/******************************************************************************
* Copyright (c) 2002, 2006 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
****************************************************************************/
package org.eclipse.gmf.runtime.diagram.ui.actions;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.common.core.util.Log;
import org.eclipse.gmf.runtime.common.core.util.Trace;
import org.eclipse.gmf.runtime.diagram.core.util.ViewUtil;
import org.eclipse.gmf.runtime.diagram.ui.actions.internal.DiagramActionsDebugOptions;
import org.eclipse.gmf.runtime.diagram.ui.actions.internal.DiagramActionsPlugin;
import org.eclipse.gmf.runtime.diagram.ui.actions.internal.DiagramActionsStatusCodes;
import org.eclipse.gmf.runtime.emf.ui.action.AbstractModelActionDelegate;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
/**
* Abstract action delegate for diagram actions that work with selected
* <code>EObject</code> in a model.
*
* @author ldamus
*/
public abstract class AbstractDiagramModelActionDelegate
extends AbstractModelActionDelegate {
/**
* Returns the elements in the given selection.
*
* @return a list of <code>EObject</code>
*/
protected List getElements(final ISelection selection) {
final List result = new ArrayList();
if (selection instanceof IStructuredSelection) {
try {
getEditingDomain().runExclusive(new Runnable() {
public void run() {
if (selection instanceof IStructuredSelection) {
IStructuredSelection structuredSelection = (IStructuredSelection) selection;
for (Iterator i = structuredSelection.iterator(); i
.hasNext();) {
Object next = i.next();
View view = (View) ((IAdaptable) next)
.getAdapter(View.class);
if (view != null) {
EObject eObject = ViewUtil
.resolveSemanticElement(view);
if (eObject != null) {
result.add(eObject);
} else {
result.add(view);
}
}
}
}
}
});
} catch (InterruptedException e) {
Trace.catching(DiagramActionsPlugin.getInstance(),
DiagramActionsDebugOptions.EXCEPTIONS_CATCHING, getClass(),
"getElements", e); //$NON-NLS-1$
Log.error(DiagramActionsPlugin.getInstance(),
DiagramActionsStatusCodes.IGNORED_EXCEPTION_WARNING, e
.getLocalizedMessage(), e);
}
}
return result;
}
}