plugins/org.eclipse.sirius.editor.diagram/src/org/eclipse/sirius/diagram/editor/tools/internal/menu/initializer/InitializerAction.java

/*******************************************************************************
 * Copyright (c) 2014 - Joao Martins 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:
 *   Joao Martins <joaomartins27396@gmail.com>  - initial API and implementation 
 *   Maxime Porhel <maxime.porhel@obeo.fr> Obeo - Bug 438074, remarks and correction during review.
 *******************************************************************************/

package org.eclipse.sirius.diagram.editor.tools.internal.menu.initializer;

import java.util.Collection;

import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.common.command.UnexecutableCommand;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.sirius.editor.tools.api.menu.AbstractEObjectRefactoringAction;
import org.eclipse.sirius.viewpoint.description.Viewpoint;
import org.eclipse.ui.IEditorPart;

/**
 * Action to launch the Intializer, it is valid only when the selection contains
 * one Viewpoint.
 * 
 * 
 * @author Joao Martins.
 * 
 */
public class InitializerAction extends AbstractEObjectRefactoringAction {

    /**
     * Create the action.
     * 
     * @param editor
     *            the current editor.
     * @param selection
     *            the current selection.
     */
    public InitializerAction(final IEditorPart editor, final ISelection selection) {
        super(editor, selection);
    }

    /**
     * {@inheritDoc}
     */
    protected Command buildActionCommand(final EditingDomain arg0, final Collection<EObject> selection) {
        Command result = UnexecutableCommand.INSTANCE;
        setSelectionValid(false);
        if (selection.size() == 1 && selection.iterator().next() instanceof Viewpoint) {
            setSelectionValid(true);
            result = new InitializerCommand(arg0.getResourceSet(), selection);
        }

        return result;
    }

}