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:
42: package org.netbeans.modules.tasklist.trampoline;
43:
44: import java.util.Iterator;
45: import java.util.NoSuchElementException;
46: import org.netbeans.spi.tasklist.TaskScanningScope;
47: import org.openide.filesystems.FileObject;
48: import org.openide.util.Lookup;
49:
50: /**
51: * Task scanning scope that has no files/folders.
52: *
53: * @author S. Aubrecht
54: */
55: class EmptyScanningScope extends TaskScanningScope {
56:
57: private final Iterator<FileObject> emptyIterator = new Iterator<FileObject>() {
58: public boolean hasNext() {
59: return false;
60: }
61:
62: public FileObject next() {
63: throw new NoSuchElementException();
64: }
65:
66: public void remove() {
67: throw new UnsupportedOperationException();
68: }
69: };
70:
71: /** Creates a new instance of EmptyScanningScope */
72: public EmptyScanningScope() {
73: super (null, null, null);
74: }
75:
76: public boolean isInScope(FileObject resource) {
77: return false;
78: }
79:
80: public void attach(Callback callback) {
81: //do nothing
82: }
83:
84: public Lookup getLookup() {
85: return Lookup.EMPTY;
86: }
87:
88: public Iterator<FileObject> iterator() {
89: return emptyIterator;
90: }
91: }
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