/**
 * Storebox 1.0 - jQuery plugin for displaying content in a box above the page
 * 
 */

function SH_click(obj){
	obj.blur();
	// get caption: either title or name attribute
	var caption = obj.title || obj.name || "";

	// display the box for the elements href
	SH_show(caption, obj.value, false);

	return false;
}

// called when the user clicks on a storebox link
function SH_show(caption, url, rel) {

	// create iframe, overlay and box if non-existent
	if ( !$("#SB_HideSelect").length ) {
		$("body").append("<iframe id='SB_HideSelect'></iframe><div id='SB_overlay'></div><div id='SB_window'></div>");
		$("#SB_overlay").click(SB_remove);
	}
	// TODO replace or check if event is already assigned
	$(window).scroll(SB_position);
	
	// TODO replace
	SB_overlaySize();
	
	// TODO create loader only once, hide and show on demand
	$("body").append("<div id='SB_load'><img src='/images/storebox/loading.gif' /></div>");
	SB_load_position();
	
	// check if a query string is involved
	var baseURL = url.match(/(.+)?/)[1] || url;

	// regex to check if a href refers to an image
	var imageURL = /\.(jpe?g|png|gif|bmp)/gi;

	// check for images
	if ( baseURL.match(imageURL) ) {
		var dummy = { caption: "", url: "", html: "" };
		
		var prev = dummy,
			next = dummy,
			imageCount = "";
			
		// if an image group is given
		if ( rel ) {
			function getInfo(image, id, label) {
				return {
					caption: image.title,
					url: image.href,
					html: "<span id='SB_" + id + "'>&nbsp;&nbsp;<a href='#'>" + label + "</a></span>"
				}
			}
		
			// find the anchors that point to the group
			var imageGroup = $("a[@rel="+rel+"]").get();
			var foundSelf = false;
			
			// loop through the anchors, looking for ourself, saving information about previous and next image
			for (var i = 0; i < imageGroup.length; i++) {
				var image = imageGroup[i];
				var urlTypeTemp = image.href.match(imageURL);
				
				// look for ourself
				if ( image.href == url ) {
					foundSelf = true;
					imageCount = "Image " + (i + 1) + " of "+ (imageGroup.length);
				} else {
					// when we found ourself, the current is the next image
					if ( foundSelf ) {
						next = getInfo(image, "next", "Next &gt;");
						// stop searching
						break;
					} else {
						// didn't find ourself yet, so this may be the one before ourself
						prev = getInfo(image, "prev", "&lt; Prev");
					}
				}
			}
		}
		
		imgPreloader = new Image();
		imgPreloader.onload = function() {
			imgPreloader.onload = null;

			// Resizing large images
			var pagesize = SB_getPageSize();
			var x = pagesize[0] - 150;
			var y = pagesize[1] - 150;
			var imageWidth = imgPreloader.width;
			var imageHeight = imgPreloader.height;
			if (imageWidth > x) {
				imageHeight = imageHeight * (x / imageWidth); 
				imageWidth = x; 
				if (imageHeight > y) { 
					imageWidth = imageWidth * (y / imageHeight); 
					imageHeight = y; 
				}
			} else if (imageHeight > y) { 
				imageWidth = imageWidth * (y / imageHeight); 
				imageHeight = y; 
				if (imageWidth > x) { 
					imageHeight = imageHeight * (x / imageWidth); 
					imageWidth = x;
				}
			}
			// End Resizing
			
			// TODO don't use globals
			SB_WIDTH = imageWidth + 30;
			SB_HEIGHT = imageHeight + 60;
			
			// TODO empty window content instead
			$("#SB_window").append("<a href='' id='SB_ImageOff' title='Close'><img id='SB_Image' src='"+url+"' width='"+imageWidth+"' height='"+imageHeight+"' alt='"+caption+"'/></a>" + "<div id='SB_caption'>"+caption+"<div id='SB_secondLine'>" + imageCount + prev.html + next.html + "</div></div><div id='SB_closeWindow'><a href='#' id='SB_closeWindowButton' title='Close'>close</a></div>");
			
