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/*****************************************************************************
* Copyright (c) 2016 CEA LIST and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.types.core.notification;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.papyrus.infra.types.core.notification.events.ITypesEvent;
/**
* Singleton used to register eventsChains listeners ({@link ITypesEventsChainListener})
*/
public class TypesListenersRegistry {
private static Set<ITypesEventsChainListener> eventChainListeners = null;
private static Set<ITypesEventsListener> eventListeners = null;
private static TypesListenersRegistry instance = null;
private TypesListenersRegistry() {
}
public static synchronized TypesListenersRegistry getInstance() {
if (instance == null) {
instance = new TypesListenersRegistry();
init();
}
return instance;
}
public static void init() {
eventChainListeners = new HashSet<ITypesEventsChainListener>();
eventListeners = new HashSet<ITypesEventsListener>();
}
public void addEventChainListener(ITypesEventsChainListener listener) {
eventChainListeners.add(listener);
}
public void removeEventChainListener(ITypesEventsChainListener listener) {
eventChainListeners.remove(listener);
}
public void addEventListener(ITypesEventsListener listener) {
eventListeners.add(listener);
}
public void removeEventChainListener(ITypesEventsListener listener) {
eventListeners.remove(listener);
}
public void notifyChain(TypesEventsChain chain) {
for (ITypesEventsChainListener eventsChainListener : eventChainListeners) {
eventsChainListener.notifyChain(chain);
}
}
public void notifyEvent(ITypesEvent event) {
for (ITypesEventsListener eventsListener : eventListeners) {
eventsListener.notifyEvent(event);
}
}
}
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