108 lines
2.9 KiB
JavaScript
108 lines
2.9 KiB
JavaScript
// Copyright 2007 The Closure Library Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS-IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* @fileoverview Definition of the goog.ui.tree.TreeNode class.
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*
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* @author arv@google.com (Erik Arvidsson)
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* @author eae@google.com (Emil A Eklund)
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* @author jonp@google.com (Jon Perlow)
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*
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* This is a based on the webfx tree control. See file comment in
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* treecontrol.js.
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*/
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goog.provide('goog.ui.tree.TreeNode');
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goog.require('goog.ui.tree.BaseNode');
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/**
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* A single node in the tree.
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* @param {string} html The html content of the node label.
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* @param {Object=} opt_config The configuration for the tree. See
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* goog.ui.tree.TreeControl.defaultConfig. If not specified, a default config
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* will be used.
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* @param {goog.dom.DomHelper=} opt_domHelper Optional DOM helper.
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* @constructor
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* @extends {goog.ui.tree.BaseNode}
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*/
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goog.ui.tree.TreeNode = function(html, opt_config, opt_domHelper) {
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goog.ui.tree.BaseNode.call(this, html, opt_config, opt_domHelper);
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};
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goog.inherits(goog.ui.tree.TreeNode, goog.ui.tree.BaseNode);
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/**
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* The tree the item is in. Cached on demand from the parent.
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* @type {goog.ui.tree.TreeControl?}
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* @private
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*/
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goog.ui.tree.TreeNode.prototype.tree_ = null;
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/**
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* Returns the tree.
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* @return {goog.ui.tree.TreeControl?} The tree.
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* @override
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*/
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goog.ui.tree.TreeNode.prototype.getTree = function() {
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if (this.tree_) {
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return this.tree_;
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}
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var parent = this.getParent();
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if (parent) {
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var tree = parent.getTree();
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if (tree) {
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this.setTreeInternal(tree);
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return tree;
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}
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}
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return null;
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};
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/**
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* Returns the source for the icon.
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* @return {string} Src for the icon.
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* @override
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*/
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goog.ui.tree.TreeNode.prototype.getCalculatedIconClass = function() {
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var expanded = this.getExpanded();
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if (expanded && this.expandedIconClass_) {
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return this.expandedIconClass_;
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}
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if (!expanded && this.iconClass_) {
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return this.iconClass_;
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}
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// fall back on default icons
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var config = this.getConfig();
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if (this.hasChildren()) {
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if (expanded && config.cssExpandedFolderIcon) {
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return config.cssTreeIcon + ' ' +
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config.cssExpandedFolderIcon;
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} else if (!expanded && config.cssCollapsedFolderIcon) {
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return config.cssTreeIcon + ' ' +
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config.cssCollapsedFolderIcon;
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}
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} else {
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if (config.cssFileIcon) {
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return config.cssTreeIcon + ' ' + config.cssFileIcon;
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}
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}
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return '';
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};
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