/*******************************************************************************
* 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.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.databinding.observable.ObservableTracker;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.databinding.observable.list.IObservableList;
import org.eclipse.core.databinding.observable.list.ListDiff;
import org.eclipse.core.databinding.observable.list.ListDiffVisitor;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.databinding.property.list.IListProperty;
import org.eclipse.core.databinding.property.list.ListProperty;
import org.eclipse.core.databinding.property.value.IValueProperty;
/**
* @since 3.3
*
*/
public class ListPropertyDetailValuesList extends ListProperty {
private final IListProperty masterProperty;
private final IValueProperty detailProperty;
/**
* @param masterProperty
* @param detailProperty
*/
public ListPropertyDetailValuesList(IListProperty masterProperty,
IValueProperty detailProperty) {
this.masterProperty = masterProperty;
this.detailProperty = detailProperty;
}
public Object getElementType() {
return detailProperty.getValueType();
}
protected List doGetList(Object source) {
List masterList = masterProperty.getList(source);
List detailList = new ArrayList(masterList.size());
for (Iterator it = masterList.iterator(); it.hasNext();)
detailList.add(detailProperty.getValue(it.next()));
return detailList;
}
protected void doUpdateList(Object source, ListDiff diff) {
final List masterList = masterProperty.getList(source);
diff.accept(new ListDiffVisitor() {
public void handleAdd(int index, Object element) {
throw new UnsupportedOperationException();
}
public void handleRemove(int index, Object element) {
throw new UnsupportedOperationException();
}
public void handleMove(int oldIndex, int newIndex, Object element) {
throw new UnsupportedOperationException();
}
public void handleReplace(int index, Object oldElement,
Object newElement) {
detailProperty.setValue(masterList.get(index), newElement);
}
});
}
public IObservableList observe(Realm realm, Object source) {
IObservableList masterList;
ObservableTracker.setIgnore(true);
try {
masterList = masterProperty.observe(realm, source);
} finally {
ObservableTracker.setIgnore(false);
}
IObservableList detailList = detailProperty.observeDetail(masterList);
PropertyObservableUtil.cascadeDispose(detailList, masterList);
return detailList;
}
public IObservableList observeDetail(IObservableValue master) {
IObservableList masterList;
ObservableTracker.setIgnore(true);
try {
masterList = masterProperty.observeDetail(master);
} finally {
ObservableTracker.setIgnore(false);
}
IObservableList detailList = detailProperty.observeDetail(masterList);
PropertyObservableUtil.cascadeDispose(detailList, masterList);
return detailList;
}
public String toString() {
return masterProperty + " => " + detailProperty; //$NON-NLS-1$
}
}