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.openide.explorer;
043:
044: import java.util.Map;
045: import java.util.WeakHashMap;
046:
047: /** A temporary workaround for issue 38132, getBeans returns null on
048: * TreeTableView. A better solution will be used for the TTV rewrite.
049: * <P>
050: * What it does:
051: * TableSheetCell calls TTVEnvBridge.getInstance(this), and calls
052: * setCurrentBeans with the node being rendered/edited.
053: * Then it puts itself as a client property of the PropertyPanel it is
054: * using to render.
055: * <P>
056: * On PropertyPanel.setProperty(), the PropertyPanel checks itself for this
057: * client property, and if it's there, calls findInstance to fetch the
058: * TTVEnvBridge instance, calls getCurrentBeans() and puts the result into
059: * a private field accessible via a package private method. It then calls
060: * TTVEnvBridge.clear() to remove references to the node.
061: * <P>
062: * If an editor component embedded in a PropertyPanel (EditablePropertyDisplayer)
063: * finds it is dealing with an ExPropertyEditor, it calls
064: * EditablePropertyDisplayer.findBeans(this). That method first checks if the
065: * property model is non-null, and if it is, checks a world of permutations of
066: * PropertyModel that have various ways of locating their beans. If there is
067: * no property model, then it checks if its parent is a PropertyPanel. If it
068: * is, it calls getBeans() on that.
069: * <P>
070: * If a renderer component embedded in a PropertyPanel (RendererPropertyDisplayer)
071: * finds it is dealing with an ExPropertyEditor, it calls
072: * EditablePropertyDisplayer.findBeans(this), as described above, from its
073: * paintComponent() method, before it calls RendererFactory.getRenderer(getProperty()).
074: * Then it sets the field ReusablePropertyEnv.NODE to the value returned by
075: * findBeans(), since there is a shared instance of ReusablePropertyEnv which
076: * is the PropertyEnv for all properties when they are renderered (for performance
077: * reasons).
078: * <P>
079: * Note: As far as is known, the TaskList module is the only module that has
080: * ever used PropertyEnv.getBeans(). It should be deprecated, along with
081: * PropertyEnv, in a future release.
082: *
083: * @author Tim Boudreau
084: */
085: public class TTVEnvBridge {
086: private static Map<Object, TTVEnvBridge> bridges = new WeakHashMap<Object, TTVEnvBridge>();
087: Object[] beans = null;
088:
089: /** Creates a new instance of TTVEnvBridge */
090: private TTVEnvBridge() {
091: }
092:
093: public static TTVEnvBridge getInstance(Object identifier) {
094: TTVEnvBridge result = bridges.get(identifier);
095: if (result == null) {
096: result = new TTVEnvBridge();
097: bridges.put(identifier, result);
098: }
099: return result;
100: }
101:
102: public static TTVEnvBridge findInstance(Object identifier) {
103: return bridges.get(identifier);
104: }
105:
106: public void setCurrentBeans(Object[] o) {
107: beans = o;
108: }
109:
110: public void clear() {
111: beans = null;
112: }
113:
114: public Object[] getCurrentBeans() {
115: if (beans == null) {
116: return new Object[0];
117: } else {
118: return beans;
119: }
120: }
121: }
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