/*!
 * slideViewerPro 1.0
 * Examples and documentation at: 
 * http://www.gcmingati.net/wordpress/wp-content/lab/jquery/svwt/
 * 2009-2010 Gian Carlo Mingati
 * Version: 1.0.5 (26-JULY-2009)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 * Requires:
 * jQuery v1.3.2 or later
 * Option:
 * jQuery Timers plugin | plugins.jquery.com/project/timers (for autoslide mode)
 * 
 */
jQuery.extend( jQuery.easing, // from the jquery.easing plugin
{
    easeInOutExpo: function (x, t, b, c, d) {
        if (t==0) return b;
        if (t==d) return b+c;
        if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
        return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
    }
});
jQuery(function(){
    jQuery("div.svwp").prepend("<img src='assets/images/svwloader.gif' class='ldrgif' alt='loading...'/ >"); //change with YOUR loader image path
});
var j = 0;
jQuery.fn.slideViewerPro = function(settings) {
    settings = jQuery.extend({
        galBorderWidth: 6,
        thumbsTopMargin: 3,
        thumbsRightMargin: 3,
        thumbsBorderWidth: 3,
        buttonsWidth: 20,
        galBorderColor: "#ff0000",
        thumbsBorderColor: "#d8d8d8",
        thumbsActiveBorderColor: "#ff0000",
        buttonsTextColor: "#ff0000",
        thumbsBorderOpacity: 1.0, // could be 0, 0.1 up to 1.0
        thumbsActiveBorderOpacity: 1.0, // could be 0, 0.1 up to 1.0
        easeTime: 750,
        asTimer: 4000,
        thumbs: 5,
        thumbsPercentReduction: 12,
        thumbsVis: true,
        easeFunc: "easeInOutExpo",
        leftButtonInner: "-", //could be an image "<img src='images/larw.gif' />" or an escaped char as "&larr";
        rightButtonInner: "+", //could be an image or an escaped char as "&rarr";
        autoslide: false,
        typo: false,
        typoFullOpacity: 0.9,
        shuffle: false
    }, settings);
		
    return this.each(function(){
        function shuffle(a) {
            var i = a.size();
            while (--i) {
                var j = Math.floor(Math.random() * (i));
                var tmp = a.slice(i, i+1);
                a.slice(j, j+1).insertAfter(tmp);
            }
        }
        var container = jQuery(this);
        (!settings.shuffle) ? null : shuffle(container.find("li"));
        container.find("img.ldrgif").remove();
        container.removeClass("svwp").addClass("slideViewer");
        container.attr("id", "svwp"+j);
        var pictWidth = container.find("img").attr("width");
        var pictHeight = container.find("img").attr("height");
        var pictEls = container.find("li").size();
        (pictEls >= settings.thumbs) ? null : settings.thumbs = pictEls;
        var slideViewerWidth = pictWidth*pictEls;
        var thumbsWidth = Math.round(pictWidth*settings.thumbsPercentReduction/100);
        var thumbsHeight =  Math.round(pictHeight*settings.thumbsPercentReduction/100);
        var pos = 0;
        var r_enabled = true;
        var l_enabled = true;
        container.find("ul").css("width" , slideViewerWidth)
        .wrap(jQuery("<div style='width:"+ pictWidth +"px; overflow: hidden; position: relative; top: 0; left: 0'>"));
        container.css("width" , pictWidth);
        container.css("height" , pictHeight);
        container.each(function(i) {
            if(settings.typo)
            {
                jQuery(this).find("img").each(function(z) {
                    jQuery(this).after("<span class='typo' style='position: absolute; width:"+(pictWidth-12)+"px; margin: 0 0 0 -"+pictWidth+"px'>"+jQuery(this).attr("alt")+"<\/span>");
                });
            }
            jQuery(this).after("<div class='thumbSlider' id='thumbSlider" + j + "'><ul><\/ul><\/div>");
            jQuery(this).next().after("<a href='#' class='left' id='left" + j + "'><span>"+settings.leftButtonInner+"</span><\/a><a href='#' class='right' id='right" + j + "'><span>"+settings.rightButtonInner+"<\/span><\/a>");
			
            jQuery(this).find("li").each(function(n) {
                jQuery("div#thumbSlider" + j + " ul").append("<li><a title='" + jQuery(this).find("img").attr("alt") + "' href='#'><img width='"+ thumbsWidth +"' height='"+ thumbsHeight +"' src='" + jQuery(this).find("img").attr("src") + "' /><p class='tmbrdr'>&nbsp;<\/p><\/a><\/li>");
            });
    
