| /* |
| * Copyright (c) 2000, 2001, 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. |
| * |
| * 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 |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.ui.tree; |
| |
| import java.util.*; |
| import javax.swing.*; |
| import javax.swing.event.*; |
| import javax.swing.tree.*; |
| |
| /** A very simple tree model which allows the root to be set, so we |
| can reuse the same model for various types of data; the |
| specialization is contained within the nodes. This tree model |
| operates on SimpleTreeNodes. */ |
| |
| public class SimpleTreeModel implements TreeModel { |
| private static final SimpleTreeNode singletonNullRoot = new SimpleTreeNode() { |
| public int getChildCount() { return 0; } |
| public SimpleTreeNode getChild(int index) { return null; } |
| public boolean isLeaf() { return true; } |
| public int getIndexOfChild(SimpleTreeNode child) { return 0; } |
| public String toString() { return ""; } |
| public String getName() { return toString(); } |
| public String getValue() { return toString(); } |
| }; |
| private SimpleTreeNode root = singletonNullRoot; |
| /** List<TreeModelListener> */ |
| private List listeners = new ArrayList(); |
| |
| public void setRoot(SimpleTreeNode node) { |
| if (node != null) { |
| root = node; |
| } else { |
| root = singletonNullRoot; |
| } |
| fireTreeStructureChanged(); |
| } |
| |
| public Object getRoot() { |
| return root; |
| } |
| |
| public Object getChild(Object parent, int index) { |
| return ((SimpleTreeNode) parent).getChild(index); |
| } |
| |
| public int getChildCount(Object parent) { |
| return ((SimpleTreeNode) parent).getChildCount(); |
| } |
| |
| public boolean isLeaf(Object node) { |
| if (node == null) { |
| return true; |
| } |
| return ((SimpleTreeNode) node).isLeaf(); |
| } |
| |
| /** Unsupported operation */ |
| public void valueForPathChanged(TreePath path, Object newValue) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| public int getIndexOfChild(Object parent, Object child) { |
| return ((SimpleTreeNode) parent).getIndexOfChild((SimpleTreeNode) child); |
| } |
| |
| public void addTreeModelListener(TreeModelListener l) { |
| listeners.add(l); |
| } |
| |
| public void removeTreeModelListener(TreeModelListener l) { |
| listeners.remove(l); |
| } |
| |
| public void fireTreeStructureChanged() { |
| TreeModelEvent e = new TreeModelEvent(getRoot(), new Object[] { getRoot() }, null, null); |
| for (Iterator iter = listeners.iterator(); iter.hasNext(); ) { |
| TreeModelListener l = (TreeModelListener) iter.next(); |
| l.treeStructureChanged(e); |
| } |
| } |
| } |