//
// htmlArea v3.0 - Copyright (c) 2002 interactivetools.com, inc.
// This copyright notice MUST stay intact for use (see license.txt).
//
// A free WYSIWYG editor replacement for <textarea> fields.
// For full source code and docs, visit http://www.interactivetools.com/
//
// Version 3.0 developed by Mihai Bazon for InteractiveTools.
//           http://students.infoiasi.ro/~mishoo
//
// $Id: htmlarea.js,v 1.3 2003/02/17 13:57:07 mishoo Exp $

/*
	2001-07-27 Seth Dillingham:
		Added safari and Firebird to the rejected browsers
	
	2005-03-09 Seth Dillingham:
		Cleaned up, eliminated all warnings and errors
	
	2006-05-01 Seth Dillingham:
		Added support for Safari 1.3+
	
	2007-02-15 Seth Dillingham:
		No longer add whitespace when getting the HTML. That was a hack,
		it's better to do it in Conversant on an as-needed basis.
*/


// Creates a new HTMLArea object.  Tries to replace the textarea with the given
// ID with it.
function HTMLArea(textarea, config)
{
	if (HTMLArea.checkSupportedBrowser())
	{
		if (typeof config == "undefined")
			this.config = new HTMLArea.Config();
		else
			this.config = config;
		
		if (this.config.debug) {
			// alert("DEBUG ON!!");
		}
		
		this._htmlArea = null;
		this._textArea = textarea;
		this._mode = "wysiwyg";
	}
}

/** Helper function: replace all TEXTAREA-s in the document with HTMLArea-s. */
HTMLArea.replaceAll = function() {
	var tas = document.getElementsByTagName("textarea");
	for (var i = tas.length; i > 0; (new HTMLArea(tas[--i])).generate());
};

// Creates the toolbar and appends it to the _htmlarea
HTMLArea.prototype._createToolbar = function () {
	var editor = this;	// to access this in nested functions
	var toolbar = document.createElement("div");
	
	this._toolbar = toolbar;
	toolbar.className = "toolbar";
	toolbar.unselectable = "1";
	
	if (editor.config.debug)
		toolbar.style.border = "1px solid red";
	
	var tb_row = null;
	var tb_objects = new Object();
	this._toolbarObjects = tb_objects;

	// creates a new line in the toolbar
	function newLine() {
		var table = document.createElement("table");
		table.border = "0px";
		table.cellSpacing = "0px";
		table.cellPadding = "0px";
		toolbar.appendChild(table);
		// TBODY is required for IE, otherwise you don't see anything
		// in the TABLE.
		var tb_body = document.createElement("tbody");
		table.appendChild(tb_body);
		tb_row = document.createElement("tr");
		tb_body.appendChild(tb_row);
	};
	// init first line
	newLine();

	// appends a new button to toolbar
	function createButton(txt) {
		// updates the state of a toolbar element
		function setButtonStatus(id, newval) {
			var oldval = this[id];
			var el = this.element;
			
			if (oldval != newval)
			{
				switch (id)
				{
				    case "enabled":
						if (newval) {
							HTMLArea._removeClass(el, "buttonDisabled");
							el.disabled = false;
						} else {
							HTMLArea._addClass(el, "buttonDisabled");
							el.disabled = true;
						}
						break;
				    case "active":
						if (newval) {
							HTMLArea._addClass(el, "buttonPressed");
						} else {
							HTMLArea._removeClass(el, "buttonPressed");
						}
						break;
				}
				this[id] = newval;
			}
		}
		
		// this function will handle creation of combo boxes
		function createSelect() {
			var options = null;
			var el = null;
			var cmd = null;
			
			switch (txt) {
			    case "fontsize":
			    case "fontname":
			    case "formatblock":
					options = editor.config[txt]; // HACK ;)
					cmd = txt;
					break;
			}
			if (options)
			{
				el = document.createElement("select");
				var obj = {
					name: txt,     // field name
					element: el,   // the UI element (SELECT)
					enabled: true, // is it enabled?
					text: false,   // enabled in text mode?
					cmd: cmd,      // command ID
					state: setButtonStatus // for changing state
				};
				tb_objects[txt] = obj;
				
				for (var i in options)
				{
					var op = document.createElement("option");
					
					op.appendChild(document.createTextNode(i));
					op.value = options[i];
					el.appendChild(op);
				}
				
				HTMLArea._addEvent(el, "change", function ()
				{
					editor._comboSelected(el, txt);
				});
			}
			return el;
		}
		
		// the element that will be created
		var el = null;
		var btn = null;
		var obj;
		switch (txt) {
		    case "separator":
				el = document.createElement("div");
				el.className = "separator";
				break;
		    case "space":
				el = document.createElement("div");
				el.className = "space";
				break;
		    case "linebreak":
				newLine();
				return false;
		    case "textindicator":
				el = document.createElement("div");
				el.appendChild(document.createTextNode("A"));
				el.className = "indicator";
				el.title = HTMLArea.I18N.tooltips.textindicator;
				
				obj = {
					name: txt,     // the button name (i.e. 'bold')
					element: el,   // the UI element (DIV)
					enabled: true, // is it enabled?
					active: false, // is it pressed?
					text: false,   // enabled in text mode?
					cmd: "textindicator", // the command ID
					state: setButtonStatus // for changing state
				};
				tb_objects[txt] = obj;
				break;
		    default:
				btn = editor.config.btnList[txt];
				break;
		}
		
		if (!el && btn)
		{
			el = document.createElement("div");
			el.title = btn[1];
			el.className = "button";
			
