var Spry; if (!Spry) Spry = {};

//////////////////////////////////////////////////////////////////////
//
// Spry.Utils
//
//////////////////////////////////////////////////////////////////////

if (!Spry.Utils) Spry.Utils = {};

Spry.Utils.msProgIDs = ["MSXML2.XMLHTTP.6.0", "MSXML2.XMLHTTP.5.0", "MSXML2.XMLHTTP.4.0", "MSXML2.XMLHTTP.3.0", "MSXML2.XMLHTTP", "Microsoft.XMLHTTP"];

Spry.Utils.createXMLHttpRequest = function()
{
	var req = null;
	try
	{
		// Try to use the ActiveX version of XMLHttpRequest. This will
		// allow developers to load file URLs in IE7 when running in the
		// local zone.

		if (window.ActiveXObject)
		{
			while (!req && Spry.Utils.msProgIDs.length)
			{
				try { req = new ActiveXObject(Spry.Utils.msProgIDs[0]); } catch (e) { req = null; }
				if (!req)
					Spry.Utils.msProgIDs.splice(0, 1);
			}
		}

		// We're either running in a non-IE browser, or we failed to
		// create the ActiveX version of the XMLHttpRequest object.
		// Try to use the native version of XMLHttpRequest if it exists.

		if (!req && window.XMLHttpRequest)
			req = new XMLHttpRequest();
	}
	catch (e) { req = null;	}

	if (!req)
		Spry.Debug.reportError("Failed to create an XMLHttpRequest object!" );

	return req;
};

Spry.Utils.loadURL = function(method, url, async, callback, opts)
{
	var req = new Spry.Utils.loadURL.Request();
	req.method = method;
	req.url = url;
	req.async = async;
	req.successCallback = callback;
	Spry.Utils.setOptions(req, opts);

	try
	{
		req.xhRequest = Spry.Utils.createXMLHttpRequest();
		if (!req.xhRequest)
			return null;

		if (req.async)
			req.xhRequest.onreadystatechange = function() { Spry.Utils.loadURL.callback(req); };

		req.xhRequest.open(req.method, req.url, req.async, req.username, req.password);

		if (req.headers)
		{
			for (var name in req.headers)
				req.xhRequest.setRequestHeader(name, req.headers[name]);
		}

		req.xhRequest.send(req.postData);

		if (!req.async)
			Spry.Utils.loadURL.callback(req);
	}
	catch(e)
	{
		if (req.errorCallback)
			req.errorCallback(req);
		else
			Spry.Debug.reportError("Exception caught while loading " + url + ": " + e);
		req = null;
	}

	return req;
};

Spry.Utils.loadURL.callback = function(req)
{
	if (!req || req.xhRequest.readyState != 4)
		return;
	if (req.successCallback && (req.xhRequest.status == 200 || req.xhRequest.status == 0))
		req.successCallback(req);
	else if (req.errorCallback)
		req.errorCallback(req);
};

Spry.Utils.loadURL.Request = function()
{
	var props = Spry.Utils.loadURL.Request.props;
	var numProps = props.length;

	for (var i = 0; i < numProps; i++)
		this[props[i]] = null;

	this.method = "GET";
	this.async = true;
	this.headers = {};
};

Spry.Utils.loadURL.Request.props = [ "method", "url", "async", "username", "password", "postData", "successCallback", "errorCallback", "headers", "userData", "xhRequest" ];

Spry.Utils.loadURL.Request.prototype.extractRequestOptions = function(opts, undefineRequestProps)
{
	if (!opts)
		return;

	var props = Spry.Utils.loadURL.Request.props;
	var numProps = props.length;

	for (var i = 0; i < numProps; i++)
	{
		var prop = props[i];
		if (opts[prop] != undefined)
		{
			this[prop] = opts[prop];
			if (undefineRequestProps)
				opts[prop] = undefined;
		}
	}
};

