//Accordion Content script: By Dynamic Drive, at http://www.dynamicdrive.com
//Created: Jan 7th, 08'
//Version 1.3: April 3rd, 08':
//**1) Script now no longer conflicts with other JS frameworks
//**2) Adds custom oninit() and onopenclose() event handlers that fire when Accordion Content instance has initialized, plus whenever a header is opened/closed
//**3) Adds support for expanding header(s) using the URL parameter (ie: http://mysite.com/accordion.htm?headerclass=0,1)
//April 9th, 08': Fixed "defaultexpanded" setting not working when page first loads

jQuery.noConflict()

var ddaccordion = {
	
	contentclassname:{}, //object to store corresponding contentclass name based on headerclass

	expandone:function(headerclass, selected){ //PUBLIC function to expand a particular header
		this.toggleone(headerclass, selected, "expand")
	},

	collapseone:function(headerclass, selected){ //PUBLIC function to collapse a particular header
		this.toggleone(headerclass, selected, "collapse")
	},

	expandall:function(headerclass){ //PUBLIC function to expand all headers based on their shared CSS classname
		var $=jQuery
		var $headers=$('.'+headerclass)
		$('.'+this.contentclassname[headerclass]+':hidden').each(function(){
			$headers.eq(parseInt($(this).attr('contentindex'))).click()
		})
	},

	collapseall:function(headerclass){ //PUBLIC function to collapse all headers based on their shared CSS classname
		var $=jQuery
		var $headers=$('.'+headerclass)
		$('.'+this.contentclassname[headerclass]+':visible').each(function(){
			$headers.eq(parseInt($(this).attr('contentindex'))).click()
		})
	},

	toggleone:function(headerclass, selected, optstate){ //PUBLIC function to expand/ collapse a particular header
		var $=jQuery
		var $targetHeader=$('.'+headerclass).eq(selected)
		var $subcontent=$('.'+this.contentclassname[headerclass]).eq(selected)
		if (typeof optstate=="undefined" || optstate=="expand" && $subcontent.is(":hidden") || optstate=="collapse" && $subcontent.is(":visible"))
			$targetHeader.click()
	},

	expandit:function($targetHeader, $targetContent, config, isclicked){
		//$targetContent.slideDown(config.animatespeed, function(){config.onopenclose($targetHeader.get(0), parseInt($targetHeader.attr('headerindex')), $targetContent.css('display'), isclicked)})
		$targetContent.show()
		this.transformHeader($targetHeader, config, "expand")
		//alert("expandit: $targetHeader=" + $targetHeader + " $targetContent=" + $targetContent)
	},

	collapseit:function($targetHeader, $targetContent, config, isclicked){
		$targetContent.slideUp(config.animatespeed, function(){config.onopenclose($targetHeader.get(0), parseInt($targetHeader.attr('headerindex')), $targetContent.css('display'), isclicked)})
		//$targetContent.slideUp()
		this.transformHeader($targetHeader, config, "collapse")
		//alert("collapseit: $targetHeader=" + $targetHeader + " $targetContent=" + $targetContent)
	},

	transformHeader:function($targetHeader, config, state) {
		//alert("transformHeader: $targetHeader=" + $targetHeader + " state=" + state)
		$targetHeader.addClass((state=="expand")? config.cssclass.expand : config.cssclass.collapse) //alternate btw "expand" and "collapse" CSS classes
		.removeClass((state=="expand")? config.cssclass.collapse : config.cssclass.expand)
		//if (config.htmlsetting.location=='src'){ //Change header image (assuming header is an image)?
			//$targetHeader=($targetHeader.is("img"))? $targetHeader : $targetHeader.find('img').eq(0) //Set target to either header itself, or first image within header
			//$targetHeader.attr('src', (state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse) //change header image
		//}
		//else if (config.htmlsetting.location=="prefix") //if change "prefix" HTML, locate dynamically added ".accordprefix" span tag and change it
			//$targetHeader.find('.accordprefix').html((state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse)
		//else if (config.htmlsetting.location=="suffix")
			//$targetHeader.find('.accordsuffix').html((state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse)
	},

	urlparamselect:function(headerclass){
		var result=window.location.search.match(new RegExp(headerclass+"=((\\d+)(,(\\d+))*)", "i")) //check for "?headerclass=2,3,4" in URL
		if (result!=null)
			result=RegExp.$1.split(',')
		return result //returns null, [index], or [index1,index2,etc], where index are the desired selected header indices
	},

	getCookie:function(Name){ 
		var re=new RegExp(Name+"=[^;]+", "i") //construct RE to search for target name/value pair
		if (document.cookie.match(re)) //if cookie found
			return document.cookie.match(re)[0].split("=")[1] //return its value
		return null
	},

