Java JTree Node collapseSubTree(JTree tree, DefaultMutableTreeNode startNode, DefaultTreeModel model)

Description

Collapse the subtree starting at startNode node

License

Open Source License

Parameter

Parameter	Description
tree	the tree to collapse
startNode	the starting point
model	the tree model

Declaration

private static void collapseSubTree(JTree tree, DefaultMutableTreeNode startNode, DefaultTreeModel model) 

Method Source Code

//package com.java2s;
/*/* w w w .  j av  a 2  s.  com*/
The GUFF - The GNU Ultimate Framework Facility
Copyright (C) Simeosoft di Carlo Simeone
     
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.
     
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

import java.util.Enumeration;

import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;

public class Main {
    /**
     * Collapse the subtree starting at <code>startNode</code> node
     * @param tree the tree to collapse
     * @param startNode the starting point
     * @param model the tree model
     */
    private static void collapseSubTree(JTree tree, DefaultMutableTreeNode startNode, DefaultTreeModel model) {
        if (startNode.isLeaf()) {
            return;
        }
        for (Enumeration e = startNode.children(); e.hasMoreElements();) {
            DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.nextElement();
            collapseSubTree(tree, node, model);
        }
        TreePath tp = new TreePath(model.getPathToRoot(startNode));
        if (tree.isExpanded(tp)) {
            tree.collapsePath(tp);
            // senza questa istruzione, in alcuni casi non riusciamo a riportare
            // lo scrolling ad un nodo espanso
            tree.scrollPathToVisible(tp);
        }
    }
}

Related

1. addChildNode(DefaultMutableTreeNode parent, Object child)
2. addCloneNode(DefaultMutableTreeNode srcNode, DefaultMutableTreeNode root)
3. ApplyFilter(DefaultMutableTreeNode node, String filter)
4. cloneTreeNode(DefaultMutableTreeNode srcNode)
5. contains(final JTree tree, final TreeNode node)
6. copyDMTreeNode(DefaultMutableTreeNode out, DefaultMutableTreeNode in)
7. createFolderNode(Object userObject)
8. createSubTreeIfNecessary(TreeModel model, DefaultMutableTreeNode parent, String childName)