// Cross-Browser Rich Text Editor
// http://www.kevinroth.com/rte/demo.htm
// Written by Kevin Roth (kevin@NOSPAMkevinroth.com - remove NOSPAM)
// Visit the support forums at http://www.kevinroth.com/forums/index.php?c=2

//init variables
var isRichText = false;
var rng;
var currentRTE;
var allRTEs = "";

var isIE;
var isGecko;
var isSafari;
var isKonqueror;

var imagesPath;
var includesPath;
var cssFile;


function InitRTE(imgPath, incPath, css) {
	//set browser vars
	var ua = navigator.userAgent.toLowerCase();
	isIE = ((ua.indexOf("msie") != -1) && (ua.indexOf("opera") == -1) && (ua.indexOf("webtv") == -1)); 
	isGecko = (ua.indexOf("gecko") != -1);
	isSafari = (ua.indexOf("safari") != -1);
	isKonqueror = (ua.indexOf("konqueror") != -1);
	
	//check to see if designMode mode is available
	if (document.getElementById && document.designMode && !isSafari && !isKonqueror) {
		isRichText = true;
	}
		
	//set paths vars
	imagesPath = imgPath;
	includesPath = incPath;
	cssFile = css;
}

var divValue = ""; 
function writeToDiv(data)
{
    divValue += data; 
}

function CommitWrites()
{
	$(_writeDiv).innerHTML += divValue; 
}

var _writeDiv = null; 

function WriteRichText(rte, container, html, width, height, buttons, readOnly) 
{	
	if(html == null || html == "")
	{
		html = " ";
	}
	
	divValue = ""; 
	_writeDiv = container;
	if (isRichText) 
	{
			
		if (readOnly) buttons = false;
		
		//adjust minimum table widths
		if (isIE) 
		{
			if (buttons && (width < 540)) width = 540;
			var tablewidth = width;
		} 
		else 
		{
			if (buttons && (width < 540)) width = 540;
			var tablewidth = width + 4;
		}
		
		var divWidth = parseInt(width) + 6; 
		writeToDiv('<div class="rteDiv" style="width:' + divWidth + 'px;">');

			writeToDiv('<table class="rteBack" cellpadding="0" cellspacing="0" id="Buttons2_' + rte + '" width="100%">');
			writeToDiv('<tr>');
			writeToDiv('<td><img id="bold" class="rteImage" src="' + imagesPath + 'bold.gif" width="25" height="24" alt="Bold" title="Bold" onClick="rteCommand(\'' + rte + '\', \'bold\', \'\')"></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'italic.gif" width="25" height="24" alt="Italic" title="Italic" onClick="rteCommand(\'' + rte + '\', \'italic\', \'\')"></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'underline.gif" width="25" height="24" alt="Underline" title="Underline" onClick="rteCommand(\'' + rte + '\', \'underline\', \'\')"></td>');
			writeToDiv('<td><img class="rteVertSep" src="' + imagesPath + 'blackdot.gif" width="1" height="20" border="0" alt=""></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'left_just.gif" width="25" height="24" alt="Align Left" title="Align Left" onClick="rteCommand(\'' + rte + '\', \'justifyleft\', \'\')"></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'centre.gif" width="25" height="24" alt="Center" title="Center" onClick="rteCommand(\'' + rte + '\', \'justifycenter\', \'\')"></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'right_just.gif" width="25" height="24" alt="Align Right" title="Align Right" onClick="rteCommand(\'' + rte + '\', \'justifyright\', \'\')"></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'justifyfull.gif" width="25" height="24" alt="Justify Full" title="Justify Full" onclick="rteCommand(\'' + rte + '\', \'justifyfull\', \'\')"></td>');
			writeToDiv('<td><img class="rteVertSep" src="' + imagesPath + 'blackdot.gif" width="1" height="20" border="0" alt=""></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'hr.gif" width="25" height="24" alt="Horizontal Rule" title="Horizontal Rule" onClick="rteCommand(\'' + rte + '\', \'inserthorizontalrule\', \'\')"></td>');
			writeToDiv('<td><img class="rteVertSep" src="' + imagesPath + 'blackdot.gif" width="1" height="20" border="0" alt=""></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'numbered_list.gif" width="25" height="24" alt="Ordered List" title="Ordered List" onClick="rteCommand(\'' + rte + '\', \'insertorderedlist\', \'\')"></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'list.gif" width="25" height="24" alt="Unordered List" title="Unordered List" onClick="rteCommand(\'' + rte + '\', \'insertunorderedlist\', \'\')"></td>');
			writeToDiv('<td><img class="rteVertSep" src="' + imagesPath + 'blackdot.gif" width="1" height="20" border="0" alt=""></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'outdent.gif" width="25" height="24" alt="Outdent" title="Outdent" onClick="rteCommand(\'' + rte + '\', \'outdent\', \'\')"></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'indent.gif" width="25" height="24" alt="Indent" title="Indent" onClick="rteCommand(\'' + rte + '\', \'indent\', \'\')"></td>');
			writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'image.gif" width="25" height="24" alt="Add Image" title="Add Image" onClick="addImage(\'' + rte + '\')"></td>');
			
