/**
* Copyright (c) 2012 committers of YAKINDU 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:
* committers of YAKINDU - initial API and implementation
*
*/
package org.yakindu.sct.ui.editor.commands;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.operations.IOperationHistory;
import org.eclipse.core.commands.operations.OperationHistoryFactory;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.gmf.runtime.emf.type.core.commands.SetValueCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.handlers.HandlerUtil;
import org.yakindu.sct.model.sgraph.Entry;
import org.yakindu.sct.model.sgraph.EntryKind;
import org.yakindu.sct.model.sgraph.SGraphPackage;
import org.yakindu.sct.ui.editor.editparts.EntryEditPart;
/**
*
* @author andreas muelder - Initial contribution and API
*
*/
public abstract class SetEntryKindCommand extends AbstractHandler {
private Entry entry;
public abstract EntryKind getEntryKind();
public Object execute(ExecutionEvent event) throws ExecutionException {
entry = unwrap(HandlerUtil.getCurrentSelection(event));
if (entry == null)
return null;
SetValueCommand setCommand = new SetValueCommand(new SetRequest(entry,
SGraphPackage.Literals.ENTRY__KIND, getEntryKind()));
IOperationHistory history = OperationHistoryFactory
.getOperationHistory();
try {
history.execute(setCommand, new NullProgressMonitor(), null);
} catch (ExecutionException e) {
e.printStackTrace();
}
return null;
}
/**
* Unwraps the given selection
*
* @param selection
* @return
*/
public Entry unwrap(ISelection selection) {
IStructuredSelection structuredSelection = (IStructuredSelection) selection;
Object firstElement = structuredSelection.getFirstElement();
if (firstElement == null)
return null;
return ((EntryEditPart) firstElement).resolveSemanticElement();
}
@Override
public boolean isEnabled() {
ISelection selection = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getSelection();
entry = unwrap(selection);
return entry != null && !entry.getKind().equals(getEntryKind());
}
}