Spry.Utils.loadURL.Request.prototype.clone = function()
{
	var props = Spry.Utils.loadURL.Request.props;
	var numProps = props.length;
	var req = new Spry.Utils.loadURL.Request;
	for (var i = 0; i < numProps; i++)
		req[props[i]] = this[props[i]];
	if (this.headers)
	{
		req.headers = {};
		Spry.Utils.setOptions(req.headers, this.headers);
	}
	return req;
};

Spry.Utils.setInnerHTML = function(ele, str, preventScripts)
{
	if (!ele)
		return;
	ele = Spry.$(ele);
	var scriptExpr = "<script[^>]*>(.|\s|\n|\r)*?</script>";
	ele.innerHTML = str.replace(new RegExp(scriptExpr, "img"), "");

	if (preventScripts)
		return;

	var matches = str.match(new RegExp(scriptExpr, "img"));
	if (matches)
	{
		var numMatches = matches.length;
		for (var i = 0; i < numMatches; i++)
		{
			var s = matches[i].replace(/<script[^>]*>[\s\r\n]*(<\!--)?|(-->)?[\s\r\n]*<\/script>/img, "");
			Spry.Utils.eval(s);
		}
	}
};

Spry.Utils.updateContent = function (ele, url, finishFunc, opts)
{
	Spry.Utils.loadURL("GET", url, true, function(req)
	{
		Spry.Utils.setInnerHTML(ele, req.xhRequest.responseText);
		if (finishFunc)
			finishFunc(ele, url);
	}, opts);
};

Spry.Utils.addEventListener = function(element, eventType, handler, capture)
{
	try
	{
		element = Spry.$(element);
		if (element.addEventListener)
			element.addEventListener(eventType, handler, capture);
		else if (element.attachEvent)
			element.attachEvent("on" + eventType, handler);
	}
	catch (e) {}
};

Spry.Utils.removeEventListener = function(element, eventType, handler, capture)
{
	try
	{
		element = Spry.$(element);
		if (element.removeEventListener)
			element.removeEventListener(eventType, handler, capture);
		else if (element.detachEvent)
			element.detachEvent("on" + eventType, handler);
	}
	catch (e) {}
};

Spry.Utils.addLoadListener = function(handler)
{
	if (typeof window.addEventListener != 'undefined')
		window.addEventListener('load', handler, false);
	else if (typeof document.addEventListener != 'undefined')
		document.addEventListener('load', handler, false);
	else if (typeof window.attachEvent != 'undefined')
		window.attachEvent('onload', handler);
};

Spry.Utils.eval = function(str)
{
	// Call this method from your JS function when
	// you don't want the JS expression to access or
	// interfere with any local variables in your JS
	// function.

	return eval(str);
};

Spry.Utils.escapeQuotesAndLineBreaks = function(str)
{
	if (str)
	{
		str = str.replace(/\\/g, "\\\\");
		str = str.replace(/["']/g, "\\$&");
		str = str.replace(/\n/g, "\\n");
		str = str.replace(/\r/g, "\\r");
	}
	return str;
};

Spry.Utils.encodeEntities = function(str)
{
	if (str && str.search(/[&<>"]/) != -1)
	{
		str = str.replace(/&/g, "&amp;");
		str = str.replace(/</g, "&lt;");
		str = str.replace(/>/g, "&gt;");
		str = str.replace(/"/g, "&quot;");
	}
	return str
};

Spry.Utils.decodeEntities = function(str)
{
	var d = Spry.Utils.decodeEntities.div;
	if (!d)
	{
		d = document.createElement('div');
		Spry.Utils.decodeEntities.div = d;
		if (!d) return str;
	}
	d.innerHTML = str;
	if (d.childNodes.length == 1 && d.firstChild.nodeType == 3 /* Node.TEXT_NODE */ && d.firstChild.nextSibling == null)
		str = d.firstChild.data;
	else
	{
		// Hmmm, innerHTML processing of str produced content
		// we weren't expecting, so just replace entities we
		// expect folks will use in node attributes that contain
		// JavaScript.
		str = str.replace(/&lt;/gi, "<");
		str = str.replace(/&gt;/gi, ">");
		str = str.replace(/&quot;/gi, "\"");
		str = str.replace(/&amp;/gi, "&");
	}
	return str;
};