			if (isIE) 
			{
				writeToDiv('<td><img class="rteImage" src="' + imagesPath + 'spellcheck.gif" width="25" height="24" alt="Spell Check" title="Spell Check" onClick="checkspell()"></td>');
			}
			
			writeToDiv('<td width="100%"></td>');
			writeToDiv('</tr>');
			writeToDiv('</table>');

		writeToDiv('<iframe style="padding:3px;font:74% arial,helvetica,clean,sans-serif;" FRAMEBORDER=0 id="' + rte + '" name="' + rte + '" width="' + width + 'px" height="' + height + 'px" src="' + includesPath + 'blank.htm"></iframe>');
		
		if (!readOnly) writeToDiv('<br /><span onmouseover="this.style.cursor=\'pointer\';" id="chkSrcSpan' + rte + '"><input type="checkbox" id="chkSrc' + rte + '" onclick="toggleHTMLSrc(\'' + rte + '\');" /><label for="chkSrc' + rte + '">&nbsp;View Source</label></span>');
		//writeToDiv('<iframe width="154" height="104" id="cp' + rte + '" src="' + includesPath + 'palette.htm" marginwidth="0" marginheight="0" scrolling="no" style="visibility:hidden; position: absolute;"></iframe>');
		writeToDiv('<input type="hidden" id="hdn' + rte + '" name="' + rte + '" value="">');
		writeToDiv('</div>');
		
	    CommitWrites(); 

		//document.getElementById('hdn' + rte).value = html;
		EnableDesignMode(rte, html, readOnly);
	} 
	else 
	{
		if (!readOnly) 
		{
			writeToDiv('<textarea name="' + rte + '" id="' + rte + '" style="width: ' + width + 'px; height: ' + height + 'px;">' + html + '</textarea>');
		} 
		else 
		{
			writeToDiv('<textarea name="' + rte + '" id="' + rte + '" style="width: ' + width + 'px; height: ' + height + 'px;" readonly>' + html + '</textarea>');
		}
	}	
}

function EnableDesignMode(rte, html, readOnly) 
{
	var frameHtml = "<?xml version='1.0' encoding='utf-8' ?><!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\" \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">\n" + 
					"<html xmlns='http://www.w3.org/1999/xhtml' xml:lang=\"en\">\n";
	frameHtml += "<head>\n";
	frameHtml += '<link href="./scripts/custom/layout/css/Global.css" rel="stylesheet" type="text/css" />\n';
	frameHtml += '<link href="./scripts/custom/layout/css/rte.css" rel="stylesheet" type="text/css" />\n';
	frameHtml += '<link href="./scripts/custom/layout/css/UIControls.css" rel="stylesheet" type="text/css" />\n';
	frameHtml += '<link href="./scripts/custom/layout/css/grid.css" rel="stylesheet" type="text/css" />\n';
	frameHtml += '<link href="./scripts/custom/layout/css/TabMenu.css" rel="stylesheet" type="text/css" />\n';
	frameHtml += '<link href="./scripts/custom/layout/css/SiteStyles.css" rel="stylesheet" type="text/css" />\n';
	
