/*******************************************************************************
* 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;
/**
* @since 3.3
*
*/
public class MapPropertyDetailValuesMap extends MapProperty {
private final IMapProperty masterProperty;
private final IValueProperty detailProperty;
/**
* @param masterProperty
* @param detailProperty
*/
public MapPropertyDetailValuesMap(IMapProperty masterProperty,
IValueProperty detailProperty) {
this.masterProperty = masterProperty;
this.detailProperty = detailProperty;
}
public Object getKeyType() {
return masterProperty.getKeyType();
}
public Object getValueType() {
return detailProperty.getValueType();
}
protected Map doGetMap(Object source) {
Map masterMap = masterProperty.getMap(source);
Map detailMap = new IdentityMap();
for (Iterator it = masterMap.entrySet().iterator(); it.hasNext();) {
Map.Entry entry = (Map.Entry) it.next();
detailMap.put(entry.getKey(), detailProperty.getValue(entry
.getValue()));
}
return detailMap;
}
protected void doUpdateMap(Object source, MapDiff 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 masterMap = masterProperty.getMap(source);
for (Iterator it = diff.getChangedKeys().iterator(); it.hasNext();) {
Object key = it.next();
Object masterValue = masterMap.get(key);
detailProperty.setValue(masterValue, diff.getNewValue(key));
}
}
public IObservableMap observe(Realm realm, Object source) {
IObservableMap masterMap;
ObservableTracker.setIgnore(true);
try {
masterMap = masterProperty.observe(realm, source);
} finally {
ObservableTracker.setIgnore(false);
}
IObservableMap detailMap = detailProperty.observeDetail(masterMap);
PropertyObservableUtil.cascadeDispose(detailMap, masterMap);
return detailMap;
}
public IObservableMap observeDetail(IObservableValue master) {
IObservableMap masterMap;
ObservableTracker.setIgnore(true);
try {
masterMap = masterProperty.observeDetail(master);
} finally {
ObservableTracker.setIgnore(false);
}
IObservableMap detailMap = detailProperty.observeDetail(masterMap);
PropertyObservableUtil.cascadeDispose(detailMap, masterMap);
return detailMap;
}
public String toString() {
return masterProperty + " => " + detailProperty; //$NON-NLS-1$
}
}