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 1997-2006 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.editor.lib;
043:
044: import java.net.URL;
045: import java.util.Collection;
046: import javax.swing.text.JTextComponent;
047: import org.openide.util.Lookup;
048:
049: /**
050: *
051: * @author Vita Stejskal
052: */
053: public abstract class URLMapper {
054:
055: public static JTextComponent findTextComponenet(URL url) {
056: synchronized (LOCK) {
057: Collection<? extends URLMapper> mappers = getMappers();
058: for (URLMapper m : mappers) {
059: JTextComponent jtc = m.getTextComponent(url);
060: if (jtc != null) {
061: return jtc;
062: }
063: }
064: return null;
065: }
066: }
067:
068: public static URL findUrl(JTextComponent component) {
069: synchronized (LOCK) {
070: Collection<? extends URLMapper> mappers = getMappers();
071: for (URLMapper m : mappers) {
072: URL url = m.getUrl(component);
073: if (url != null) {
074: return url;
075: }
076: }
077: return null;
078: }
079: }
080:
081: // ----------------------------------------------
082: // Abstract URLMapper
083: // ----------------------------------------------
084:
085: protected URLMapper() {
086: }
087:
088: protected abstract JTextComponent getTextComponent(URL url);
089:
090: protected abstract URL getUrl(JTextComponent url);
091:
092: // ----------------------------------------------
093: // Private implementation
094: // ----------------------------------------------
095:
096: private static final String LOCK = new String("URLMapper.LOCK"); //NOI18N
097: private static Lookup.Result<URLMapper> mappers = null;
098:
099: private static Collection<? extends URLMapper> getMappers() {
100: if (mappers == null) {
101: mappers = Lookup.getDefault().lookup(
102: new Lookup.Template<URLMapper>(URLMapper.class));
103: }
104: return mappers.allInstances();
105: }
106: }
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