// -----------------------------------------------------------------------
// jquery.showcase 1.0.0 - Primal Media Limited 2010
//
// requires jQuery 1.3.x
//------------------------------------------------------------------------
(function($) {
    $.fn.showcase = function (options) {
        var $container = this;
        // Retrieve options
        var opt;
        opt = $.extend({}, $.fn.showcase.defaults, options);

        if (!/images|titles/.test(opt.linksOn)) 
        {
            opt.linksOn = "images";
        }
        if (options && options.css) {  
            opt.css = $.extend({}, $.fn.showcase.defaults.css, options.css); 
        }
        if (options && options.animation) {  
            opt.animation = $.extend({}, $.fn.showcase.defaults.animation, options.animation); 
            if (!/horizontal-slider|vertical-slider|fade/.test(opt.animation.type)) 
            {
                opt.animation.type = "horizontal-slider";
            }
        }
        if (options && options.navigator) { 
            opt.navigator = $.extend({}, $.fn.showcase.defaults.navigator, options.navigator); 
            
            if (!/top-left|top-right|bottom-left|bottom-right/.test(opt.navigator.position)) 
            {
                opt.navigator.position = "top-right";
            }
            
            if (!/horizontal|vertical/.test(opt.navigator.orientation)) 
            { 
                opt.navigator.orientation = "horizontal";
            }
            
            if (options.navigator.css)
            {
                opt.navigator.css = $.extend({}, $.fn.showcase.defaults.navigator.css, options.navigator.css);
            }
            
            if (options.navigator.item) { 
                opt.navigator.item = $.extend({}, $.fn.showcase.defaults.navigator.item, options.navigator.item);
                // Progressive extensions of hover and selected states, inherited by standard css properties
                opt.navigator.item.cssHover = $.extend({}, $.fn.showcase.defaults.navigator.item.css, $.fn.showcase.defaults.navigator.item.cssHover);
                opt.navigator.item.cssSelected = $.extend({}, $.fn.showcase.defaults.navigator.item.css, $.fn.showcase.defaults.navigator.item.cssSelected);
                
                if (options.navigator.item.css) { 
                    opt.navigator.item.css = $.extend({}, $.fn.showcase.defaults.navigator.item.css, options.navigator.item.css);
                    opt.navigator.item.cssHover = $.extend({}, $.fn.showcase.defaults.navigator.item.cssHover, options.navigator.item.css);
                    opt.navigator.item.cssSelected = $.extend({}, $.fn.showcase.defaults.navigator.item.cssSelected, options.navigator.item.css); 
                }  
                if (options.navigator.item.cssHover) { opt.navigator.item.cssHover = $.extend({}, $.fn.showcase.defaults.navigator.item.cssHover, options.navigator.item.cssHover); }
                if (options.navigator.item.cssSelected) { opt.navigator.item.cssSelected = $.extend({}, $.fn.showcase.defaults.navigator.item.cssSelected, options.navigator.item.cssSelected); }
            }
        }
        
        if (options && options.titleBar) { 
            opt.titleBar = $.extend({}, $.fn.showcase.defaults.titleBar, options.titleBar); 
            if (!/bottom|top/.test(opt.titleBar.position)) 
            {
                opt.titleBar.position = "bottom";
            }
            
            if (options.titleBar.css) { opt.titleBar.css = $.extend({}, $.fn.showcase.defaults.titleBar.css, options.titleBar.css);  }
        }
        
        // Check loading mode.
        // If there's something in opt.images[], I'll load them asynchronously, 
        // it will be nice to have width and height setted, in order to define the $container sizes
        if (opt.images.length != 0) {
            $container.css({ width: opt.css.width, height: opt.css.height, overflow: "hidden" });
            for (var i in opt.images) {
                var img = new Image();
                img.src = opt.images[i].url;
                img.alt = opt.images[i].description || "";
                var $link = $("<a />").attr({ "href": opt.images[i].link || "#", "target": opt.images[i].target || "_self" });
                $link.append(img);
                $container.append($link);
            }
        }
        
        // Check loading state of #1 image
        if ($container.find("img:first")[0].complete) {
            $.fn.showcase.start($container, opt);
        }
        else {
            $container.find("img:first").load( function() {
                $.fn.showcase.start($container, opt);
            });
        }
        
        // functions to control the palyback of showcase
        $.fn.extend({
            pause: function() { $container.data("stopped", true); },
            go: function() { $container.data("stopped", false); }
        }) 
    }

    // This will start all showcase's stuffs
    $.fn.showcase.start = function($container, opt) {
        // Define local vars
        var index = 0;                             
        var nImages = $container.find("img").length;
        var $fi = $container.find("img:first");
        var imagesize = { width: $fi.removeAttr("width").width(), height: $fi.removeAttr("height").height() };
        
        opt.css.width = imagesize.width;
        opt.css.height = imagesize.height;
        
        // setup container
        $container.css(opt.css)
            .find("a").css({ position: "absolute", top: "0", left: "0" })
                .find("img").css("border", "0px");
    