			$("#SB_closeWindowButton").click(SB_remove);
			
			function buildClickHandler(image) {
				return function() {
					$("#SB_window").remove();
					$("body").append("<div id='SB_window'></div>");
					SB_show(image.caption, image.url, rel);
					return false;
				};
			}
			var goPrev = buildClickHandler(prev);
			var goNext = buildClickHandler(next);
			if ( prev.html ) {
				$("#SB_prev").click(goPrev);
			}
			
			if ( next.html ) {		
				$("#SB_next").click(goNext);
			}
			
			// TODO use jQuery, maybe with event fix plugin, or just get the necessary parts of it
			document.onkeydown = function(e) {
				if (e == null) { // ie
					keycode = event.keyCode;
				} else { // mozilla
					keycode = e.which;
				}
				switch(keycode) {
				case 27:
					SB_remove();
					break;
				case 190:
					if( next.html ) {
						document.onkeydown = null;
						goNext();
					}
					break;
				case 188:
					if( prev.html ) {
						document.onkeydown = null;
						goPrev();
					}
					break;
				}
			}
			
			// TODO don't remove loader etc., just hide and show later
			SB_position();
			$("#SB_load").remove();
			$("#SB_ImageOff").click(SB_remove);
			
			// for safari using css instead of show
			// TODO is that necessary? can't test safari
			$("#SB_window").css({display:"block"});
		}
		imgPreloader.src = url;
		
	} else { //code to show html pages

		var queryString = url.match(/\?(.+)/)[1];
		var params = SB_parseQuery( queryString );

		SB_WIDTH = (params['width']*1) + 30;
		SB_HEIGHT = (params['height']*1) + 40;

		var ajaxContentW = SB_WIDTH - 30,
			ajaxContentH = SB_HEIGHT - 45;
		
		if(url.indexOf('SB_iframe') != -1){				
			urlNoQuery = url.split('SB_');		
			$("#SB_window").append("<iframe frameborder='0' scrolling='no' hspace='0' src='"+urlNoQuery[0]+"' id='SB_iframeContent' name='SB_iframeContent' style='width:"+(ajaxContentW + 29)+"px;height:"+(ajaxContentH + 17)+"px;' onload='SB_showIframe()'> </iframe>");
		} else {
			$("#SB_window").append("<div id='SB_ajaxContent' style='width:"+ajaxContentW+"px;height:"+ajaxContentH+"px;'></div>");
		}

		$("#SB_closeWindowButton").click(SB_remove);

			if(url.indexOf('SB_inline') != -1){	
				$("#SB_ajaxContent").html($('#' + params['inlineId']).html());
				SB_position();
				$("#SB_load").remove();
				$("#SB_window").css({display:"block"}); 
			}else if(url.indexOf('SB_iframe') != -1){
				SB_position();
				if(frames['SB_iframeContent'] == undefined){//be nice to safari
					$("#SB_load").remove();
					$("#SB_window").css({display:"block"});
					$(document).keyup( function(e){ var key = e.keyCode; if(key == 27){SB_remove()} });
				}
			}else{
				$("#SB_ajaxContent").load(url, function(){
					SB_position();
					$("#SB_load").remove();
					$("#SB_window").css({display:"block"}); 
				});
			}
		
	}
	
	$(window).resize(SB_position);
	
	document.onkeyup = function(e){ 	
		if (e == null) { // ie
			keycode = event.keyCode;
		} else { // mozilla
			keycode = e.which;
		}
		if(keycode == 27){ // close
			SB_remove();
		}	
	}
		
}








function SB_click(obj){
	obj.blur();
	// get caption: either title or name attribute
	var caption = obj.title || obj.name || "";

	// display the box for the elements href
	SB_show(caption, obj.value, false);

	return false;
}

// called when the user clicks on a storebox link
function SB_show(caption, url, rel) {

	// create iframe, overlay and box if non-existent
	if ( !$("#SB_HideSelect").length ) {
		$("body").append("<iframe id='SB_HideSelect'></iframe><div id='SB_overlay'></div><div id='SB_window'></div>");
		$("#SB_overlay").click(SB_remove);
	}
	// TODO replace or check if event is already assigned
	$(window).scroll(SB_position);
	
	// TODO replace
	SB_overlaySize();
	
	// TODO create loader only once, hide and show on demand
	$("body").append("<div id='SB_load'><img src='/images/storebox/loading.gif' /></div>");
	SB_load_position();
	