			// let's just pretend we have a button object, and
			// assign all the needed information to it.
			obj = {
				name: txt,     // the button name (i.e. 'bold')
				element: el,   // the UI element (DIV)
				enabled: true, // is it enabled?
				active: false, // is it pressed?
				text: btn[3],  // enabled in text mode?
				cmd: btn[0],   // the command ID
				state: setButtonStatus // for changing state
			};
			tb_objects[txt] = obj;
			
			// handlers to emulate nice flat toolbar buttons
			HTMLArea._addEvent(el, "mouseover", function () {
				if (obj.enabled)
					HTMLArea._addClass(el, "buttonHover");
			});
			
			HTMLArea._addEvent(el, "mouseout", function () {
				if (obj.enabled)
				{
					HTMLArea._removeClass(el, "buttonHover");
					HTMLArea._removeClass(el, "buttonActive");
					(obj.active) && HTMLArea._addClass(el, "buttonPressed");
				}
			});
			
			HTMLArea._addEvent(el, "mousedown", function (ev) {
				if (obj.enabled)
				{
					HTMLArea._addClass(el, "buttonActive");
					HTMLArea._removeClass(el, "buttonPressed");
					HTMLArea._stopEvent(HTMLArea.is_ie ? window.event : ev);
				}
			});
			
			// when clicked, do the following:
			HTMLArea._addEvent(el, "click", function (ev) {
				if (obj.enabled)
				{
					HTMLArea._removeClass(el, "buttonActive");
					HTMLArea._removeClass(el, "buttonHover");
					editor._buttonClicked(txt);
					HTMLArea._stopEvent(HTMLArea.is_ie ? window.event : ev);
				}
			});
			
			var img = document.createElement("img");
			img.src = editor.imgURL(btn[2]);
			el.appendChild(img);
		}
		else if (!el)
		{
			el = createSelect();
		}
		
		if (el)
		{
			var tb_cell = document.createElement("td");
			tb_row.appendChild(tb_cell);
			tb_cell.appendChild(el);
		}
		else
		{
			alert("FIXME: Unknown toolbar item: " + txt);
		}
		return el;
	};

	// 20051109smd: replaced "for (var i in _____)" format with this format
	// for Prototype.js compatibility (or anything else which extends arrays)
	for (var i = 0; i < this.config.toolbar.length; i++)
	{
		var group = this.config.toolbar[i];
		for (var j = 0; j < group.length; j++)
		{
			createButton(group[j]);
		}
	}

	this._htmlArea.appendChild(toolbar);
};

// Creates the HTMLArea object and replaces the textarea with it.
HTMLArea.prototype.generate = function () {
	var editor = this;	// we'll need "this" in some nested functions
	
	// get the textarea
	var textarea = this._textArea;
	if (typeof textarea == "string") {
		// it's not element but ID
		this._name = textarea;
		this._textArea = textarea = document.getElementById(textarea);
	}
	else
		this._name = textarea.id ? textarea.id : textarea.name;
	
	if ( ! textarea )
		return;
	
	this._ta_size = {
		w: textarea.offsetWidth,
		h: textarea.offsetHeight
	};
	this._ta_style_width  = HTMLArea.getComputedStyle( textarea, 'width' );
	this._ta_style_height = HTMLArea.getComputedStyle( textarea, 'height' );
	
	// hide the textarea
	textarea.style.display = "none";

	// create the editor framework
	var htmlarea = document.createElement("div");
	htmlarea.className = "htmlarea";
	this._htmlArea = htmlarea;

	// insert the editor before the textarea.
	textarea.parentNode.insertBefore(htmlarea, textarea);
	
	// retrieve the HTML on submit
	HTMLArea._addEvent(textarea.form, "submit", function (event)
	{
		editor._formSubmit(HTMLArea.is_ie ? window.event : event);
	});

	// creates & appends the toolbar
	this._createToolbar();

	// create the IFRAME
	var iframe = document.createElement("iframe");
	htmlarea.appendChild(iframe);
	this._iframe = iframe;

	// remove the default border as it keeps us from computing correctly
	// the sizes.  (somebody tell me why doesn't this work in IE)
	// iframe.style.border = "none";
	// iframe.frameborder = "0";

	// size the IFRAME according to user's prefs or initial textarea
	var height = (this.config.height == "auto" ? (this._ta_size.h + "px") : this.config.height);
	height = parseInt(height);
	
	var width = (this.config.width == "auto" ? (this._ta_size.w + "px") : this.config.width);
	width = parseInt(width);
	
	if ( this._ta_style_width )
		iframe.style.width = this._ta_style_width;
	else
		iframe.style.width = width + "px";
	
	if (this.config.sizeIncludesToolbar) {
		// substract toolbar height
		height -= this._toolbar.offsetHeight;
	}
	iframe.style.height = height + "px";

