNode(true));
			}
			
			for (var j = 0; j < theChildren.length; j++)
			{
				theSpan.appendChild(theChildren[j]);
			}
 
			theEMs[0].parentNode.replaceChild(theSpan, theEMs[0]);
			theEMs = this.theIframe.contentWindow.document.getElementsByTagName("em");
		}
		
		var theSTRONGs = this.theIframe.contentWindow.document.getElementsByTagName("strong");
		
		while(theSTRONGs.length > 0)
		{
			var theChildren = new Array();
			var theSpan = this.theIframe.contentWindow.document.createElement("span");
			
			theSpan.setAttribute("style", "font-weight: bold;");
			
			for (var j = 0; j < theSTRONGs[0].childNodes.length; j++)
			{
				theChildren.push(theSTRONGs[0].childNodes[j].cloneNode(true));
			}
			
			for (var j = 0; j < theChildren.length; j++)
			{
				theSpan.appendChild(theChildren[j]);
			}
 
			theSTRONGs[0].parentNode.replaceChild(theSpan, theSTRONGs[0]);
			theSTRONGs = this.theIframe.contentWindow.document.getElementsByTagName("strong");
		}
	}
	
	return true;
}
 
 
 
 
/* Check for pasted content */
widgEditor.prototype.detectPaste = function(e)
{
	var keyPressed = null;
	var theEvent = null;
	
	if (e)
	{
		theEvent = e;
	}
	else
	{
		theEvent = event;
	}
	
	if (theEvent.ctrlKey && theEvent.keyCode == 86 && this.wysiwyg)
	{
		var self = this;
		
		this.pasteCache = this.theIframe.contentWindow.document.getElementsByTagName("body")[0].innerHTML;
 
		/* Because Mozilla can't access the clipboard directly, must rely on timeout to check pasted differences in main content */
		setTimeout(function(){self.cleanPaste(); return true;}, 100);
	}
 
	return true;
}
 
 
 
 
/* Turn on document editing */
widgEditor.prototype.initEdit = function()
{
	var self = this;
	
	try
	{
		this.theIframe.contentWindow.document.designMode = "on";
	}
	catch (e)
	{
		/* setTimeout needed to counteract Mozilla bug whereby you can't immediately change designMode on newly created iframes */
		setTimeout(function(){self.initEdit()}, 250);
			
		return false;
	}
	
	if (!this.IE)
	{
		this.convertSPANs(false);
	}
	
	this.theContainer.style.visibility = "visible";
	this.theTextarea.style.visibility = "visible";
	
	/* Mozilla event capturing */
	if (typeof document.addEventListener == "function")
	{
		this.theIframe.contentWindow.document.addEventListener("mouseup", function(){widgToolbarCheckState(self); return true;}, false);
		this.theIframe.contentWindow.document.addEventListener("keyup", function(){widgToolbarCheckState(self); return true;}, false);
		this.theIframe.contentWindow.document.addEventListener("keydown", function(e){self.detectPaste(e); return true;}, false);
	}
	/* IE event capturing */
	else
	{
		this.theIframe.contentWindow.document.attachEvent("onmouseup", function(){widgToolbarCheckState(self); return true;});
		this.theIframe.contentWindow.document.attachEvent("onkeyup", function(){widgToolbarCheckState(self); return true;});
		this.theIframe.contentWindow.document.attachEvent("onkeydown", function(e){self.detectPaste(e); return true;}, false);
	}
	
	this.locked = false;
 
	return true;	
}
 
 
 
 
/* Add elements to a paragraph and inserts the paragraph before a given element in the body */
widgEditor.prototype.insertNewParagraph = function(elementArray, succeedingElement)
{
	var theBody = this.theIframe.contentWindow.document.getElementsByTagName("body")[0];
	var theParagraph = this.theIframe.contentWindow.document.createElement("p");
	
	for (var i = 0; i < elementArray.length; i++)
	{
		theParagraph.appendChild(elementArray[i]);
	}
	
	if (typeof(succeedingElement) != "undefined")
	{
		theBody.insertBefore(theParagraph, succeedingElement);
	}
	else
	{
		theBody.appendChild(theParagraph);
	}
	
	return true;
}
 
 
 
 
/* Add submit listener to parent form */
widgEditor.prototype.modifyFormSubmit = function()
{
	var self = this;
	var theForm = this.theContainer.parentNode;
	var oldOnsubmit = null;
	
