//  Add events to objects
// ---------------------------------------

var FTB_EventCache = [];

function FTB_AddEvents(obj, evTypes, fn) 
{
	for (i=0; i<evTypes.length; i++) FTB_AddEvent(obj, evTypes[i], fn);
};

function FTB_AddEvent(obj, evType, fn, useCapture) 
{
	//if (useCapture==undefined) 
	useCapture=true;
	if (obj.addEventListener) 
	{
		obj.addEventListener(evType, fn, useCapture);
	} 
	else if (obj.attachEvent) 
	{
		obj.attachEvent('on'+evType, fn);
	}
	
	FTB_EventCache.push([obj, evType, fn, useCapture]);
};

function FTB_RemoveEvent(obj, evType, fn, useCapture) 
{
    if (useCapture == undefined) 
    	useCapture=true;
	if (obj.removeEventListener) 
	{
      obj.removeEventListener(evType, fn, useCapture);
    } 
    else if (obj.detachEvent) 
    {
      obj.detachEvent('on' + evType, fn);
    }
};

function FTB_Unload() 
{
	for (var i = 0; i < FTB_EventCache.length; i++) 
	{
		FTB_RemoveEvent.apply(this, FTB_EventCache[i]);
		FTB_EventCache[i][0] = null;
	}
	FTB_EventCache = false;	
};
FTB_AddEvent(window, 'unload', FTB_Unload, false);

function FTB_StopEvent(e)
{
	if (!e)
		return;

	if (FTB_Browser.isIE)
	{
		e.cancelBubble = true;
		e.returnValue = false;
	}
	else if (e.stopPropagation)
	{
		e.stopPropagation();
		e.preventDefault();
	}	
}

//  API for holding all FreeTextBox's
// ---------------------------------------
var FTB_API = new Object();
var FTB_Names = [];

// Browser Detection 'FTB_Browser'
// ---------------------------------------
function FTB_BrowserDetect() 
{
	doc = window.document;
	navVersion = navigator.appVersion.toLowerCase();
	
	this.ie4 = (!doc.getElementById && doc.all) ? true : false;
	this.ie5 = (navVersion.indexOf("msie 5.0") != -1) ? true : false;
	this.ie55 = (navVersion.indexOf("msie 5.5") != -1) ? true : false;
	this.ie6 = (navVersion.indexOf("msie 6.0") != -1) ? true : false;
	this.ie7 = (navVersion.indexOf("msie 7.0") != -1) ? true : false;
	this.isIE = (this.ie5 || this.ie55 || this.ie6 || this.ie7) ? true : false;
	this.isGecko = !this.isIE;
};
FTB_Browser = new FTB_BrowserDetect();

// OOP Timeout Manager 'FTB_Timeout'
// ---------------------------------------
function FTB_TimeoutManager() 
{
	this.pendingCalls = {};		
};

FTB_TimeoutManager.prototype.addMethod = function(name,obj,method,delay,arg1,arg2) 
{
	this.clearMethod(name);
	this.pendingCalls[name] = new FTB_TimeoutCall(obj, method, arg1, arg2);
	this.pendingCalls[name].timeout = setTimeout('FTB_Timeout.executeMethod("' + name + '");', delay);
};

FTB_TimeoutManager.prototype.executeMethod = function(name) 
{
	call = this.pendingCalls[name];
	if (call != null) 
	{
		call.obj[call.method](call.arg1, call.arg2);
		this.clearMethod(name);
	}
};

FTB_TimeoutManager.prototype.clearMethod = function(name) 
{
	if (this.pendingCalls[name]) 
		delete this.pendingCalls[name];
};

// Object to hold timeout reference
function FTB_TimeoutCall(obj,method,arg1,arg2) 
{
	this.obj = obj;
	this.method = method;
	this.arg1 = arg1;
	this.arg2 = arg2;
	this.timeout = null;
};

FTB_Timeout = new FTB_TimeoutManager();

// Constants 
// -----------------------------------------
FTB_MODE_HTML = 0;
FTB_MODE_DESIGN = 1;
FTB_MODE_PREVIEW = 2;
//
FTB_PASTE_DEFAULT = 0;
FTB_PASTE_DISABLED = 1;
FTB_PASTE_TEXT = 2;
//
FTB_TAB_DISABLED = 0;
FTB_TAB_NEXTCONTROL = 1;
FTB_TAB_INSERTSPACES = 2;
//
FTB_BUTTON_ON = 0;
FTB_BUTTON_OFF = 1;
//
FTB_BREAK_P = 0;
FTB_BREAK_BR = 1;
//
FTB_KEY_TAB = 9;
FTB_KEY_ENTER = 13;
FTB_KEY_QUOTE = 222;
FTB_KEY_V = 86;
FTB_KEY_P = 86;
FTB_KEY_B = 66;
FTB_KEY_I = 73;
FTB_KEY_U = 85;
FTB_KEY_Z = 90;
FTB_KEY_Y = 89;
//
FTB_CODE_OPENCURLY = '&#8220;';
FTB_CODE_CLOSECURLY = '&#8221;';
//
FTB_BUTTON_STYLEDBACKGROUNDS = 0;
FTB_BUTTON_IMAGEBACKGROUNDS = 1;