	//to reference your stylesheet, set href property below to your stylesheet path and uncomment

	frameHtml += "<style>\n";
	frameHtml += "body,table,tr,td {\n";
	//frameHtml += "test font:74% arial,helvetica,clean,sans-serif;\n";
	
	if (readOnly) 
	{
		HideButtons(rte); 
		frameHtml += "	color: #666666;\n";
	}
	else
	{
		ShowButtons(rte); 
	}
	
	frameHtml += "	background: #FFFFFF;\n";
	frameHtml += "	margin: 0px;\n";
	frameHtml += "	padding: 0px;\n";
	frameHtml += "}\n";
	frameHtml += "</style>\n";
	
	frameHtml += "</head>\n";
	frameHtml += "<body>\n";
	frameHtml += html + "\n";
	frameHtml += "</body>\n";
	frameHtml += "</html>";
	
	if (document.all) 
	{		
		var oRTE = frames[rte].document;
		oRTE.open();		
		oRTE.write(frameHtml);
		oRTE.close();
		if (!readOnly) 
		{
			oRTE.designMode = "On";
		}		
		else
		{
			oRTE.designMode = "Off";
		}
	} 
	else 
	{
		try 
		{
			if (!readOnly) 
			{
				document.getElementById(rte).contentDocument.designMode = "on";
			}
			else
			{
				document.getElementById(rte).contentDocument.designMode = "off";
			}
			
			try 
			{
				var oRTE = document.getElementById(rte).contentWindow.document;
				oRTE.open();
				oRTE.write(frameHtml);
				oRTE.close();
				if (isGecko && !readOnly) 
				{
					//attach a keyboard handler for gecko browsers to make keyboard shortcuts work
					oRTE.addEventListener("keypress", kb_handler, true);
				}
			} 
			catch (e) 
			{
				alert("Error preloading content.");
			}
		} 
		catch (e) 
		{
			//gecko may take some time to enable design mode.
			//Keep looping until able to set.
			if (isGecko) 
			{
				setTimeout("EnableDesignMode('" + rte + "', '" + html + "', " + readOnly + ");", 10);
			} 
			else 
			{
				return false;
			}
		}
	}
}

function rteCommand(rte, command, option) {
	//function to perform command
	var oRTE;
	if (document.all) 
	{
		oRTE = frames[rte];
	} 
	else 
	{
		oRTE = document.getElementById(rte).contentWindow;
	}
	
	try 
	{
		oRTE.focus();
	  	oRTE.document.execCommand(command, false, option);
		oRTE.focus();
	} 
	catch (e) 
	{
//		alert(e);
//		setTimeout("rteCommand('" + rte + "', '" + command + "', '" + option + "');", 10);
	}
}

function toggleHTMLSrc(rte) {
	//contributed by Bob Hutzel (thanks Bob!)
	var oRTE;
	if (document.all) {
		oRTE = frames[rte].document;
	} else {
		oRTE = document.getElementById(rte).contentWindow.document;
	}
	
	if (document.getElementById("chkSrc" + rte).checked) 
	{
		HideButtons(rte); 		
		if (document.all) {
			oRTE.body.innerText = oRTE.body.innerHTML;
		} else {
			var htmlSrc = oRTE.createTextNode(oRTE.body.innerHTML);
			oRTE.body.innerHTML = "";
			oRTE.body.appendChild(htmlSrc);
		}
	}
	else 
	{
		ShowButtons(rte); 
		if (document.all) {
			//fix for IE
			var output = escape(oRTE.body.innerText);
			output = output.replace("%3CP%3E%0D%0A%3CHR%3E", "%3CHR%3E");
			output = output.replace("%3CHR%3E%0D%0A%3C/P%3E", "%3CHR%3E");
			
			oRTE.body.innerHTML = unescape(output);
		} else {
			var htmlSrc = oRTE.body.ownerDocument.createRange();
			htmlSrc.selectNodeContents(oRTE.body);
			oRTE.body.innerHTML = htmlSrc.toString();
		}
	}
}

function HideButtons(rte)
{
	showHideElement("Buttons2_" + rte, "hide");
}

function ShowButtons(rte)
{
	showHideElement("Buttons2_" + rte, "show");
}

function HideToggleHTML(rte)
{
	showHideElement("chkSrcSpan" + rte, "hide");
}

function ShowToggleHTML(rte)
{
	showHideElement("chkSrcSpan" + rte, "show");
}



function GetRichTextValue(rte) 
{
	//contributed by Bob Hutzel (thanks Bob!)
	var oRTE;
	if (document.all) 
	{
		oRTE = frames[rte].document;
	} 
	else 
	{
		oRTE = document.getElementById(rte).contentWindow.document;
	}
	
	return oRTE.body.innerHTML; 
}

function dlgColorPalette(rte, command) {
	//function to display or hide color palettes
	setRange(rte);
	
