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/*****************************************************************************
* Copyright (c) 2011 CEA LIST.
*
* 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:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.uml.tools.databinding;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.core.databinding.observable.IObservable;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.emf.common.command.CompoundCommand;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.papyrus.infra.tools.databinding.AggregatedObservable;
import org.eclipse.papyrus.infra.tools.databinding.MultipleObservableValue;
public class AggregatedPapyrusObservableValue extends MultipleObservableValue {
private final List<CommandBasedObservableValue> observables = new LinkedList<CommandBasedObservableValue>();
private final EditingDomain domain;
public AggregatedPapyrusObservableValue(EditingDomain domain, IObservable... observableValues) {
this.domain = domain;
for(IObservable value : observableValues) {
if(aggregate(value) == null) {
throw new IllegalArgumentException("The input ObservableValues have an incorrect type"); //$NON-NLS-1$
}
}
}
@Override
public AggregatedObservable aggregate(IObservable observable) {
if(observable instanceof CommandBasedObservableValue) {
if(!observables.isEmpty()) {
Object valueType = observables.get(0).getValueType();
if(((IObservableValue)observable).getValueType() != valueType) {
return null;
}
}
observables.add((CommandBasedObservableValue)observable);
super.aggregate(observable);
return this;
}
return null; //TODO : maybe we can support some other types
}
@Override
public void doSetValue(Object value) {
CompoundCommand command = new CompoundCommand();
for(CommandBasedObservableValue observableValue : observables) {
command.append(observableValue.getCommand(value));
}
domain.getCommandStack().execute(command);
}
}
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