01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common
08: * Development and Distribution License("CDDL") (collectively, the
09: * "License"). You may not use this file except in compliance with the
10: * License. You can obtain a copy of the License at
11: * http://www.netbeans.org/cddl-gplv2.html
12: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
13: * specific language governing permissions and limitations under the
14: * License. When distributing the software, include this License Header
15: * Notice in each file and include the License file at
16: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
17: * particular file as subject to the "Classpath" exception as provided
18: * by Sun in the GPL Version 2 section of the License file that
19: * accompanied this code. If applicable, add the following below the
20: * License Header, with the fields enclosed by brackets [] replaced by
21: * your own identifying information:
22: * "Portions Copyrighted [year] [name of copyright owner]"
23: *
24: * Contributor(s):
25: *
26: * The Original Software is NetBeans. The Initial Developer of the Original
27: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
28: * Microsystems, Inc. All Rights Reserved.
29: *
30: * If you wish your version of this file to be governed by only the CDDL
31: * or only the GPL Version 2, indicate your decision by adding
32: * "[Contributor] elects to include this software in this distribution
33: * under the [CDDL or GPL Version 2] license." If you do not indicate a
34: * single choice of license, a recipient has the option to distribute
35: * your version of this file under either the CDDL, the GPL Version 2 or
36: * to extend the choice of license to its licensees as provided above.
37: * However, if you add GPL Version 2 code and therefore, elected the GPL
38: * Version 2 license, then the option applies only if the new code is
39: * made subject to such option by the copyright holder.
40: */
41: package org.netbeans.modules.compapp.projects.jbi.ui;
42:
43: import java.util.ArrayList;
44: import java.util.Collections;
45: import java.util.List;
46: import org.netbeans.modules.compapp.projects.jbi.api.CompAppProjectActionPerformer;
47: import org.netbeans.modules.compapp.projects.jbi.api.CompAppProjectActionsProvider;
48: import org.openide.util.Lookup;
49: import org.openide.util.LookupEvent;
50: import org.openide.util.LookupListener;
51:
52: /**
53: *
54: * @author gpatil
55: */
56: public class PluggableProjectActionsProvider {
57: private static PluggableProjectActionsProvider instance;
58:
59: private List<CompAppProjectActionPerformer> projActions;
60:
61: public synchronized static PluggableProjectActionsProvider getInstance() {
62: if (instance == null) {
63: instance = new PluggableProjectActionsProvider();
64: }
65: return instance;
66: }
67:
68: private PluggableProjectActionsProvider() {
69: Lookup.Template<CompAppProjectActionsProvider> template = new Lookup.Template<CompAppProjectActionsProvider>(
70: CompAppProjectActionsProvider.class);
71: final Lookup.Result<CompAppProjectActionsProvider> result = Lookup
72: .getDefault().lookup(template);
73: result.addLookupListener(new LookupListener() {
74: public void resultChanged(LookupEvent e) {
75: initialize(result);
76: }
77: });
78: initialize(result);
79: }
80:
81: private synchronized void initialize(
82: Lookup.Result<CompAppProjectActionsProvider> result) {
83: if (projActions == null) {
84: projActions = new ArrayList<CompAppProjectActionPerformer>();
85: }
86:
87: projActions.clear();
88:
89: for (CompAppProjectActionsProvider actProvider : result
90: .allInstances()) {
91: projActions.addAll(actProvider.getProjectActions());
92: }
93: }
94:
95: public synchronized List<CompAppProjectActionPerformer> getProjectActions() {
96: return Collections.unmodifiableList(projActions);
97: }
98:
99: }
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