//Featured Content Glider: By http://www.dynamicdrive.com
//Created: Dec 22nd, 07'
//Updated (Oct 26th, 09 - Ahmed Masud): Added Fading Support: use "fade-in-place" for fade-in
//Updated (Jan 29th, 08): Added four possible slide directions: "updown", "downup", "leftright", or "rightleft"
//Updated (Feb 1st, 08): Changed glide behavior to reverse direction when previous button is clicked
//Updated (Feb 12th, 08): Added ability to retrieve gliding contents from an external file using Ajax ("remotecontent" variable added to configuration)
//Updated (July 21st, 09): Updated to work in jQuery 1.3.x

/*
 * JavaScript Debug - v0.3 - 6/8/2009
 * http://benalman.com/projects/javascript-debug.log-console-log/
 * 
 * Copyright (c) 2009 "Cowboy" Ben Alman
 * Licensed under the MIT license
 * http://benalman.com/about/license/
 * 
 * With lots of help from Paul Irish!
 * http://paulirish.com/
 */
// window.debug=(function(){var c=this,e=Array.prototype.slice,b=c.console,i={},f,g,j=9,d=["error","warn","info","debug.log","log"],m="assert clear count dir dirxml group groupEnd profile profileEnd time timeEnd trace".split(" "),k=m.length,a=[];while(--k>=0){(function(n){i[n]=function(){j!==0&&b&&b[n]&&b[n].apply(b,arguments)}})(m[k])}k=d.length;while(--k>=0){(function(n,o){i[o]=function(){var q=e.call(arguments),p=[o].concat(q);a.push(p);h(p);if(!b||!l(n)){return}b.firebug?b[o].apply(c,q):b[o]?b[o](q):b.log(q)}})(k,d[k])}function h(n){if(f&&(g||!b||!b.log)){f.apply(c,n)}}i.setLevel=function(n){j=typeof n==="number"?n:9};function l(n){return j>0?j>n:d.length+j<=n}i.setCallback=function(){var o=e.call(arguments),n=a.length,p=n;f=o.shift()||null;g=typeof o[0]==="boolean"?o.shift():false;p-=typeof o[0]==="number"?o.shift():n;while(p<n){h(a[p++])}};return i})();

window.debug = function(s) {
    window.console.log(s);
}

var featuredContentPresenter={
	csszindex: 100,
	ajaxloadingmsg: '<b>Fetching Content. Please wait...</b>',
	glide:function(config, showpage, isprev) {

		var selected=parseInt(showpage);

		if (selected>=config.$contentdivs.length) { //if no content exists at this index position
			debug.log("No content exists at page "+(selected+1)+"! Loading 1st page instead.");
			selected=0;
		}

		var $target=config.$contentdivs.eq(selected)
		var $prevtarget = config.$prevtarget;

		var $glider=config.$glider;

		if ( $prevtarget ) {
			$prevtarget.blur();
		}

		// Test for toggler not being initialized yet, or user clicks on the currently selected page):
		if (config.$togglerdiv.attr('lastselected')==null ||
			parseInt(config.$togglerdiv.attr('lastselected'))!=selected) {

			var $selectedlink=config.$toc.eq(selected);

			config.$next.attr('loadpage', (selected<config.$contentdivs.length-1)? selected+1+'pg' : 0+'pg');
			config.$prev.attr('loadpage', (selected==0)? config.$contentdivs.length-1+'pg' : selected-1+'pg');

			var startpoint=(isprev=="previous")? -config.startpoint : config.startpoint;

			// Hide content so it's just out of view before animating it

			$target.css(config.leftortop, startpoint)
				.css("zIndex", this.csszindex++ )
				.css("opacity", 0);
	

			// Animate it into view

			var endpoint=(config.leftortop=="left")? {left:0} : {top:0};
			endpoint['opacity'] = 1;

			$target.animate(endpoint, config.speed);

			config.$toc.removeClass('selected');
			$selectedlink.addClass('selected');
			config.$togglerdiv.attr('lastselected', selected+'pg');

			if ( config.scaleglider ) {
				this.adjustglidersize(config);
				debug.log ( "[1] Scale Glider: " +
					config.scaleglider + " " + $target.height() );
				$glider.css("height", $target.height());
			}
			$target.focus();
			config.$prevtarget = $target;
		}
	},

	getremotecontent:function($, config){
		config.$glider.html(this.ajaxloadingmsg);
		$.ajax({
			url: config.remotecontent,
			error:function(ajaxrequest) {
				config.$glider.html('Error fetching content.<br />Server Response: '+ajaxrequest.responseText);
			},
			success:function(content) {
				config.$glider.html(content);
				featuredContentPresenter.setuptoggler($, config);
			}
		})
	},

	adjustglidersize:function(config) {
		if ( config.adjustglidersize ) {
			var minHeight = 0;
			debug.log("Adjusting Glider Height to ");
			config.$contentdivs.each(function(index, item) {
				var height = jQuery(this).attr('offsetHeight');
				if ( height > minHeight ) minHeight = height;
			});

			if ( config.$glider.height() > minHeight ) 
				minHeight = config.$glider.height();
			minHeight  = minHeight + (isNaN(config.adjustdelta ) ? 0 : config.adjustdelta);
			config.$glider.css("height", minHeight)
			debug.log("... " + minHeight + "px");
		}

