/*	Copyright (c) 2004-2006, The Dojo Foundation	All Rights Reserved.	Licensed under the Academic Free License version 2.1 or above OR the	modified BSD license. For more information on Dojo licensing, see:		http://dojotoolkit.org/community/licensing.shtml*//** * Additional tree utils * */dojo.provide("dojo.widget.TreeControllerExtension");dojo.widget.TreeControllerExtension = function() { }dojo.lang.extend(dojo.widget.TreeControllerExtension, {	saveExpandedIndices: function(node, field) {		var obj = {};		for(var i=0; i<node.children.length; i++) {			if (node.children[i].isExpanded) {				var key = dojo.lang.isUndefined(field) ? i : node.children[i][field];				obj[key] = this.saveExpandedIndices(node.children[i], field);			}		}		return obj;	},	restoreExpandedIndices: function(node, savedIndices, field) {		var _this = this;		var handler = function(node, savedIndices) {			this.node = node; //.children[i];			this.savedIndices = savedIndices; //[i];			// recursively read next savedIndices level and apply to opened node			this.process = function() {				//dojo.debug("Callback applied for "+this.node);				_this.restoreExpandedIndices(this.node, this.savedIndices, field);			};		}		for(var i=0; i<node.children.length; i++) {			var child = node.children[i];			var found = false;			var key = -1;			//dojo.debug("Check "+child)			// process field set case			if (dojo.lang.isUndefined(field) && savedIndices[i]) {				found = true;				key = i;			}			// process case when field is not set			if (field) {				for(var key in savedIndices) {					//dojo.debug("Compare "+key+" "+child[field])					if (key == child[field]) {						found = true;						break;					}				}			}			// if we found anything - expand it			if (found) {				//dojo.debug("Found at "+key)				var h = new handler(child, savedIndices[key]);				_this.expand(child, false, h, h.process);			} else if (child.isExpanded) { // not found, so collapse				//dojo.debug("Collapsing all descendants "+node.children[i])				dojo.lang.forEach(child.getDescendants(), function(elem) { _this.collapse(elem); });				//this.collapse(node.children[i]);			}		}	}});