        // setup navigator
        var $slider = $("<div id='slider' />").css({ position:"absolute" });
        var $divNavigator = $("<div id='navigator' />").css(opt.navigator.css);

        switch (opt.navigator.position)
        {
            case "top-left": $divNavigator.css({ top: "0px", left: "0px" });
                break;
            case "top-right": $divNavigator.css({ top: "0px", right: "0px" });
                break;
            case "bottom-left": $divNavigator.css({ bottom: "0px", left: "0px" });
                break;
            case "bottom-right": $divNavigator.css({ bottom: "0px", right: "0px" });
                break;
        }
        
        $container.find("a").wrapAll($slider).each( function(i) {
            switch (opt.animation.type)
            { 
                case "horizontal-slider":
                    $(this).css("left", i*imagesize.width);
                    break;
                case "vertical-slider":
                    $(this).css("top", i*imagesize.height);
                    break;
                case "fade":
                    $(this).css({ top: "0", left: "0", opacity:1, "z-index": 1000-i });
                    break;
            }
            
            // Create navigation bar item
            var $navElement = $("<a href='#'>" + (opt.navigator.showNumber ? (i + 1) : "") + "</a>")
                                .css({  display: "block",
                                        "text-decoration": "none",
                                        "-moz-outline-style": "none" })
                                .click( function() {
                                    if (opt.animation.autoCycle) { clearInterval(opt.animation.intervalID); } // stop the current automatic animation
                                    $.fn.showcase.showImage(i, $container, imagesize, opt);
                                    index = i;
                                    if (opt.animation.autoCycle) { opt.animation.intervalID = showcaseCycler(index, nImages, $container, imagesize, opt); } // restart the automatic animation
                                    return false;
                                })
                                .hover( 
                                    function() { if (!$(this).data("selected")) {
                                                    if (opt.navigator.item.cssClassHover)
                                                    { $(this).addClass(opt.navigator.item.cssClassHover); }
                                                    else 
                                                    { $(this).css(opt.navigator.item.cssHover); }
                                                }
                                    },
                                    function() { if (!$(this).data("selected")) {
                                                    if (opt.navigator.item.cssClassHover) 
                                                    { $(this).removeClass(opt.navigator.item.cssClassHover); }
                                                    else 
                                                    { $(this).css(opt.navigator.item.css); }
                                                }
                                    }
                                )
                                .appendTo($divNavigator);

            if (opt.navigator.item.cssClass) { $navElement.attr("class", opt.navigator.item.cssClass); }
            else {
                $.extend({}, $navElement.css, opt.navigator.item);
                $navElement.css(opt.navigator.item.css);
            }
            
            switch (opt.navigator.orientation) 
                {
                    case "horizontal":
                        $navElement.css("float", "left");
                        break;
                    case "vertical":
                        $navElement.css("float", "none");
                        break;    
                }
            
            if (opt.navigator.showMiniature) {
                $("<img />").attr({ src: $(this).find("img").attr("src"), width: $navElement.css("width").replace("px", ""), height: $navElement.css("height").replace("px", ""), border: "0px" }).appendTo($navElement);
            }
        });
        
        if (opt.navigator.autoHide) {
            $divNavigator.css("opacity", 0);
        }
        
        $container.append($divNavigator).hover(
            function() { 
                if (opt.titleBar.autoHide && opt.titleBar.enabled) {
                    $($titleBar).stop().animate({ opacity: opt.titleBar.css.opacity, left: 0, right: 0, height: opt.titleBar.css.height }, 250);
                }
                if (opt.navigator.autoHide) { $($divNavigator).stop().animate({ opacity: 1 }, 250); }
                $(this).data("isMouseHover", true);
            },
            function() { 
                if (opt.titleBar.autoHide && opt.titleBar.enabled) {
                    $titleBar.stop().animate({ opacity: 0, height: "0px" }, 400); 
                }
                if (opt.navigator.autoHide) { $divNavigator.stop().animate({ opacity: 0 }, 250); }
                $(this).data("isMouseHover", false);
            }
        );
        
        // Create titleBar
        if (opt.titleBar.enabled) {
            if (opt.linksOn == "images")
            {
                var $titleBar = $("<div id='subBar' />").html( $("<span />").html($container.find("a:first img").attr("alt")) );
            }
            else 
            {
                var $a = $("<a />").attr("href", $container.find("a:first").attr("href")).html("<span>" + $container.find("a:first img").attr("alt") + "</span>");
                var $titleBar = $("<div id='subBar' />").html($a)

                $container.find("#slider a").each( function() {
                    $(this).attr("rel", $(this).attr("href"));
                });
                $container.find("#slider a").removeAttr("href");
            }
            
            $titleBar.css({
                opacity: 0.50,
                width: "100%",
                overflow: "hidden",
                "z-index": 10002,
                position: "absolute"
            });
            
            if(opt.titleBar.position == "top") { $titleBar.css("top", "0"); }
            else { $titleBar.css("bottom", "0"); }
            
            if (opt.titleBar.cssClass) { $titleBar.attr("class", opt.titleBar.cssClass); }
            else { 
                $titleBar.css(opt.titleBar.css); 
                $("a", $titleBar).css("color", opt.titleBar.css.color);
            }
            
            if (opt.titleBar.autoHide) { $titleBar.css({
                "height": "0px",
                "opacity": 0
            }); }
            $titleBar.appendTo($container);
        }
            
