/*
 * Thickbox 2.1 - jQuery plugin for displaying content in a box above the page
 * 
 * Copyright (c) 2006, 2007 Cody Lindley (http://www.codylindley.com)
 *
 * Licensed under the MIT License:
 *   http://www.opensource.org/licenses/mit-license.php
 */

// on page load call TB_init
$(document).ready(TB_init);

function TB_setCookie(name, value, expires, path, domain, secure)
{
    document.cookie= name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

function TB_deleteCookie ( cookie_name )

{
  var cookie_date = new Date ( );  // current date & time
  cookie_date.setTime ( cookie_date.getTime() - 1 );
  document.cookie = cookie_name += "=; expires=" + cookie_date.toGMTString();
}

// add thickbox to href elements that have a class of .thickbox
function TB_init(){
	$("a.thickbox").click(function(event){
		// stop default behaviour
		event.preventDefault();
		// remove click border
		this.blur();
	
		// get caption: either title or name attribute
		var caption = this.title || this.name || "";
		
		// get rel attribute for image groups
		var group = this.rel || false;
		
		// display the box for the elements href
		TB_show(caption, this.href, group);
	});
}

// called when the user clicks on a thickbox link
function TB_show(caption, url, rel, hideFlash) {

	var arrayPageScroll = TB_getPageScrollTop();

  TB_setCookie('current_ypos',arrayPageScroll[1]);
  
  // hide conversation content on dashboard so flash doesn't show through TB 3_27
  if (hideFlash) {
    hideFlashContent();
  }
  
	// create iframe, overlay and box if non-existent
	if ( !$("#TB_HideSelect").length ) {
		$("body").append("<iframe id='TB_HideSelect'></iframe><div id='TB_overlay'></div><div id='TB_window'></div>");
		// $("#TB_overlay").click(TB_remove);
	}
	// TODO replace or check if event is already assigned
	$(window).scroll(TB_position);
	
	// TODO replace
	TB_overlaySize();
	
	// TODO create loader only once, hide and show on demand
	$("body").append("<div id='TB_load'>&nbsp;</div>");
	TB_load_position();
	
	// check if a query string is involved
	var baseURL = url.match(/(.+)?/)[1] || url;

	// regex to check if a href refers to an image
	var imageURL = /\.(jpe?g|png|gif|bmp)/gi;

  var queryString = url.match(/\?(.+)/)[1];
  var params = TB_parseQuery( queryString );
  
  TB_WIDTH = (params['width']*1) + 30;
  TB_HEIGHT = (params['height']*1) + 40;
  if (params['offset']) { TB_OFFSET = (params['offset']*1); }
  else { TB_OFFSET = 0; }

  var ajaxContentW = TB_WIDTH - 30,
    ajaxContentH = TB_HEIGHT - 45;
  
  $("#TB_window").append("<iframe frameborder='0' hspace='0' src='"+url+"' id='TB_iframeContent' name='TB_iframeContent' style='width:"+(ajaxContentW + 3)+"px;height:"+(ajaxContentH + 10)+"px;' onload='TB_showIframe()' allowtransparency='true'> </iframe>");
      
  $("#TB_closeWindowButton").click(TB_remove);
  
  TB_position();
  if(frames['TB_iframeContent'] == undefined){//be nice to safari
    $("#TB_load").remove();
    $("#TB_window").css({display:"block"});
    $(document).keyup( function(e){ var key = e.keyCode; if(key == 27){TB_remove()} });
  }

	$(window).resize(TB_position);
	
	document.onkeyup = function(e){ 	
		if (e == null) { // ie
			keycode = event.keyCode;
		} else { // mozilla
			keycode = e.which;
		}
		if(keycode == 27){ // close
			TB_remove();
		}	
	}
		
