/*
 * 	Easy Crossfade 1.7 - jQuery plugin
 *  Adaptation of Alen Grakilac's Easy Slider plugin
 *	http://cssglobe.com/post/4004/easy-slider-15-the-easiest-jquery-plugin-for-sliding
 *
 *  Modified to do fading by We the Media (http://wtmworldwide.com)
 *
 *	Copyright (c) 2009 Alen Grakalic (http://cssglobe.com)
 *	Dual licensed under the MIT (MIT-LICENSE.txt)
 *	and GPL (GPL-LICENSE.txt) licenses.
 *
 *	Built for jQuery library
 *	http://jquery.com
 *
 */
 
/*
 *	markup example for $("#slider").easyCrossfade();
 *	
 * 	<div id="slider">
 *		<ul>
 *			<li><img src="images/01.jpg" alt="" /></li>
 *			<li><img src="images/02.jpg" alt="" /></li>
 *			<li><img src="images/03.jpg" alt="" /></li>
 *			<li><img src="images/04.jpg" alt="" /></li>
 *			<li><img src="images/05.jpg" alt="" /></li>
 *		</ul>
 *	</div>
 *
 */

(function($) {

	$.fn.easyCrossfade = function(options){
	  
		// default configuration properties
		var defaults = {
			prevId: 		'prevBtn',
			prevText: 		'Previous',
			nextId: 		'nextBtn',
			nextText: 		'Next',
			controlsShow:	true,
			controlsBefore:	'',
			controlsAfter:	'',
			controlsFade:	true,
			firstId: 		'firstBtn',
			firstText: 		'First',
			firstShow:		false,
			lastId: 		'lastBtn',
			lastText: 		'Last',
			lastShow:		false,
			speed: 			800,
			auto:			false,
			pause:			2000,
			continuous:		false, 
			numeric: 		false,
			numericId: 		'controls',
			//added by James
			olToReplace:    'project_ol_info'
		}; 
		
		var options = $.extend(defaults, options);  

		this.each(function() {  
			var obj = $(this);
			var s = $("li", obj).length;
			var h = $("li", obj).height(); 
			var clickable = true;
			obj.height(h); 
			var ts = s-1;
			var t = 0;

      $("ul", obj).css("position", "relative")
      $("li", obj).css("position", "absolute").css("top", 0).css("left", 0);
      $("li:first", obj).css("z-index", 5);
      $("#project_arrow").css("z-index", 999);

			if(options.controlsShow){
				var html = options.controlsBefore;
				if(options.numeric){
					html += '<ol id="'+ options.numericId +'"></ol>';
				} else {
					if(options.firstShow) html += '<span id="'+ options.firstId +'"><a href=\"javascript:void(0);\">'+ options.firstText +'</a></span>';
					html += ' <span id="'+ options.prevId +'"><a href=\"javascript:void(0);\">'+ options.prevText +'</a></span>';
					html += ' <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\">'+ options.nextText +'</a></span>';
					if(options.lastShow) html += ' <span id="'+ options.lastId +'"><a href=\"javascript:void(0);\">'+ options.lastText +'</a></span>';
				};

				html += options.controlsAfter;
				$(obj).after(html);
			};

			//added by James
			var text_for_home_info_projects = new Array; 
			for(var i = 0; i<$("ol#"+options.olToReplace+" li").length; i++){
				text_for_home_info_projects[i] = $("li#home_select_project"+(i+1)+" a").html();
			}
			
			if(options.numeric){
				for(var i=0;i<s;i++){
					$(document.createElement("li"))
						.attr('id',options.numericId + (i+1))
						//added by james, put var from above to fit in link
						.html('<a rel='+ i +' href=\"javascript:void(0);\">'+ text_for_home_info_projects[i] +'</a>')
						.appendTo($("#"+ options.numericId))
						.click(function(){
							animate($("a",$(this)).attr('rel'),true);
						});
				};
			} else {
				$("a","#"+options.nextId).click(function(){
					animate("next",true);
				});
				$("a","#"+options.prevId).click(function(){
					animate("prev",true);
				});
				$("a","#"+options.firstId).click(function(){
					animate("first",true);
				});
				$("a","#"+options.lastId).click(function(){
					animate("last",true);
				});
			};

			function setCurrent(i){
				i = parseInt(i)+1;
				$("li", "#" + options.numericId).removeClass("current");
				$("li#" + options.numericId + i).addClass("current");
			};

			function adjust(){
				if(t>ts) t=0;		
				if(t<0) t=ts;	
				clickable = true;
				if(options.numeric) setCurrent(t);
			};
			//added by James
			var current_number = 1;
			function animate(dir,clicked){
				if (clicked) {
          clearTimeout(timeout);
          options.auto = false;
        }

				if (clickable){
					clickable = false;
					var ot = t;
          var fp = "." + options.faderPrefix + "_";

          // transition to beginning if we're 1) auto-playing 2) at the end
          if (true == options.auto && t == ts) {
            dir = "first";
          }

					switch(dir){
						case "next":
							t = (ot>=ts) ? (options.continuous ? t+1 : ts) : t+1;
							break; 
						case "prev":
							t = (t<=0) ? (options.continuous ? t-1 : 0) : t-1;
							break; 
						case "first":
							t = 0;
							break;
						case "last":
							t = ts;
							break; 
						default:
							t = dir;
							break; 
					};	
					var diff = Math.abs(ot-t);
					var speed = diff*options.speed;

          // frm Jordan
          i = parseInt(t) + 1;
          $((fp + current_number), obj).css("opacity", 1).css("z-index", 4);
          $((fp + i), obj).css("opacity", 0).css("z-index", 5);
          $((fp + i), obj).animate(
            { opacity: 1 },
            { queue:false, duration:speed, complete:adjust }
          );
          $((fp + i), obj).siblings().css("z-index", 1);
          $((fp + current_number), obj).css("z-index", 2);

					if(!options.continuous && options.controlsFade){
						if(t==ts){
							$("a","#"+options.nextId).hide();
							$("a","#"+options.lastId).hide();
						} else {
							$("a","#"+options.nextId).show();
							$("a","#"+options.lastId).show();
						};
						if(t==0){
							$("a","#"+options.prevId).hide();
							$("a","#"+options.firstId).hide();
						} else {
							$("a","#"+options.prevId).show();
							$("a","#"+options.firstId).show();
						};
					};

					if(options.auto && !clicked){;
						timeout = setTimeout(function(){
							animate("next",false);
						},diff*options.speed+options.pause);
					};

					//Added by James for WTM site
					if(dir == "next"){
						current_number ++;
						if(current_number >=4){
							current_number = 1;
						}
					} else if ("first" == dir) {
            current_number = 1;
          }else{
						current_number = dir;
						current_number ++;
					}
					var new_left = 20;
					if(current_number == 1){new_left=20};
					if(current_number == 2){new_left=260};
					if(current_number == 3){new_left=500};
					//also added for custom arrow
					//$("#project_arrow").css('top','5px');
					if($("#project_arrow").length){
						$('#project_arrow').animate({
							"left":new_left+"px"
						}, 500);
					}
				};	
			};
			// init
			var timeout;
			if(options.auto){;
				timeout = setTimeout(function(){
					animate("next",false);
				},options.pause);
			};

			if(options.numeric) setCurrent(0);

			if(!options.continuous && options.controlsFade){
				$("a","#"+options.prevId).hide();
				$("a","#"+options.firstId).hide();
			};

		});
	  //Added by James
		//switch out html
		$("#home_project_select_static").hide();
		$("#home_project_select").removeAttr("sizset").html();
	};

})(jQuery);