	/* Find the parent form element */
	while (theForm.nodeName.toLowerCase() != "form")
	{
		theForm = theForm.parentNode;
	}
 
	/* Add onsubmit without overwriting existing function calls */
	oldOnsubmit = theForm.onsubmit;
 
	if (typeof theForm.onsubmit != "function")
	{
		theForm.onsubmit = function()
		{
			return self.updateWidgInput();
		}
	}
	else
	{
		theForm.onsubmit = function()
		{
			self.updateWidgInput();
 
			return oldOnsubmit();			
		}
	}
 
	return true;
}
 
 
 
 
/* Format the HTML with paragraphs. Any parentless text is enclosed in a paragraph, double breaks are paragraph markers */
widgEditor.prototype.paragraphise = function()
{
	if (widgInsertParagraphs && this.wysiwyg)
	{
		var theBody = this.theIframe.contentWindow.document.getElementsByTagName("body")[0];
 
		/* Remove all text nodes containing just whitespace */
		for (var i = 0; i < theBody.childNodes.length; i++)
		{
			if (theBody.childNodes[i].nodeName.toLowerCase() == "#text" &&
				theBody.childNodes[i].data.search(/^\s*$/) != -1)
			{
				theBody.removeChild(theBody.childNodes[i]);
 
				i--;
			}
		}
 
		var removedElements = new Array();
 
		for (var i = 0; i < theBody.childNodes.length; i++)
		{
			if (theBody.childNodes[i].nodeName.isInlineName())
			{
				removedElements.push(theBody.childNodes[i].cloneNode(true));
 
				theBody.removeChild(theBody.childNodes[i]);
 
				i--;
			}
			else if (theBody.childNodes[i].nodeName.toLowerCase() == "br")
			{
				if (i + 1 < theBody.childNodes.length)
				{
					/* If the current break tag is followed by another break tag */
					if (theBody.childNodes[i + 1].nodeName.toLowerCase() == "br")
					{
						/* Remove consecutive break tags */
						while (i < theBody.childNodes.length && theBody.childNodes[i].nodeName.toLowerCase() == "br")
						{
							theBody.removeChild(theBody.childNodes[i]);
						}
 
						if (removedElements.length > 0)
						{
							this.insertNewParagraph(removedElements, theBody.childNodes[i]);
 
							removedElements = new Array();
						}
					}
					/* If the break tag appears before a block element */
					else if (!theBody.childNodes[i + 1].nodeName.isInlineName())
					{
						theBody.removeChild(theBody.childNodes[i]);
					}
					else if (removedElements.length > 0)
					{
						removedElements.push(theBody.childNodes[i].cloneNode(true));
 
						theBody.removeChild(theBody.childNodes[i]);
					}
					else
					{
						theBody.removeChild(theBody.childNodes[i]);
					}
 
					i--;
				}
				else
				{
					theBody.removeChild(theBody.childNodes[i]);
				}
			}
			else if (removedElements.length > 0)
			{
				this.insertNewParagraph(removedElements, theBody.childNodes[i]);
 
				removedElements = new Array();
			}
		}
 
		if (removedElements.length > 0)
		{
			this.insertNewParagraph(removedElements);
		}
	}
	
	return true;
}
 
 
 
 
/* Update hidden input to reflect editor contents, for submission */
widgEditor.prototype.refreshDisplay = function()
{
	if (this.wysiwyg)
	{
		this.theIframe.contentWindow.document.getElementsByTagName("body")[0].innerHTML	= this.theInput.value;
	}
	else
	{
		this.theTextarea.value = this.theInput.value;
	}
 
	return true;
}
 
 
 
 
/* Switch between WYSIWYG and HTML source */
widgEditor.prototype.switchMode = function()
{
	if (!this.locked)
	{
		this.locked = false;
		
		/* Switch to HTML source */
		if (this.wysiwyg)
		{
			this.updateWidgInput();
			this.theTextarea.value = this.theInput.value;	
			this.theContainer.replaceChild(this.theTextarea, this.theIframe);
			this.theToolbar.disable();
			this.wysiwyg = false;
			this.locked = false;
		}
		/* Switch to WYSIWYG */
		else
		{
			this.updateWidgInput();
			this.theContainer.replaceChild(this.theIframe, this.theTextarea);
			this.writeDocument(this.theInput.value);
			this.theToolbar.enable();
			this.initEdit();
			this.wysiwyg = true;
		}
	}
			
	return true;
}
 
 
 