	setCookie:function(name, value){
		document.cookie = name + "=" + value
	},

	init: function(config) {
	    document.write('<style type="text/css">\n')
	    document.write('.'+config.contentclass+'{display: none}\n') //generate CSS to hide contents
	    document.write('<\/style>')
	    jQuery(document).ready(function($) {
		    //ddaccordion.urlparamselect(config.headerclass)
		    //var persistedheaders=ddaccordion.getCookie(config.headerclass)
		    ddaccordion.contentclassname[config.headerclass] = config.contentclass; //remember contentclass name based on headerclass
		    config.cssclass = {collapse: config.toggleclass[0], expand: config.toggleclass[1]}; //store expand and contract CSS classes as object properties
		    //config.htmlsetting={location: config.togglehtml[0], collapse: config.togglehtml[1], expand: config.togglehtml[2]} //store HTML settings as object properties
		    //config.oninit=(typeof config.oninit=="undefined")? function(){} : config.oninit //attach custom "oninit" event handler
		    //config.onopenclose=(typeof config.onopenclose=="undefined")? function(){} : config.onopenclose //attach custom "onopenclose" event handler
		    //var lastexpanded={} //object to hold reference to last expanded header and content (jquery objects)
		    //var expandedindices=ddaccordion.urlparamselect(config.headerclass) || ((config.persiststate && persistedheaders!=null)? persistedheaders : config.defaultexpanded)
		    //if (typeof expandedindices=='string') //test for valid cookie ('string'), invalid being null or 1st page load
			    //expandedindices=expandedindices.replace(/c/ig, '').split(',') //if valid, change to array value
		    var $subcontents = $('.'+config["contentclass"]);
		    //if (!(expandedindices instanceof Array)) //check for invalid expandedindices value
			    //expandedindices=[]
		    //if (config["collapseprev"] && expandedindices.length>1)
			    //expandedindices=[expandedindices.pop()] //return last array element as an array (for sake of jQuery.inArray())
    		
		    $('.' + config["headerclass"]).each(function(index) { //loop through all headers
			    //if (/(prefix)|(suffix)/i.test(config.htmlsetting.location) && $(this).html()!=""){ //add a SPAN element to header depending on user setting and if header is a container tag
				    //$('<span class="accordprefix"></span>').prependTo(this)
				    //$('<span class="accordsuffix"></span>').appendTo(this)
			    //}
    			
			    if ($(this).hasClass(config.toggleclass[1])) {
			        var subcontent = $(this).children('.' + config["contentclass"]);
			        ddaccordion.expandit($(this), subcontent, config, false);
			    }
    			
			    //$(this).attr('headerindex', index+'h') //store position of this header relative to its peers
			    //$subcontents.eq(index).attr('contentindex', index+'c') //store position of this content relative to its peers
			    //var $subcontent=$subcontents.eq(index)
    			
			    //if (jQuery.inArray(index, expandedindices)!=-1){ //check for headers that should be expanded automatically
				    //if (config.animatedefault==false)
					    //$subcontent.show()
				    //ddaccordion.expandit($(this), $subcontent, config, false) //Last Boolean value sets 'isclicked' parameter
				    //lastexpanded={$header:$(this), $content:$subcontent}
			    //}  //end check
			    //else
			    //{
				    //$subcontent.hide()
				    //config.onopenclose($(this).get(0), parseInt($(this).attr('headerindex')), $subcontent.css('display'), false) //Last Boolean value sets 'isclicked' parameter
				    /*ddaccordion.transformHeader($(this), config, "collapse")*/ //DWR Oct/22/09
			    //}
		    });
    		
    		$('.' + config["headerclass"]).click(function() { //assign behavior when headers are clicked on
    		    var $subcontent = $(this).children('.' + config["contentclass"]);
    		    if ($subcontent.css('display') == "none") {
    		        ddaccordion.expandit($(this), $subcontent, config, true);
    		    } else {
    		        ddaccordion.collapseit($(this), $subcontent, config, true);
    		    }
    		
//    				var $subcontent=$subcontents.eq(parseInt($(this).attr('headerindex'))) //get subcontent that should be expanded/collapsed
//    				if ($subcontent.css('display')=="none"){
//    					ddaccordion.expandit($(this), $subcontent, config, true) //Last Boolean value sets 'isclicked' parameter
//    					if (config["collapseprev"] && lastexpanded.$header && $(this).get(0)!=lastexpanded.$header.get(0)){ //collapse previous content?
//    						ddaccordion.collapseit(lastexpanded.$header, lastexpanded.$content, config, true) //Last Boolean value sets 'isclicked' parameter
//    					}
//    					lastexpanded={$header:$(this), $content:$subcontent}
//    				}
//    				else
//    				{
//    					ddaccordion.collapseit($(this), $subcontent, config, true) //Last Boolean value sets 'isclicked' parameter
//    				}
    				return false;
     	    });
     	    
     	    $('.' + config["contentclass"]).find("." + config["headerclass"]).unbind('click');
     	    
//     	    (function() {
//     	        return true;
//     	    });
     	    
     	    $('.' + config["headerclass"]).find("li").click(function(event){ // stop propagation of click events from children
     	        event.stopPropagation();
     	    });

    		//config.oninit($('.'+config["headerclass"]).get(), expandedindices)
    		$(window).bind('unload', function(){ //clean up and persist on page unload
    			$('.'+config["headerclass"]).unbind('click')
    			//var expandedindices=[]
    			//$('.'+config["contentclass"]+":visible").each(function(index){ //get indices of expanded headers
    				//expandedindices.push($(this).attr('contentindex'))
    			//})
//    			if (config.persiststate==true){ //persist state?
//    				expandedindices=(expandedindices.length==0)? '-1c' : expandedindices //No contents expanded, indicate that with dummy '-1c' value?
//    				ddaccordion.setCookie(config.headerclass, expandedindices)
    //			}
    		})
	    });
	}
};