	// now create a secondary textarea so that we can switch between
	// WYSIWYG & text mode.
	textarea = document.createElement("textarea");

	// hidden by default
	textarea.style.display = "none";

	// make it the same size as the editor
	textarea.style.width = iframe.style.width;
	textarea.style.height = iframe.style.height;

	// insert it after the iframe
	htmlarea.appendChild(textarea);

	// remember it for later
	this._textArea2 = textarea;

	// IMPORTANT: we have to allow Mozilla a short time to recognize the
	// new frame.  Otherwise we get a stupid exception.
	function initIframe( editorName ) {
		var doc = editor._iframe.contentWindow.document;
		if (!doc)
		{
			if (HTMLArea.is_gecko)  // FIXME: seems this could cause an infinite loop
			{
				// setTimeout(function () { editor._initIframe(); }, 10);
				setTimeout( "editors['" + editorName + "']._initIframe()", 10 );
			}
			else
				alert("ERROR: IFRAME can't be initialized.");
			
			return;
		}
		
		WRITE_DOCUMENT: {
			var defaultDocumentTemplate = "<html>\n"
				+ "<head>\n"
				+ "<meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\" />"
				+ "<style> body { [[htmlareaBodyStyle]] } </style>\n"
				+ "[[htmlareaDocStylesheetLink]]\n"
				+ "</head>\n"
				+ "<body>\n"
				+ "[[htmlareaTextareaContent]]"
				+ "</body>\n"
				+ "</html>";
			
			var s = editor.config.documentTemplate ? editor.config.documentTemplate : defaultDocumentTemplate;
			var ssLinkTag = "";
			
			s = s.replace( /\[\[htmlareaBodyStyle\]\]/, editor.config.bodyStyle );
			
			if ( editor.config.editorDocStylesheetUrl )
				ssLinkTag = '<link rel="stylesheet" type="text/css" href="' + editor.config.editorDocStylesheetUrl + '" />\n';
			
			s = s.replace( /\[\[htmlareaDocStylesheetLink\]\]/, ssLinkTag );
			
			doc.open();
			
			doc.write( s.replace( /\[\[htmlareaTextareaContent\]\]/, editor._textArea.value ) );
			
			doc.close();
		}
		
		if ( HTMLArea.is_gecko )
		{
			// enable editable mode for Mozilla
			doc.designMode = "on";
		}
		editor._doc = doc;
		
		if (HTMLArea.is_ie) {
			// enable editable mode for IE.  For some reason this
			// doesn't work if done in the same place as for Gecko
			// (above).
			doc.body.contentEditable = true;
		}

		editor.focusEditor();
		
		// intercept some events; for updating the toolbar & keyboard handlers
		HTMLArea._addEvents
			(doc, ["keydown", "keypress", "mousedown", "mouseup", "drag"],
			 function (event) {
				 return editor._editorEvent(HTMLArea.is_ie ? editor._iframe.contentWindow.event : event);
			 });
		editor.updateToolbar();
		editor.focusEditor();
	};
	setTimeout( initIframe, HTMLArea.is_gecko ? 10 : 0);
};

// Switches editor mode; parameter can be "textmode" or "wysiwyg"
HTMLArea.prototype.setMode = function(mode) {
	switch (mode) {
	    case "textmode":
			this._textArea2.value = this.getHTML();
			this._iframe.style.display = "none";
			this._textArea2.style.display = "block";
			break;
	    case "wysiwyg":
			this._doc.body.innerHTML = this.getHTML();
			this._iframe.style.display = "";
			this._textArea2.style.display = "none";
			if (HTMLArea.is_gecko) {
				// we need to refresh that info for Moz-1.3a
				this._doc.designMode = "on";
			}
			break;
	    default:
			alert("Mode <" + mode + "> not defined!");
			return;
	}
	this._mode = mode;
	this.focusEditor();
};

/***************************************************
 *  Category: EDITOR UTILITIES
 ***************************************************/

// focuses the iframe window.  returns a reference to the editor document.
HTMLArea.prototype.focusEditor = function() {
	switch (this._mode) {
	    case "wysiwyg":
			this._iframe.contentWindow.focus();
			break;
	    case "textmode":
			this._textArea2.focus();
			break;
	    default:
			alert("ERROR: mode " + this._mode + " is not defined");
			break;
	}
	return this._doc;
};

// updates enabled/disable/active state of the toolbar elements
HTMLArea.prototype.updateToolbar = function() {
	var doc = this._doc;
	var text = (this._mode == "textmode");
	for (var i in this._toolbarObjects)
	{
		var btn = this._toolbarObjects[i];
		var cmd = btn.cmd;
		
		if (typeof cmd != "string")
			continue;
		
		cmd = cmd.toLowerCase();
		btn.state("enabled", !text || btn.text);
		
		switch (cmd)
		{
		    case "fontname":
		    case "fontsize":
		    case "formatblock":
				if (!text)
				{
					var value = ("" + doc.queryCommandValue(cmd)).toLowerCase();
					
					if (!value) {
						// FIXME: what do we do here?
						break;
					}
					
					var options = this.config[i]; // HACK!!
					var k = 0;
					
