/*
 * 	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: 'sliderPrev',
            prevText: 'Previous',
            nextId: 'sliderNext',
            autoPlayStartId: 'sliderStartAutoPlay',
            autoPlayEndId: 'sliderEndAutoPlay',
            subtitleId: 'subtitle',
            subTitleButtonId: 'subtitleToggleButton',
            countDivider: '/',
            sliderCountId: 'sliderCount',
            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',

            sliderId: ""
        };

        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;
            var subtitleHidden = false;
            var subTitleButtonText = $('#' + options.subTitleButtonId + ' p').eq(0).text();
            setShowHideText(subTitleButtonText.split("/")[0]);
            options.sliderId = obj.attr('id');
            obj.width(w);
            obj.height(h);
            obj.css("overflow", "hidden");
            var ts = s - 1;
            var t = 0;
            $("ul", obj).css('width', s * w);
            updateCount();
            setSubtitleText(getAltByIndex(0));

            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>';
                    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", $(this)).attr('rel'), true);
						});
                };
            } else {
                /*$("#"+options.subtitleId).click(function()
                {
                hideText();
                });*/

                $("#" + options.subTitleButtonId).click(function() {
                    var subtitlePosition = parseInt($('#' + options.subtitleId).css("bottom"));
                    var hidden = (subtitlePosition < 0);
                    if (hidden) {
                        setShowHideText(subTitleButtonText.split("/")[0]);
                        subtitleHidden = false;
                        showSubtitle();
                    }
                    else {
                        setShowHideText(subTitleButtonText.split("/")[1]);
                        subtitleHidden = true;
                        hideSubtitle();
                    }

                });
                $("#" + options.autoPlayStartId).click(function() {
                    options.auto = true;
                    animate("next", false, true);
                });
                $("#" + options.autoPlayEndId).click(function() {
                    options.auto = false;
                    animate("none", false, true);
                });
                $("#" + options.nextId).click(function() {
                    animate("next", true);
                });
                $("#" + options.prevId).click(function() {
                    animate("prev", true);
                });
                $("a", "#" + options.firstId).click(function() {
                    animate("first", true);
                });
                $("a", "#" + options.lastId).click(function() {
                    animate("last", true);
                });
            };

            function setShowHideText(text) {
                $('#' + options.subTitleButtonId + ' p').eq(0).text(text);
            }

            function hideSubtitle(newSubtitle, onComplete) {
                var speed = options.speed / 2;
                $("#" + options.subtitleId).animate(
					{ bottom: '-70px' },
					{ queue: false, duration: speed,
					    complete: function() {
					        setSubtitleText(newSubtitle);
					        if (onComplete != undefined && onComplete != null)
					            onComplete();
					    }
					}
				);
            }

            function showSubtitle() {
                if (subtitleHidden)
                    return;
                var speed = options.speed / 2;
                $("#" + options.subtitleId).animate(
					{ bottom: 0 },
					{ queue: false, duration: speed }
				);
            }
            /*
            function hideSubtitle()
            {
            $('#'+ options.subtitleId).animate({bottom:-64});
            }
			
			function showSubtitle()
            {
            $('#'+ options.subtitleId).animate({bottom:-64});
            }
            */
            function setSubtitleText(text) {
                $('#' + options.subtitleId + ' p').eq(0).text(text);
            }

            function getAltByIndex(i) {
                var sliderId = options.sliderId;
                //alert(sliderId+ ' ' + i+': '+$($('img', '#'+sliderId+' li').eq(i)).attr('alt'));
                return $($('img', '#' + sliderId + ' li').eq(i)).attr('alt');
            }

            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 updateCount() {
                var current = t + 1;
                var total = ts + 1;
                if (current > total)
                    current -= total;
                else if (current < 1)
                    current += total;

                var formattedCount = current + options.countDivider + total;
                $("#" + options.sliderCountId).text(current + options.countDivider + total)
            };

            function animate(dir, clicked, clearTimer) {

                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 "none":
                            t = t;
                            break;
                        default:
                            t = dir;
                            break;
                    };
                    updateCount();
                    if (dir != "none")
                        hideSubtitle(getAltByIndex(t + 1), showSubtitle)

                    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 || clearTimer) 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);