/*
 *     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
 *
 */
 
/*
 *    markup example for $("#slider").easySlider();
 *    
 *     <div id="slider">
 *        <ul>
 *            <li><img src="images/01.jpg" alt="" /></li>
 *            <li><img src="images/02.jpg" alt="" /></li>
 *            <li><img src="images/03.jpg" alt="" /></li>
 *            <li><img src="images/04.jpg" alt="" /></li>
 *            <li><img src="images/05.jpg" alt="" /></li>
 *        </ul>
 *    </div>
 *
 */
(function($) {
    $.fn.easySlider = 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,                
            vertical:        false,
            speed:             800,
            auto:            false,
            pause:            2000,
            continuous:        false, 
            numeric:         false,
            numericId:         'controls'
        }; 
        
        var options = $.extend(defaults, options);  
                
        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 +'"><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);                                        
            };
            
            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);
            };
            
            function animate(dir,clicked){
                if (clickable){
                    clickable = false;
                    var ot = t;                
                    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;                        
                    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);
 

/**
 * This jQuery plugin displays pagination links inside the selected elements.
 *
 * @author Gabriel Birke (birke *at* d-scribe *dot* de)
 * @version 1.2
 * @param {int} maxentries Number of entries to paginate
 * @param {Object} opts Several options (see README for documentation)
 * @return {Object} jQuery Object
 */
jQuery.fn.pagination = function(maxentries, opts){
    opts = jQuery.extend({
        items_per_page:10,
        num_display_entries:10,
        current_page:0,
        num_edge_entries:0,
        link_to:"#",
        prev_text:"&lt; Prev",
        next_text:"Next &gt;",
        ellipse_text:"...",
        prev_show_always:true,
        next_show_always:true,
        callback:function(){return false;}
    },opts||{});
    
    return this.each(function() {
        /**
         * Calculate the maximum number of pages
         */
        function numPages() {
            return Math.ceil(maxentries/opts.items_per_page);
        }
        
        /**
         * Calculate start and end point of pagination links depending on 
         * current_page and num_display_entries.
         * @return {Array}
         */
        function getInterval()  {
            var ne_half = Math.ceil(opts.num_display_entries/2);
            var np = numPages();
            var upper_limit = np-opts.num_display_entries;
            var start = current_page>ne_half?Math.max(Math.min(current_page-ne_half, upper_limit), 0):0;
            var end = current_page>ne_half?Math.min(current_page+ne_half, np):Math.min(opts.num_display_entries, np);
            return [start,end];
        }
        
        /**
         * This is the event handling function for the pagination links. 
         * @param {int} page_id The new page number
         */
        function pageSelected(page_id, evt){
            current_page = page_id;
            drawLinks();
            var continuePropagation = opts.callback(page_id, panel);
            if (!continuePropagation) {
                if (evt.stopPropagation) {
                    evt.stopPropagation();
                }
                else {
                    evt.cancelBubble = true;
                }
            }
            return continuePropagation;
        }
        
        /**
         * This function inserts the pagination links into the container element
         */
        function drawLinks() {
            panel.empty();
            var interval = getInterval();
            var np = numPages();
            // This helper function returns a handler function that calls pageSelected with the right page_id
            var getClickHandler = function(page_id) {
                return function(evt){ return pageSelected(page_id,evt); }
            }
            // Helper function for generating a single link (or a span tag if it's the current page)
            var appendItem = function(page_id, appendopts){
                page_id = page_id<0?0:(page_id<np?page_id:np-1); // Normalize page id to sane value
                appendopts = jQuery.extend({text:page_id+1, classes:""}, appendopts||{});
                if(page_id == current_page){
                    var lnk = jQuery("<span class='current'>"+(appendopts.text)+"</span>");
                }
                else
                {
                    var lnk = jQuery("<a>"+(appendopts.text)+"</a>")
                        .bind("click", getClickHandler(page_id))
                        .attr('href', opts.link_to.replace(/__id__/,page_id));
                        
                        
                }
                if(appendopts.classes){lnk.addClass(appendopts.classes);}
                panel.append(lnk);
            }
            // Generate "Previous"-Link
            if(opts.prev_text && (current_page > 0 || opts.prev_show_always)){
                appendItem(current_page-1,{text:opts.prev_text, classes:"prev"});
            }
            // Generate starting points
            if (interval[0] > 0 && opts.num_edge_entries > 0)
            {
                var end = Math.min(opts.num_edge_entries, interval[0]);
                for(var i=0; i<end; i++) {
                    appendItem(i);
                }
                if(opts.num_edge_entries < interval[0] && opts.ellipse_text)
                {
                    jQuery("<span>"+opts.ellipse_text+"</span>").appendTo(panel);
                }
            }
            // Generate interval links
            for(var i=interval[0]; i<interval[1]; i++) {
                appendItem(i);
            }
            // Generate ending points
            if (interval[1] < np && opts.num_edge_entries > 0)
            {
                if(np-opts.num_edge_entries > interval[1]&& opts.ellipse_text)
                {
                    jQuery("<span>"+opts.ellipse_text+"</span>").appendTo(panel);
                }
                var begin = Math.max(np-opts.num_edge_entries, interval[1]);
                for(var i=begin; i<np; i++) {
                    appendItem(i);
                }
                
            }
            // Generate "Next"-Link
            if(opts.next_text && (current_page < np-1 || opts.next_show_always)){
                appendItem(current_page+1,{text:opts.next_text, classes:"next"});
            }
        }
        
        // Extract current_page from options
        var current_page = opts.current_page;
        // Create a sane value for maxentries and items_per_page
        maxentries = (!maxentries || maxentries < 0)?1:maxentries;
        opts.items_per_page = (!opts.items_per_page || opts.items_per_page < 0)?1:opts.items_per_page;
        // Store DOM element for easy access from all inner functions
        var panel = jQuery(this);
        // Attach control functions to the DOM element 
        this.selectPage = function(page_id){ pageSelected(page_id);}
        this.prevPage = function(){ 
            if (current_page > 0) {
                pageSelected(current_page - 1);
                return true;
            }
            else {
                return false;
            }
        }
        this.nextPage = function(){ 
            if(current_page < numPages()-1) {
                pageSelected(current_page+1);
                return true;
            }
            else {
                return false;
            }
        }
        // When all initialisation is done, draw the links
        drawLinks();
        // call callback function
        opts.callback(current_page, this);
    });
}