| /* |
| * Copyright (c) 2008, 2009, 2011, 2012, 2015 Eike Stepper (Berlin, Germany) 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: |
| * Eike Stepper - initial API and implementation |
| */ |
| package org.eclipse.net4j.util.container.delegate; |
| |
| import org.eclipse.net4j.util.collection.MapEntry; |
| import org.eclipse.net4j.util.container.ContainerEvent; |
| import org.eclipse.net4j.util.container.IContainerDelta; |
| import org.eclipse.net4j.util.event.IListener; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * A default implementation of a {@link IContainerMap container map}. |
| * |
| * @author Eike Stepper |
| * @apiviz.exclude |
| */ |
| public class ContainerMap<K, V> extends AbstractDelegator<Map.Entry<K, V>>implements IContainerMap<K, V> |
| { |
| private Map<K, V> delegate; |
| |
| public ContainerMap(Map<K, V> delegate) |
| { |
| this.delegate = delegate; |
| } |
| |
| public Map<K, V> getDelegate() |
| { |
| return delegate; |
| } |
| |
| /** |
| * @category WRITE |
| */ |
| public void clear() |
| { |
| if (!isEmpty()) |
| { |
| ContainerEvent<Map.Entry<K, V>> event = createEvent(getDelegate().entrySet(), IContainerDelta.Kind.REMOVED); |
| getDelegate().clear(); |
| IListener[] listeners = getListeners(); |
| if (listeners != null) |
| { |
| fireEvent(event, listeners); |
| } |
| } |
| } |
| |
| /** |
| * @category WRITE |
| */ |
| public V put(K key, V value) |
| { |
| ContainerEvent<Map.Entry<K, V>> event = new ContainerEvent<Map.Entry<K, V>>(this); |
| V removed = getDelegate().put(key, value); |
| if (removed != null) |
| { |
| event.addDelta(new ContainerMapEntry<K, V>(key, removed), IContainerDelta.Kind.REMOVED); |
| } |
| |
| event.addDelta(new ContainerMapEntry<K, V>(key, value), IContainerDelta.Kind.ADDED); |
| IListener[] listeners = getListeners(); |
| if (listeners != null) |
| { |
| fireEvent(event, listeners); |
| } |
| |
| return removed; |
| } |
| |
| /** |
| * @category WRITE |
| */ |
| public void putAll(Map<? extends K, ? extends V> t) |
| { |
| ContainerEvent<Map.Entry<K, V>> event = new ContainerEvent<Map.Entry<K, V>>(this); |
| Iterator<? extends Entry<? extends K, ? extends V>> i = t.entrySet().iterator(); |
| while (i.hasNext()) |
| { |
| Entry<? extends K, ? extends V> entry = i.next(); |
| K key = entry.getKey(); |
| V value = entry.getValue(); |
| V removed = getDelegate().put(key, value); |
| if (removed != null) |
| { |
| event.addDelta(new ContainerMapEntry<K, V>(key, removed), IContainerDelta.Kind.REMOVED); |
| } |
| |
| event.addDelta(new ContainerMapEntry<K, V>(key, value), IContainerDelta.Kind.ADDED); |
| } |
| |
| dispatchEvent(event); |
| } |
| |
| /** |
| * @category WRITE |
| */ |
| public V remove(Object key) |
| { |
| V removed = getDelegate().remove(key); |
| if (removed != null) |
| { |
| fireRemovedEvent(new ContainerMapEntry<Object, V>(key, removed)); |
| } |
| |
| return removed; |
| } |
| |
| /** |
| * @category READ |
| */ |
| public boolean containsKey(Object key) |
| { |
| return getDelegate().containsKey(key); |
| } |
| |
| /** |
| * @category READ |
| */ |
| public boolean containsValue(Object value) |
| { |
| return getDelegate().containsValue(value); |
| } |
| |
| /** |
| * @category READ |
| */ |
| public V get(Object key) |
| { |
| return getDelegate().get(key); |
| } |
| |
| /** |
| * @category READ |
| */ |
| public int size() |
| { |
| return getDelegate().size(); |
| } |
| |
| /** |
| * @category READ |
| */ |
| @SuppressWarnings("unchecked") |
| public Map.Entry<K, V>[] getElements() |
| { |
| return (Entry<K, V>[])getDelegate().entrySet().toArray(); |
| } |
| |
| /** |
| * @category READ |
| */ |
| public boolean isEmpty() |
| { |
| return getDelegate().isEmpty(); |
| } |
| |
| /** |
| * @category READ |
| */ |
| public Set<Map.Entry<K, V>> entrySet() |
| { |
| return new ContainerSet<Map.Entry<K, V>>(getDelegate().entrySet()); |
| } |
| |
| /** |
| * @category READ |
| */ |
| public Set<K> keySet() |
| { |
| return new ContainerSet<K>(getDelegate().keySet()); |
| } |
| |
| /** |
| * @category READ |
| */ |
| public Collection<V> values() |
| { |
| return new ContainerCollection<V>(getDelegate().values()); |
| } |
| |
| /** |
| * @author Eike Stepper |
| */ |
| private static final class ContainerMapEntry<K, V> extends MapEntry<K, V> |
| { |
| public ContainerMapEntry(K key, V value) |
| { |
| super(key, value); |
| } |
| |
| @Override |
| public V setValue(V value) |
| { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| } |