            jQuery("div#thumbSlider" + j + " a").each(function(z) {
                jQuery(this).bind("click", function(){
                    jQuery(this).find("p.tmbrdr").css({
                        borderColor: settings.thumbsActiveBorderColor,
                        opacity: settings.thumbsActiveBorderOpacity
                        });
                    jQuery(this).parent().parent().find("p.tmbrdr").not(jQuery(this).find("p.tmbrdr")).css({
                        borderColor: settings.thumbsBorderColor,
                        opacity: settings.thumbsBorderOpacity
                        });
                    var cnt = -(pictWidth*z);
                    (cnt != container.find("ul").css("left").replace(/px/, "")) ? container.find("span.typo").animate({
                        "opacity": 0
                    }, 250) : null ;
                    container.find("ul").animate({
                        left: cnt
                    }, settings.easeTime, settings.easeFunc, function(){
                        container.find("span.typo").animate({
                            "opacity": settings.typoFullOpacity
                            }, 250)
                        });
                    return false;
                });
            });
            // shortcuts to +/- buttons
            var jQuerybtl = jQuery("a#left" + j);
            var jQuerybtr = jQuery("a#right" + j);
			
            // right/left
            jQuerybtr.bind("click", function(){
                if (r_enabled) (pictEls-pos > settings.thumbs*2 || pictEls%settings.thumbs == 0)? pos += settings.thumbs : pos += pictEls % settings.thumbs;
                r_enabled = false;
                jQuery(this).prev().prev().find("ul:not(:animated)").animate({
                    left: -(thumbsWidth+settings.thumbsRightMargin)*pos
                    }, 500, settings.easeFunc, function(){
                    authorityMixing();
                });
                return false;
            });
            jQuerybtl.bind("click", function(){
                if (l_enabled && pos!=0) (pictEls-pos > settings.thumbs || pictEls%settings.thumbs == 0)? pos -= settings.thumbs : pos -= pictEls % settings.thumbs;
                l_enabled = false;
                jQuery(this).prev().find("ul:not(:animated)").animate({
                    left: -(thumbsWidth+settings.thumbsRightMargin)*pos
                    }, 500, settings.easeFunc, function(){
                    authorityMixing();
                });
                return false;
            });
			
            function authorityMixing()
            {
				
                //right btt
                (pos == pictEls-settings.thumbs) ? jQuerybtr.addClass("r_dis") : jQuerybtr.removeClass("r_dis");
                (pos == pictEls-settings.thumbs) ? r_enabled = false : r_enabled = true;
                //left btt
                (pos == 0) ? jQuerybtl.addClass("l_dis") : jQuerybtl.removeClass("l_dis");
                (pos == 0) ? l_enabled = false : l_enabled = true;
            }
			
            //CSS	defs @ runtime
            var tBorder = settings.thumbsBorderWidth;
            var contBorder = settings.galBorderWidth
			
            jQuery(".slideViewer a img").css({
                border: "0"
            });
            if(settings.typo)
            {
                jQuery(this).find("span.typo").each(function(z) {
                    jQuery(this).css({
                        marginTop: (pictHeight-jQuery(this).innerHeight()),
                        opacity: settings.typoFullOpacity
                        });
                });
            }
            jQuery("div#svwp"+ j).css({
                border: settings.galBorderWidth +"px solid "+settings.galBorderColor
                });
			
            jQuery("div#thumbSlider" + j).css({
                position: "relative",
                left: contBorder,
                top: settings.thumbsTopMargin+"px",
                width: settings.thumbs*thumbsWidth+((settings.thumbsRightMargin*settings.thumbs)-settings.thumbsRightMargin),
                height: thumbsHeight,
                textAlign: "center",
                overflow: "hidden",
                margin: "0 auto"
            });
            jQuery("div#thumbSlider" + j + " ul").css({
                width: (thumbsWidth*pictEls)+settings.thumbsRightMargin*pictEls,
                position: "relative",
                left: "0",
                top: "0"
            });
            jQuery("div#thumbSlider" + j + " ul li").css({
                marginRight: settings.thumbsRightMargin
                });
					
