| /******************************************************************************* |
| * Copyright (c) 2013 Tasktop Technologies and others. |
| * 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: |
| * Tasktop Technologies - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.mylyn.reviews.core.spi.remote.emf; |
| |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.emf.ecore.EObject; |
| |
| /** |
| * A concrete implementation of {@link IRemoteEmfObserver}, providing a number of convenience methods for managing |
| * consumer interaction with observers. |
| * |
| * @author Miles Parker |
| */ |
| public class RemoteEmfObserver<EParentObjectType extends EObject, EObjectType, LocalKeyType, ObjectCurrentType> |
| implements IRemoteEmfObserver<EParentObjectType, EObjectType, LocalKeyType, ObjectCurrentType> { |
| |
| RemoteEmfConsumer<EParentObjectType, EObjectType, LocalKeyType, ?, ?, ObjectCurrentType> consumer; |
| |
| /** |
| * Constructs an observer that listens to the supplied consumer. |
| * |
| * @param consumer |
| */ |
| public RemoteEmfObserver( |
| RemoteEmfConsumer<EParentObjectType, EObjectType, LocalKeyType, ?, ?, ObjectCurrentType> consumer) { |
| setConsumer(consumer); |
| } |
| |
| /** |
| * Constructs an observer. |
| */ |
| public RemoteEmfObserver() { |
| } |
| |
| public void created(EParentObjectType parentObject, EObjectType modelObject) { |
| } |
| |
| public void updating(EParentObjectType parent, EObjectType object) { |
| } |
| |
| public void updated(EParentObjectType parentObject, EObjectType modelObject, boolean modified) { |
| } |
| |
| public void sent(EParentObjectType parentObject, EObjectType modelObject) { |
| } |
| |
| public void sending(EParentObjectType parentObject, EObjectType modelObject) { |
| } |
| |
| public void failed(EParentObjectType parentObject, EObjectType modelObject, IStatus status) { |
| } |
| |
| /** |
| * Returns the consumer the observer is listening to. This value may be null if the observer was added directly to |
| * the consumer. |
| */ |
| public RemoteEmfConsumer<EParentObjectType, EObjectType, LocalKeyType, ?, ?, ObjectCurrentType> getConsumer() { |
| return consumer; |
| } |
| |
| /** |
| * Sets the consumer for the given observer, adding itself to the supplied consumer and removing it from an existing |
| * consumer if any. This supports reuse of an observer when the underlying model object changes. |
| * |
| * @param consumer |
| */ |
| public void setConsumer( |
| RemoteEmfConsumer<EParentObjectType, EObjectType, LocalKeyType, ?, ?, ObjectCurrentType> consumer) { |
| if (this.consumer != consumer) { |
| consumer.addObserver(this); |
| } |
| } |
| |
| /** |
| * Non-API. Intended for use by consumer only. |
| */ |
| void internalSetConsumer( |
| RemoteEmfConsumer<EParentObjectType, EObjectType, LocalKeyType, ?, ?, ObjectCurrentType> consumer) { |
| this.consumer = consumer; |
| } |
| |
| public void dispose() { |
| if (consumer != null) { |
| consumer.removeObserver(this); |
| } |
| } |
| } |