diff --git a/org.eclipse.jgit.test/META-INF/MANIFEST.MF b/org.eclipse.jgit.test/META-INF/MANIFEST.MF index d6128afc9..ed414d3bb 100644 --- a/org.eclipse.jgit.test/META-INF/MANIFEST.MF +++ b/org.eclipse.jgit.test/META-INF/MANIFEST.MF @@ -9,13 +9,14 @@ Bundle-ActivationPolicy: lazy Bundle-RequiredExecutionEnvironment: J2SE-1.5 Import-Package: junit.framework;version="[3.8.2,4.0.0)", junit.textui;version="[3.8.2,4.0.0)", - org.eclipse.jgit.api;version="[0.9.0,0.10.0)", org.eclipse.jgit;version="[0.9.0,0.10.0)", + org.eclipse.jgit.api;version="[0.9.0,0.10.0)", org.eclipse.jgit.awtui;version="[0.9.0,0.10.0)", org.eclipse.jgit.console;version="[0.9.0,0.10.0)", org.eclipse.jgit.diff;version="[0.9.0,0.10.0)", org.eclipse.jgit.dircache;version="[0.9.0,0.10.0)", org.eclipse.jgit.errors;version="[0.9.0,0.10.0)", + org.eclipse.jgit.events;version="[0.9.0,0.10.0)", org.eclipse.jgit.fnmatch;version="[0.9.0,0.10.0)", org.eclipse.jgit.http.server;version="[0.9.0,0.10.0)", org.eclipse.jgit.ignore;version="[0.9.0,0.10.0)", diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/events/ConfigChangeEventTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/events/ConfigChangeEventTest.java new file mode 100644 index 000000000..c6bfb19fc --- /dev/null +++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/events/ConfigChangeEventTest.java @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2010, Mathias Kinzler + * and other copyright owners as documented in the project's IP log. + * + * This program and the accompanying materials are made available + * under the terms of the Eclipse Distribution License v1.0 which + * accompanies this distribution, is reproduced below, and is + * available at http://www.eclipse.org/org/documents/edl-v10.php + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * - Neither the name of the Eclipse Foundation, Inc. nor the + * names of its contributors may be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +package org.eclipse.jgit.events; + +import org.eclipse.jgit.lib.RepositoryTestCase; +import org.eclipse.jgit.storage.file.FileBasedConfig; + +public class ConfigChangeEventTest extends RepositoryTestCase { + public void testFileRepository_ChangeEventsOnlyOnSave() throws Exception { + final ConfigChangedEvent[] events = new ConfigChangedEvent[1]; + db.getListenerList().addConfigChangedListener( + new ConfigChangedListener() { + public void onConfigChanged(ConfigChangedEvent event) { + events[0] = event; + } + }); + FileBasedConfig config = db.getConfig(); + assertNull(events[0]); + + // set a value to some arbitrary key + config.setString("test", "section", "event", "value"); + // no changes until we save + assertNull(events[0]); + config.save(); + assertNotNull(events[0]); + // correct repository? + assertEquals(events[0].getRepository(), db); + + // reset for the next test + events[0] = null; + + // unset the value we have just set above + config.unset("test", "section", "event"); + // no changes until we save + assertNull(events[0]); + config.save(); + assertNotNull(events[0]); + // correct repository? + assertEquals(events[0].getRepository(), db); + } +} diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Config.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Config.java index 2e1ab9a07..335cada7a 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Config.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Config.java @@ -1,4 +1,5 @@ /* + * Copyright (C) 2010, Mathias Kinzler * Copyright (C) 2009, Constantine Plotnikov * Copyright (C) 2007, Dave Watson * Copyright (C) 2008-2010, Google Inc. @@ -62,6 +63,10 @@ import java.util.concurrent.atomic.AtomicReference; import org.eclipse.jgit.JGitText; import org.eclipse.jgit.errors.ConfigInvalidException; +import org.eclipse.jgit.events.ConfigChangedEvent; +import org.eclipse.jgit.events.ConfigChangedListener; +import org.eclipse.jgit.events.ListenerHandle; +import org.eclipse.jgit.events.ListenerList; import org.eclipse.jgit.util.StringUtils; @@ -74,6 +79,9 @@ public class Config { private static final long MiB = 1024 * KiB; private static final long GiB = 1024 * MiB; + /** the change listeners */ + private final ListenerList listeners = new ListenerList(); + /** * Immutable current state of the configuration data. *

@@ -450,6 +458,43 @@ public class Config { state.get().cache.remove(parser); } + /** + * Adds a listener to be notified about changes. + *

+ * Clients are supposed to remove the listeners after they are done with + * them using the {@link ListenerHandle#remove()} method + * + * @param listener + * the listener + * @return the handle to the registered listener + */ + public ListenerHandle addChangeListener(ConfigChangedListener listener) { + return listeners.addConfigChangedListener(listener); + } + + /** + * Determine whether to issue change events for transient changes. + *

+ * If true is returned (which is the default behavior), + * {@link #fireConfigChangedEvent()} will be called upon each change. + *

+ * Subclasses that override this to return false are + * responsible for issuing {@link #fireConfigChangedEvent()} calls + * themselves. + * + * @return + */ + protected boolean notifyUponTransientChanges() { + return true; + } + + /** + * Notifies the listeners + */ + protected void fireConfigChangedEvent() { + listeners.dispatch(new ConfigChangedEvent()); + } + private String getRawString(final String section, final String subsection, final String name) { final List lst = getRawStringList(section, subsection, name); @@ -681,6 +726,8 @@ public class Config { src = state.get(); res = replaceStringList(src, section, subsection, name, values); } while (!state.compareAndSet(src, res)); + if (notifyUponTransientChanges()) + fireConfigChangedEvent(); } private State replaceStringList(final State srcState, diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java index 8ffbe80cc..da1f3af60 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java @@ -101,6 +101,12 @@ public class FileBasedConfig extends StoredConfig { this.fs = fs; } + @Override + protected boolean notifyUponTransientChanges() { + // we will notify listeners upon save() + return false; + } + /** @return location of the configuration file on disk */ public final File getFile() { return configFile; @@ -159,6 +165,8 @@ public class FileBasedConfig extends StoredConfig { lf.unlock(); } lastModified = lf.getCommitLastModified(); + // notify the listeners + fireConfigChangedEvent(); } @Override diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileRepository.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileRepository.java index 9ee1e605e..145224807 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileRepository.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileRepository.java @@ -54,6 +54,8 @@ import java.util.Set; import org.eclipse.jgit.JGitText; import org.eclipse.jgit.errors.ConfigInvalidException; +import org.eclipse.jgit.events.ConfigChangedEvent; +import org.eclipse.jgit.events.ConfigChangedListener; import org.eclipse.jgit.lib.BaseRepositoryBuilder; import org.eclipse.jgit.lib.ConfigConstants; import org.eclipse.jgit.lib.Constants; @@ -157,6 +159,12 @@ public class FileRepository extends Repository { loadUserConfig(); loadRepoConfig(); + getConfig().addChangeListener(new ConfigChangedListener() { + public void onConfigChanged(ConfigChangedEvent event) { + fireEvent(event); + } + }); + refs = new RefDirectory(this); objectDatabase = new ObjectDirectory(repoConfig, // options.getObjectDirectory(), //