/**
 * 
 */
Drupal.Gallery = new Object;

/**
 * 
 */
Drupal.Gallery.init = function() {
	Shadowbox.newOpen = Shadowbox.open;
	Shadowbox.open = function(o) {
		if (document.getElementById("sb-container").addEventListener) {
			document.getElementById("sb-container").addEventListener('DOMMouseScroll', Drupal.Gallery.wheel, false);
		}
		document.getElementById("sb-container").onmousewheel = Drupal.Gallery.wheel;

		this.newOpen(o);

		$("#sb-container").append('<a href="#" id="sb-controls-close" class="controls" onclick="Shadowbox.close();return false;"></a>');

		if (Shadowbox.gallery.length > 1) {
			var html = '<div id="sb-controls-list" class="controls"><ul class="items">';
			for (i = 0; i < Shadowbox.gallery.length ;i++) {

				if (Shadowbox.gallery[i]['content'] == $(o).attr("href")) {
					if (i < 1) {
						var first = true;
					} else {
						var first = false;
					}

					if ((i + 2) > Shadowbox.gallery.length) {
						var last = true;
					} else {
						var last = false;
					}

					var cl = 'active';

					if (!last && Shadowbox.gallery[i + 1]) {
						var next = Shadowbox.gallery[i + 1];
					}

					if (!first && Shadowbox.gallery[i - 1]) {
						var previous = Shadowbox.gallery[i - 1];
					}
				} else {
					var cl = '';
				}

				html += '<li class="' + cl + ' item" id="sb-controls-list-' + i + '"><a href="#" onclick="Shadowbox.change(' + i + ');return false;"></a></li>';
			}

			html += '</ul></div>';

			$("#sb-container").append(html);
			$("#sb-container").append('<a href="#" id="sb-controls-left" class="controls" onclick="Shadowbox.previous();return false;"></a><a href="#" id="sb-controls-right" class="controls" onclick="Shadowbox.next();return false;"></a>');

			// Next photo
			var nextHtml = '';
			if (next) {
				Drupal.Gallery.nextPhoto(next);
			}

			var previousHtml = '';
			if (previous) {
				Drupal.Gallery.previousPhoto(previous);
			}

			if (first) {
				$("#sb-controls-left").css("opacity", 0.2);
			}

			if (last) {
				$("#sb-controls-right").css("opacity", 0.2);
			}
		}
	};

	Shadowbox._change = Shadowbox.change;
	Shadowbox.change = function(index) {
		if (index == -1 || Shadowbox.gallery.length == index) {
			return
		}

		$("#sb-next-photo, #sb-previous-photo").remove();

		if (index < 1) {
			$("#sb-controls-left").fadeTo(200, 0.2).css("cursor", "default");
		} else {
			$("#sb-controls-left").fadeTo(200, 1).css("cursor", "pointer");

			if (Shadowbox.gallery.length == index) {
				Drupal.Gallery.previousPhoto(Shadowbox.gallery[index - 2]);
			} else {
				Drupal.Gallery.previousPhoto(Shadowbox.gallery[index - 1]);
			}
		}

		if ((index + 2) > Shadowbox.gallery.length) {
			$("#sb-controls-right").fadeTo(200, 0.2).css("cursor", "default");
		} else {
			$("#sb-controls-right").fadeTo(200, 1).css("cursor", "pointer");

			if (index != -1) {
				Drupal.Gallery.nextPhoto(Shadowbox.gallery[index + 1]);
			} else {
				Drupal.Gallery.nextPhoto(Shadowbox.gallery[index + 2]);
			}
		}

		if (index < Shadowbox.gallery.length && index != -1) {
			$("#sb-controls-list li").removeClass("active");
			$("#sb-controls-list-" + index).addClass("active");
		}

		return this._change(index);
	};

	Shadowbox._next = Shadowbox.next;
	Shadowbox.next = function() {
		Shadowbox._next();
	};

	Shadowbox._previous = Shadowbox.previous;
	Shadowbox.previous = function() {
		return Shadowbox._previous();
	};

	Shadowbox._close = Shadowbox.close;
	Shadowbox.close = function() {
		$(window).unbind(".gallery");

		$("#sb-container").fadeOut(500, function(){
			$("#sb-container").find(".controls").remove();
			Shadowbox._close();
		});
	};
};

/**
 * Next photo
 */
Drupal.Gallery.nextPhoto = function(object) {
	if (!object) return;

	$("#sb-container").append('<div class="sb-next-photo controls" id="sb-next-photo"><a href="' + object.content + '" onclick="Shadowbox.next();return false;"></a></div>');

	var image = new Image();

	$(image).load(function(){
		$("#sb-next-photo a img").remove();
		$("#sb-next-photo a").append(this);
		Drupal.Gallery.nextPhotoDimensions();
	}).error(function(){
		//
	}).attr("src", object.content);
};

/**
 * 
 */
Drupal.Gallery.nextPhotoDimensions = function() {
	height = $("#sb-next-photo img").innerHeight() / 2;
	width  = $("#sb-next-photo img").innerWidth() / 2;

	if (height > ($(window).height() / 2))
		height = $(window).height() / 2;

	$("#sb-next-photo img")
		.attr("height", height)
		.attr("width",  width);

	fromtop = ($(window).height() - $("#sb-container .sb-next-photo img").height()) / 2;
	$("#sb-next-photo").css("top", fromtop + 'px');
};

/**
 * Previous photo
 */
Drupal.Gallery.previousPhoto = function(object) {
	if (!object) return;

	$("#sb-container").append('<div class="controls sb-previous-photo" id="sb-previous-photo"><a href="' + object.content + '" onclick="Shadowbox.previous();return false;"></a></div>');

	var image = new Image();

	$(image).load(function(){
		$("#sb-previous-photo a img").remove();
		$("#sb-previous-photo a").append(this);
		Drupal.Gallery.previousPhotoDimensions();
	}).error(function(){
		//
	}).attr("src", object.content);
};

/**
 * 
 */
Drupal.Gallery.previousPhotoDimensions = function() {
	height = $("#sb-container #sb-previous-photo img").innerHeight() / 2;
	width  = $("#sb-container #sb-previous-photo img").innerWidth() / 2;

	if (height > ($(window).height() / 2))
	    height = $(window).height() / 2;

	$("#sb-container #sb-previous-photo img")
	    .attr("height", height)
	    .attr("width",  width);

	fromtop = ($(window).height() - $("#sb-container #sb-previous-photo img").height()) / 2;
	$("#sb-container #sb-previous-photo").css("top", fromtop + 'px');
};

/**
 * 
 */
Drupal.Gallery.wheel = function(event) {
	if (!event) {
		event = window.event;
	}

	if (event.wheelDelta) {
		wheelDelta = event.wheelDelta / 120;
	} else if (event.detail) {
		wheelDelta = - event.detail / 3;
	}

	if (wheelDelta == -1) {
		Shadowbox.next();
	} else {
		Shadowbox.previous();
	}

	if (event.preventDefault) {
		event.preventDefault();
	}

	event.returnValue = false;
};

/**
 * 
 */
Drupal.behaviors.Gallery = Drupal.Gallery.init;



/*
playback timings (ms):
  LoadShardBlock: 1160.382 (3)
  esindex: 0.011
  captures_list: 1176.078
  CDXLines.iter: 11.395 (3)
  PetaboxLoader3.datanode: 583.129 (4)
  exclusion.robots: 0.416
  exclusion.robots.policy: 0.399
  RedisCDXSource: 0.682
  PetaboxLoader3.resolve: 655.249 (3)
  load_resource: 106.058
*/