package org.jtheque.errors.impl; /* * Copyright JTheque (Baptiste Wicht) * * 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. */ import org.jtheque.errors.Error; import org.jtheque.errors.ErrorListener; import org.jtheque.errors.ErrorService; import org.jtheque.utils.annotations.GuardedInternally; import org.jtheque.utils.annotations.ThreadSafe; import org.jtheque.utils.collections.CollectionUtils; import org.jtheque.utils.collections.WeakEventListenerList; import java.util.Collection; /** * An error service implementation. * * @author Baptiste Wicht */ @ThreadSafe public final class ErrorServiceImpl implements ErrorService { @GuardedInternally private final Collection<Error> errors = CollectionUtils.newConcurrentList(); @GuardedInternally private final WeakEventListenerList<ErrorListener> listeners = WeakEventListenerList.create(); @Override public Collection<Error> getErrors() { return CollectionUtils.protect(errors); } @Override public void addError(org.jtheque.errors.Error error) { errors.add(error); fireErrorOccurred(error); } @Override public void addErrorListener(ErrorListener listener) { listeners.add(listener); } @Override public void removeErrorListener(ErrorListener listener) { listeners.remove(listener); } /** * Fire an error occurred event. * * @param error The new error. */ private void fireErrorOccurred(Error error) { for (ErrorListener listener : listeners) { listener.errorOccurred(error); } } }