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
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40: */
41: package org.netbeans.modules.visualweb.project.jsf.services;
42:
43: import org.netbeans.api.project.Project;
44: import org.openide.util.Lookup;
45:
46: /**
47: * <p>
48: * This interface provides a service to refresh web pages in the
49: * project when a new theme is chosen.
50: *
51: * @author Tor Norbye
52: */
53: public abstract class RefreshService {
54: private static RefreshService service; // TODO Use weak reference?
55:
56: /** Creates a new instance of RefreshService */
57: protected RefreshService() {
58: }
59:
60: /**
61: * Refresh the pages in the given project such that new themes take effect
62: * @param project The project which should be refreshed
63: */
64: public abstract void refresh(Project project);
65:
66: /** Obtain a default instance of the RefreshService */
67: public static RefreshService getDefault() {
68: // The service has no state so doesn't need to be a singleton. Therefore,
69: // I won't bother with synchronization since getDefault may be called a lot.
70: if (service == null) {
71: // Add the import items to the menu
72: Lookup l = Lookup.getDefault();
73: service = (RefreshService) l.lookup(RefreshService.class);
74: }
75:
76: return service;
77: }
78: }
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