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 1997-2006 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:
42: package org.netbeans.modules.refactoring.api;
43:
44: import org.openide.util.Lookup;
45: import org.openide.util.Lookup.Result;
46: import org.openide.util.Lookup.Template;
47: import org.openide.util.lookup.AbstractLookup;
48: import org.openide.util.lookup.InstanceContent;
49:
50: /**
51: * Context contains "enviroment" in which the refactoring was invoked
52: * e.g. Java refactoring might put instance of ClasspathInfo here
53: * @see AbstractRefactoring
54: * @author Jan Becicka
55: */
56: public final class Context extends Lookup {
57:
58: private InstanceContent instanceContent;
59: private AbstractLookup delegate;
60:
61: Context(InstanceContent instanceContent) {
62: super ();
63: delegate = new AbstractLookup(instanceContent);
64: this .instanceContent = instanceContent;
65: }
66:
67: /**
68: * Adds value instance into this context
69: * for instance Java impl. puts instance of ClasspathInfo here.
70: * If there is an instance already set for this context, old
71: * value is replaced by new one.
72: */
73: public void add(Object value) {
74: Object old = lookup(value.getClass());
75: if (old != null) {
76: instanceContent.remove(old);
77: }
78: instanceContent.add(value);
79: }
80:
81: public <T> T lookup(Class<T> clazz) {
82: return delegate.lookup(clazz);
83: }
84:
85: public <T> Result<T> lookup(Template<T> template) {
86: return delegate.lookup(template);
87: }
88: }
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