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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 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.map.IObservableMap;
import org.eclipse.core.databinding.observable.set.IObservableSet;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.databinding.property.value.IValueProperty;
import org.eclipse.core.databinding.property.value.ValueProperty;
/**
* @param <S>
* type of the source object
* @param <M>
* type of the property of the source object this type being the type
* that has the detail property as a property
* @param <T>
* type of this value property, being the same as the type of the
* value of the detail property
* @since 1.2
*
*/
public class ValuePropertyDetailValue<S, M, T> extends ValueProperty<S, T>implements IValueProperty<S, T> {
private IValueProperty<S, M> masterProperty;
private IValueProperty<? super M, T> detailProperty;
/**
* @param masterProperty
* @param detailProperty
*/
public ValuePropertyDetailValue(IValueProperty<S, M> masterProperty, IValueProperty<? super M, T> detailProperty) {
this.masterProperty = masterProperty;
this.detailProperty = detailProperty;
}
@Override
public Object getValueType() {
return detailProperty.getValueType();
}
@Override
protected T doGetValue(S source) {
M masterValue = masterProperty.getValue(source);
return detailProperty.getValue(masterValue);
}
@Override
protected void doSetValue(S source, T value) {
M masterValue = masterProperty.getValue(source);
detailProperty.setValue(masterValue, value);
}
@Override
public IObservableValue<T> observe(Realm realm, S source) {
IObservableValue<M> masterValue;
ObservableTracker.setIgnore(true);
try {
masterValue = masterProperty.observe(realm, source);
} finally {
ObservableTracker.setIgnore(false);
}
IObservableValue<T> detailValue = detailProperty.observeDetail(masterValue);
PropertyObservableUtil.cascadeDispose(detailValue, masterValue);
return detailValue;
}
@Override
public <V extends S> IObservableValue<T> observeDetail(IObservableValue<V> master) {
IObservableValue<M> masterValue;
ObservableTracker.setIgnore(true);
try {
masterValue = masterProperty.observeDetail(master);
} finally {
ObservableTracker.setIgnore(false);
}
IObservableValue<T> detailValue = detailProperty.observeDetail(masterValue);
PropertyObservableUtil.cascadeDispose(detailValue, masterValue);
return detailValue;
}
@Override
public <V extends S> IObservableList<T> observeDetail(IObservableList<V> master) {
IObservableList<M> masterList;
ObservableTracker.setIgnore(true);
try {
masterList = masterProperty.observeDetail(master);
} finally {
ObservableTracker.setIgnore(false);
}
IObservableList<T> detailList = detailProperty.observeDetail(masterList);
PropertyObservableUtil.cascadeDispose(detailList, masterList);
return detailList;
}
@Override
public <V extends S> IObservableMap<V, T> observeDetail(IObservableSet<V> master) {
IObservableMap<V, M> masterMap;
ObservableTracker.setIgnore(true);
try {
masterMap = masterProperty.observeDetail(master);
} finally {
ObservableTracker.setIgnore(false);
}
IObservableMap<V, T> detailMap = detailProperty.observeDetail(masterMap);
PropertyObservableUtil.cascadeDispose(detailMap, masterMap);
return detailMap;
}
@Override
public <K, V extends S> IObservableMap<K, T> observeDetail(IObservableMap<K, V> master) {
IObservableMap<K, M> 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;
}
@Override
public String toString() {
return masterProperty + " => " + detailProperty; //$NON-NLS-1$
}
}
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