}

//helper functions below

function TB_showIframe(){
	$("#TB_load").remove();
	$("#TB_window").css({display:"block"});
}

function TB_remove() {
 	$("#TB_imageOff").unbind("click");
	$("#TB_overlay").unbind("click");
	$("#TB_closeWindowButton").unbind("click");
	$("#TB_window").fadeOut("fast",function(){$('#TB_window,#TB_overlay,#TB_HideSelect').remove();});
	$("#TB_load").remove();
	// restore hidden flash content
	showFlashContent();
	return false;
}

function TB_position() {
	var pagesize = TB_getPageSize();	
	var arrayPageScroll = TB_getPageScrollTop();
	
	$("#TB_window").css({width:TB_WIDTH+"px",left: ((pagesize[0] - TB_WIDTH)/2)+"px", top: (arrayPageScroll[1] + ((pagesize[1]-TB_HEIGHT)/2)+TB_OFFSET)+"px" });
}

function TB_overlaySize(){
	if (window.innerHeight && window.scrollMaxY || window.innerWidth && window.scrollMaxX) {	
		yScroll = window.innerHeight + window.scrollMaxY;
		xScroll = window.innerWidth + window.scrollMaxX;
		var deff = document.documentElement;
		var wff = (deff&&deff.clientWidth) || document.body.clientWidth || window.innerWidth || self.innerWidth;
		var hff = (deff&&deff.clientHeight) || document.body.clientHeight || window.innerHeight || self.innerHeight;
		xScroll -= (window.innerWidth - wff);
		yScroll -= (window.innerHeight - hff);
	} else if (document.body.scrollHeight > document.body.offsetHeight || document.body.scrollWidth > document.body.offsetWidth){ // all but Explorer Mac
		yScroll = document.body.scrollHeight;
		xScroll = document.body.scrollWidth;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		yScroll = document.body.offsetHeight;
		xScroll = document.body.offsetWidth;
  	}
	$("#TB_overlay").css({"height": yScroll, "width": xScroll});
	$("#TB_HideSelect").css({"height": yScroll,"width": xScroll});
}

function TB_load_position() {
	var pagesize = TB_getPageSize();
	var arrayPageScroll = TB_getPageScrollTop();
	$("#TB_load")
		.css({left: (arrayPageScroll[0] + (pagesize[0] - 100)/2), top: (arrayPageScroll[1] + ((pagesize[1]-100)/2)) })
		.css({display:"block"});
}

function TB_parseQuery ( query ) {
	// return empty object
	if( !query )
		return {};
	var params = {};
	
	// parse query
	var pairs = query.split(/[;&]/);
	for ( var i = 0; i < pairs.length; i++ ) {
		var pair = pairs[i].split('=');
		if ( !pair || pair.length != 2 )
			continue;
		// unescape both key and value, replace "+" with spaces in value
		params[unescape(pair[0])] = unescape(pair[1]).replace(/\+/g, ' ');
   }
   return params;
}

function TB_getPageScrollTop(){
	var yScrolltop;
	var xScrollleft;
	if (self.pageYOffset || self.pageXOffset) {
		yScrolltop = self.pageYOffset;
		xScrollleft = self.pageXOffset;
	} else if (document.documentElement && document.documentElement.scrollTop || document.documentElement.scrollLeft ){	 // Explorer 6 Strict
		yScrolltop = document.documentElement.scrollTop;
		xScrollleft = document.documentElement.scrollLeft;
	} else if (document.body) {// all other Explorers
		yScrolltop = document.body.scrollTop;
		xScrollleft = document.body.scrollLeft;
	}
	arrayPageScroll = new Array(xScrollleft,yScrolltop) 
	return arrayPageScroll;
}

function TB_getPageSize(){
	var de = document.documentElement;
	var w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
	var h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight
	arrayPageSize = new Array(w,h) 
	return arrayPageSize;
}

function hideFlashContent() {
    $('.contains_flash').hide();
}

function showFlashContent() {
    $('.contains_flash').show();
}
// adding these functions since they are required for thickbox now
function setCookie(name, value, expires, path, domain, secure)
{
    document.cookie= name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

function deleteCookie ( cookie_name )
{
  var cookie_date = new Date ( );  // current date & time
  cookie_date.setTime ( cookie_date.getTime() - 1 );
  document.cookie = cookie_name += "=; expires=" + cookie_date.toGMTString();
}