Spry.Utils.fixupIETagAttributes = function(inStr)
{
	var outStr = "";

	// Break the tag string into 3 pieces.

	var tagStart = inStr.match(/^<[^\s>]+\s*/)[0];
	var tagEnd = inStr.match(/\s*\/?>$/)[0];
	var tagAttrs = inStr.replace(/^<[^\s>]+\s*|\s*\/?>/g, "");

	// Write out the start of the tag.
	outStr += tagStart;

	// If the tag has attributes, parse it out manually to avoid accidentally fixing up
	// attributes that contain JavaScript expressions.

	if (tagAttrs)
	{
		var startIndex = 0;
		var endIndex = 0;

		while (startIndex < tagAttrs.length)
		{
			// Find the '=' char of the attribute.
			while (tagAttrs.charAt(endIndex) != '=' && endIndex < tagAttrs.length)
				++endIndex;

			// If we are at the end of the string, just write out what we've
			// collected.

			if (endIndex >= tagAttrs.length)
			{
				outStr += tagAttrs.substring(startIndex, endIndex);
				break;
			}

			// Step past the '=' character and write out what we've
			// collected so far.

			++endIndex;
			outStr += tagAttrs.substring(startIndex, endIndex);
			startIndex = endIndex;

			if (tagAttrs.charAt(endIndex) == '"' || tagAttrs.charAt(endIndex) == "'")
			{
				// Attribute is quoted. Advance us past the quoted value!
				var savedIndex = endIndex++;
				while (endIndex < tagAttrs.length)
				{
					if (tagAttrs.charAt(endIndex) == tagAttrs.charAt(savedIndex))
					{
						endIndex++;
						break;
					}
					else if (tagAttrs.charAt(endIndex) == "\\")
						endIndex++;
					endIndex++;
				}

				outStr += tagAttrs.substring(startIndex, endIndex);
				startIndex = endIndex;
			}
			else
			{
				// This attribute value wasn't quoted! Wrap it with quotes and
				// write out everything till we hit a space, or the end of the
				// string.

				outStr += "\"";

				var sIndex = tagAttrs.slice(endIndex).search(/\s/);
				endIndex = (sIndex != -1) ? (endIndex + sIndex) : tagAttrs.length;
				outStr += tagAttrs.slice(startIndex, endIndex);
				outStr += "\"";
				startIndex = endIndex;
			}
		}
	}

	outStr += tagEnd;

	// Write out the end of the tag.
	return outStr;
};

Spry.Utils.fixUpIEInnerHTML = function(inStr)
{
	var outStr = "";

	// Create a regular expression that will match:
	//     <!--
	//     <![CDATA[
	//     <tag>
	//     -->
	//     ]]>
	//     ]]&gt;   // Yet another workaround for an IE innerHTML bug.
	//
	// The idea here is that we only want to fix up attribute values on tags that
	// are not in any comments or CDATA.

	var regexp = new RegExp("<\\!--|<\\!\\[CDATA\\[|<\\w+[^<>]*>|-->|\\]\\](>|\&gt;)", "g");
	var searchStartIndex = 0;
	var skipFixUp = 0;

	while (inStr.length)
	{
		var results = regexp.exec(inStr);
		if (!results || !results[0])
		{
			outStr += inStr.substr(searchStartIndex, inStr.length - searchStartIndex);
			break;
		}

		if (results.index != searchStartIndex)
		{
			// We found a match but it's not at the start of the inStr.
			// Create a string token for everything that precedes the match.
			outStr += inStr.substr(searchStartIndex, results.index - searchStartIndex);
		}

		if (results[0] == "<!--" || results[0] == "<![CDATA[")
		{
			++skipFixUp;
			outStr += results[0];
		}
		else if (results[0] == "-->" || results[0] == "]]>" || (skipFixUp && results[0] == "]]&gt;"))
		{
			--skipFixUp;
			outStr += results[0];
		}
		else if (!skipFixUp && results[0].charAt(0) == '<')
			outStr += Spry.Utils.fixupIETagAttributes(results[0]);
		else
			outStr += results[0];

		searchStartIndex = regexp.lastIndex;
	}

	return outStr;
};