					// btn.element.selectedIndex = 0;
					for (var j in options)
					{
						// FIXME: the following line is scary.
						if (( typeof( options[j] ) == "string" ) && ((j.toLowerCase() == value) ||
							(options[j].substr(0, value.length).toLowerCase() == value))) {
							btn.element.selectedIndex = k;
							break;
						}
						++k;
					}
				}
				break;
		    case "textindicator":
				if (!text) {
					try
					{
						var bes = btn.element.style;
						
						bes.backgroundColor = HTMLArea._makeColor(doc.queryCommandValue("backcolor"));
						bes.color = HTMLArea._makeColor(doc.queryCommandValue("forecolor"));
						bes.fontFamily = doc.queryCommandValue("fontname");
						bes.fontWeight = doc.queryCommandState("bold") ? "bold" : "normal";
						bes.fontStyle = doc.queryCommandState("italic") ? "italic" : "normal";
					}
					catch (e) { alert(e + "\n\n" + cmd); }
				}
				break;
		    case "htmlmode":
				btn.state("active", text);
				break;
		    default:
				try
				{
					btn.state("active", (!text && doc.queryCommandState(cmd)));
				} catch (e) {}
			break;
		}
	}
};

/** Returns a node after which we can insert other nodes, in the current
 * selection.  The selection is removed.  It splits a text node, if needed.
 */
HTMLArea.prototype.insertNodeAtSelection = function(toBeInserted) {
	if ( ! HTMLArea.is_ie )
	{
		var sel = this._getSelection();
		var range = this._createRange( sel );
		
		// remove the current selection
		sel.removeAllRanges();
		range.deleteContents();
		
		var node = range.startContainer;
		var pos = range.startOffset;
		
		range = this._createRange();
		
		switch (node.nodeType)
		{
		    case 3: // Node.TEXT_NODE
				// we have to split it at the caret position.
				if (toBeInserted.nodeType == 3)
				{
					// do optimized insertion
					node.insertData(pos, toBeInserted.data);
					range.setEnd(node, pos + toBeInserted.length);
					range.setStart(node, pos + toBeInserted.length);
				}
				else
				{
					node = node.splitText(pos);
					node.parentNode.insertBefore(toBeInserted, node);
					range.setStart(node, 0);
					range.setEnd(node, 0);
				}
				break;
		    case 1: // Node.ELEMENT_NODE
		    	if ( node.childNodes[pos] )
					node = node.childNodes[pos];
				
				node.parentNode.insertBefore(toBeInserted, node);
				range.setStart(node, 0);
				range.setEnd(node, 0);
				break;
		}
		sel.addRange(range);
	}
	else
	{
		return; // null;	// this function not yet used for IE <FIXME>
	}
};

/** Call this function to insert HTML code at the current position.  It deletes
 * the selection, if any.
 */
HTMLArea.prototype.insertHTML = function(html) {
	var sel = this._getSelection();
	var range = this._createRange(sel);
	
	if (HTMLArea.is_ie)
	{
		range.pasteHTML(html);
	}
	else
	{
		// construct a new document fragment with the given HTML
		var fragment = this._doc.createDocumentFragment();
		var div = this._doc.createElement("div");
		
		div.innerHTML = html;
		
		while (div.firstChild)
		{
			// the following call also removes the node from div
			fragment.appendChild(div.firstChild);
		}
		
		// this also removes the selection
		//var node =
		this.insertNodeAtSelection(fragment);
	}
};

/**
 *  Call this function to surround the existing HTML code in the selection with
 *  your tags.
 */
HTMLArea.prototype.surroundHTML = function(startTag, endTag) {
	var html = this.getSelectedHTML();
	// the following also deletes the selection
	this.insertHTML(startTag + html + endTag);
};

/// Retrieve the selected block
HTMLArea.prototype.getSelectedHTML = function() {
	var sel = this._getSelection();
	var range = this._createRange(sel);
	var existing = null;
	
	if (HTMLArea.is_ie)
		existing = range.htmlText;
	else
		existing = HTMLArea.getHTML(range.cloneContents(), false);
	
	return existing;
};

// Called when the user clicks on "InsertImage" button
HTMLArea.prototype._insertImage = function() {
	var sel = this._getSelection();
	var range = this._createRange(sel);
	var editor = this;	// for nested functions
	var popurl = ( typeof this.config.insertImagePopupURL == "undefined" ) ?
	                 "insert_image.html"
	               : this.config.insertImagePopupURL;
	
	this._popupDialog( popurl, function(param) {
		if (!param)	// user must have pressed Cancel
			return;
		
		editor._execCommand("insertimage", false, param["f_url"]);
		
		var img = null;
		
		if (HTMLArea.is_ie)
		{
			img = range.parentElement();
			// wonder if this works...
			
			if (img.tagName.toLowerCase() != "img")
				img = img.previousSibling;
		}
		else
			img = range.startContainer.previousSibling;
		
		for (field in param)
		{
			var value = param[field];
			if (!value)
				continue;
			
			switch (field)
			{
				case "f_alt":
					img.alt = value;
					break;
				case "f_border":
					img.border = parseInt(value);
					break;
				case "f_align":
					img.align = value;
					break;
				case "f_vert":
					img.vspace = parseInt(value);
					break;
				case "f_horiz":
					img.hspace = parseInt(value);
					break;
			}
		}
	}, null);
};

