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/*******************************************************************************
* Copyright (c) 2009 THALES GLOBAL SERVICES.
* 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:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.sirius.diagram.ui.tools.internal.views.providers.layers;
import org.eclipse.jface.viewers.StructuredViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.sirius.business.api.session.SessionListener;
import org.eclipse.sirius.common.ui.tools.api.util.EclipseUIUtil;
/**
* A listener to update the viewer.
*
* @author mchauvin
*/
public class LayersEventsListener implements SessionListener {
/** 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;
}
}
/**
* {@inheritDoc}
*
* @see org.eclipse.sirius.business.api.session.SessionListener#notify(int)
*/
public void notify(final int changeKind) {
switch (changeKind) {
case SessionListener.SELECTED_VIEWS_CHANGE_KIND:
case SessionListener.VSM_UPDATED:
updateViewer();
break;
default:
break;
}
}
private void updateViewer() {
EclipseUIUtil.displayAsyncExec(new Runnable() {
public void run() {
if (viewer != null && !viewer.getControl().isDisposed()) {
viewer.refresh();
}
}
});
}
}
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