Spry.Utils.stringToXMLDoc = function(str)
{
	var xmlDoc = null;

	try
	{
		// Attempt to parse the string using the IE method.

		var xmlDOMObj = new ActiveXObject("Microsoft.XMLDOM");
		xmlDOMObj.async = false;
		xmlDOMObj.loadXML(str);
		xmlDoc = xmlDOMObj;
	}
	catch (e)
	{
		// The IE method didn't work. Try the Mozilla way.

		try
		{
			var domParser = new DOMParser;
			xmlDoc = domParser.parseFromString(str, 'text/xml');
		}
		catch (e)
		{
			Spry.Debug.reportError("Caught exception in Spry.Utils.stringToXMLDoc(): " + e + "\n");
			xmlDoc = null;
		}
	}

	return xmlDoc;
};

Spry.Utils.serializeObject = function(obj)
{
	// Create a JSON representation of a given object.

	var str = "";
	var firstItem = true;

	if (obj == null || obj == undefined)
		return str + obj;

	var objType = typeof obj;

	if (objType == "number" || objType == "boolean")
		str += obj;
	else if (objType == "string")
		str += "\"" + Spry.Utils.escapeQuotesAndLineBreaks(obj) + "\"";
	else if (obj.constructor == Array)
	{
		str += "[";
		for (var i = 0; i < obj.length; i++)
		{
			if (!firstItem)
				str += ", ";
			str += Spry.Utils.serializeObject(obj[i]);
			firstItem = false;
		}
		str += "]";
	}
	else if (objType == "object")
	{
		str += "{";
		for (var p in obj)
		{
			if (!firstItem)
				str += ", ";
			str += "\"" + p + "\": " + Spry.Utils.serializeObject(obj[p]);
			firstItem = false;
		}
		str += "}";
	}
	return str;
};

Spry.Utils.getNodesByFunc = function(root, func)
{
	var nodeStack = new Array;
	var resultArr = new Array;
	var node = root;

	while (node)
	{
		if (func(node))
			resultArr.push(node);

		if (node.hasChildNodes())
		{
			nodeStack.push(node);
			node = node.firstChild;
		}
		else
		{
			if (node == root)
				node = null;
			else
				try { node = node.nextSibling; } catch (e) { node = null; };
		}

		while (!node && nodeStack.length > 0)
		{
			node = nodeStack.pop();
			if (node == root)
				node = null;
			else
				try { node = node.nextSibling; } catch (e) { node = null; }
		}
	}

	if (nodeStack && nodeStack.length > 0)
		Spry.Debug.trace("-- WARNING: Spry.Utils.getNodesByFunc() failed to traverse all nodes!\n");

	return resultArr;
};

Spry.Utils.addClassName = function(ele, className)
{
	ele = Spry.$(ele);
	if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) != -1))
		return;
	ele.className += (ele.className ? " " : "") + className;
};

Spry.Utils.removeClassName = function(ele, className)
{
	ele = Spry.$(ele);
	if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) == -1))
		return;
	ele.className = ele.className.replace(new RegExp("\\s*\\b" + className + "\\b", "g"), "");
};

Spry.Utils.getFirstChildWithNodeName = function(node, nodeName)
{
	var child = node.firstChild;

	while (child)
	{
		if (child.nodeName == nodeName)
			return child;
		child = child.nextSibling;
	}

	return null;
};

Spry.Utils.nodeContainsElementNode = function(node)
{
	if (node)
	{
		node = node.firstChild;

		while (node)
		{
			if (node.nodeType == 1 /* Node.ELEMENT_NODE */)
				return true;

			node = node.nextSibling;
		}
	}
	return false;
};

