Java JTree Node isAncestor(final TreeNode node, final TreeNode parent)

Description

Tests whether a given node is an ancestor node of another node.

License

Open Source License

Parameter

Parameter	Description
node	The node to search for.
parent	The parent node where the search begins.

Return

True, if the node is an ancestor of parent. False, otherwise.

Declaration

public static boolean isAncestor(final TreeNode node, final TreeNode parent) 

Method Source Code

//package com.java2s;
/*//from  w w w.  j  a  v a 2s .  co m
Copyright 2015 Google Inc. 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.
*/

import javax.swing.tree.TreeNode;

public class Main {
    /**
     * Tests whether a given node is an ancestor node of another node.
     * 
     * @param node The node to search for.
     * @param parent The parent node where the search begins.
     * 
     * @return True, if the node is an ancestor of parent. False, otherwise.
     */
    public static boolean isAncestor(final TreeNode node, final TreeNode parent) {
        if (parent == node) {
            return true;
        }

        for (int i = 0; i < parent.getChildCount(); i++) {
            if (isAncestor(node, parent.getChildAt(i))) {
                return true;
            }
        }

        return false;
    }
}

Related

1. getSubTree(TreeNode root, String name)
2. hasOnlyLeafs(JTree tree, Object node)
3. initializeExpandedPathsBeforeChange(JTree tree, DefaultMutableTreeNode root)
4. insertNodeInAlphabeticalOrder(DefaultMutableTreeNode childNode, DefaultMutableTreeNode parentNode, DefaultTreeModel model)
5. insertStrAsNodeLexi(DefaultTreeModel treeModel, String child, DefaultMutableTreeNode parent, Boolean childIsFile)
6. isChildNode(DefaultMutableTreeNode parent, DefaultMutableTreeNode child)
7. isMovingUp(DefaultMutableTreeNode ntarget, DefaultMutableTreeNode nsource)
8. isNodeAsStrChild(DefaultMutableTreeNode parent, String child)
9. isNodeOrChildSelected(JTree tree, DefaultMutableTreeNode node)