 
/* Update hidden input to reflect editor contents, for submission */
widgEditor.prototype.updateWidgInput = function()
{
	if (this.wysiwyg)
	{
		/* Convert spans to semantics in Mozilla */
		if (!this.IE)
		{
			this.convertSPANs(true);
		}
		
		this.paragraphise();		
		this.cleanSource();
	}
	else
	{
		this.theInput.value = this.theTextarea.value;
	}
 
	return true;
}
 
 
 
 
/* Write initial content to editor */
widgEditor.prototype.writeDocument = function(documentContent)
{
	/* HTML template into which the HTML Editor content is inserted */
	var documentTemplate = '\
		<html>\
			<head>\
				INSERT:STYLESHEET:END\
			</head>\
			<body id="iframeBody">\
				INSERT:CONTENT:END\
			</body>\
		</html>\
	';
	
	/* Insert dynamic variables/content into document */
	/* IE needs stylesheet to be written inline */
	if (typeof document.all != "undefined")
	{
		documentTemplate = documentTemplate.replace(/INSERT:STYLESHEET:END/, '<link rel="stylesheet" type="text/css" href="' + widgStylesheet + '"></link>');
	}
	/* Firefox can't have stylesheet written inline */
	else
	{
		documentTemplate = documentTemplate.replace(/INSERT:STYLESHEET:END/, "");
	}
	
	documentTemplate = documentTemplate.replace(/INSERT:CONTENT:END/, documentContent);
	
	this.theIframe.contentWindow.document.open();
	this.theIframe.contentWindow.document.write(documentTemplate);
	this.theIframe.contentWindow.document.close();
 
	/* In Firefox stylesheet needs to be loaded separate to other HTML, because if it's loaded inline it causes Firefox to have problems with an empty document */
	if (typeof document.all == "undefined")
	{
		var stylesheet = this.theIframe.contentWindow.document.createElement("link");
		stylesheet.setAttribute("rel", "stylesheet");
		stylesheet.setAttribute("type", "text/css");
		stylesheet.setAttribute("href", widgStylesheet);
		this.theIframe.contentWindow.document.getElementsByTagName("head")[0].appendChild(stylesheet);
	}
	
	return true;
}
 
 
 
 
/* Toolbar items */
function widgToolbar(theEditor)
{
	var self = this;
	
	this.widgEditorObject = theEditor;
	
	/* Create toolbar ul element */
	this.theList = document.createElement("ul");
	this.theList.id = this.widgEditorObject.theInput.id + "WidgToolbar";
	this.theList.className = "widgToolbar";
	this.theList.widgToolbarObject = this;
 
	/* Create toolbar items */
	for (var i = 0; i < widgToolbarItems.length; i++)
	{
		switch (widgToolbarItems[i])
		{
			case "bold":
				this.addButton(this.theList.id + "ButtonBold", "widgButtonBold", "Bold", "bold");
				
				break;
				
			case "italic":
				this.addButton(this.theList.id + "ButtonItalic", "widgButtonItalic", "Italic", "italic");
				
				break;
				
			case "hyperlink":
				this.addButton(this.theList.id + "ButtonLink", "widgButtonLink", "Hyperlink", "link");
				
				break;
				
			case "unorderedlist":
				this.addButton(this.theList.id + "ButtonUnordered", "widgButtonUnordered", "Unordered List", "insertunorderedlist");
				
				break;
				
			case "orderedlist":
				this.addButton(this.theList.id + "ButtonOrdered", "widgButtonOrdered", "Ordered List", "insertorderedlist");
				
				break;
				
			case "image":
				this.addButton(this.theList.id + "ButtonImage", "widgButtonImage", "Insert Image", "image");
				
				break;
				
			case "htmlsource":
				this.addButton(this.theList.id + "ButtonHTML", "widgButtonHTML", "HTML Source", "html");
				
				break;
				
			case "blockformat":
				this.addSelect(this.theList.id + "SelectBlock", "widgSelectBlock", widgSelectBlockOptions, "formatblock");
				
				break;
		}
	}
 
	return true;
}
 
 
 
 
 
