// bbCode control by
// subBlue design
// www.subBlue.com

// Startup variables
var imageTag = false;
var theSelection = false;

// Check for Browser & Platform for PC & IE specific bits
// More details from: http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html
var clientPC = navigator.userAgent.toLowerCase(); // Get client info
var clientVer = parseInt(navigator.appVersion); // Get browser version

var is_ie = ((clientPC.indexOf('msie') != -1) && (clientPC.indexOf('opera') == -1));
var is_win = ((clientPC.indexOf('win') != -1) || (clientPC.indexOf('16bit') != -1));

// Define the bbCode tags
bbcode = new Array();
bbtags = new Array('[b]','[/b]','[i]','[/i]','[u]','[/u]','[quote]','[/quote]','[code]','[/code]','[list]','[/list]','[list=]','[/list]','[img]','[/img]','[url]','[/url]');

// Shows the help messages in the helpline window
function helpline(help)
{
	document.post.helpbox.value = eval(help + "_help");
}


// Replacement for arrayname.length property
function getarraysize(thearray)
{
	for (i = 0; i < thearray.length; i++)
	{
		if ((thearray[i] == "undefined") || (thearray[i] == "") || (thearray[i] == null))
		{
			return i;
		}
	}
	return thearray.length;
}

// Replacement for arrayname.push(value) not implemented in IE until version 5.5
// Appends element to the array
function arraypush(thearray,value)
{
	thearray[ getarraysize(thearray) ] = value;
}

// Replacement for arrayname.pop() not implemented in IE until version 5.5
// Removes and returns the last element of an array
function arraypop(thearray)
{
	thearraysize = getarraysize(thearray);
	retval = thearray[thearraysize - 1];
	delete thearray[thearraysize - 1];
	return retval;
}


function checkForm()
{

	formErrors = false;

//	if (document.post.message.value.length < 2)
//	{
//		formErrors = "{L_EMPTY_MESSAGE}";
//	}

	if (formErrors)
	{
		alert(formErrors);
		return false;
	}
	else
	{
		bbstyle(-1);
		//formObj.preview.disabled = true;
		//formObj.submit.disabled = true;
		return true;
	}
}

function emoticon(text)
{
	text = ' ' + text + ' ';
	if (document.post.message.createTextRange && document.post.message.caretPos)
	{
		var caretPos = document.post.message.caretPos;
		caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? text + ' ' : text;
		document.post.message.focus();
	}
	else
	{
		document.post.message.value  += text;
		document.post.message.focus();
	}
}

function bbfontstyle(bbopen, bbclose)
{
	if ((clientVer >= 4) && is_ie && is_win)
	{
		theSelection = document.selection.createRange().text;
		if (!theSelection)
		{
			document.post.message.value += bbopen + bbclose;
			document.post.message.focus();
			return;
		}
		document.selection.createRange().text = bbopen + theSelection + bbclose;
		document.post.message.focus();
		return;
	}
	else
	{
		document.post.message.value += bbopen + bbclose;
		document.post.message.focus();
		return;
	}
	storeCaret(document.post.message);
}


function bbstyle(bbnumber)
{

	donotinsert = false;
	theSelection = false;
	bblast = 0;

	if (bbnumber == -1)
	{ // Close all open tags & default button names
		while (bbcode[0])
		{
			butnumber = arraypop(bbcode) - 1;
			document.post.message.value += bbtags[butnumber + 1];
			buttext = eval('document.post.addbbcode' + butnumber + '.value');
			eval('document.post.addbbcode' + butnumber + '.value ="' + buttext.substr(0,(buttext.length - 1)) + '"');
		}
		imageTag = false; // All tags are closed including image tags :D
		document.post.message.focus();
		return;
	}

	if ((clientVer >= 4) && is_ie && is_win)
	{
		theSelection = document.selection.createRange().text; // Get text selection
	}

	if (theSelection)
	{
		// Add tags around selection
		document.selection.createRange().text = bbtags[bbnumber] + theSelection + bbtags[bbnumber+1];
		document.post.message.focus();
		theSelection = '';
		return;
	}

	// Find last occurance of an open tag the same as the one just clicked
	for (i = 0; i < bbcode.length; i++)
	{
		if (bbcode[i] == bbnumber+1)
		{
			bblast = i;
			donotinsert = true;
		}
	}

	if (donotinsert)
	{	// Close all open tags up to the one just clicked & default button names
		while (bbcode[bblast])
		{
			butnumber = arraypop(bbcode) - 1;
			document.post.message.value += bbtags[butnumber + 1];
			buttext = eval('document.post.addbbcode' + butnumber + '.value');
			eval('document.post.addbbcode' + butnumber + '.value ="' + buttext.substr(0,(buttext.length - 1)) + '"');
			imageTag = false;
		}
		document.post.message.focus();
		return;
	}
	else
	{ // Open tags

		if (imageTag && (bbnumber != 14))
		{	// Close image tag before adding another
			document.post.message.value += bbtags[15];
			lastValue = arraypop(bbcode) - 1;	// Remove the close image tag from the list
			document.post.addbbcode14.value = "Img";	// Return button back to normal state
			imageTag = false;
		}

		// Open tag
		document.post.message.value += bbtags[bbnumber];
		if ((bbnumber == 14) && (imageTag == false))
		{
			imageTag = 1; // Check to stop additional tags after an unclosed image tag
		}
		arraypush(bbcode,bbnumber+1);
		eval('document.post.addbbcode' + bbnumber + '.value += "*"');
		document.post.message.focus();
		return;
	}
	storeCaret(document.post.message);
}

// Insert at Claret position. Code from
// http://www.faqts.com/knowledge_base/view.phtml/aid/1052/fid/130
function storeCaret(textEl)
{
	if (textEl.createTextRange)
	{
		textEl.caretPos = document.selection.createRange().duplicate();
	}
}