	// check if a query string is involved
	var baseURL = url.match(/(.+)?/)[1] || url;

	// regex to check if a href refers to an image
	var imageURL = /\.(jpe?g|png|gif|bmp)/gi;

	// check for images
	if ( baseURL.match(imageURL) ) {
		var dummy = { caption: "", url: "", html: "" };
		
		var prev = dummy,
			next = dummy,
			imageCount = "";
			
		// if an image group is given
		if ( rel ) {
			function getInfo(image, id, label) {
				return {
					caption: image.title,
					url: image.href,
					html: "<span id='SB_" + id + "'>&nbsp;&nbsp;<a href='#'>" + label + "</a></span>"
				}
			}
		
			// find the anchors that point to the group
			var imageGroup = $("a[@rel="+rel+"]").get();
			var foundSelf = false;
			
			// loop through the anchors, looking for ourself, saving information about previous and next image
			for (var i = 0; i < imageGroup.length; i++) {
				var image = imageGroup[i];
				var urlTypeTemp = image.href.match(imageURL);
				
				// look for ourself
				if ( image.href == url ) {
					foundSelf = true;
					imageCount = "Image " + (i + 1) + " of "+ (imageGroup.length);
				} else {
					// when we found ourself, the current is the next image
					if ( foundSelf ) {
						next = getInfo(image, "next", "Next &gt;");
						// stop searching
						break;
					} else {
						// didn't find ourself yet, so this may be the one before ourself
						prev = getInfo(image, "prev", "&lt; Prev");
					}
				}
			}
		}
		
		imgPreloader = new Image();
		imgPreloader.onload = function() {
			imgPreloader.onload = null;

			// Resizing large images
			var pagesize = SB_getPageSize();
			var x = pagesize[0] - 150;
			var y = pagesize[1] - 150;
			var imageWidth = imgPreloader.width;
			var imageHeight = imgPreloader.height;
			if (imageWidth > x) {
				imageHeight = imageHeight * (x / imageWidth); 
				imageWidth = x; 
				if (imageHeight > y) { 
					imageWidth = imageWidth * (y / imageHeight); 
					imageHeight = y; 
				}
			} else if (imageHeight > y) { 
				imageWidth = imageWidth * (y / imageHeight); 
				imageHeight = y; 
				if (imageWidth > x) { 
					imageHeight = imageHeight * (x / imageWidth); 
					imageWidth = x;
				}
			}
			// End Resizing
			
			// TODO don't use globals
			SB_WIDTH = imageWidth + 30;
			SB_HEIGHT = imageHeight + 60;
			
			// TODO empty window content instead
			$("#SB_window").append("<a href='' id='SB_ImageOff' title='Close'><img id='SB_Image' src='"+url+"' width='"+imageWidth+"' height='"+imageHeight+"' alt='"+caption+"'/></a>" + "<div id='SB_caption'>"+caption+"<div id='SB_secondLine'>" + imageCount + prev.html + next.html + "</div></div><div id='SB_closeWindow'><a href='#' id='SB_closeWindowButton' title='Close'>close</a></div>");
			
			$("#SB_closeWindowButton").click(SB_remove);
			
			function buildClickHandler(image) {
				return function() {
					$("#SB_window").remove();
					$("body").append("<div id='SB_window'></div>");
					SB_show(image.caption, image.url, rel);
					return false;
				};
			}
			var goPrev = buildClickHandler(prev);
			var goNext = buildClickHandler(next);
			if ( prev.html ) {
				$("#SB_prev").click(goPrev);
			}
			
			if ( next.html ) {		
				$("#SB_next").click(goNext);
			}
			
			// TODO use jQuery, maybe with event fix plugin, or just get the necessary parts of it
			document.onkeydown = function(e) {
				if (e == null) { // ie
					keycode = event.keyCode;
				} else { // mozilla
					keycode = e.which;
				}
				switch(keycode) {
				case 27:
					SB_remove();
					break;
				case 190:
					if( next.html ) {
						document.onkeydown = null;
						goNext();
					}
					break;
				case 188:
					if( prev.html ) {
						document.onkeydown = null;
						goPrev();
					}
					break;
				}
			}
			
