001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package org.netbeans.modules.debugger.jpda.ui.models;
043:
044: import java.util.Set;
045: import org.netbeans.api.debugger.jpda.JPDAThread;
046: import org.netbeans.api.debugger.jpda.JPDAThreadGroup;
047: import org.netbeans.spi.viewmodel.TreeExpansionModel;
048: import org.netbeans.spi.viewmodel.UnknownTypeException;
049: import org.openide.util.WeakSet;
050:
051: /**
052: * @author Jan Jancura
053: */
054: public class ThreadsTreeExpansionModel implements TreeExpansionModel {
055:
056: private Set expandedNodes = new WeakSet();
057: private Set collapsedNodes = new WeakSet();
058:
059: /**
060: * Defines default state (collapsed, expanded) of given node.
061: *
062: * @param node a node
063: * @return default state (collapsed, expanded) of given node
064: */
065: public boolean isExpanded(Object node) throws UnknownTypeException {
066: synchronized (this ) {
067: if (expandedNodes.contains(node)) {
068: return true;
069: }
070: if (collapsedNodes.contains(node)) {
071: return false;
072: }
073: }
074: // Default behavior follows:
075: if (node instanceof MonitorModel.ThreadWithBordel)
076: return false;
077: if (node instanceof JPDAThreadGroup)
078: return true;
079: if (node instanceof JPDAThread)
080: return false;
081: throw new UnknownTypeException(node);
082: }
083:
084: /**
085: * Called when given node is expanded.
086: *
087: * @param node a expanded node
088: */
089: public void nodeExpanded(Object node) {
090: synchronized (this ) {
091: expandedNodes.add(node);
092: collapsedNodes.remove(node);
093: }
094: }
095:
096: /**
097: * Called when given node is collapsed.
098: *
099: * @param node a collapsed node
100: */
101: public void nodeCollapsed(Object node) {
102: synchronized (this) {
103: collapsedNodes.add(node);
104: expandedNodes.remove(node);
105: }
106: }
107: }
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