plugins/org.eclipse.sirius.diagram.ui/src-diag/org/eclipse/sirius/diagram/ui/graphical/edit/policies/LabelDeletionEditPolicy.java

/*******************************************************************************
 * Copyright (c) 2012 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.graphical.edit.policies;

import org.eclipse.gef.EditPart;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.requests.GroupRequest;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.ComponentEditPolicy;
import org.eclipse.sirius.diagram.ui.edit.api.part.IDiagramElementEditPart;
import org.eclipse.sirius.diagram.ui.edit.api.part.IDiagramNameEditPart;

/**
 * This {@link org.eclipse.gef.EditPolicy} is used to handle the deletion of a
 * label element. It redirect the request to the parent edit part.
 * 
 * @author mporhel
 */
public class LabelDeletionEditPolicy extends ComponentEditPolicy {

    @Override
    protected Command getDeleteCommand(GroupRequest request) {
        if (getHost() instanceof IDiagramNameEditPart) {
            EditPart parent = getHost().getParent();
            if (parent instanceof IDiagramElementEditPart) {
                return parent.getCommand(request);
            }
        }
        return null;
    }
}