        // set first image as selected
        $.fn.showcase.setNavigationItem(0, $container, opt);
        
        // startup cycling
        if (opt.animation.autoCycle) {
            opt.animation.intervalID = showcaseCycler(index, nImages, $container, imagesize, opt);
        }
    }
    
    var showcaseCycler = function(index, nImages, $container, imagesize, opt) {
        return setInterval( function() { 
                if (!$container.data("stopped")){
                    if (!$container.data("isMouseHover") || !opt.animation.stopOnHover) 
                        $.fn.showcase.showImage(++index % nImages, $container, imagesize, opt); 
                }
            }, opt.animation.interval);
    };
    
    $.fn.showcase.showImage = function(i, $container, imagesize, opt) {
        var $a = $container.find("a");
        var $a_this = $container.find("a").eq(i);

        switch (opt.animation.type)
        { 
            case "horizontal-slider": $container.find("#slider").stop().animate({ left: - (i*imagesize.width) }, opt.animation.speed, opt.animation.easefunction);
                break;
            case "vertical-slider": $container.find("#slider").stop().animate({ top: - (i*imagesize.height) }, opt.animation.speed, opt.animation.easefunction);
                break;
            case "fade":
                $container.css({ "z-index": "1001" });
                if ($a_this.css("z-index") != "1000") 
                {
                    $a_this.css({ "z-index": "1000", opacity: 0 });
                    
                    $a.not($a_this).each( function() {
                        if ($(this).css("z-index") != "auto")
                            $(this).css("z-index", parseInt($(this).css("z-index"), 10) - 1);
                    });
                    
                    $a_this.stop().animate({ opacity: 1 }, opt.animation.speed, opt.animation.easefunction);
                }
                break;
        }

        if (opt.titleBar.enabled) {
            if (opt.linksOn == "titles") {
                $("#subBar a", $container).attr({
                    "href": $a_this.attr("rel"), "target": $a_this.attr("target")
                });
            }
        }
        $("#subBar span", $container).html($a_this.find("img").attr("alt"));
        // Setting selected navigationItem
        $.fn.showcase.setNavigationItem(i, $container, opt);
    };
    
    // Highlight the navigationItem related to image
    $.fn.showcase.setNavigationItem = function(i, $container, opt) {
        if (opt.navigator.item.cssClassSelected) {
            $container.find("#navigator a").removeClass(opt.navigator.item.cssClassSelected).data("selected", false);
            $container.find("#navigator a").eq(i).addClass(opt.navigator.item.cssClassSelected).data("selected", true);
        }
        else {
            if (opt.navigator.item.cssClass) {
                //$container.find("#navigator a").removeAttr("style").data("selected", false);
                $container.find("#navigator a").eq(i).css(opt.navigator.item.cssSelected).data("selected", true);
            }
            else {
                $container.find("#navigator a").css(opt.navigator.item.css).data("selected", false);
                $container.find("#navigator a").eq(i).css(opt.navigator.item.cssSelected).data("selected", true);   
            }
        }
    };
    
    $.fn.showcase.defaults = {
        images: [],
        linksOn: "images",
        css: {  position: "relative", 
                overflow: "hidden",
                border: "none",
                width: "",
                height: ""
        },
        animation: { autoCycle: true,
                     stopOnHover: true,
                     interval: 4000,
                     speed: 500,
                     easefunction: "swing",
                     type: "horizontal-slider" },
        
        navigator: { css: { border: "none",
                            padding: "5px",
                            margin: "0px",
                            position: "absolute", 
                            "z-index": 1000
                    },
                    position: "top-right",
                    orientation: "horizontal",
                    autoHide: false,
                    showNumber: false,
                    showMiniature: false,
                    item: { cssClass: null,
                            cssClassHover: null,
                            cssClassSelected: null,
                            css: {  
                                color: "#000000",
                                "text-decoration": "none",
                                "text-align": "center",
                                "-moz-outline-style": "none",
                                width: "12px", 
                                height: "12px",
                                lineHeight: "12px",
                                verticalAlign: "middle",
                                backgroundColor: "#878787",
                                margin: "0px 3px 3px 0px",
                                border: "solid 1px #acacac",
                                "-moz-border-radius": "4px",
                                "-webkit-border-radius": "4px" },
                            cssHover: {
                                backgroundColor: "#767676",
                                border: "solid 1px #676767" },
                            cssSelected: {  
                                backgroundColor: "#00FF00",
                                border: "solid 1px #acacac" }
                            }
                     },
        titleBar: { enabled: true,
                    autoHide: true,
                    position: "bottom",
                    cssClass: null,
                    css: {  opacity: 0.50,
                            color: "#ffffff",
                            backgroundColor: "#000000",
                            height: "40px",
                            padding: "4px",
                            fontColor: "#444444",
                            fontStyle: "italic",
                            fontWeight: "bold",
                            fontSize: "1em" } }
    };
    
})(jQuery);