			// TODO don't remove loader etc., just hide and show later
			SB_position();
			$("#SB_load").remove();
			$("#SB_ImageOff").click(SB_remove);
			
			// for safari using css instead of show
			// TODO is that necessary? can't test safari
			$("#SB_window").css({display:"block"});
		}
		imgPreloader.src = url;
		
	} else { //code to show html pages

		var queryString = url.match(/\?(.+)/)[1];
		var params = SB_parseQuery( queryString );

		SB_WIDTH = (params['width']*1) + 30;
		SB_HEIGHT = (params['height']*1) + 40;

		var ajaxContentW = SB_WIDTH - 30,
			ajaxContentH = SB_HEIGHT - 45;
		
		if(url.indexOf('SB_iframe') != -1){				
			urlNoQuery = url.split('SB_');		
			$("#SB_window").append("<div id='SB_title'><div id='SB_ajaxWindowTitle'>&nbsp;&nbsp;&nbsp;"+caption+"</div><div id='SB_closeAjaxWindow'><a href='#' id='SB_closeWindowButton'>关闭</a></div></div><iframe frameborder='0' scrolling='no' hspace='0' src='"+urlNoQuery[0]+"' id='SB_iframeContent' name='SB_iframeContent' style='width:"+(ajaxContentW + 29)+"px;height:"+(ajaxContentH + 17)+"px;' onload='SB_showIframe()'> </iframe>");
		} else {
			$("#SB_window").append("<div id='SB_title'><div id='SB_ajaxWindowTitle'>&nbsp;&nbsp;&nbsp;"+caption+"</div><div id='SB_closeAjaxWindow'><a href='#' id='SB_closeWindowButton'>关闭</a></div></div><div id='SB_ajaxContent' style='width:"+ajaxContentW+"px;height:"+ajaxContentH+"px;'></div>");
		}

		$("#SB_closeWindowButton").click(SB_remove);

			if(url.indexOf('SB_inline') != -1){	
				$("#SB_ajaxContent").html($('#' + params['inlineId']).html());
				SB_position();
				$("#SB_load").remove();
				$("#SB_window").css({display:"block"}); 
			}else if(url.indexOf('SB_iframe') != -1){
				SB_position();
				if(frames['SB_iframeContent'] == undefined){//be nice to safari
					$("#SB_load").remove();
					$("#SB_window").css({display:"block"});
					$(document).keyup( function(e){ var key = e.keyCode; if(key == 27){SB_remove()} });
				}
			}else{
				$("#SB_ajaxContent").load(url, function(){
					SB_position();
					$("#SB_load").remove();
					$("#SB_window").css({display:"block"}); 
				});
			}
		
	}
	
	$(window).resize(SB_position);
	
	document.onkeyup = function(e){ 	
		if (e == null) { // ie
			keycode = event.keyCode;
		} else { // mozilla
			keycode = e.which;
		}
		if(keycode == 27){ // close
			SB_remove();
		}	
	}
		
}

//helper functions below

function SB_showIframe(){
	$("#SB_load").remove();
	$("#SB_window").css({display:"block"});
}

function SB_remove() {
 	$("#SB_imageOff").unbind("click");
	$("#SB_overlay").unbind("click");
	$("#SB_closeWindowButton").unbind("click");
	$("#SB_window").fadeOut("fast",function(){$('#SB_window,#SB_overlay,#SB_HideSelect').remove();});
	$("#SB_load").remove();
	$(window).unbind("scroll");
	return false;
}


function SB_showContent(msg, unClose) {
	$("#SB_ajaxContent").html(msg);
	if (unClose==true) {
	 	$("#SB_imageOff").unbind("click");
		$("#SB_overlay").unbind("click");
		$("#SB_closeWindowButton").unbind("click");
	}
	else {
		SB_bindClose(unClose);
	}
}

function SB_load(msg, url, unclose) {
	$("#SB_ajaxContent").html(msg);
	if (unclose==true) {
	 	$("#SB_imageOff").unbind("click");
		$("#SB_overlay").unbind("click");
		$("#SB_closeWindowButton").unbind("click");
	}
	$("#SB_ajaxContent").load(url, function(){
		SB_position();
		$("#SB_load").remove();
		$("#SB_window").css({display:"block"});
		if (unclose==true){
			$("#SB_overlay").click(SB_remove);
			$("#SB_imageOff").click(SB_remove);
			$("#SB_closeWindowButton").click(SB_remove);
		}
	});
}


