/*
* Copyright (c) 2009, SQL Power Group Inc.
*
* This file is part of SQL Power Library.
*
* SQL Power Library is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* SQL Power 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package ca.sqlpower.swingui;
import java.awt.event.ActionEvent;
import java.util.Collections;
import java.util.Comparator;
import java.util.Enumeration;
import java.util.List;
import javax.swing.AbstractAction;
import javax.swing.JTree;
import javax.swing.tree.TreePath;
/**
* An action for collapsing all the descendants of the selected path in a JTree.
*/
public class JTreeCollapseAllAction extends AbstractAction {
private final JTree tree;
public JTreeCollapseAllAction(JTree tree, String text) {
super(text);
this.tree = tree;
}
public void actionPerformed(ActionEvent e) {
TreePath selected = tree.getSelectionPath();
Enumeration<TreePath> descendants = tree.getExpandedDescendants(selected);
if (descendants == null) return;
List<TreePath> paths = Collections.list(descendants);
// Sort required to make sure the parent is collapsed after child.
Collections.sort(paths, new Comparator<TreePath>(){
public int compare(TreePath o1, TreePath o2) {
return o2.getPathCount() - o1.getPathCount();
}
});
for (TreePath path : paths) {
tree.collapsePath(path);
}
tree.collapsePath(selected);
}
}