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 2003-2007 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.netbeans.modules.search;
043:
044: import java.util.ArrayList;
045: import java.util.Collection;
046: import java.util.Collections;
047: import java.util.List;
048: import javax.swing.BorderFactory;
049: import javax.swing.UIManager;
050: import javax.swing.border.Border;
051: import org.openide.util.Lookup;
052: import org.openidex.search.SearchType;
053:
054: /**
055: *
056: * @author Marian Petras
057: */
058: final class Utils {
059:
060: /**
061: * result of lookup for registered search types
062: *
063: * @see #getSearchTypes
064: */
065: private static Lookup.Result<SearchType> result;
066:
067: private Utils() {
068: }
069:
070: /**
071: * Finds all registered instances of class <code>SearchType</code>.
072: * <p>
073: * When this method is called for the first time, a lookup is performed
074: * and its result stored. Subsequent calls return the remembered result.
075: *
076: * @return result of lookup for instances of class <code>SearchType</code>
077: * @see SearchType
078: */
079: private static Lookup.Result<SearchType> getSearchTypes0() {
080: if (result == null) {
081: result = Lookup.getDefault().lookup(
082: new Lookup.Template<SearchType>(SearchType.class));
083: }
084: return result;
085: }
086:
087: /**
088: * Returns a list of all registered search types.
089: *
090: * @return all instances of {@link SearchType} available via
091: * {@link Lookup}
092: */
093: static Collection<? extends SearchType> getSearchTypes() {
094: return getSearchTypes0().allInstances();
095: }
096:
097: /**
098: * Returns a subclass of <code>SearchType</code>, having the specified name.
099: * A search is performed through all registered instances of
100: * <code>SearchType</code> (in a {@link Lookup Lookup}).
101: *
102: * @param className class name of the requested search type
103: * @return subclass of <code>SearchType</code>, having the specified name;
104: * or <code>null</code> is none was found
105: * @see SearchType
106: */
107: static Class searchTypeForName(String className) {
108: for (Class c : getSearchTypes0().allClasses()) {
109: if (c.getName().equals(className)) {
110: return c;
111: }
112: }
113: return null;
114: }
115:
116: /**
117: * Returns a border for explorer views.
118: *
119: * @return border to be used around explorer views
120: * (<code>BeanTreeView</code>, <code>TreeTableView</code>,
121: * <code>ListView</code>).
122: */
123: static final Border getExplorerViewBorder() {
124: Border border;
125: border = (Border) UIManager.get("Nb.ScrollPane.border"); //NOI18N
126: if (border == null) {
127: border = BorderFactory.createEtchedBorder();
128: }
129: return border;
130: }
131:
132: /**
133: * Clones a list of <code>SearchType</code>s.
134: *
135: * @param searchTypes list of search types to be cloned
136: * @return deep copy of the given list of <code>SearchTypes</code>s
137: */
138: static List<SearchType> cloneSearchTypes(
139: Collection<? extends SearchType> searchTypes) {
140: if (searchTypes.isEmpty()) {
141: return Collections.<SearchType> emptyList();
142: }
143:
144: List<SearchType> clonedSearchTypes = new ArrayList<SearchType>(
145: searchTypes.size());
146: for (SearchType searchType : searchTypes) {
147: clonedSearchTypes.add((SearchType) searchType.clone());
148: }
149: return clonedSearchTypes;
150: }
151:
152: }
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