| /* |
| * Copyright (c) 2011, Rickard Öberg. |
| * Copyright (c) 2012, Niclas Hedhman. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| package org.qi4j.runtime.activation; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.qi4j.api.activation.ActivationEvent; |
| import org.qi4j.api.activation.ActivationEventListener; |
| import org.qi4j.api.activation.ActivationEventListenerRegistration; |
| |
| /** |
| * Internal helper for managing registrations and firing events |
| */ |
| /* package */ class ActivationEventListenerSupport |
| implements ActivationEventListenerRegistration, ActivationEventListener |
| { |
| protected List<ActivationEventListener> listeners = new ArrayList<>(); |
| |
| @Override |
| public void registerActivationEventListener( ActivationEventListener listener ) |
| { |
| List<ActivationEventListener> newListeners = new ArrayList<>(); |
| newListeners.addAll( listeners ); |
| newListeners.add( listener ); |
| listeners = newListeners; |
| } |
| |
| @Override |
| public void deregisterActivationEventListener( ActivationEventListener listener ) |
| { |
| List<ActivationEventListener> newListeners = new ArrayList<>(); |
| newListeners.addAll( listeners ); |
| newListeners.remove( listener ); |
| listeners = newListeners; |
| } |
| |
| /* package */ void fireEvent( ActivationEvent event ) |
| throws Exception |
| { |
| for( ActivationEventListener listener : listeners ) |
| { |
| listener.onEvent( event ); |
| } |
| } |
| |
| @Override |
| public void onEvent( ActivationEvent event ) |
| throws Exception |
| { |
| fireEvent( event ); |
| } |
| } |