// Called when the user clicks the Insert Table button
HTMLArea.prototype._insertTable = function() {
	var sel = this._getSelection();
	var range = this._createRange(sel);
	var editor = this;	// for nested functions
	
	this._popupDialog("insert_table.html", function(param) {
		if (!param)	// user must have pressed Cancel
			return false;
		
		
		var doc = editor._doc;
		
		// create the table element
		var table = doc.createElement("table");
		
		// assign the given arguments
		for (var field in param)
		{
			var value = param[field];
			
			if (!value)
				continue;
			
			switch (field)
			{
			    case "f_width":
					table.style.width = value + param["f_unit"];
					break;
			    case "f_align":
					table.align = value;
					break;
			    case "f_border":
					table.border = parseInt(value);
					break;
			    case "f_spacing":
					table.cellspacing = parseInt(value);
					break;
			    case "f_padding":
					table.cellpadding = parseInt(value);
					break;
			}
		}
		
		var tbody = doc.createElement("tbody");
		
		table.appendChild(tbody);
		
		for (var i = 0; i < param["f_rows"]; ++i)
		{
			var tr = doc.createElement("tr");
			
			tbody.appendChild(tr);
			
			for (var j = 0; j < param["f_cols"]; ++j)
			{
				var td = doc.createElement("td");
				
				tr.appendChild(td);
				if (HTMLArea.is_gecko)
				{
					// Mozilla likes to see something
					// inside the cell.
					td.appendChild(doc.createElement("br"));
				}
			}
		}
		
		if (HTMLArea.is_ie)
		{
			range.pasteHTML(HTMLArea.getHTML(table, true));
		}
		else
		{
			// insert the table
			editor.insertNodeAtSelection(table);
		}
		return true;
	}, null);
};

/***************************************************
 *  Category: EVENT HANDLERS
 ***************************************************/

// txt is the name of the button, as in config.toolbar
HTMLArea.prototype._buttonClicked = function(txt) {
	var editor = this;	// needed in nested functions
	
	this.focusEditor();
	
	var btn = this.config.btnList[txt];
	
	if (!btn) {
		alert("FIXME: Unconfigured button!");
		return false;
	}
	
	var cmd = btn[0];
	
	if (typeof cmd == "function")
		return cmd(this, txt);
	
	switch (cmd.toLowerCase()) {
	    case "htmlmode":
			this.setMode(this._mode != "textmode" ? "textmode" : "wysiwyg");
			break;
	    case "forecolor":
	    case "backcolor":
			this._popupDialog("select_color.html", function(color)
			{
				editor._execCommand(cmd, false, "#" + color);
			}, HTMLArea._colorToRgb(this._doc.queryCommandValue(btn[0])));
			break;
	    case "createlink":
			this._execCommand(cmd, true);
			break;
	    case "insertimage":
			this._insertImage();
			break;
	    case "inserttable":
			this._insertTable();
			break;
	    case "popupeditor":
			if (HTMLArea.is_ie)
			{
				window.open(this.popupURL("fullscreen.html"), "ha_fullscreen",
						"toolbar=no,location=no,directories=no,status=yes,menubar=no," +
						"scrollbars=no,resizable=yes,width=640,height=480");
			}
			else
			{
				window.open(this.popupURL("fullscreen.html"), "ha_fullscreen",
						"toolbar=no,menubar=no,personalbar=no,width=640,height=480," +
						"scrollbars=no,resizable=yes");
			}
			// pass this object to the newly opened window
			HTMLArea._object = this;
			break;
	    case "about":
			this._popupDialog("about.html", null, null);
			break;
	    case "help":
			alert("Help not implemented");
			break;
	    default:
			this._execCommand(btn[0], false, "");
			break;
	}
	this.updateToolbar();
	return false;
};

// el is reference to the SELECT object
// txt is the name of the select field, as in config.toolbar
HTMLArea.prototype._comboSelected = function(el, txt) {
	this.focusEditor();
	
	var value = el.options[el.selectedIndex].value;
	
	switch (txt) {
	    case "fontname":
	    case "fontsize":
			this._execCommand(txt, false, value);
			break;
	    case "formatblock":
			if (HTMLArea.is_ie) { // sad but true
				value = "<" + value + ">";
			}
			this._execCommand(txt, false, value);
			break;
	    default:
			alert("FIXME: combo box " + txt + " not implemented");
			break;
	}
};

// the execCommand function (intercepts some commands and replaces them with
// our own implementation)
HTMLArea.prototype._execCommand = function(cmdID, UI, param) {
	switch (cmdID.toLowerCase()) {
	    case "createlink":
			if (HTMLArea.is_ie || !UI) {
				this._doc.execCommand(cmdID, UI, param);
			} else {
				// browser is Mozilla & wants UI
				if ((param = prompt("Enter URL"))) {
					this._doc.execCommand(cmdID, false, param);
				}
			}
			break;
	    case "backcolor":
			if (HTMLArea.is_ie) {
				this._doc.execCommand(cmdID, UI, param);
			} else {
				this._doc.execCommand("hilitecolor", UI, param);
			}
			break;
	    default:
		this._doc.execCommand(cmdID, UI, param);
		break;
	}
	this.focusEditor();
};

