Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/ui/tree/SimpleTreeModel.java @ 3945:8ed53447f690
Merge
author | iveresov |
---|---|
date | Thu, 15 Sep 2011 12:44:09 -0700 |
parents | c18cbe5936b8 |
children |
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/* * 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); } } }