Spry.Utils.getNodeText = function(node)
{
	var txt = "";

	if (!node)
		return;

	try
	{
		var child = node.firstChild;

		while (child)
		{
			try
			{
				if (child.nodeType == 3 /* TEXT_NODE */)
					txt += Spry.Utils.encodeEntities(child.data);
				else if (child.nodeType == 4 /* CDATA_SECTION_NODE */)
					txt += child.data;
			} catch (e) { Spry.Debug.reportError("Spry.Utils.getNodeText() exception caught: " + e + "\n"); }

			child = child.nextSibling;
		}
	}
	catch (e) { Spry.Debug.reportError("Spry.Utils.getNodeText() exception caught: " + e + "\n"); }

	return txt;
};

Spry.Utils.CreateObjectForNode = function(node)
{
	if (!node)
		return null;

	var obj = new Object();
	var i = 0;
	var attr = null;

	try
	{
		for (i = 0; i < node.attributes.length; i++)
		{
			attr = node.attributes[i];
			if (attr && attr.nodeType == 2 /* Node.ATTRIBUTE_NODE */)
				obj["@" + attr.name] = attr.value;
		}
	}
	catch (e)
	{
		Spry.Debug.reportError("Spry.Utils.CreateObjectForNode() caught exception while accessing attributes: " + e + "\n");
	}

	var child = node.firstChild;

	if (child && !child.nextSibling && child.nodeType != 1 /* Node.ELEMENT_NODE */)
	{
		// We have a single child and it's not an element. It must
		// be the text value for this node. Add it to the record set and
		// give it the column the same name as the node.

		obj[node.nodeName] = Spry.Utils.getNodeText(node);
	}

	while (child)
	{
		// Add the text value for each child element. Note that
		// We skip elements that have element children (sub-elements)
		// because we don't handle multi-level data sets right now.

		if (child.nodeType == 1 /* Node.ELEMENT_NODE */)
		{
			if (!Spry.Utils.nodeContainsElementNode(child))
			{
				obj[child.nodeName] = Spry.Utils.getNodeText(child);

				// Now add properties for any attributes on the child. The property
				// name will be of the form "<child.nodeName>/@<attr.name>".
				try
				{
					var namePrefix = child.nodeName + "/@";

					for (i = 0; i < child.attributes.length; i++)
					{
						attr = child.attributes[i];
						if (attr && attr.nodeType == 2 /* Node.ATTRIBUTE_NODE */)
							obj[namePrefix + attr.name] = attr.value;
					}
				}
				catch (e)
				{
					Spry.Debug.reportError("Spry.Utils.CreateObjectForNode() caught exception while accessing attributes: " + e + "\n");
				}
			}
		}

		child = child.nextSibling;
	}

	return obj;
};

Spry.Utils.getRecordSetFromXMLDoc = function(xmlDoc, path, suppressColumns)
{
	if (!xmlDoc || !path)
		return null;

	var recordSet = new Object();
	recordSet.xmlDoc = xmlDoc;
	recordSet.xmlPath = path;
	recordSet.dataHash = new Object;
	recordSet.data = new Array;
	recordSet.getData = function() { return this.data; };

	// Use the XPath library to find the nodes that will
	// make up our data set. The result should be an array
	// of subtrees that we need to flatten.

	var ctx = new ExprContext(xmlDoc);
	var pathExpr = xpathParse(path);
	var e = pathExpr.evaluate(ctx);

	// XXX: Note that we should check the result type of the evaluation
	// just in case it's a boolean, string, or number value instead of
	// a node set.

	var nodeArray = e.nodeSetValue();

	var isDOMNodeArray = true;

	if (nodeArray && nodeArray.length > 0)
		isDOMNodeArray = nodeArray[0].nodeType != 2 /* Node.ATTRIBUTE_NODE */;

	var nextID = 0;

	// We now have the set of nodes that make up our data set
	// so process each one.

	for (var i = 0; i < nodeArray.length; i++)
	{
		var rowObj = null;

		if (suppressColumns)
			rowObj = new Object;
		else
		{
			if (isDOMNodeArray)
				rowObj = Spry.Utils.CreateObjectForNode(nodeArray[i]);
			else // Must be a Node.ATTRIBUTE_NODE array.
			{
				rowObj = new Object;
				rowObj["@" + nodeArray[i].name] = nodeArray[i].value;
			}
		}

		if (rowObj)
		{
			// We want to make sure that every row has a unique ID and since we
			// we don't know which column, if any, in this recordSet is a unique
			// identifier, we generate a unique ID ourselves and store it under
			// the ds_RowID column in the row object.

