001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 2004-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package org.openidex.search;
043:
044: import java.util.Arrays;
045: import java.util.Collections;
046: import java.util.Iterator;
047: import org.openide.filesystems.FileObject;
048: import org.openide.loaders.DataFolder;
049: import org.openide.loaders.DataObject;
050:
051: /**
052: *
053: * @author Marian Petras
054: */
055: class SimpleSearchInfo implements SearchInfo {
056:
057: /**
058: * Empty search info object.
059: * Its method {@link SearchInfo#canSearch canSearch()}
060: * always returns <code>true</code>. Its iterator
061: * (returned by method
062: * {@link SearchInfo#objectsToSearch objectsToSearch()}) has no elements.
063: */
064: static final SearchInfo EMPTY_SEARCH_INFO = new SearchInfo() {
065: public boolean canSearch() {
066: return true;
067: }
068:
069: public Iterator<DataObject> objectsToSearch() {
070: return Collections.<DataObject> emptyList().iterator();
071: }
072: };
073:
074: /** */
075: private final DataFolder rootFolder;
076: /** */
077: private final boolean recursive;
078: /** */
079: private final FileObjectFilter[] filters;
080:
081: /**
082: * Creates a new instance of SimpleSearchInfo
083: *
084: * @param folder <!-- PENDING -->
085: * @param filters <!-- PENDING, accepts null -->
086: * @exception java.lang.IllegalArgumentException
087: * if the <code>folder</code> argument is <code>null</code>
088: */
089: SimpleSearchInfo(DataFolder folder, boolean recursive,
090: FileObjectFilter[] filters) {
091: if (folder == null) {
092: throw new IllegalArgumentException();
093: }
094:
095: if ((filters != null) && (filters.length == 0)) {
096: filters = null;
097: }
098: this .rootFolder = folder;
099: this .recursive = recursive;
100: this .filters = filters;
101: }
102:
103: /**
104: */
105: public boolean canSearch() {
106: return (filters != null) ? checkFolderAgainstFilters(rootFolder
107: .getPrimaryFile()) : true;
108: }
109:
110: /**
111: */
112: public Iterator<DataObject> objectsToSearch() {
113: return new SimpleSearchIterator(rootFolder, recursive,
114: filters != null ? Arrays.asList(filters) : null);
115: }
116:
117: /**
118: */
119: private boolean checkFolderAgainstFilters(final FileObject folder) {
120: assert folder.isFolder();
121:
122: for (int i = 0; i < filters.length; i++) {
123: if (filters[i].traverseFolder(folder) == FileObjectFilter.DO_NOT_TRAVERSE) {
124: return false;
125: }
126: }
127: return true;
128: }
129:
130: }
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