/* Add button to toolbar */
widgToolbar.prototype.addButton = function(theID, theClass, theLabel, theAction)
{
	var menuItem = document.createElement("li");
	var theLink = document.createElement("a");
	var theText = document.createTextNode(theLabel);
	
	menuItem.id = theID;
	menuItem.className = "widgEditButton";
 
	theLink.href = "#";
	theLink.title = theLabel;
	theLink.className = theClass;
	theLink.action = theAction;
	theLink.onclick = widgToolbarAction;
	theLink.onmouseover = widgToolbarMouseover;
 
	theLink.appendChild(theText);
	menuItem.appendChild(theLink);
	this.theList.appendChild(menuItem);
 
	return true;
}
 
 
 
 
/* Add select box to toolbar. theContentArray is an array of string pairs (option value, option label) */
widgToolbar.prototype.addSelect = function(theID, theClass, theContentArray, theAction)
{
	var menuItem = document.createElement("li");
	var theSelect = document.createElement("select");
	
	menuItem.className = "widgEditSelect";
	
	theSelect.id = theID;
	theSelect.name = theID;
	theSelect.className = theClass;
	theSelect.action = theAction;
	theSelect.onchange = widgToolbarAction;
 
	for (var i = 0; i < theContentArray.length; i += 2)
	{
		var theOption = document.createElement("option");
		var theText = document.createTextNode(theContentArray[i + 1]);
		
		theOption.value = theContentArray[i];
 
		theOption.appendChild(theText);
		theSelect.appendChild(theOption);
	}
	
	menuItem.appendChild(theSelect);
	this.theList.appendChild(menuItem);
 
	return true;
}
 
 
 
 
/* Turn off toolbar items */
widgToolbar.prototype.disable = function()
{
	/* Change class to disable buttons using CSS */
	this.theList.className += " widgSource";
 
	/* Loop through lis */
	for (var i = 0; i < this.theList.childNodes.length; i++)
	{
		var theChild = this.theList.childNodes[i];
		
		if (theChild.nodeName.toLowerCase() == "li" && theChild.className == "widgEditSelect")
		{
			/* Loop through li children to find select */
			for (j = 0; j < theChild.childNodes.length; j++)
			{
				if (theChild.childNodes[j].nodeName.toLowerCase() == "select")
				{
					theChild.childNodes[j].disabled = "disabled";
					
					break;
				}
			}
		}
	}
	
	return true;
}
 
 
 
 
/* Turn on toolbar items */
widgToolbar.prototype.enable = function()
{
	/* Change class to enable buttons using CSS */
	this.theList.className = this.theList.className.replace(/ widgSource/, "");
	
	/* Loop through lis */
	for (var i = 0; i < this.theList.childNodes.length; i++)
	{
		var theChild = this.theList.childNodes[i];
		
		if (theChild.nodeName.toLowerCase() == "li" && theChild.className == "widgEditSelect")
		{
			/* Loop through li children to find select */
			for (j = 0; j < theChild.childNodes.length; j++)
			{
				if (theChild.childNodes[j].nodeName.toLowerCase() == "select")
				{
					theChild.childNodes[j].disabled = "";
					
					break;
				}
			}
		}
	}
	
	return true;
}
 
 
 
 
/* Change the status of the selected toolbar item */
widgToolbar.prototype.setState = function(theState, theStatus)
{
	if (theState != "SelectBlock")
	{
		var theButton = document.getElementById(this.theList.id + "Button" + theState);
	
		if (theButton != null)
		{
			if (theStatus == "on")
			{
				theButton.className = theButton.className.addClass("on");
			}
			else
			{
				theButton.className = theButton.className.removeClass("on");
			}
		}
	}
	else
	{
		var theSelect = document.getElementById(this.theList.id + "SelectBlock");
		
		if (theSelect != null)
		{
			theSelect.value = "";
			theSelect.value = theStatus;
		}
	}
			
	return true;	
}
 
 
 
 
 
/* Action taken when toolbar item activated */
function widgToolbarAction()
{
	var theToolbar = this.parentNode.parentNode.widgToolbarObject;
	var theWidgEditor = theToolbar.widgEditorObject;
	var theIframe = theWidgEditor.theIframe;
	var theSelection = "";
 