/* Misc Methods
------------------------------------------ */
function FTB_SetListValue(list, value, checkText) 
{
	checkText = checkText || false;
	value = String(value).toLowerCase();

	for (var i = 0; i < list.options.length; i++) 
	{
		if (list.options[i].value.toLowerCase() == value || (checkText && list.options[i].text.toLowerCase() == value)) 
		{
			list.selectedIndex = i;
			return;
		}
	}
};

function FTB_ParseUnit(styleString) 
{
	var unit = new Object();
	unit.value = 0;
	unit.unitType = '';
	for(var i = 0; i < styleString.length; i++) 
	{
		if (isNaN(styleString.charAt(i)))
			unit.unitType += styleString.charAt(i);
		else 
			unit.value = parseInt(unit.value.toString() + styleString.charAt(i), 10);
	}
	
	return unit;
};

function FTB_DecToHex(dec, len)
{
	hexColor = parseInt(dec, 10).toString(16);
	
	if (len)
		while (hexColor.length < len)
			hexColor = "0" + hexColor;
	
	return hexColor.toUpperCase();
};

function FTB_RgbToHex(r,g,b) { return "#" + FTB_IntToHex(r) + FTB_IntToHex(g) + FTB_IntToHex(b); };

function FTB_IntToHexColor(intColor)
{
	if (!intColor) 
		return null;
	intColor = intColor.toString(16).toUpperCase();
	while (intColor.length < 6) 
		intColor = "0" + intColor;
		
	return "#" + intColor.substring(4, 6) + intColor.substring(2, 4) + intColor.substring(0, 2);
};

function FTB_RgbStringToHex(rgbString)
{
	var r, g, b;
	rgbString = rgbString.toString().toLowerCase();	
	if (rgbString.indexOf("rgb(") == -1 || rgbString.indexOf(")") == -1) 
		return rgbString;
	
	rgbString = rgbString.substring(rgbString.indexOf("(") + 1, rgbString.indexOf(")"));
	rgb = rgbString.split(',');
	r = rgb[0];
	g = rgb[1];
	if (rgb.length == 3) 
		b = rgb[2]; 
	else 
		b = 0;
		
	return FTB_RgbToHex(r,g,b);
};

function FTB_IntToHex(dec)
{ 
	var result = (parseInt(dec, 10).toString(16)); 
	if	(result.length  == 1) 
		result= ("0" + result); 
	return result.toUpperCase(); 
};

function FTB_GetQueryStringValues(url) 
{
	url = new String(url);
	
	var queryStringValues = new Object();
	var querystring = url.substring(url.indexOf('?') + 1, url.length);
	var querystringSplit = querystring.split('&');
	
	for (i = 0; i < querystringSplit.length; i++){
		var pair = querystringSplit[i].split('=');
		var name = pair[0];
		var value = pair[1];
		queryStringValues[ name ] = value;
	}
	return queryStringValues;
};


//convert rgb to hsl (all values 0..1)
function FTB_RGB2HSL(r, g, b)
{ 
    var max = Math.max(r, g, b);
    var min = Math.min(r, g, b);
    
    var l = (max + min) / 2;
    var h = 0;
    var s = 0;
    
    if (max != min)
    {
        if (l < 0.5)
           s = (max - min) / (max + min);
        else
           s = (max - min) / (2 - max - min);
           
        if (r == max)
           h = (g - b) / (max - min) / 6;
           
        if (g == max)
           h = (2.0 + (b - r) / (max - min)) / 6;
           
        if (b == max) 
           h = (4.0 + (r - g) / (max - min)) / 6;
    }
    
    if (h < 0)
        h += 1;
        
    return [h, s, l];
}


//calculate rgb component
function FTB_HUE2Color(x, y, h)
{
    var c;
    if(h < 0)
    {
        h += 1;
    }
    if(h > 1)
    {
        h -= 1;
    }
    if (h<1/6)
    {
       c=x +(y - x) * h * 6;
    }
    else
    {
       if(h < 1/2)
       {
          c=y;
       }
       else
       {
          if(h < 2/3)
          {
             c=x + (y - x) * (2 / 3 - h) * 6;
          }
          else
          {
             c=x;
          }
       }
       
    }
    return c;
} 

//convert hsl to rgb (all values 0..1)
function FTB_HSL2RGB(h, s, l)
{
    var y = (l > .5) ? l + s - l * s : l * (s + 1),
        x = l * 2 - y,
        r = FTB_HUE2Color(x, y, h + 1 / 3),
        g = FTB_HUE2Color(x, y, h),
        b = FTB_HUE2Color(x, y, h - 1 / 3);
    return [r, g, b];
}