/*
 *  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',
            onChangedCallback: null
        };
 
        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 showMeta(i) {
                document.getElementById("fss_meta").style.display = "block";
                debugger;
                var a = $("ul", obj);
                $("#fss_meta h3").html($("#fss ul:nth-child(" + i + ") img").attr("alt"));
                $("#fss_meta p").html(options.metaInfo[i - 1]);
            };
 
            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);
                if (options.onChangedCallback) options.onChangedCallback(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.onChangedCallback)
                options.onChangedCallback(0);
 
            if (!options.continuous && options.controlsFade) {
                $("a", "#" + options.prevId).hide();
                $("a", "#" + options.firstId).hide();
            };
 
        });
 
    };
 
})(jQuery);