| /******************************************************************************* |
| * Copyright (c) 2008, 2010 Matthew Hall 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: |
| * Matthew Hall - initial API and implementation (bug 194734) |
| * Matthew Hall - bugs 195222, 278550 |
| ******************************************************************************/ |
| |
| package org.eclipse.core.internal.databinding.property; |
| |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| import org.eclipse.core.databinding.observable.ObservableTracker; |
| import org.eclipse.core.databinding.observable.Realm; |
| import org.eclipse.core.databinding.observable.map.IObservableMap; |
| import org.eclipse.core.databinding.observable.map.MapDiff; |
| import org.eclipse.core.databinding.observable.value.IObservableValue; |
| import org.eclipse.core.databinding.property.map.IMapProperty; |
| import org.eclipse.core.databinding.property.map.MapProperty; |
| import org.eclipse.core.databinding.property.value.IValueProperty; |
| import org.eclipse.core.internal.databinding.identity.IdentityMap; |
| |
| /** |
| * @param <S> |
| * type of the source object |
| * @param <K> |
| * type of the keys to the map |
| * @param <V> |
| * type of the values in the map |
| * @param <T> |
| * type of the elements in the list, being the type of the value of |
| * the detail property |
| * @since 3.3 |
| * |
| */ |
| public class MapPropertyDetailValuesMap<S, K, V, T> extends |
| MapProperty<S, K, T> { |
| private final IMapProperty<S, K, V> masterProperty; |
| private final IValueProperty<? super V, T> detailProperty; |
| |
| /** |
| * @param masterProperty |
| * @param detailProperty |
| */ |
| public MapPropertyDetailValuesMap(IMapProperty<S, K, V> masterProperty, |
| IValueProperty<? super V, T> detailProperty) { |
| this.masterProperty = masterProperty; |
| this.detailProperty = detailProperty; |
| } |
| |
| /** |
| * @deprecated use getValueClass instead |
| */ |
| public Object getValueType() { |
| return detailProperty.getValueType(); |
| } |
| |
| /** |
| * @deprecated use getKeyClass instead |
| */ |
| public Object getKeyType() { |
| return masterProperty.getKeyType(); |
| } |
| |
| public Class<K> getKeyClass() { |
| return masterProperty.getKeyClass(); |
| } |
| |
| public Class<T> getValueClass() { |
| return detailProperty.getValueClass(); |
| } |
| |
| protected Map<K, T> doGetMap(S source) { |
| Map<K, V> masterMap = masterProperty.getMap(source); |
| Map<K, T> detailMap = new IdentityMap<K, T>(); |
| for (Map.Entry<K, V> entry : masterMap.entrySet()) { |
| detailMap.put(entry.getKey(), |
| detailProperty.getValue(entry.getValue())); |
| } |
| return detailMap; |
| } |
| |
| protected void doUpdateMap(S source, MapDiff<K, T> diff) { |
| if (!diff.getAddedKeys().isEmpty()) |
| throw new UnsupportedOperationException(toString() |
| + " does not support entry additions"); //$NON-NLS-1$ |
| if (!diff.getRemovedKeys().isEmpty()) |
| throw new UnsupportedOperationException(toString() |
| + " does not support entry removals"); //$NON-NLS-1$ |
| Map<K, V> masterMap = masterProperty.getMap(source); |
| for (Iterator<K> it = diff.getChangedKeys().iterator(); it.hasNext();) { |
| K key = it.next(); |
| V masterValue = masterMap.get(key); |
| detailProperty.setValue(masterValue, diff.getNewValue(key)); |
| } |
| } |
| |
| public IObservableMap<K, T> observe(Realm realm, S source) { |
| IObservableMap<K, V> masterMap; |
| |
| ObservableTracker.setIgnore(true); |
| try { |
| masterMap = masterProperty.observe(realm, source); |
| } finally { |
| ObservableTracker.setIgnore(false); |
| } |
| |
| IObservableMap<K, T> detailMap = detailProperty |
| .observeDetail(masterMap); |
| PropertyObservableUtil.cascadeDispose(detailMap, masterMap); |
| return detailMap; |
| } |
| |
| public <U extends S> IObservableMap<K, T> observeDetail( |
| IObservableValue<U> master) { |
| IObservableMap<K, V> masterMap; |
| |
| ObservableTracker.setIgnore(true); |
| try { |
| masterMap = masterProperty.observeDetail(master); |
| } finally { |
| ObservableTracker.setIgnore(false); |
| } |
| |
| IObservableMap<K, T> detailMap = detailProperty |
| .observeDetail(masterMap); |
| PropertyObservableUtil.cascadeDispose(detailMap, masterMap); |
| return detailMap; |
| } |
| |
| public String toString() { |
| return masterProperty + " => " + detailProperty; //$NON-NLS-1$ |
| } |
| } |