	/* If somehow a button other than "HTML source" is clicked while viewing HTML source, ignore click */	
	if (!theWidgEditor.wysiwyg && this.action != "html")
	{
		return false;
	}
	
	switch (this.action)
	{
		case "formatblock":
			theIframe.contentWindow.document.execCommand(this.action, false, this.value);
			
			theWidgEditor.theToolbar.setState("SelectBlock", this.value);
			
			break;
			
		case "html":
			theWidgEditor.switchMode();
			
			break;
			
		case "link":
			if (this.parentNode.className.classExists("on"))
			{
				theIframe.contentWindow.document.execCommand("Unlink", false, null);
				theWidgEditor.theToolbar.setState("Link", "off");
			}
			else
			{
				if (theIframe.contentWindow.document.selection)
				{
					theSelection = theIframe.contentWindow.document.selection.createRange().text;
 
					if (theSelection == "")
					{
						alert("Please select the text you wish to hyperlink.");
 
						break;
					}
				}
				else
				{
					theSelection = theIframe.contentWindow.getSelection();
 
					if (theSelection == "")
					{
						alert("Please select the text you wish to hyperlink.");
 
						break;
					}
				}
 
				var theURL = prompt("Enter the URL for this link:", "http://");
 
				if (theURL != null)
				{			
					theIframe.contentWindow.document.execCommand("CreateLink", false, theURL);
					theWidgEditor.theToolbar.setState("Link", "on");
				}
			}
			
			break;
			
		case "image":
			var theImage = prompt("Enter the location for this image:", "");
			
			if (theImage != null && theImage != "")
			{
				var theAlt = prompt("Enter the alternate text for this image:", "");
				var theSelection = null;
				var theRange = null;
				
				/* IE selections */
				if (theIframe.contentWindow.document.selection)
				{
					/* Escape quotes in alt text */
					theAlt = theAlt.replace(/"/g, "'");
			
					theSelection = theIframe.contentWindow.document.selection;
					theRange = theSelection.createRange();
					theRange.collapse(false);
					theRange.pasteHTML("<img alt=\"" + theAlt + "\" src=\"" + theImage + "\" />");
					
					break;
				}
				/* Mozilla selections */
				else
				{
					try
					{
						theSelection = theIframe.contentWindow.getSelection();
					}
					catch (e)
					{
						return false;
					}
 
					theRange = theSelection.getRangeAt(0);
					theRange.collapse(false);
					
					var theImageNode = theIframe.contentWindow.document.createElement("img");
					
					theImageNode.src = theImage;
					theImageNode.alt = theAlt;
					
					theRange.insertNode(theImageNode);
					
					break;
				}
			}
			else
			{
				return false;
			}
		
		default:
			theIframe.contentWindow.document.execCommand(this.action, false, null);
			
			var theAction = this.action.replace(/^./, function(match){return match.toUpperCase();});
 
			/* Turn off unordered toolbar item if ordered toolbar item was activated */	
			if (this.action == "insertorderedlist")
			{
				theAction = "Ordered";
				theWidgEditor.theToolbar.setState("Unordered", "off");
			}
			
			/* Turn off ordered toolbar item if unordered toolbar item was activated */	
			if (this.action == "insertunorderedlist")
			{
				theAction = "Unordered";
				theWidgEditor.theToolbar.setState("Ordered", "off");
			}
			
			/* If toolbar item was turned on */
			if (theIframe.contentWindow.document.queryCommandState(this.action, false, null))
			{
				theWidgEditor.theToolbar.setState(theAction, "on");
			}
			else
			{
				theWidgEditor.theToolbar.setState(theAction, "off");
			}
	}
	
	if (theWidgEditor.wysiwyg == true)
	{
		theIframe.contentWindow.focus();
	}
	else
	{
		theWidgEditor.theTextarea.focus();
	}
	
	return false;	
}
 
 
 
 
/* Check the nesting of the current cursor position/selection */
function widgToolbarCheckState(theWidgEditor, resubmit)
{
	if (!resubmit)
	{
		/* Allow browser to update selection before using the selection */
		setTimeout(function(){widgToolbarCheckState(theWidgEditor, true); return true;}, 500);
	}
	
	var theSelection = null;
	var theRange = null;
	var theParentNode = null;
	var theLevel = 0;
	
	/* Turn off all the buttons */
	var menuListItems = theWidgEditor.theToolbar.theList.childNodes;
	for (var i = 0; i < menuListItems.length; i++)
	{
		menuListItems[i].className = menuListItems[i].className.removeClass("on");
	}
	