function SB_unbindClose()
{
 	$("#SB_imageOff").unbind("click");
	$("#SB_overlay").unbind("click");
	$("#SB_closeWindowButton").unbind("click");
}

function SB_bindClose(callback)
{
	if (!callback) callback = '';
	switch (callback) {
		case 'reload':
			$("#SB_overlay").click(SB_reload);
			$("#SB_imageOff").click(SB_reload);
			$("#SB_closeWindowButton").click(SB_reload);
			break;
		default:
			$("#SB_overlay").click(SB_remove);
			$("#SB_imageOff").click(SB_remove);
			$("#SB_closeWindowButton").click(SB_remove);
			break;
	}
}

function SB_reload()
{
	window.location.reload();
}

function SB_position() {
	var pagesize = SB_getPageSize();	
	var arrayPageScroll = SB_getPageScrollTop();
	var style = {width: SB_WIDTH, left: (arrayPageScroll[0] + (pagesize[0] - SB_WIDTH)/2), top: (arrayPageScroll[1] + (pagesize[1]-SB_HEIGHT)/2)};
	$("#SB_window").css(style);
}

function SB_overlaySize(){
	if (window.innerHeight && window.scrollMaxY || window.innerWidth && window.scrollMaxX) {	
		yScroll = window.innerHeight + window.scrollMaxY;
		xScroll = window.innerWidth + window.scrollMaxX;
		var deff = document.documentElement;
		var wff = (deff&&deff.clientWidth) || document.body.clientWidth || window.innerWidth || self.innerWidth;
		var hff = (deff&&deff.clientHeight) || document.body.clientHeight || window.innerHeight || self.innerHeight;
		xScroll -= (window.innerWidth - wff);
		yScroll -= (window.innerHeight - hff);
	} else if (document.body.scrollHeight > document.body.offsetHeight || document.body.scrollWidth > document.body.offsetWidth){ // all but Explorer Mac
		yScroll = document.body.scrollHeight;
		xScroll = document.body.scrollWidth;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		yScroll = document.body.offsetHeight;
		xScroll = document.body.offsetWidth;
  	}
	$("#SB_overlay").css({"height": yScroll, "width": xScroll});
	$("#SB_HideSelect").css({"height": yScroll,"width": xScroll});
}

function SB_load_position() {
	var pagesize = SB_getPageSize();
	var arrayPageScroll = SB_getPageScrollTop();
	$("#SB_load")
		.css({left: (arrayPageScroll[0] + (pagesize[0] - 100)/2), top: (arrayPageScroll[1] + ((pagesize[1]-100)/2)) })
		.css({display:"block"});
}

function SB_parseQuery ( query ) {
	// return empty object
	if( !query )
		return {};
	var params = {};
	
	// parse query
	var pairs = query.split(/[;&]/);
	for ( var i = 0; i < pairs.length; i++ ) {
		var pair = pairs[i].split('=');
		if ( !pair || pair.length != 2 )
			continue;
		// unescape both key and value, replace "+" with spaces in value
		params[unescape(pair[0])] = unescape(pair[1]).replace(/\+/g, ' ');
   }
   return params;
}

function SB_getPageScrollTop(){
	var yScrolltop;
	var xScrollleft;
	if (self.pageYOffset || self.pageXOffset) {
		yScrolltop = self.pageYOffset;
		xScrollleft = self.pageXOffset;
	} else if (document.documentElement && document.documentElement.scrollTop || document.documentElement.scrollLeft ){	 // Explorer 6 Strict
		yScrolltop = document.documentElement.scrollTop;
		xScrollleft = document.documentElement.scrollLeft;
	} else if (document.body) {// all other Explorers
		yScrolltop = document.body.scrollTop;
		xScrollleft = document.body.scrollLeft;
	}
	arrayPageScroll = new Array(xScrollleft,yScrolltop) 
	return arrayPageScroll;
}

function SB_getPageSize(){
	var de = document.documentElement;
	var w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
	var h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight
	arrayPageSize = new Array(w,h) 
	return arrayPageSize;
}