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/*****************************************************************************
* Copyright (c) 2013, 2014 CEA LIST and others.
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Camille Letavernier (camille.letavernier@cea.fr) - Initial API and implementation
* Christian W. Damus (CEA) - 402525
*
*****************************************************************************/
package org.eclipse.papyrus.uml.tools.databinding;
import org.eclipse.core.databinding.observable.ChangeEvent;
import org.eclipse.core.databinding.observable.IChangeListener;
import org.eclipse.core.databinding.observable.IObserving;
import org.eclipse.core.databinding.observable.value.AbstractObservableValue;
import org.eclipse.core.databinding.observable.value.ValueDiff;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.papyrus.uml.tools.Activator;
import org.eclipse.papyrus.uml.tools.util.MultiplicityParser;
import org.eclipse.uml2.uml.Extension;
/**
* An ObservableValue to edit the derived "isRequired" property for a Stereotype Extension
* The isRequired property is reverse derived to retrieve the lower bound of the extensionEnd
*
* @author Camille Letavernier
*
* @deprecated since 4.3
* use {@link org.eclipe.papyrus.uml.properties.databinding.ExtensionRequiredObservableValue} instead
*
* This class Will be removed in Papyrus 5.0, see bug 540829
*/
@Deprecated
public class ExtensionRequiredObservableValue extends AbstractObservableValue implements IChangeListener, IObserving {
private Extension extension;
private MultiplicityObservableValue observable;
private boolean currentValue;
public ExtensionRequiredObservableValue(Extension extension, EditingDomain domain) {
this.extension = extension;
if (!this.extension.getOwnedEnds().isEmpty()) {
observable = new MultiplicityObservableValue(this.extension.getOwnedEnds().get(0), domain);
observable.addChangeListener(this);
}
currentValue = extension.isRequired();
}
@Override
public Object getValueType() {
return Boolean.class;
}
@Override
protected Boolean doGetValue() {
return extension.isRequired();
}
@Override
protected void doSetValue(Object value) {
if (!(value instanceof Boolean)) {
return;
}
Boolean required = (Boolean) value;
if (extension.getOwnedEnds().isEmpty()) {
Activator.log.warn("Unable to change the extension \"isRequired\" property"); //$NON-NLS-1$
}
observable.setValue(required ? MultiplicityParser.ONE : MultiplicityParser.OPTIONAL);
currentValue = required;
}
@Override
public Object getObserved() {
return extension;
}
@Override
public void dispose() {
observable.removeChangeListener(this);
observable.dispose();
observable = null;
super.dispose();
}
@Override
public void handleChange(ChangeEvent event) {
final boolean oldValue = currentValue;
final boolean newValue = doGetValue();
currentValue = newValue;
fireValueChange(new ValueDiff() {
@Override
public Object getOldValue() {
return oldValue;
}
@Override
public Object getNewValue() {
return newValue;
}
});
}
}
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