/**
 *
 * Spacegallery
 * Author: Stefan Petre www.eyecon.ro
 * 
 */

(function ($) {
    EYE.extend({

        spacegallery: {

            //default options (many options are controled via CSS)
            defaults: {
                border: 6, // border arround the image
                perspective: 100, // perpective height
                minScale: 0.2, // minimum scale for the image in the back
                duration: 800, // aimation duration
                loadingClass: null, // CSS class applied to the element while looading images
                before: function () { return false },
                after: function () { return false }
            },

            animated: false,

            //position images
            positionImages: function (el) {
                var top = 0;
                EYE.spacegallery.animated = false;
                $(el)
					.find('a')
						.removeClass(el.spacegalleryCfg.loadingClass)
						.end()
					.find('img')
						.removeAttr('height')
						.each(function (nr) {
						    var newWidth = this.spacegallery.origWidth - (this.spacegallery.origWidth - this.spacegallery.origWidth * el.spacegalleryCfg.minScale) * el.spacegalleryCfg.asins[nr];
						    $(this)
								.css({
								    top: el.spacegalleryCfg.tops[nr] + 'px',
								    marginLeft: -parseInt((newWidth + el.spacegalleryCfg.border) / 2, 10) + 'px',
								    opacity: 1 - el.spacegalleryCfg.asins[nr]
								})
								.attr('width', parseInt(newWidth));
						    this.spacegallery.next = el.spacegalleryCfg.asins[nr + 1];
						    this.spacegallery.nextTop = el.spacegalleryCfg.tops[nr + 1] - el.spacegalleryCfg.tops[nr];
						    this.spacegallery.origTop = el.spacegalleryCfg.tops[nr];
						    this.spacegallery.opacity = 1 - el.spacegalleryCfg.asins[nr];
						    this.spacegallery.increment = el.spacegalleryCfg.asins[nr] - this.spacegallery.next;
						    this.spacegallery.current = el.spacegalleryCfg.asins[nr];
						    this.spacegallery.width = newWidth;
						})
            },

            //animate to nex image
            next: function (e) {
                var imgalt = "";
                var imgcount = 1;

                if (EYE.spacegallery.animated === false) {

                    // CDC
                    // remove the link prior to beginning the animation
                    var link = document.getElementById("front_feature_link");
                    if (link != null) {
                        document.body.removeChild(link);
                    }
                    // [end] CDC

                    EYE.spacegallery.animated = true;
                    var el = this.parentNode;
                    el.spacegalleryCfg.before.apply(el);
                    $(el)
						.css('spacegallery', 0)
						.animate({
						    spacegallery: 100
						}, {
						    easing: 'easeOut',
						    duration: el.spacegalleryCfg.duration,
						    complete: function () {
						        $(el)
									.find('img:last')
									.prependTo(el);
						        EYE.spacegallery.positionImages(el);
						        el.spacegalleryCfg.after.apply(el);

						        // CDC
						        if (imgalt != "") {
						            var div = document.createElement("div");
						            div.setAttribute('id', "front_feature_link");
						            div.style.position = "absolute";
						            div.style.top = $('#carousel').position().top + 165 + "px";
						            if ($('#carousel').position().left > 95) {
						                div.style.left = $(window).width() / 2 - 220 + "px";
						            }
						            else {
						                div.style.left = "355px";
						            }
						            div.style.zIndex = 8010;
						            div.innerHTML = "<a href='/Products/" + imgalt + "'>Tell Me More &#187;</a>";
						            document.body.appendChild(div);
						        }
						        // [end] CDC
						    },
						    step: function (now) {
						        $('img', this)
									.each(function (nr) {
									    var newWidth, top, next;
									    if (nr + 1 == el.spacegalleryCfg.images) {
									        top = this.spacegallery.origTop + this.spacegallery.nextTop * 4 * now / 100;
									        newWidth = this.spacegallery.width * top / this.spacegallery.origTop;
									        $(this)
												.css({
												    top: top + 'px',
												    opacity: 0.7 - now / 100,
												    marginLeft: -parseInt((newWidth + el.spacegalleryCfg.border) / 2, 10) + 'px'
												})
												.attr('width', newWidth);
									        // CDC
									        // the count goes from the back, so the next one in line from the front is the count we want
									        if (imgcount == 7) { imgalt = $(this).attr("alt"); }
									    } else {
									        next = this.spacegallery.current - this.spacegallery.increment * now / 100;
									        newWidth = this.spacegallery.origWidth - (this.spacegallery.origWidth - this.spacegallery.origWidth * el.spacegalleryCfg.minScale) * next;
									        $(this).css({
									            top: this.spacegallery.origTop + this.spacegallery.nextTop * now / 100 + 'px',
									            opacity: 1 - next,
									            marginLeft: -parseInt((newWidth + el.spacegalleryCfg.border) / 2, 10) + 'px'
									        })
											.attr('width', newWidth);
									        // CDC
									        // the count goes from the back, so the next one in line from the front is the count we want
									        if (imgcount == 7) { imgalt = $(this).attr("alt"); }
									    }
									    imgcount++;
									});
						    }
						});
                }

