debug/gui/SingleLeafTreeSelectionModel.java

/*
 * Copyright (c) 1998, 1999, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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/*
 * This source code is provided to illustrate the usage of a given feature
 * or technique and has been deliberately simplified. Additional steps
 * required for a production-quality application, such as security checks,
 * input validation and proper error handling, might not be present in
 * this sample code.
 */


package com.sun.tools.example.debug.gui;

import javax.swing.tree.*;

public class SingleLeafTreeSelectionModel extends DefaultTreeSelectionModel {

    private static final long serialVersionUID = -7849105107888117679L;

    SingleLeafTreeSelectionModel() {
        super();
        selectionMode = SINGLE_TREE_SELECTION;
    }

    @Override
    public void setSelectionPath(TreePath path) {
        if(((TreeNode)(path.getLastPathComponent())).isLeaf()) {
            super.setSelectionPath(path);
        }
    }

    @Override
    public void setSelectionPaths(TreePath[] paths) {
        // Only look at first path, as all others will be
        // ignored anyway in single tree selection mode.
        if(((TreeNode)(paths[0].getLastPathComponent())).isLeaf()) {
            super.setSelectionPaths(paths);
        }
    }

    @Override
    public void addSelectionPath(TreePath path) {
        if(((TreeNode)(path.getLastPathComponent())).isLeaf()) {
            super.setSelectionPath(path);
        }
    }

    @Override
    public void addSelectionPaths(TreePath[] paths) {
        // Only look at first path, as all others will be
        // ignored anyway in single tree selection mode.
        if(((TreeNode)(paths[0].getLastPathComponent())).isLeaf()) {
            super.addSelectionPaths(paths);
        }
    }
}