/** A generic event handler for things that happen in the IFRAME's document.
 * This function also handles key bindings. */
HTMLArea.prototype._editorEvent = function(ev) {
	var editor = this;
	var keyEvent = (HTMLArea.is_ie && ev.type == "keydown") || (ev.type == "keypress");
	
	if (keyEvent && ev.ctrlKey)
	{
		var sel = null;
		var range = null;
		var key = String.fromCharCode(HTMLArea.is_ie ? ev.keyCode : ev.charCode).toLowerCase();
		var cmd = null;
		var value = null;
		
		switch (key)
		{
		    case 'a':
				if (!HTMLArea.is_ie) {
					// KEY select all
					sel = this._getSelection();
					sel.removeAllRanges();
					range = this._createRange();
					range.selectNodeContents(this._doc.body);
					sel.addRange(range);
					HTMLArea._stopEvent(ev);
				}
				break;

			// simple key commands follow

		    case 'b':	// KEY bold
				(!HTMLArea.is_ie) && (cmd = "bold");
				break;
		    case 'i':	// KEY italic
				(!HTMLArea.is_ie) && (cmd = "italic");
				break;
		    case 'u':	// KEY underline
				(!HTMLArea.is_ie) && (cmd = "underline");
				break;
		    case 's':	// KEY justify full
				cmd = "strikethrough";
				break;
		    case 'l':	// KEY justify left
				cmd = "justifyleft";
				break;
		    case 'e':	// KEY justify center
				cmd = "justifycenter";
				break;
		    case 'r':	// KEY justify right
				cmd = "justifyright";
				break;
		    case 'j':	// KEY justify full
				cmd = "justifyfull";
				break;

			// headings
		    case '1':	// KEY heading 1
		    case '2':	// KEY heading 2
		    case '3':	// KEY heading 3
		    case '4':	// KEY heading 4
		    case '5':	// KEY heading 5
		    case '6':	// KEY heading 6
				cmd = "formatblock";
				value = "h" + key;
				if (HTMLArea.is_ie) {
					value = "<" + value + ">";
				}
				break;
		}
		
		if (cmd)
		{
			// execute simple command
			this._execCommand(cmd, false, value);
			HTMLArea._stopEvent(ev);
		}
	}
	/*
	else if (keyEvent) {
		// other keys here
		switch (ev.keyCode) {
		    case 13: // KEY enter
			// if (HTMLArea.is_ie) {
			this.insertHTML("<br />");
			HTMLArea._stopEvent(ev);
			// }
			break;
		}
	}
	*/
	// update the toolbar state after some time
	setTimeout( "window.editors['" + this._name + "'].updateToolbar()", 50);
};

// gets called before the form is submitted
HTMLArea.prototype._formSubmit = function(ev) {
	// retrieve the HTML
	if ( HTMLArea.is_safari )
		// this._textArea.innerText = this.getHTML();
		this._textArea.value = this.getHTML();
	else
		this._textArea.value = this.getHTML();
	
	// if the content is just a line break tag, then just submit the empty string
	// because those tags are added by mozilla
	if ( this._textArea.value.match( /^<br ?\/?>\n?$/ig ) )
		this._textArea.value = "";
	
	return true;
};

// retrieve the HTML
HTMLArea.prototype.getHTML = function() {
	switch (this._mode) {
	    case "wysiwyg":
			// return HTMLArea.addWhiteSpace( HTMLArea.getHTML(this._doc.body, false) );
			return HTMLArea.getHTML(this._doc.body, false);
	    case "textmode":
			// return HTMLArea.addWhiteSpace( this._textArea2.value );
			return this._textArea2.value;
	    default:
			alert("Mode <" + mode + "> not defined!");
			return false;
	}
};

// retrieve the HTML (fastest version, but uses innerHTML)
HTMLArea.prototype.getInnerHTML = function() {
	switch (this._mode) {
	    case "wysiwyg":
			return this._doc.body.innerHTML;
	    case "textmode":
			return this._textArea2.value;
	    default:
			alert("Mode <" + mode + "> not defined!");
			return false;
	}
};

// completely change the HTML inside
HTMLArea.prototype.setHTML = function(html) {
	switch (this._mode) {
	    case "wysiwyg":
			this._doc.body.innerHTML = html;
			break;
	    case "textmode":
			this._textArea2.value = html;
			break;
	    default:
			alert("Mode <" + mode + "> not defined!");
	}
	return false;
};

/***************************************************
 *  Category: UTILITY FUNCTIONS
 ***************************************************/

