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.lib2;
043:
044: import java.util.Collection;
045: import java.util.ResourceBundle;
046: import java.util.logging.Logger;
047: import javax.swing.Action;
048: import javax.swing.text.JTextComponent;
049: import org.netbeans.spi.editor.EditorImplementationProvider;
050: import org.openide.util.Lookup;
051: import org.openide.util.NbBundle;
052:
053: /** This is provider of implementation. This package (org.netbeans.editor)
054: * represent editor core which can be used independently on the rest of NetBeans.
055: * However this core needs access to higher level functionality like access
056: * to localized bundles, access to settings storage, etc. which can be implemented
057: * differently by the applications which uses this editor core. For this purpose
058: * was created this abstract class and it can be extended with any other methods which
059: * are more and more often required by core editor. Example implementation
060: * of this provider can be found in org.netbeans.modules.editor package
061: *
062: * @author David Konecny
063: * @since 10/2001
064: */
065:
066: public final class EditorImplementation {
067:
068: private static final Logger LOG = Logger
069: .getLogger(EditorImplementation.class.getName());
070: private static final EditorImplementationProvider DEFAULT = new DefaultImplementationProvider();
071:
072: private static EditorImplementation instance = null;
073:
074: private static EditorImplementationProvider externalProvider = null;
075: private Lookup.Result<EditorImplementationProvider> result = null;
076:
077: /** Returns currently registered provider */
078: public static synchronized EditorImplementation getDefault() {
079: if (instance == null) {
080: instance = new EditorImplementation();
081: }
082: return instance;
083: }
084:
085: /**
086: * <p><b>IMPORTANT:</b> This method is here only for supporting the backwards
087: * compatibility of the {@link org.netbeans.editor.DialogSupport} class.
088: *
089: */
090: public void setExternalProvider(
091: EditorImplementationProvider provider) {
092: this .externalProvider = provider;
093: }
094:
095: /** Returns ResourceBundle for the given class.*/
096: public ResourceBundle getResourceBundle(String localizer) {
097: return getProvider().getResourceBundle(localizer);
098: }
099:
100: /** This is temporary method which allows core editor to access
101: * glyph gutter action. These actions are then used when user clicks
102: * on glyph gutter. In next version this should be removed and redesigned
103: * as suggested in issue #16762 */
104: public Action[] getGlyphGutterActions(JTextComponent target) {
105: return getProvider().getGlyphGutterActions(target);
106: }
107:
108: /** Activates the given component or one of its ancestors.
109: * @return whether the component or one of its ancestors was succesfuly activated
110: * */
111: public boolean activateComponent(JTextComponent c) {
112: return getProvider().activateComponent(c);
113: }
114:
115: private EditorImplementation() {
116: result = Lookup.getDefault().lookup(
117: new Lookup.Template<EditorImplementationProvider>(
118: EditorImplementationProvider.class));
119: }
120:
121: private EditorImplementationProvider getProvider() {
122: if (externalProvider != null) {
123: return externalProvider;
124: } else {
125: Collection<? extends EditorImplementationProvider> providers = result
126: .allInstances();
127: if (providers.isEmpty()) {
128: LOG
129: .warning("Can't find any EditorImplementationProvider; using default.");
130: return DEFAULT;
131: } else {
132: return providers.iterator().next();
133: }
134: }
135: }
136:
137: private static final class DefaultImplementationProvider implements
138: EditorImplementationProvider {
139: private static final Action[] NOACTIONS = new Action[0];
140:
141: public ResourceBundle getResourceBundle(String localizer) {
142: return NbBundle.getBundle(localizer);
143: }
144:
145: public Action[] getGlyphGutterActions(JTextComponent target) {
146: return NOACTIONS;
147: }
148:
149: public boolean activateComponent(JTextComponent c) {
150: return false;
151: }
152: } // End of DefaultImplementationProvider class
153: }
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