| /******************************************************************************* |
| * Copyright (c) 2010 Obeo. |
| * 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: |
| * Obeo - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.emf.eef.runtime.api.notify; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.eclipse.emf.common.notify.Notification; |
| import org.eclipse.emf.ecore.EClass; |
| import org.eclipse.emf.ecore.EClassifier; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.EStructuralFeature; |
| import org.eclipse.emf.ecore.resource.ResourceSet; |
| import org.eclipse.emf.ecore.util.EContentAdapter; |
| |
| /** |
| * @author <a href="mailto:goulwen.lefur@obeo.fr">Goulwen Le Fur</a> |
| */ |
| public class ResourceSetAdapter extends EContentAdapter { |
| |
| /** |
| * The eClassifiers listeners. |
| */ |
| private Map<EClassifier, List<PropertiesEditingSemanticListener>> eClassifierListeners; |
| |
| /** |
| * The features listeners. |
| */ |
| private Map<EStructuralFeature, List<PropertiesEditingSemanticListener>> eStructuralFeatureListeners; |
| |
| /** |
| * The resource set we listen to. |
| */ |
| private ResourceSet resourceSet; |
| |
| /** |
| * Constructor. |
| */ |
| public ResourceSetAdapter(ResourceSet resourceSet) { |
| super(); |
| this.resourceSet = resourceSet; |
| eClassifierListeners = new HashMap<EClassifier, List<PropertiesEditingSemanticListener>>(); |
| eStructuralFeatureListeners = new HashMap<EStructuralFeature, List<PropertiesEditingSemanticListener>>(); |
| } |
| |
| /** |
| * Activates the resource set adapter. |
| */ |
| public void activate() { |
| resourceSet.eAdapters().add(this); |
| } |
| |
| |
| /** |
| * Removes the current adapter from the resource set adapters. |
| */ |
| public void deactivate() { |
| resourceSet.eAdapters().remove(this); |
| } |
| |
| /** |
| * Adds the given listener to the registered listeners. |
| * |
| * @param listener |
| * the listener to remove |
| */ |
| public void addEditingSemanticListener(PropertiesEditingSemanticListener listener) { |
| for (NotificationFilter filter : listener.getFilters()) { |
| if (filter instanceof EStructuralFeatureNotificationFilter) { |
| for (EStructuralFeature feature : ((EStructuralFeatureNotificationFilter)filter) |
| .getFeatures()) { |
| addEditingSemanticListener(feature, listener); |
| } |
| } else if (filter instanceof EClassifierNotificationFilter) { |
| for (EClassifier eClassifier : ((EClassifierNotificationFilter)filter).getEClassifiers()) { |
| addEditingSemanticListener(eClassifier, listener); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Adds the given listener to the registered listeners. |
| * |
| * @param feature |
| * the feature key |
| * @param listener |
| * the listener to remove |
| */ |
| private void addEditingSemanticListener(EStructuralFeature feature, |
| PropertiesEditingSemanticListener listener) { |
| List<PropertiesEditingSemanticListener> listeners = eStructuralFeatureListeners.get(feature); |
| if (listeners == null) { |
| listeners = new ArrayList<PropertiesEditingSemanticListener>(); |
| eStructuralFeatureListeners.put(feature, listeners); |
| } |
| listeners.add(listener); |
| } |
| |
| /** |
| * Adds the given listener to the registered listeners. |
| * |
| * @param eClassifier |
| * the eClassifier key |
| * @param listener |
| * the listener to remove |
| */ |
| private void addEditingSemanticListener(EClassifier eClassifier, |
| PropertiesEditingSemanticListener listener) { |
| List<PropertiesEditingSemanticListener> listeners = eClassifierListeners.get(eClassifier); |
| if (listeners == null) { |
| listeners = new ArrayList<PropertiesEditingSemanticListener>(); |
| eClassifierListeners.put(eClassifier, listeners); |
| } |
| listeners.add(listener); |
| } |
| |
| /** |
| * Removes the given listener from the registered listeners. |
| * |
| * @param listener |
| * the listener to remove |
| */ |
| public void removeEditingSemanticListener(PropertiesEditingSemanticListener listener) { |
| for (NotificationFilter filter : listener.getFilters()) { |
| if (filter instanceof EStructuralFeatureNotificationFilter) { |
| for (EStructuralFeature feature : ((EStructuralFeatureNotificationFilter)filter) |
| .getFeatures()) { |
| removeEditingSemanticListener(feature, listener); |
| } |
| } else if (filter instanceof EClassifierNotificationFilter) { |
| for (EClassifier eClassifier : ((EClassifierNotificationFilter)filter).getEClassifiers()) { |
| removeEditingSemanticListener(eClassifier, listener); |
| } |
| } |
| } |
| |
| // if there are no listeners left we remove the adapter |
| if (eClassifierListeners.size() + eStructuralFeatureListeners.size() == 0) |
| deactivate(); |
| } |
| /** |
| * Removes the given listener from the registered listeners. |
| * |
| * @param feature |
| * the feature key |
| * @param listener |
| * the listener to remove |
| */ |
| private void removeEditingSemanticListener(EStructuralFeature feature, |
| PropertiesEditingSemanticListener listener) { |
| List<PropertiesEditingSemanticListener> listeners = eStructuralFeatureListeners.get(feature); |
| if (listeners != null) { |
| listeners.remove(listener); |
| if (listeners.isEmpty()) { |
| eStructuralFeatureListeners.remove(feature); |
| } |
| } |
| } |
| |
| /** |
| * Removes the given listener from the registered listeners. |
| * |
| * @param eClassifier |
| * the classifier key |
| * @param listener |
| * the listener to remove |
| */ |
| private void removeEditingSemanticListener(EClassifier eClassifier, |
| PropertiesEditingSemanticListener listener) { |
| List<PropertiesEditingSemanticListener> listeners = eClassifierListeners.get(eClassifier); |
| if (listeners != null) { |
| listeners.remove(listener); |
| if (listeners.isEmpty()) { |
| eClassifierListeners.remove(eClassifier); |
| } |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @see org.eclipse.emf.ecore.util.EContentAdapter#notifyChanged(org.eclipse.emf.common.notify.Notification) |
| */ |
| public void notifyChanged(Notification notification) { |
| super.notifyChanged(notification); |
| if (notification.getNotifier() instanceof EObject) { |
| EObject notifier = (EObject)notification.getNotifier(); |
| EClass eClass = notifier.eClass(); |
| if (eClassifierListeners.get(eClass) != null) { |
| List<PropertiesEditingSemanticListener> listeners = eClassifierListeners.get(eClass); |
| for (PropertiesEditingSemanticListener listener : new ArrayList<PropertiesEditingSemanticListener>(listeners)) { |
| listener.notifyChanged(notification); |
| } |
| } |
| } |
| if (notification.getFeature() instanceof EStructuralFeature) { |
| EStructuralFeature feature = (EStructuralFeature)notification.getFeature(); |
| if (eStructuralFeatureListeners.get(feature) != null) { |
| List<PropertiesEditingSemanticListener> listeners = eStructuralFeatureListeners.get(feature); |
| for (PropertiesEditingSemanticListener listener : new ArrayList<PropertiesEditingSemanticListener>(listeners)) { |
| listener.notifyChanged(notification); |
| } |
| } |
| } |
| } |
| |
| } |