/*
 *  Easy Slider 1.7 - jQuery plugin 
 *  written by Alen Grakalic    
 *  http://cssglobe.com/post/4004/easy-slider-15-the-easiest-jquery-plugin-for-sliding
 *  
 *  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
 *
 */
(function($) {

    $.fn.easySlider = function(options){
      
        // default configuration properties
        /* 
         * additions to original:
         * pause/play options - to add pause/play button to controls
         * buttonClass - declare CSS class of controls for better... uh, control...
         * 
         */
        var defaults = {            
            prevId:         'prevBtn',
            prevText:       'Previous',
            nextId:         'nextBtn',  
            nextText:       'Next',
            firstId:        'firstBtn',
            firstText:      'First',
            firstShow:      false,
            lastId:         'lastBtn',  
            lastText:       'Last',
            lastShow:       false,              
            pauseId:        'pauseBtn',
            pauseText:      'Pause',
            pauseShow:      true,
            playId:         'playBtn',
            playText:       'Play',
            playShow:       false,
            controlsShow:   true,
            controlsBefore: '',
            controlsAfter:  '', 
            controlsFade:   true,
            vertical:       false,
            speed:          800,
            auto:           false,
            pause:          2000,
            continuous:     false, 
            numeric:        false,
            numericId:      'controls',
            buttonClass:    'esControl'
        }; 
        
        var options = $.extend(defaults, options);  
        var slider=$(this);
       
                 
        this.each(function() {  
            var obj = $(this);              
            var s = $("li", obj).length;
            var w = $("li", obj).width(); 
            var h = $("li", obj).height(); 
            var clickable = true;
            obj.width(w); 
            obj.height(h); 
            obj.css("overflow","hidden");
            var ts = s-1;
            var t = 0;
           
            $("ul", obj).css('width',s*w);          
            
            if(options.continuous){
                $("ul", obj).prepend($("ul li:last-child", obj).clone().css("margin-left","-"+ w +"px"));
                $("ul", obj).append($("ul li:nth-child(2)", obj).clone());
                $("ul", obj).css('width',(s+1)*w);
            };              
            
            if(!options.vertical) $("li", obj).css('float','left');
                                
            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 +'" class="'+options.buttonClass+'"><a href=\"javascript:void(0);\" title="'+ options.firstText +'">&nbsp;</a></span>';
                    
                    html += ' <span id="'+ options.prevId +'" class="'+options.buttonClass+'"><a href=\"javascript:void(0);\" title="'+ options.prevText +'">&nbsp;</a></span>';
                    
                    if(options.pauseShow) html += '<span id="'+ options.pauseId +'" class="'+options.buttonClass+(options.auto?' playing':' paused')+'"><a href=\"javascript:void(0);\" title="'+ options.pauseText +'">&nbsp;</a></span>';
                    
                    if(options.playShow) html += '<span id="'+ options.playId +'"  class="'+options.buttonClass+'"><a href=\"javascript:void(0);\" title="'+ options.playText +'">&nbsp;</a></span>';
                    
                    html += ' <span id="'+ options.nextId +'" class="'+options.buttonClass+'"><a href=\"javascript:void(0);\" title="'+ options.nextText +'">&nbsp;</a></span>';
                    
                    if(options.lastShow) html += ' <span id="'+ options.lastId +'"  class="'+options.buttonClass+'"><a href=\"javascript:void(0);\" title="'+ options.lastText +'">&nbsp;</a></span>';  
                    
                                
                };
                
                html += options.controlsAfter;                      
                $(obj).after(html);                                     
            };
            
            $("a","#"+options.pauseId).toggle(function(){

                        clearTimeout();
                        animate("stop",true);
                        clickable = true;
                        $("a","#"+options.pauseId).parent().removeClass('playing');
                        $("a","#"+options.pauseId).parent().addClass('paused');             
                    },
                    function(){
                        
                        animate("next",false);
                        $("a","#"+options.pauseId).parent().removeClass('paused');   
                        $("a","#"+options.pauseId).parent().addClass('playing');           
                    });
                    
            if(options.numeric){                                    
                for(var i=0;i<s;i++){                       
                    $(document.createElement("li"))
                        .attr('id',options.numericId + (i+1))
                        .html('<a rel='+ i +' href=\"javascript:void(0);\">'+ (i+1) +'</a>')
                        .appendTo($("#"+ 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;   
                if(!options.vertical) {
                    $("ul",obj).css("margin-left",(t*w*-1));
                } else {
                    $("ul",obj).css("margin-left",(t*h*-1));
                }
                clickable = true;
                if(options.numeric) setCurrent(t);
                 $("#current").html(t+1);
            };
            
            function animate(dir,clicked){
                if (clickable){
           
                    clickable = false;
                    var ot = t;       
                    $("#current").html(t+1);
                    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;
                        case "stop":
                            //clickable=true;
                            t=t;
                            break;               
                        default:
                            t = dir;
                            break; 
                    };  
                    var diff = Math.abs(ot-t);
                    var speed = diff*options.speed;                     
                    if(!options.vertical) {
                        p = (t*w*-1);
                        $("ul",obj).animate(
                            { marginLeft: p }, 
                            { queue:false, duration:speed, complete:adjust }
                        );              
                    } else {
                        p = (t*h*-1);
                        $("ul",obj).animate(
                            { marginTop: p }, 
                            { queue:false, duration:speed, complete:adjust }
                        );                  
                    };
                    
                    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(clicked) clearTimeout(timeout);
                    if(options.auto && dir=="next" && !clicked){
                        timeout = setTimeout(function(){
                            animate("next",false);
                        },diff*options.speed+options.pause);
                    };
            
                };
                
            };
            // 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();              
            };              
            
        });
      
    };

})(jQuery);