/* ******************************************************************************
* Copyright (c) 2006-2012 XMind Ltd. and others.
*
* This file is a part of XMind 3. XMind releases 3 and
* above are dual-licensed under the Eclipse Public License (EPL),
* which is available at http://www.eclipse.org/legal/epl-v10.html
* and the GNU Lesser General Public License (LGPL),
* which is available at http://www.gnu.org/licenses/lgpl.html
* See http://www.xmind.net/license.html for details.
*
* Contributors:
* XMind Ltd. - initial API and implementation
*******************************************************************************/
package org.xmind.gef.service;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.xmind.gef.IGraphicalViewer;
import org.xmind.gef.draw2d.geometry.Geometry;
import org.xmind.gef.part.IGraphicalPart;
public class SimpleRevealService extends BaseRevealService {
public SimpleRevealService(IGraphicalViewer viewer) {
super(viewer);
}
protected void activate() {
}
protected void deactivate() {
}
public void reveal(ISelection selection) {
if (isActive()) {
getViewer().ensureVisible(calcSelectionBounds(selection));
}
}
protected Rectangle calcSelectionBounds(ISelection selection) {
if (selection instanceof IStructuredSelection) {
Object[] elements = ((IStructuredSelection) selection).toArray();
Rectangle r = null;
for (Object o : elements) {
IGraphicalPart part = getViewer().findGraphicalPart(o);
if (part != null) {
Rectangle bounds = ((IGraphicalPart) part).getFigure()
.getBounds();
r = Geometry.union(r, bounds);
}
}
return r;
}
return null;
}
}