                this.blur();
                return false;
            },

            //constructor
            init: function (opt) {
                var imgalt = "";
                var imgcount = 1;
                opt = $.extend({}, EYE.spacegallery.defaults, opt || {});
                return this.each(function () {
                    var el = this;
                    if ($(el).is('.spacegallery')) {
                        $('<a href="#"></a>')
							.appendTo(this)
							.addClass(opt.loadingClass)
							.bind('click', EYE.spacegallery.next);
                        el.spacegalleryCfg = opt;
                        el.spacegalleryCfg.images = el.getElementsByTagName('img').length;
                        el.spacegalleryCfg.loaded = 0;
                        el.spacegalleryCfg.asin = Math.asin(1);
                        el.spacegalleryCfg.asins = {};
                        el.spacegalleryCfg.tops = {};
                        el.spacegalleryCfg.increment = parseInt(el.spacegalleryCfg.perspective / el.spacegalleryCfg.images, 10);
                        var top = 0;
                        $('img', el)
							.each(function (nr) {
							    var imgEl = new Image();
							    var elImg = this;
							    el.spacegalleryCfg.asins[nr] = 1 - Math.asin((nr + 1) / el.spacegalleryCfg.images) / el.spacegalleryCfg.asin;
							    top += el.spacegalleryCfg.increment - el.spacegalleryCfg.increment * el.spacegalleryCfg.asins[nr];
							    el.spacegalleryCfg.tops[nr] = top;
							    elImg.spacegallery = {};
							    imgEl.src = this.src;
							    if (imgEl.complete) {
							        el.spacegalleryCfg.loaded++;
							        elImg.spacegallery.origWidth = imgEl.width;
							        elImg.spacegallery.origHeight = imgEl.height
							    } else {
							        imgEl.onload = function () {
							            el.spacegalleryCfg.loaded++;
							            elImg.spacegallery.origWidth = imgEl.width;
							            elImg.spacegallery.origHeight = imgEl.height
							            if (el.spacegalleryCfg.loaded == el.spacegalleryCfg.images) {

							                EYE.spacegallery.positionImages(el);
							            }
							        };
							    }
							    if (imgcount == 8) {
							        imgalt = $(this).attr("alt");
							        // CDC
							        if (imgalt != "") {
							            var div = document.createElement("div");
							            div.setAttribute('id', "front_feature_link");
							            div.style.position = "absolute";
							            div.style.top = $('#carousel').position().top + 165 + "px";
							            if ($('#carousel').position().left > 95) {
							                div.style.left = $(window).width() / 2 - 220 + "px";
							            }
							            else {
							                div.style.left = "355px";
							            }
							            div.style.zIndex = 8010;
							            div.innerHTML = "<a href='/Products/" + imgalt + "'>Tell Me More &#187;</a>";
							            document.body.appendChild(div);
							        }
							        // [end] CDC
							    }
							    imgcount++;
							});
                        el.spacegalleryCfg.asins[el.spacegalleryCfg.images] = el.spacegalleryCfg.asins[el.spacegalleryCfg.images - 1] * 1.3;
                        el.spacegalleryCfg.tops[el.spacegalleryCfg.images] = el.spacegalleryCfg.tops[el.spacegalleryCfg.images - 1] * 1.3;
                        if (el.spacegalleryCfg.loaded == el.spacegalleryCfg.images) {
                            EYE.spacegallery.positionImages(el);
                        }
                    }
                });
            }
        }
    });

    $.fn.extend({

        /**
        * Create a space gallery
        * @name spacegallery
        * @description create a space gallery
        * @option	int			border			Images' border. Default: 6
        * @option	int			perspective		Perpective height. Default: 140
        * @option	float		minScale		Minimum scale for the image in the back. Default: 0.2
        * @option	int			duration		Animation duration. Default: 800
        * @option	string		loadingClass	CSS class applied to the element while looading images. Default: null
        * @option	function	before			Callback function triggered before going to the next image
        * @option	function	after			Callback function triggered after going to the next image
        */
        spacegallery: EYE.spacegallery.init
    });
    $.extend($.easing, {
        easeOut: function (x, t, b, c, d) {
            return -c * (t /= d) * (t - 2) + b;
        }
    });
})(jQuery);