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/*******************************************************************************
* Copyright (c) 2008, 2009 THALES GLOBAL SERVICES.
* 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:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.sirius.diagram.ui.tools.internal.views.providers.filters;
import java.util.Collection;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.jface.viewers.StructuredViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.sirius.diagram.DDiagram;
import org.eclipse.sirius.diagram.DiagramPackage;
import org.eclipse.sirius.diagram.description.filter.FilterDescription;
import org.eclipse.ui.PlatformUI;
/**
* An adapter to listen layer activation change.
*
* @author mchauvin
*/
public class FiltersActivationAdapter extends AdapterImpl {
/** The structured viewer to update. */
private StructuredViewer viewer;
/**
* Set the viewer.
*
* @param viewer
* the viewer to update when the model change
*/
public void setViewer(final Viewer viewer) {
if (viewer instanceof StructuredViewer) {
this.viewer = (StructuredViewer) viewer;
}
}
private void update(final DDiagram diagram, final FilterDescription filter, final boolean activate) {
PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {
public void run() {
if (viewer != null) {
viewer.update(filter, null);
}
}
});
}
private void update(final DDiagram notifier, final Collection<FilterDescription> filters, final boolean b) {
PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {
public void run() {
if (viewer != null && filters != null) {
for (FilterDescription filter : filters) {
viewer.update(filter, null);
}
}
}
});
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.common.notify.impl.AdapterImpl#notifyChanged(org.eclipse.emf.common.notify.Notification)
*/
@Override
public void notifyChanged(final Notification msg) {
final Object notifier = msg.getNotifier();
if (notifier instanceof DDiagram) {
final int featureID = msg.getFeatureID(DDiagram.class);
if (featureID == DiagramPackage.DDIAGRAM__ACTIVATED_FILTERS) {
switch (msg.getEventType()) {
case Notification.ADD:
final FilterDescription filterToAdd = (FilterDescription) msg.getNewValue();
update((DDiagram) notifier, filterToAdd, true);
break;
case Notification.ADD_MANY:
@SuppressWarnings("unchecked")
final Collection<FilterDescription> filtersToAdd = (Collection<FilterDescription>) msg.getNewValue();
update((DDiagram) notifier, filtersToAdd, true);
break;
case Notification.REMOVE:
final FilterDescription filterToRemove = (FilterDescription) msg.getOldValue();
update((DDiagram) notifier, filterToRemove, false);
break;
case Notification.REMOVE_MANY:
@SuppressWarnings("unchecked")
final Collection<FilterDescription> filtersToRemove = (Collection<FilterDescription>) msg.getOldValue();
update((DDiagram) notifier, filtersToRemove, false);
break;
default:
break;
}
}
}
}
}
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