	//get dialog position
	var oDialog = document.getElementById('cp' + rte);
	var buttonElement = document.getElementById(command + '_' + rte);
	var iLeftPos = getOffsetLeft(buttonElement);
	var iTopPos = getOffsetTop(buttonElement) + (buttonElement.offsetHeight + 4);
	oDialog.style.left = (iLeftPos) + "px";
	oDialog.style.top = (iTopPos) + "px";
	
	if ((command == parent.command) && (rte == currentRTE)) {
		//if current command dialog is currently open, close it
		if (oDialog.style.visibility == "hidden") {
			showHideElement(oDialog, 'show');
		} else {
			showHideElement(oDialog, 'hide');
		}
	} else {
		//if opening a new dialog, close all others
		var vRTEs = allRTEs.split(";");
		for (var i = 0; i < vRTEs.length; i++) {
			showHideElement('cp' + vRTEs[i], 'hide');
		}
		showHideElement(oDialog, 'show');
	}
	
	//save current values
	parent.command = command;
	currentRTE = rte;
}

function dlgInsertTable(rte, command) {
	//function to open/close insert table dialog
	//save current values
	setRange(rte);
	parent.command = command;
	currentRTE = rte;
	var windowOptions = 'history=no,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=no,resizable=no,width=360,height=200';
	window.open(includesPath + 'insert_table.htm', 'InsertTable', windowOptions);
}

function insertLink(rte) {
	//function to insert link
	var szURL = prompt("Enter a URL:", "");
	try {
		//ignore error for blank urls
		rteCommand(rte, "Unlink", null);
		rteCommand(rte, "CreateLink", szURL);
	} catch (e) {
		//do nothing
	}
}

function setColor(color) {
	//function to set color
	var rte = currentRTE;
	var parentCommand = parent.command;
	
	if (document.all) {
		//retrieve selected range
		var sel = frames[rte].document.selection; 
		if (parentCommand == "hilitecolor") parentCommand = "backcolor";
		if (sel != null) {
			var newRng = sel.createRange();
			newRng = rng;
			newRng.select();
		}
	}
	
	rteCommand(rte, parentCommand, color);
	showHideElement('cp' + rte, "hide");
}

function addImage(rte) 
{
	UIControls.RichTextEdit.ImageBrowserForm.ShowPictureForm(); 
	UIControls.RichTextEdit.ImageBrowserForm.rte = rte; 
	//rteCommand(rte, 'InsertImage', "http://i.a.cnn.net/cnn/2007/TECH/science/01/30/stonehenge.village.ap/newt1.stonehenge2.ng.jpg");
}

// Ernst de Moor: Fix the amount of digging parents up, in case the RTE editor itself is displayed in a div.
// KJR 11/12/2004 Changed to position palette based on parent div, so palette will always appear in proper location regardless of nested divs
function getOffsetTop(elm) {
	var mOffsetTop = elm.offsetTop;
	var mOffsetParent = elm.offsetParent;
	var parents_up = 2; //the positioning div is 2 elements up the tree
	
	while(parents_up > 0) {
		mOffsetTop += mOffsetParent.offsetTop;
		mOffsetParent = mOffsetParent.offsetParent;
		parents_up--;
	}
	
	return mOffsetTop;
}

// Ernst de Moor: Fix the amount of digging parents up, in case the RTE editor itself is displayed in a div.
// KJR 11/12/2004 Changed to position palette based on parent div, so palette will always appear in proper location regardless of nested divs
function getOffsetLeft(elm) {
	var mOffsetLeft = elm.offsetLeft;
	var mOffsetParent = elm.offsetParent;
	var parents_up = 2;
	
	while(parents_up > 0) {
		mOffsetLeft += mOffsetParent.offsetLeft;
		mOffsetParent = mOffsetParent.offsetParent;
		parents_up--;
	}
	
	return mOffsetLeft;
}

function selectFont(rte, selectname) {
	//function to handle font changes
	var idx = document.getElementById(selectname).selectedIndex;
	// First one is always a label
	if (idx != 0) {
		var selected = document.getElementById(selectname).options[idx].value;
		var cmd = selectname.replace('_' + rte, '');
		rteCommand(rte, cmd, selected);
		document.getElementById(selectname).selectedIndex = 0;
	}
}

function kb_handler(evt) {
	var rte = evt.target.id;
	
