com.liferay.portal.kernel.util.TreeNode Maven / Gradle / Ivy

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Contains interfaces for the portal services. Interfaces are only loaded by the global class loader and are shared by all plugins.

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/**
 * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portal.kernel.util;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Shuyang Zhou
 * @author Dennis Ju
 * @author Brian Wing Shun Chan
 */
public class TreeNode> {

	public TreeNode(T value) {
		this(value, null);
	}

	public TreeNode(T value, TreeNode parentNode) {
		this(value, parentNode, new ArrayList>());
	}

	public TreeNode(
		T value, TreeNode parentNode, List> childNodes) {

		_value = value;
		_parentNode = parentNode;
		_childNodes = childNodes;
	}

	public TreeNode addChildNode(T value) {
		TreeNode childNode = new TreeNode(value, this);

		_childNodes.add(childNode);

		return childNode;
	}

	public List> getChildNodes() {
		return _childNodes;
	}

	public List getChildValues() {
		List values = new ArrayList(_childNodes.size());

		for (TreeNode childNode : _childNodes) {
			values.add(childNode.getValue());
		}

		return values;
	}

	public TreeNode getParentNode() {
		return _parentNode;
	}

	public T getValue() {
		return _value;
	}

	public boolean isRootNode() {
		if (_parentNode == null) {
			return true;
		}
		else {
			return false;
		}
	}

	private final List> _childNodes;
	private final TreeNode _parentNode;
	private final T _value;

}