            jQuery("div#thumbSlider" + j).find("p.tmbrdr").css({
                width: (thumbsWidth-tBorder*2)+"px",
                height: (thumbsHeight-tBorder*2) +"px",
                top: -(thumbsHeight) +"px",
                border: settings.thumbsBorderWidth +"px solid "+settings.thumbsBorderColor,
                opacity: settings.thumbsBorderOpacity
                });
            jQuery("div#thumbSlider" + j + " a:first p.tmbrdr").css({
                borderColor: settings.thumbsActiveBorderColor,
                opacity: settings.thumbsActiveBorderOpacity
                });
			
            var rbttLeftMargin = (pictWidth/2) + (jQuery("div#thumbSlider" + j).width()/2) + settings.thumbsRightMargin + contBorder;
            var lbttLeftMargin = (pictWidth/2) - (jQuery("div#thumbSlider" + j).width()/2) - (settings.buttonsWidth + settings.thumbsRightMargin) + contBorder;

			
            var innerLeftImg = jQuerybtl.find("img");
            var innerRightImg = jQuerybtr.find("img");
            if(innerLeftImg.length != 0 && innerRightImg.length != 0)
            {
                jQuery(innerLeftImg).load(function() {
                    jQuery(this).css({
                        margin: Math.round((thumbsHeight/2)-(jQuery(this).height()/2))+"px 0 0 0"
                        });
                });
                jQuery(innerRightImg).load(function() {
                    jQuery(this).css({
                        margin: Math.round((thumbsHeight/2)-(jQuery(this).height()/2))+"px 0 0 0"
                        });
                });
            }

			
            jQuery("a#left" + j).css({
                display: "block",
                textAlign: "center",
                width: settings.buttonsWidth + "px" ,
                height: thumbsHeight+"px",
                margin: -(thumbsHeight-settings.thumbsTopMargin) +"px 0 0 "+lbttLeftMargin+"px",
                textDecoration: "none",
                lineHeight: thumbsHeight+"px",
                color: settings.buttonsTextColor
                });
            jQuery("a#right" + j).css({
                display: "block",
                textAlign: "center",
                width: settings.buttonsWidth + "px",
                height: thumbsHeight+"px" ,
                margin: -(thumbsHeight) +"px 0 0 "+rbttLeftMargin+"px",
                textDecoration: "none",
                lineHeight: thumbsHeight+"px",
                color: settings.buttonsTextColor
                });


            authorityMixing();
	
            if(settings.autoslide){
                var i = 1;					
                jQuery("div#thumbSlider" + j).everyTime(settings.asTimer, "asld", function() {
                    jQuery(this).find("a").eq(i).trigger("click");
                    if(i == 0)
                    {
                        pos = 0;
                        l_enabled = false;
                        jQuery("div#thumbSlider" + j).find("ul:not(:animated)").animate({
                            left: -(thumbsWidth+settings.thumbsRightMargin)*pos
                            }, 500, settings.easeFunc, function(){
                            authorityMixing();
                        });
                    }
                    else l_enabled = true;
		  			
                    (i%settings.thumbs == 0)? jQuery(this).next().next().trigger("click") : null;
                    (i < pictEls-1)?	i++ : i=0;
                });
					
                //stops autoslidemode
                jQuery("a#right" + j).bind("mouseup", function(){
                    jQuery(this).prev().prev().stopTime("asld");
                });
                jQuery("a#left" + j).bind("mouseup", function(){
                    jQuery(this).prev().stopTime("asld");
                });
                jQuery("div#thumbSlider" + j + " a").bind("mouseup", function(){
                    jQuery(this).parent().parent().parent().stopTime("asld");
                });
            }
            var uiDisplay = (settings.thumbsVis)? "block":"none";
            jQuery("div#thumbSlider" + j + ", a#left" + j + ", a#right" + j).wrapAll("<div style='width:"+ pictWidth +"px; display: "+uiDisplay+"' id='ui"+j+"'><\/div>");
            jQuery("div#svwp"+ j + ", div#ui" + j).wrapAll("<div style='width:"+ pictWidth +"px'><\/div>");
        });
        (jQuery("div#thumbSlider" + j).width()+(settings.buttonsWidth*2) >= pictWidth)? alert("ALERT: THE THUMBNAILS SLIDER IS TOO WIDE! \nthumbsPercentReduction and/or buttonsWidth needs to be scaled down!") : null;
        j++;
    });
};