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alexandre_ |
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/*
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Copyright (c) 2004-2006, The Dojo Foundation
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All Rights Reserved.
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Licensed under the Academic Free License version 2.1 or above OR the
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modified BSD license. For more information on Dojo licensing, see:
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http://dojotoolkit.org/community/licensing.shtml
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*/
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dojo.provide("dojo.widget.TreeCommon");
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dojo.require("dojo.widget.*");
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dojo.declare("dojo.widget.TreeCommon", null, {listenTreeEvents:[], listenedTrees:{}, listenNodeFilter:null, listenTree:function (tree) {
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var _this = this;
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if (this.listenedTrees[tree.widgetId]) {
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return;
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}
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dojo.lang.forEach(this.listenTreeEvents, function (event) {
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var eventHandler = "on" + event.charAt(0).toUpperCase() + event.substr(1);
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dojo.event.topic.subscribe(tree.eventNames[event], _this, eventHandler);
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});
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var filter;
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if (this.listenNodeFilter) {
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this.processDescendants(tree, this.listenNodeFilter, this.listenNode, true);
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}
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this.listenedTrees[tree.widgetId] = true;
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}, listenNode:function () {
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}, unlistenNode:function () {
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}, unlistenTree:function (tree, nodeFilter) {
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var _this = this;
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if (!this.listenedTrees[tree.widgetId]) {
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return;
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}
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dojo.lang.forEach(this.listenTreeEvents, function (event) {
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var eventHandler = "on" + event.charAt(0).toUpperCase() + event.substr(1);
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dojo.event.topic.unsubscribe(tree.eventNames[event], _this, eventHandler);
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});
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if (this.listenNodeFilter) {
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this.processDescendants(tree, this.listenNodeFilter, this.unlistenNode, true);
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}
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delete this.listenedTrees[tree.widgetId];
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}, checkPathCondition:function (domElement, condition) {
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while (domElement && !domElement.widgetId) {
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if (condition.call(null, domElement)) {
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return true;
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}
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domElement = domElement.parentNode;
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}
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return false;
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}, domElement2TreeNode:function (domElement) {
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while (domElement && !domElement.widgetId) {
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domElement = domElement.parentNode;
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}
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if (!domElement) {
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return null;
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}
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var widget = dojo.widget.byId(domElement.widgetId);
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if (!widget.isTreeNode) {
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return null;
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}
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return widget;
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}, processDescendants:function (elem, filter, func, skipFirst) {
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var _this = this;
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if (!skipFirst) {
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if (!filter.call(_this, elem)) {
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return;
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}
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func.call(_this, elem);
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}
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var stack = [elem];
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while (elem = stack.pop()) {
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dojo.lang.forEach(elem.children, function (elem) {
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if (filter.call(_this, elem)) {
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func.call(_this, elem);
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stack.push(elem);
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}
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});
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}
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}});
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