| /******************************************************************************* |
| * Copyright (c) 2006, 2007 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| ******************************************************************************/ |
| |
| package org.eclipse.core.databinding.observable.map; |
| |
| import org.eclipse.core.databinding.observable.ObservableEvent; |
| |
| /** |
| * Map change event describing an incremental change of an |
| * {@link IObservableMap} object. |
| * |
| * @param <K> |
| * type of the keys to the map |
| * @param <V> |
| * type of the values in the map |
| * @since 1.0 |
| * |
| */ |
| public class MapChangeEvent<K, V> extends |
| ObservableEvent<MapChangeEvent<K, V>, IMapChangeListener<K, V>> { |
| |
| /** |
| * |
| */ |
| private static final long serialVersionUID = -8092347212410548463L; |
| static final Object TYPE = new Object(); |
| |
| /** |
| * Description of the change to the source observable map. Listeners must |
| * not change this field. |
| */ |
| public MapDiff<? extends K, ? extends V> diff; |
| |
| /** |
| * Always identical to <code>EventObject.source</code> but the type |
| * information is maintained. |
| */ |
| private IObservableMap<K, V> typedSource; |
| |
| /** |
| * Creates a new map change event |
| * |
| * @param source |
| * the source observable map |
| * @param diff |
| * the map change |
| */ |
| public MapChangeEvent(IObservableMap<K, V> source, |
| MapDiff<? extends K, ? extends V> diff) { |
| super(source); |
| this.typedSource = source; |
| this.diff = diff; |
| } |
| |
| /** |
| * Returns the observable map from which this event originated. |
| * |
| * @return the observable map from which this event originated |
| */ |
| public IObservableMap<K, V> getObservableMap() { |
| return typedSource; |
| } |
| |
| /** |
| * @since 1.5 |
| */ |
| protected void dispatch(IMapChangeListener<K, V> listener) { |
| listener.handleMapChange(this); |
| } |
| |
| protected Object getListenerType() { |
| return TYPE; |
| } |
| |
| } |