	/* IE selections */
	if (theWidgEditor.theIframe.contentWindow.document.selection)
	{
		theSelection = theWidgEditor.theIframe.contentWindow.document.selection;
		theRange = theSelection.createRange();
		try
		{
			theParentNode = theRange.parentElement();
		}
		catch (e)
		{
			return false;
		}
	}
	/* Mozilla selections */
	else
	{
		try
		{
			theSelection = theWidgEditor.theIframe.contentWindow.getSelection();
		}
		catch (e)
		{
			return false;
		}
		
		theRange = theSelection.getRangeAt(0);
		theParentNode = theRange.commonAncestorContainer;
	}
	
	while (theParentNode.nodeType == 3)
	{
		theParentNode = theParentNode.parentNode;
	}
	
	while (theParentNode.nodeName.toLowerCase() != "body")
	{
		switch (theParentNode.nodeName.toLowerCase())
		{
			case "a":
				theWidgEditor.theToolbar.setState("Link", "on");
				
				break;
				
			case "em":
				theWidgEditor.theToolbar.setState("Italic", "on");
				
				break;
				
			case "li":
			
				break;
				
			case "ol":
				theWidgEditor.theToolbar.setState("Ordered", "on");
				theWidgEditor.theToolbar.setState("Unordered", "off");
				
				break;
				
			case "span":
				if (theParentNode.getAttribute("style") == "font-weight: bold;")
				{
					theWidgEditor.theToolbar.setState("Bold", "on");
				}
				else if (theParentNode.getAttribute("style") == "font-style: italic;")
				{
					theWidgEditor.theToolbar.setState("Italic", "on");
				}
				else if (theParentNode.getAttribute("style") == "font-weight: bold; font-style: italic;")
				{
					theWidgEditor.theToolbar.setState("Bold", "on");
					theWidgEditor.theToolbar.setState("Italic", "on");
				}
				else if (theParentNode.getAttribute("style") == "font-style: italic; font-weight: bold;")
				{
					theWidgEditor.theToolbar.setState("Bold", "on");
					theWidgEditor.theToolbar.setState("Italic", "on");
				}
				
				break;
			
			case "strong":
				theWidgEditor.theToolbar.setState("Bold", "on");
				
				break;
			
			case "ul":
				theWidgEditor.theToolbar.setState("Unordered", "on");
				theWidgEditor.theToolbar.setState("Ordered", "off");
				
				break;
			
			default:
				theWidgEditor.theToolbar.setState("SelectBlock", "<" + theParentNode.nodeName.toLowerCase() + ">");
			
				break;
		}
		
		theParentNode = theParentNode.parentNode;
		theLevel++;
	}
	
	return true;			
}
 
 
 
 
/* Turn off browser status display for toolbar items */
function widgToolbarMouseover()
{
	window.status = "";
	
	return true;
}
 
 
 
 
function acceptableChildren(theNode)
{
	var theChildren = theNode.childNodes;
	
	for (var i = 0; i < theChildren.length; i++)
	{
		if (!theChildren[i].nodeName.isAcceptedElementName())
		{
			if (!theChildren[i].nodeName.isInlineName())
			{
				if (theNode.nodeName.toLowerCase() == "p")
				{
					acceptableChildren(replaceNodeWithChildren(theNode));
					
					return true;
				}
				
				changeNodeType(theChildren[i], "p");
			}
			else
			{
				replaceNodeWithChildren(theChildren[i]);
			}
				
			i = -1;
		}
	}
	
	for (var i = 0; i < theChildren.length; i++)
	{
		acceptableChildren(theChildren[i]);
	}
	
	return true;
}
 
 
 
 
/* Change the type of a node, e.g. h3 to p */
function changeNodeType(theNode, nodeType)
{
	var theChildren = new Array();
	var theNewNode = document.createElement(nodeType);
	var theParent = theNode.parentNode;
	
	if (theParent != null)
	{
		for (var i = 0; i < theNode.childNodes.length; i++)
		{
			theChildren.push(theNode.childNodes[i].cloneNode(true));
		}
		
		for (var i = 0; i < theChildren.length; i++)
		{
			theNewNode.appendChild(theChildren[i]);
		}
		
		theParent.replaceChild(theNewNode, theNode);
	}
	
	return true;
}
 
 
 
