/*
 * 	Easy Slider 1.8 - jQuery plugin
 *	written by Alen Grakalic (modified by Kyle Florence - kyle.florence@gmail.com)
 *	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,
            insertAfter: true,
            firstId: 'firstBtn',
            firstText: 'First',
            firstShow: false,
            lastId: 'lastBtn',
            lastText: 'Last',
            lastShow: false,
            vertical: false,
            speed: 800,
            ease: 'swing',
            auto: false,
            pause: 2000,
            continuous: false,
            prevNext: true,
            numeric: false,
            numericId: 'controls',
            hoverPause: false,
            manual: false
        };

        var options = $.extend(defaults, options);

        this.each(function() {
            var obj = $(this);
            // Fix for nested list items
            var ul = obj.children("ul");
            var li = ul.children("li");

            var s = li.length;
            var w = obj.width();
            var h = obj.height();

            var t = 0;
            var ts = s - 1;
            var clickable = true;

            // Set obj overflow to hidden
            obj.css("overflow", "hidden");

            // Set width/height of list items based on width/height of obj
            li.each(function() {
                if (options.vertical)
                    $(this).height(h);
                else
                    $(this).width(w);
            });

            // Float items to the left
            li.css('float', 'left');

            // Set width/height of ul
            if (options.vertical)
                ul.height(s * w);
            else
                ul.width(s * h);

            // Clone elements for continuous scrolling
            if (options.continuous) {
                if (options.vertical) {
                    ul.prepend(li.filter(":last-child").clone().css("margin-top", "-" + h + "px"));
                    ul.append(li.filter(":nth-child(2)").clone());
                    ul.height((s + 1) * h);
                } else {
                    ul.prepend(li.filter(":last-child").clone().css("margin-left", "-" + w + "px"));
                    ul.append(li.filter(":nth-child(2)").clone());
                    ul.width((s + 1) * w);
                }
            };

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

                if (options.insertAfter)
                    $(obj).after(html);
                else
                    $(obj).before(html);
            };
            if (options.manual) {
                $("#controls li").click(function() {
                    var id = $("a", $(this)).attr('rel');
                    animate(id, true);
                    return false;
                });
            }
            else {
                if (options.numeric) {
                    for (var i = 0; i < s; i++) {
                        $(document.createElement("li"))
                .attr('id', options.numericId + (i + 1))
                .html('<a rel="' + i + '" href="#"><span>' + (i + 1) + '</span></a>')
                .appendTo($("#" + options.numericId))
                .click(function() {
                    animate($("a", $(this)).attr('rel'), true);
                    return false;
                });
                    };
                }
            }

            if (options.prevNext) {
                $("a", "#" + options.nextId).click(function() {
                    animate("next", true); return false;
                });
                $("a", "#" + options.prevId).click(function() {
                    animate("prev", true); return false;
                });
                $("a", "#" + options.firstId).click(function() {
                    animate("first", true); return false;
                });
                $("a", "#" + options.lastId).click(function() {
                    animate("last", true); return false;
                });
            };

            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.css("margin-left", (t * w * -1));
                } else {
                    ul.css("margin-top", (t * h * -1));
                }
                clickable = true;
                if (options.numeric) setCurrent(t);
            };

            $("#pause").click(function() {
                clearTimeout(timeout);
                return false;
            });

            $("#continue").click(function() {
                if (options.continuous) {
                    animate("next", false);
                } else {
                    animate("next", true);
                }
                return false;
            });

            if (options.hoverPause) {
                $('#slider').mouseenter(function() {
                    //animate("stop", true);
                    clearTimeout(timeout);
                });
              /*  $('#slider').mouseleave(function() {
                    if (options.continuous) {
                        animate("next", false);
                    } else {
                        animate("next", true);
                    }
                });*/
            };


            function animate(dir, clicked) {
                //alert('hey');
                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;
                        case "stop":
                            t = t;
                            break;
                        default:
                            t = parseInt(dir);
                            break;
                    };

                    var diff = Math.abs(ot - t);
                    //var speed = diff * options.speed;
                    var speed = options.speed / diff;
                    if (!options.vertical) {
                        p = (t * w * -1);
                        ul.animate(
                            { marginLeft: p },
                            {
                                queue: false,
                                duration: speed,
                                easing: options.ease,
                                complete: adjust
                            }
                        );
                    } else {
                        p = (t * h * -1);
                        ul.animate(
                            { marginTop: p },
                            {
                                queue: false,
                                duration: speed,
                                easing: options.ease,
                                complete: adjust
                            }
                        );
                    };

                    if (!options.continuous && options.controlsFade) {
                        if (t == 0) {
                            $("a", "#" + options.prevId).fadeOut('slow');
                            $("a", "#" + options.firstId).fadeOut('slow');
                        } else if (t == ts) {
                            $("a", "#" + options.nextId).fadeOut('slow');
                            $("a", "#" + options.lastId).fadeOut('slow');
                        } else {
                            $("a", "#" + options.prevId).fadeIn('slow');
                            $("a", "#" + options.firstId).fadeIn('slow');
                            $("a", "#" + options.nextId).fadeIn('slow');
                            $("a", "#" + options.lastId).fadeIn('slow');
                        };
                    };

                    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);