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Java > Open Source Codes > org > netbeans > modules > java > freeform > LookupMergerImpl


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19
20 package org.netbeans.modules.java.freeform;
21
22 import org.netbeans.api.java.classpath.ClassPath;
23 import org.netbeans.spi.java.classpath.ClassPathProvider;
24 import org.netbeans.spi.project.LookupMerger;
25 import org.openide.filesystems.FileObject;
26 import org.openide.util.Lookup;
27
28 /**
29  * Merges ClassPathProviders.
30  *
31  * @author David Konecny
32  */
33 public class LookupMergerImpl implements LookupMerger<ClassPathProvider> {
34
35     public LookupMergerImpl() {}
36
37     public Class JavaDoc<ClassPathProvider> getMergeableClass() {
38         return ClassPathProvider.class;
39     }
40
41     public ClassPathProvider merge(Lookup lookup) {
42         return new ClassPathProviderImpl(lookup);
43     }
44     
45     private static class ClassPathProviderImpl implements ClassPathProvider {
46         
47         private Lookup lkp;
48         
49         public ClassPathProviderImpl(Lookup lkp) {
50             this.lkp = lkp;
51         }
52         
53         public ClassPath findClassPath(FileObject file, String JavaDoc type) {
54             for (ClassPathProvider cpp : lkp.lookupAll(ClassPathProvider.class)) {
55                 ClassPath cp = cpp.findClassPath(file, type);
56                 if (cp != null) {
57                     return cp;
58                 }
59             }
60             return null;
61         }
62         
63     }
64
65 }
66
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