	},

	aligncontents:function($, config){
		config.$contentdivs=$("#"+config.gliderid+" ."+config.contentclass);
		// incase we want to calculate how big our slides acutally are
		// can be controlled using max-height css attribute

		// Position content divs so they're out of view:
		this.adjustglidersize(config);
		config.$contentdivs
			.css(config.leftortop, config.startpoint)
			.css("visibility", 'visible');

		config.$contentdivs.each(function(index) {
			if ( $(this).attr("onfocus") ) {
				$(this).bind("focus", $(this).attr("onfocus"));
			}
			if ( $(this).attr("onblur") ) { 
				$(this).bind("blur", $(this).attr("onblur"));
			}
		});

		if ( !config.scaleglider )
			config.$contentdivs.css({height: config.$glider.height()})

		if ( config.direction = "fade-in-place" ) {
			config.$contentdivs.css ("opacity", 0);
		}
	},

	setuptoggler:function($, config){
		this.aligncontents($, config);
		config.$togglerdiv.hide();
		config.$toc.each(function(index) {
			$(this).attr('pagenumber', index+'pg');
			if (index > (config.$contentdivs.length-1)) {
				$(this).css({display: 'none'}) //hide redundant "toc" links
			}
		});
		var $nextandprev=$("#"+config.togglerid+" .next, #"+config.togglerid+" .prev");
		$nextandprev.click(function(event) { //Assign click behavior to 'next' and 'prev' links
			featuredContentPresenter.glide(config, this.getAttribute('loadpage'),
				this.getAttribute('buttontype'));
			event.preventDefault(); //cancel default link action
		})

		if ( config.toggletype == "hover" ) {
			config.$toc.hover(function(event) {
				featuredContentPresenter.glide(config, this.getAttribute('pagenumber'));
				config.pauserotation = true;
			}, 
			function(event) {
				config.pauserotation = false;
			});
		}
		else {
			config.$toc.click(function(event){ //Assign click behavior to 'toc' links
				featuredContentPresenter.glide(config, this.getAttribute('pagenumber'));
				event.preventDefault();
			})
		}

		config.$togglerdiv.fadeIn(1000, function(){
			featuredContentPresenter.glide(config, config.selected);
			if (config.autorotate==true) { //auto rotate contents?
				config.stepcount=0; //set steps taken
 				// Total steps limit: num of contents x num of user specified cycles)
				config.totalsteps=config.$contentdivs.length*config.autorotateconfig[1];
				featuredContentPresenter.autorotate(config);
			}
		})
		config.$togglerdiv.click(function(){
			featuredContentPresenter.cancelautorotate(config.togglerid);
		})
	},

	autorotate:function(config){
		var rotatespeed=config.speed+config.autorotateconfig[0];
		window[config.togglerid+"timer"]=setInterval(function(){
			if (config.totalsteps>0 && config.stepcount>=config.totalsteps) {
				clearInterval(window[config.togglerid+"timer"]);
			}
			else{
				if (!config.pauserotation) { 
					config.$next.triggerHandler('click');
					config.stepcount++;
				}
			}
		}, rotatespeed)
	},

	cancelautorotate:function(togglerid){
		if (window[togglerid+"timer"]);
			clearInterval(window[togglerid+"timer"]);
	},

	getCookie:function(Name){ 
		//construct RE to search for target name/value pair
		var re=new RegExp(Name+"=[^;]+", "i");
		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){
		jQuery(document).ready(function($){

			config.$glider=$("#"+config.gliderid);
			config.$togglerdiv=$("#"+config.togglerid);
			config.$toc=config.$togglerdiv.find('.toc');
			config.$next=config.$togglerdiv.find('.next');
			config.$prev=config.$togglerdiv.find('.prev');
			config.$prev.attr('buttontype', 'previous');
			config.pauserotation = false;

			var selected=(config.persiststate)?
				featuredContentPresenter.getCookie(config.gliderid)
				: config.selected;

			//test for cookie value containing null (1st page load) or "undefined" string
			config.selected=(isNaN(parseInt(selected))) ? config.selected : selected;

			if (typeof(config.direction)!= "undefined" ) {

 				//set which CSS property to manipulate based on "direction"
				config.leftortop=(/up/i.test(config.direction))? "top" : "left";

				//Get glider height or width based on "direction"
				config.heightorwidth=(/up/i.test(config.direction)) ?
					config.$glider.height() : config.$glider.width();

				//set initial position of contents based on "direction"
				config.startpoint=(/^(left|up)/i.test(config.direction))?
					-config.heightorwidth : config.heightorwidth;
			}
			else {
				config.direction = "fade-in-place";
			}

			if ( config.direction == "fade-in-place" ) {
				config.startpoint = 0;
			}

			if (typeof config.remotecontent!="undefined" && config.remotecontent.length>0) {
				featuredContentPresenter.getremotecontent($, config);
			} 
			else {
				featuredContentPresenter.setuptoggler($, config);
			}

			$(window).bind('unload', function(){ //clean up and persist
				config.$togglerdiv.unbind('click');
				config.$toc.unbind('click');
				config.$next.unbind('click');
				config.$prev.unbind('click');
				if (config.persiststate) {
					featuredContentPresenter.setCookie(config.gliderid,
						config.$togglerdiv.attr('lastselected'));
				}
				config=null;
				
			})
		})
	}
}