// browser identification

HTMLArea.agt = navigator.userAgent.toLowerCase();
HTMLArea.is_ie     = ((HTMLArea.agt.indexOf("msie") != -1) && (HTMLArea.agt.indexOf("opera") == -1));
HTMLArea.is_opera  = (HTMLArea.agt.indexOf("opera") != -1);
HTMLArea.is_mac    = (HTMLArea.agt.indexOf("mac") != -1);
HTMLArea.is_mac_ie = (HTMLArea.is_ie && HTMLArea.is_mac);
HTMLArea.is_win_ie = (HTMLArea.is_ie && !HTMLArea.is_mac);
HTMLArea.is_gecko  = (navigator.product == "Gecko");
HTMLArea.is_safari = (HTMLArea.is_gecko && (HTMLArea.agt.indexOf("khtml") != -1));
if (HTMLArea.is_safari) {HTMLArea.is_gecko=false;}

// variable used to pass the object to the popup editor window.
HTMLArea._object = null;

// FIXME!!! this should return false for IE < 5.5
HTMLArea.checkSupportedBrowser = function() {
	if ( HTMLArea.is_mac_ie )
		return false;
	
	if (HTMLArea.is_safari && ( navigator.productSub >= 20030107 ) )
	{
		HTMLArea.is_gecko = true;
		return true;
	}
	
	if (HTMLArea.is_gecko)
	{
		if (HTMLArea.agt.indexOf("firebird") != -1) {
			if ( navigator.productSub < 20030728 ) {
				return false;
			}
		}
		if (navigator.productSub < 20021201) {
			alert("You need at least Mozilla-1.3 Alpha.\n" +
			      "Sorry, your Gecko is not supported.");
			return false;
		}
		if (navigator.productSub < 20030210) {
			alert("Mozilla < 1.3 Beta is not supported!\n" +
			      "I'll try, though, but it might not work.");
		}
	}
	return HTMLArea.is_gecko || HTMLArea.is_ie;
};

HTMLArea.addWhiteSpace = function( txt ) {
	txt = txt.replace( /(^|[^\r\n\t])(&lt;|<)(br ?|p>|p&gt;|pre|hr ?|h[12345]|table|tr|th|div|ul|ol|li)/gi, "$1\n$2$3" );
	
	if ( txt.substring( 0, 2 ) == "\n<" )
	{
		return txt.substr( 1, Number.MAX_VALUE );
	}
	else
	{
		return txt;
	}
};

HTMLArea.getComputedStyle = function( el, styleName ) {
	if ( el.style[ styleName ] )
		return el.style[ styleName ];
	
	if ( window.getComputedStyle )
		return window.getComputedStyle( el, null )[ styleName ];
	
	if ( document.defaultView && document.defaultView.getComputedStyle )
		return document.defaultView.getComputedStyle( el, null )[ styleName ];
	
	if ( el.currentStyle )
		return el.currentStyle[ styleName ];
};
	


// selection & ranges

// returns the current selection object
HTMLArea.prototype._getSelection = function() {
	if (HTMLArea.is_ie) {
		return this._doc.selection;
	} else {
		return this._iframe.contentWindow.getSelection();
	}
};

// returns a range for the current selection
HTMLArea.prototype._createRange = function(sel) {
	if (HTMLArea.is_ie) {
		return sel.createRange();
	} else {
		this.focusEditor();
		if (sel) {
			return sel.getRangeAt(0);
		} else {
			return this._doc.createRange();
		}
	}
};

// event handling

HTMLArea._addEvent = function( targ, eventType, listener ) {
	if ( targ.addEventListener )
		targ.addEventListener( eventType, listener, false );
	else if ( targ.attachEvent )
		targ.attachEvent( "on" + eventType, listener );
	else
		return false;
};

HTMLArea._addEvents = function(el, evs, func) {
	for (var i = 0; i < evs.length; i++) {
		HTMLArea._addEvent(el, evs[i], func);
	}
};

HTMLArea._removeEvent = function(el, evname, func) {
	if (HTMLArea.is_ie) {
		el.detachEvent("on" + evname, func);
	} else {
		el.removeEventListener(evname, func, true);
	}
};

HTMLArea._removeEvents = function(el, evs, func) {
	for (var i = 0; i < evs.length; i++) {
		HTMLArea._removeEvent(el, evs[i], func);
	}
};

HTMLArea._stopEvent = function(ev) {
	if (HTMLArea.is_ie) {
		ev.cancelBubble = true;
		ev.returnValue = false;
	} else {
		ev.preventDefault();
		ev.stopPropagation();
	}
};

HTMLArea._removeClass = function(el, className) {
	if (!(el && el.className))
		return;
	
	var cls = el.className.split(" ");
	var ar = new Array();
	for (var i = cls.length; i > 0;)
	{
		if (cls[--i] != className)
			ar[ar.length] = cls[i];
	}
	el.className = ar.join(" ");
};

HTMLArea._addClass = function(el, className) {
	// remove the class first, if already there
	HTMLArea._removeClass(el, className);
	el.className += " " + className;
};

HTMLArea._hasClass = function(el, className) {
	if (!(el && el.className))
		return false;
	
	var cls = el.className.split(" ");
	
	for (var i = cls.length; i > 0;)
	{
		if (cls[--i] == className)
			return true;
	}
	return false;
};

HTMLArea._isBlockElement = function(el) {
	var blockTags = " body form textarea fieldset ul ol dl li div " +
		"p h1 h2 h3 h4 h5 h6 quote pre table thead " +
		"tbody tfoot tr td iframe ";
	return (blockTags.indexOf(" " + el.tagName.toLowerCase() + " ") != -1);
};

