// Licensed Materials - Property of IBM
//
// IBM Cognos Products: pps
//
// (C) Copyright IBM Corp. 2005, 2017
//
// US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
//This Javascript file defines a class that streams an attribute tree to and from XML

function AttributeTreeStreamer() {

	this.getAttributeTreeFromXML = function(xmlDoc) {
	
		var attrTree = new AttributeTree();
		
		//Get to the root node
		
		var root = null;
		for (var i = 0; (i < xmlDoc.childNodes.length && root == null); i++) {
			if (xmlDoc.childNodes[i].nodeName == "admin")
				root = xmlDoc.childNodes[i];
		}
		//Also get the next item( the tree root )
		if (root.childNodes[0].getAttribute("name") == "TreeRoot")
			root = root.childNodes[0];
		
		if (root) {
			for (var i = 0; i < root.childNodes.length; i++)
				createAttributeNode(root.childNodes[i], attrTree.getRoot());
		}
			
		return attrTree;
	}
	
	function createAttributeNode(domNode, parentAttNode) {
		var node = null;
		var name = domNode.getAttribute("name");
	
		if (domNode.getAttribute("type") == "folder") {
		    node = new AttributeTreeNodeFolder(name);
		    
		    for (var i = 0; i < domNode.childNodes.length; i++)
				createAttributeNode(domNode.childNodes[i],node);
		
		} else if (domNode.getAttribute("type") == "int") {
			node = new AttributeTreeNodeInt(name,
											parseInt(domNode.getAttribute("value")),
											domNode.getAttribute("subtype"),
											(domNode.getAttribute("specialized") == '1'));
		} else if (domNode.getAttribute("type") == "string") {
			node = new AttributeTreeNodeString(name,
											domNode.getAttribute("value"),
											domNode.getAttribute("subtype"),
											(domNode.getAttribute("specialized") == '1'));
		}
		
		if (node) {
			parentAttNode.addChild(name,node);
		}
	}
	
	this.getXMLFromAttributeTree = function(attributeTree) {
		
		//Create the XML document
		var xmlDoc;
		// code for IE
		if (window.ActiveXObject)
		{
			xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
		}
		// code for Mozilla, Firefox, Opera, etc.
		else if (document.implementation && document.implementation.createDocument)
		{
			xmlDoc=document.implementation.createDocument("","",null);
		}
		
		//Create the root nodes;
		
		var admin = xmlDoc.createElement("admin");
		admin.setAttribute("version","1");
		
		var rootFolder = createXMLNode(xmlDoc, attributeTree.getRoot()); 
		
		admin.appendChild(rootFolder);
		
		xmlDoc.appendChild(admin);
		
		return xmlDoc;
	}
	
	function createXMLNode(doc, attTreeNode) {
	
		var node = doc.createElement("node");
		node.setAttribute("type",attTreeNode.type);
		node.setAttribute("name",attTreeNode.name);

		if (attTreeNode.type == "folder") {
		
			var children = attTreeNode.getChildren();
			for (var i = 0; i < children.length; i++)
				node.appendChild(createXMLNode(doc, children[i]));
			
		} else if (attTreeNode.type == "int") {
			node.setAttribute("subtype",attTreeNode.subType);
			node.setAttribute("specialized",(attTreeNode.specialized)? "1" : "0");
			node.setAttribute("value",attTreeNode.value);
			
		} else if (attTreeNode.type == "string") {
			node.setAttribute("subtype",attTreeNode.subType);
			node.setAttribute("specialized",(attTreeNode.specialized)? "1" : "0");
			node.setAttribute("value",attTreeNode.value);
		
		}
		
		return node;
	
	}

}