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