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/*******************************************************************************
* Copyright (c) 2008, 2015 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
* Stefan Xenos <sxenos@gmail.com> - Bug 335792
******************************************************************************/
package org.eclipse.core.internal.databinding.property;
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.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;
/**
* @param <S>
* type of the source object
* @param <M>
* type of the elements in the master list
* @param <T>
* type of the elements in the list, being the type of the value of
* the detail property
* @since 3.3
*
*/
public class ValuePropertyDetailList<S, M, T> extends ListProperty<S, T> {
private final IValueProperty<S, M> masterProperty;
private final IListProperty<? super M, T> detailProperty;
/**
* @param masterProperty
* @param detailProperty
*/
public ValuePropertyDetailList(IValueProperty<S, M> masterProperty, IListProperty<? super M, T> detailProperty) {
this.masterProperty = masterProperty;
this.detailProperty = detailProperty;
}
@Override
public Object getElementType() {
return detailProperty.getElementType();
}
@Override
protected List<T> doGetList(S source) {
M masterValue = masterProperty.getValue(source);
return detailProperty.getList(masterValue);
}
@Override
protected void doSetList(S source, List<T> list) {
M masterValue = masterProperty.getValue(source);
detailProperty.setList(masterValue, list);
}
@Override
protected void doUpdateList(S source, ListDiff<T> diff) {
M masterValue = masterProperty.getValue(source);
detailProperty.updateList(masterValue, diff);
}
@Override
public IObservableList<T> observe(Realm realm, S source) {
IObservableValue<M> masterValue;
ObservableTracker.setIgnore(true);
try {
masterValue = masterProperty.observe(realm, source);
} finally {
ObservableTracker.setIgnore(false);
}
IObservableList<T> detailList = detailProperty.observeDetail(masterValue);
PropertyObservableUtil.cascadeDispose(detailList, masterValue);
return detailList;
}
@Override
public <U extends S> IObservableList<T> observeDetail(IObservableValue<U> master) {
IObservableValue<M> masterValue;
ObservableTracker.setIgnore(true);
try {
masterValue = masterProperty.observeDetail(master);
} finally {
ObservableTracker.setIgnore(false);
}
IObservableList<T> detailList = detailProperty.observeDetail(masterValue);
PropertyObservableUtil.cascadeDispose(detailList, masterValue);
return detailList;
}
@Override
public String toString() {
return masterProperty + " => " + detailProperty; //$NON-NLS-1$
}
}
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