			rowObj['ds_RowID'] = nextID++;
			rowObj['ds_XMLNode'] = nodeArray[i];
			recordSet.dataHash[rowObj['ds_RowID']] = rowObj;
			recordSet.data.push(rowObj);
		}
	}

	return recordSet;
};

Spry.Utils.setOptions = function(obj, optionsObj, ignoreUndefinedProps)
{
	if (!optionsObj)
		return;

	for (var optionName in optionsObj)
	{
		if (ignoreUndefinedProps && optionsObj[optionName] == undefined)
			continue;
		obj[optionName] = optionsObj[optionName];
	}
};

Spry.Utils.SelectionManager = {};
Spry.Utils.SelectionManager.selectionGroups = new Object;

Spry.Utils.SelectionManager.SelectionGroup = function()
{
	this.selectedElements = new Array;
};

Spry.Utils.SelectionManager.SelectionGroup.prototype.select = function(element, className, multiSelect)
{
	var selObj = null;

	if (!multiSelect)
	{
		// Multiple selection is not enabled, so clear any
		// selected elements from our list.

		this.clearSelection();
	}
	else
	{
		// Multiple selection is enabled, so check to see if element
		// is already in the array. If it is, make sure the className
		// is the className that was passed in.

		for (var i = 0; i < this.selectedElements.length; i++)
		{
			selObj = this.selectedElements[i].element;

			if (selObj.element == element)
			{
				if (selObj.className != className)
				{
					Spry.Utils.removeClassName(element, selObj.className);
					Spry.Utils.addClassName(element, className);
				}
				return;
			}
		}
	}

	// Add the element to our list of selected elements.

	selObj = new Object;
	selObj.element = element;
	selObj.className = className;
	this.selectedElements.push(selObj);
	Spry.Utils.addClassName(element, className);
};

Spry.Utils.SelectionManager.SelectionGroup.prototype.unSelect = function(element)
{
	for (var i = 0; i < this.selectedElements.length; i++)
	{
		var selObj = this.selectedElements[i].element;

		if (selObj.element == element)
		{
			Spry.Utils.removeClassName(selObj.element, selObj.className);
			return;
		}
	}
};

Spry.Utils.SelectionManager.SelectionGroup.prototype.clearSelection = function()
{
	var selObj = null;

	do
	{
		selObj = this.selectedElements.shift();
		if (selObj)
			Spry.Utils.removeClassName(selObj.element, selObj.className);
	}
	while (selObj);
};

Spry.Utils.SelectionManager.getSelectionGroup = function(selectionGroupName)
{
	if (!selectionGroupName)
		return null;

	var groupObj = Spry.Utils.SelectionManager.selectionGroups[selectionGroupName];

	if (!groupObj)
	{
		groupObj = new Spry.Utils.SelectionManager.SelectionGroup();
		Spry.Utils.SelectionManager.selectionGroups[selectionGroupName] = groupObj;
	}

	return groupObj;
};

Spry.Utils.SelectionManager.select = function(selectionGroupName, element, className, multiSelect)
{
	var groupObj = Spry.Utils.SelectionManager.getSelectionGroup(selectionGroupName);

	if (!groupObj)
		return;

	groupObj.select(element, className, multiSelect);
};

Spry.Utils.SelectionManager.unSelect = function(selectionGroupName, element)
{
	var groupObj = Spry.Utils.SelectionManager.getSelectionGroup(selectionGroupName);

	if (!groupObj)
		return;

	groupObj.unSelect(element, className);
};

Spry.Utils.SelectionManager.clearSelection = function(selectionGroupName)
{
	var groupObj = Spry.Utils.SelectionManager.getSelectionGroup(selectionGroupName);

	if (!groupObj)
		return;

	groupObj.clearSelection();
};