	//contributed by Anti Veeranna (thanks Anti!)
	if (evt.ctrlKey) {
		var key = String.fromCharCode(evt.charCode).toLowerCase();
		var cmd = '';
		switch (key) {
			case 'b': cmd = "bold"; break;
			case 'i': cmd = "italic"; break;
			case 'u': cmd = "underline"; break;
		};

		if (cmd) {
			rteCommand(rte, cmd, null);
			
			// stop the event bubble
			evt.preventDefault();
			evt.stopPropagation();
		}
 	}
}

function insertHTML(html) {
	//function to add HTML -- thanks dannyuk1982
	var rte = currentRTE;
	
	var oRTE;
	if (document.all) {
		oRTE = frames[rte];
	} else {
		oRTE = document.getElementById(rte).contentWindow;
	}
	
	oRTE.focus();
	if (document.all) {
		oRTE.document.selection.createRange().pasteHTML(html);
	} else {
		oRTE.document.execCommand('insertHTML', false, html);
	}
}

function showHideElement(element, showHide) {
	//function to show or hide elements
	//element variable can be string or object
	if (document.getElementById(element)) {
		element = document.getElementById(element);
	}
	
	if (showHide == "show") {
		element.style.visibility = "visible";
	} else if (showHide == "hide") {
		element.style.visibility = "hidden";
	}
}

function setRange(rte) {
	//function to store range of current selection
	var oRTE;
	if (document.all) {
		oRTE = frames[rte];
		var selection = oRTE.document.selection; 
		if (selection != null) rng = selection.createRange();
	} else {
		oRTE = document.getElementById(rte).contentWindow;
		var selection = oRTE.getSelection();
		rng = selection.getRangeAt(selection.rangeCount - 1).cloneRange();
	}
}

function stripHTML(oldString) {
	//function to strip all html
	var newString = oldString.replace(/(<([^>]+)>)/ig,"");
	
	//replace carriage returns and line feeds
   newString = newString.replace(/\r\n/g," ");
   newString = newString.replace(/\n/g," ");
   newString = newString.replace(/\r/g," ");
	
	//trim string
	newString = trim(newString);
	
	return newString;
}

function trim(inputString) {
   // Removes leading and trailing spaces from the passed string. Also removes
   // consecutive spaces and replaces it with one space. If something besides
   // a string is passed in (null, custom object, etc.) then return the input.
   if (typeof inputString != "string") return inputString;
   var retValue = inputString;
   var ch = retValue.substring(0, 1);
	
   while (ch == " ") { // Check for spaces at the beginning of the string
      retValue = retValue.substring(1, retValue.length);
      ch = retValue.substring(0, 1);
   }
   ch = retValue.substring(retValue.length - 1, retValue.length);
	
   while (ch == " ") { // Check for spaces at the end of the string
      retValue = retValue.substring(0, retValue.length - 1);
      ch = retValue.substring(retValue.length - 1, retValue.length);
   }
	
	// Note that there are two spaces in the string - look for multiple spaces within the string
   while (retValue.indexOf("  ") != -1) {
		// Again, there are two spaces in each of the strings
      retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ") + 1, retValue.length);
   }
   return retValue; // Return the trimmed string back to the user
}

//*****************
//IE-Only Functions
//*****************
function checkspell() {
	//function to perform spell check
	try {
		var tmpis = new ActiveXObject("ieSpell.ieSpellExtension");
		tmpis.CheckAllLinkedDocuments(document);
	}
	catch(exception) {
		if(exception.number==-2146827859) {
			if (confirm("ieSpell not detected.  Click Ok to go to download page."))
				window.open("http://www.iespell.com/download.php","DownLoad");
		} else {
			alert("Error Loading ieSpell: Exception " + exception.number);
		}
	}
}

function raiseButton(e) {
	//IE-Only Function
	var el = window.event.srcElement;
	
	className = el.className;
	if (className == 'rteImage' || className == 'rteImageLowered') {
		el.className = 'rteImageRaised';
	}
}

function normalButton(e) {
	//IE-Only Function
	var el = window.event.srcElement;
	
	className = el.className;
	if (className == 'rteImageRaised' || className == 'rteImageLowered') {
		el.className = 'rteImage';
	}
}

function lowerButton(e) {
	//IE-Only Function
	var el = window.event.srcElement;
	
	className = el.className;
	if (className == 'rteImage' || className == 'rteImageRaised') {
		el.className = 'rteImageLowered';
	}
}