 
/* Replace a node with its children -- delete the item and move its children up one level in the hierarchy */
function replaceNodeWithChildren(theNode)
{
	var theChildren = new Array();
	var theParent = theNode.parentNode;
	
	if (theParent != null)
	{
		for (var i = 0; i < theNode.childNodes.length; i++)
		{
			theChildren.push(theNode.childNodes[i].cloneNode(true));
		}
		
		for (var i = 0; i < theChildren.length; i++)
		{
			theParent.insertBefore(theChildren[i], theNode);
		}
		
		theParent.removeChild(theNode);
		
		return theParent;
	}
	
	return true;
}
 
 
 
 
/* Add a class to a string */
String.prototype.addClass = function(theClass)
{
	if (this != "")
	{
		if (!this.classExists(theClass))
		{
			return this + " " + theClass;
		}
	}
	else
	{
		return theClass;
	}
	
	return this;
}
 
 
 
 
/* Check if a class exists in a string */
String.prototype.classExists = function(theClass)
{
	var regString = "(^| )" + theClass + "\W*";
	var regExpression = new RegExp(regString);
	
	if (regExpression.test(this))
	{
		return true;
	}
	
	return false;
}
 
 
 
 
/* Check if a string is the nodeName of an accepted element */
String.prototype.isAcceptedElementName = function()
{
	var elementList = new Array("#text", "a", "em", "h1", "h2", "h3", "h4", "h5", "h6", "img", "li", "ol", "p", "strong", "ul");
	var theName = this.toLowerCase();
	
	for (var i = 0; i < elementList.length; i++)
	{
		if (theName == elementList[i])
		{
			return true;
		}
	}
	
	return false;
}
 
 
 
 
/* Check if a string is the nodeName of an inline element */
String.prototype.isInlineName = function()
{
	var inlineList = new Array("#text", "a", "em", "font", "span", "strong", "u");
	var theName = this.toLowerCase();
	
	for (var i = 0; i < inlineList.length; i++)
	{
		if (theName == inlineList[i])
		{
			return true;
		}
	}
	
	return false;
}
 
 
 
 
/* Remove a class from a string */
String.prototype.removeClass = function(theClass)
{
	var regString = "(^| )" + theClass + "\W*";
	var regExpression = new RegExp(regString);
	
	return this.replace(regExpression, "");
}
 
 
 
 
/* Reverse a string */
String.prototype.reverse = function()
{
	var theString = "";
	
	for (var i = this.length - 1; i >= 0; i--)
	{
		theString += this.charAt(i);
	}
	
	return theString;
}
 
 
 
 
/* Make tags valid by converting uppercase element and attribute names to lowercase and quoting attributes */
String.prototype.validTags = function()
{
	var theString = this;
	
	/* Replace uppercase element names with lowercase */
	theString = theString.replace(/<[^> ]*/g, function(match){return match.toLowerCase();});
	
	/* Replace uppercase attribute names with lowercase */
	theString = theString.replace(/<[^>]*>/g, function(match)
		{
			match = match.replace(/ [^=]+=/g, function(match2){return match2.toLowerCase();});
 
			return match;
		});
			
	/* Put quotes around unquoted attributes */
	theString = theString.replace(/<[^>]*>/g, function(match)
		{
			match = match.replace(/( [^=]+=)([^"][^ >]*)/g, "$1\"$2\"");
			
			return match;
		});
		
	return theString;
}
 
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[+][-]04.07.2008 at 10:35AM PDT, ID: 21298936

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[+][-]04.07.2008 at 10:39AM PDT, ID: 21298975

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[+][-]04.07.2008 at 11:00AM PDT, ID: 21299121

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[+][-]04.07.2008 at 11:02AM PDT, ID: 21299134

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[+][-]04.07.2008 at 11:14AM PDT, ID: 21299265

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[+][-]04.07.2008 at 11:30AM PDT, ID: 21299420

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[+][-]04.07.2008 at 12:14PM PDT, ID: 21299700

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[+][-]04.07.2008 at 02:40PM PDT, ID: 21300807

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About this solution

Zone: JavaScript
Tags: Java Script
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Solution Provided By: b0lsc0tt
Participating Experts: 2
Solution Grade: B
 
 
[+][-]05.24.2008 at 04:55PM PDT, ID: 21640644

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20080716-EE-VQP-32 / EE_QW_2_20070628