HTMLArea._needsClosingTag = function(el) {
	var closingTags = " script style div span ";
	return (closingTags.indexOf(" " + el.tagName.toLowerCase() + " ") != -1);
};

// Retrieves the HTML code from the given node.  This is a replacement for
// getting innerHTML, using standard DOM calls.
HTMLArea.getHTML = function(root, outputRoot) {
	function encode(str) {
		// we don't need regexp for that, but.. so be it for now.
		str = str.replace(/&/ig, "&amp;");
		str = str.replace(/</ig, "&lt;");
		str = str.replace(/>/ig, "&gt;");
		str = str.replace(/\"/ig, "&quot;");
		return str;
	};
	
	if ( root.innerHTML )
		return root.innerHTML;
	
	var html = "";
	switch (root.nodeType)
	{
	    case 1: // Node.ELEMENT_NODE
	    case 11: // Node.DOCUMENT_FRAGMENT_NODE
			var closed;
			var i;
			if (outputRoot)
			{
				closed = (!(root.hasChildNodes() || HTMLArea._needsClosingTag(root)));
				
				html = "<" + root.tagName.toLowerCase();
				
				var attrs = root.attributes;
				for (i = 0; i < attrs.length; ++i)
				{
					var a = attrs.item(i);
					if (!a.specified)
						continue;
					
					var name = a.name.toLowerCase();
					if (name.substr(0, 4) == "_moz")
					{
						// Mozilla reports some special tags
						// here; we don't need them.
						continue;
					}
					
					var value;
					if (name != 'style')
						value = a.value;
					else // IE fails to put style in attributes list
						value = root.style.cssText.toLowerCase();
					
					if (value.substr(0, 4) == "_moz") {
						// Mozilla reports some special tags
						// here; we don't need them.
						continue;
					}
					html += " " + name + '="' + value + '"';
				}
				html += closed ? " />" : ">";
			}
			for (i = root.firstChild; i; i = i.nextSibling)
			{
				html += HTMLArea.getHTML(i, true);
			}
			
			if (outputRoot && !closed)
				html += "</" + root.tagName.toLowerCase() + ">";
/*			
			if ( root.tagName.toLowerCase() == "body" )
			{
				html = addWhitespace( html );
			}
*/			
			
			break;
	    case 3: // Node.TEXT_NODE
			html = encode(root.data);
			break;
	    case 8: // Node.COMMENT_NODE
			html = "<!--" + root.data + "-->";
			break;		// skip comments, for now.
	}
	return html;
};

// creates a rgb-style color from a number
HTMLArea._makeColor = function(v) {
	if (typeof v != "number")
	{
		// already in rgb (hopefully); IE doesn't get here.
		return v;
	}
	// IE sends number; convert to rgb.
	var r = v & 0xFF;
	var g = (v >> 8) & 0xFF;
	var b = (v >> 16) & 0xFF;
	
	return "rgb(" + r + "," + g + "," + b + ")";
};

// returns hexadecimal color representation from a number or a rgb-style color.
HTMLArea._colorToRgb = function( v ) {
	// returns the hex representation of one byte (2 digits)
	function hex(d) {
		return (d < 16) ? ("0" + d.toString(16)) : d.toString(16);
	};
	
	var r, g, b;
	
	if (typeof v == "number")
	{
		// we're talking to IE here
		r = v & 0xFF;
		g = (v >> 8) & 0xFF;
		b = (v >> 16) & 0xFF;
		
		return ("#" + hex(r) + hex(g) + hex(b));
	}

	if ( v.substr(0, 3) == "rgb" )
	{
		// in rgb(...) form -- Mozilla
		var re = /rgb\s*\(\s*([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\s*\)/;
		
		if ( v.match(re) )
		{
			r = parseInt(RegExp.$1);
			g = parseInt(RegExp.$2);
			b = parseInt(RegExp.$3);
			
			return "#" + hex(r) + hex(g) + hex(b);
		}
		// doesn't match RE?!  maybe uses percentages or float numbers
		// -- FIXME: not yet implemented.
		return null;
	}

	if (v[0] == "#")
	{
		// already hex rgb (hopefully :D )
		return v;
	}

	// if everything else fails ;)
	return null;
};

// modal dialogs for Mozilla (for IE we're using the showModalDialog() call).

// receives an URL to the popup dialog and a function that receives one value;
// this function will get called after the dialog is closed, with the return
// value of the dialog.
HTMLArea.prototype._popupDialog = function(url, action, init) {
	Dialog(this.popupURL(url), action, init);
};

// paths

HTMLArea.prototype.imgURL = function(file) {
	if ( file.match( /^http:/ ) )
		return file;
	else
		return this.config.editorURL + this.config.imgURL + file;
};

HTMLArea.prototype.popupURL = function(file) {
	if ( file.match( /^http:/ ) )
		return file;
	else
		return this.config.editorURL + this.config.popupURL + file;
};

// EOF
// Local variables: //
// c-basic-offset:8 //
// indent-tabs-mode:t //
// End: //