diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/synchronizers/CallbackSynchronizer.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/synchronizers/CallbackSynchronizer.java | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/synchronizers/CallbackSynchronizer.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/synchronizers/CallbackSynchronizer.java deleted file mode 100644 index 029227a8c7..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/synchronizers/CallbackSynchronizer.java +++ /dev/null @@ -1,92 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2009, 2010 Oracle. All rights reserved. - * This program and the accompanying materials are made available under the - * terms of the Eclipse Public License v1.0, which accompanies this distribution - * and is available at http://www.eclipse.org/legal/epl-v10.html. - * - * Contributors: - * Oracle - initial API and implementation - ******************************************************************************/ -package org.eclipse.jpt.common.utility.synchronizers; - -import java.io.Serializable; -import java.util.EventListener; - -/** - * Extend {@link Synchronizer} to notify listeners - * when a synchronization "cycle" is complete; i.e. the synchronization has, - * for the moment, quiesced. - */ -public interface CallbackSynchronizer - extends Synchronizer -{ - /** - * Add the specified listener to be notified whenever the synchronizer has - * quiesced. - * @see #removeListener(Listener) - */ - void addListener(Listener listener); - - /** - * Remove the specified listener. - * @see #addListener(Listener) - */ - void removeListener(Listener listener); - - - // ********** listener ********** - - /** - * Interface implemented by listeners to be notified whenever the - * synchronizer has quiesced. - */ - public interface Listener - extends EventListener - { - /** - * The specified synchronizer has quiesced. - */ - void synchronizationQuiesced(CallbackSynchronizer synchronizer); - } - - - /** - * Singleton implementation of the {@link CallbackSynchronizer} interface that will do - * nothing. - */ - final class Null implements CallbackSynchronizer, Serializable { - public static final CallbackSynchronizer INSTANCE = new Null(); - public static CallbackSynchronizer instance() { - return INSTANCE; - } - // ensure single instance - private Null() { - super(); - } - public void start() { - // do nothing - } - public void synchronize() { - // do nothing - } - public void stop() { - // do nothing - } - public void addListener(Listener listener) { - // do nothing - } - public void removeListener(Listener listener) { - // do nothing - } - @Override - public String toString() { - return "CallbackSynchronizer.Null"; //$NON-NLS-1$ - } - private static final long serialVersionUID = 1L; - private Object readResolve() { - // replace this object with the singleton - return INSTANCE; - } - } - -} |