org.eclipse.egf.model.editor/src/org/eclipse/egf/model/editor/contributions/OpenActivityMenuContributor.java

/**
 * <copyright>
 * 
 * Copyright (c) 2009-2010 Thales Corporate Services S.A.S.
 * 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:
 * Thales Corporate Services S.A.S - initial API and implementation
 * 
 * </copyright>
 */

package org.eclipse.egf.model.editor.contributions;

import org.eclipse.egf.model.editor.l10n.ModelEditorMessages;
import org.eclipse.egf.model.fcore.Invocation;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.viewers.IStructuredSelection;

/**
 * @author Xavier Maysonnave
 * 
 */
public class OpenActivityMenuContributor extends OpenEObjectMenuContributor {

  public static final String OPEN_ACTIVITY_ACTION_ID = "open-activity"; //$NON-NLS-1$  

  private final OpenAction _openAction = new OpenAction(OPEN_ACTIVITY_ACTION_ID) {
    @Override
    protected EObject getEObject() {
      if (selection == null) {
        return null;
      }
      IStructuredSelection sselection = (IStructuredSelection) selection;
      if (sselection.size() != 1) {
        return null;
      }
      Object object = sselection.getFirstElement();
      if (object instanceof Invocation) {
        Invocation invocation = (Invocation) object;
        return invocation.getInvokedActivity();
      }
      return null;
    }
  };

  @Override
  protected String getText() {
    if (getOpenAction().isAlreadyOpenedEditor()) {
      return ModelEditorMessages.ActivityMenuContributor_selectAction_label;
    }
    return ModelEditorMessages.ActivityMenuContributor_openAction_label;
  }

  @Override
  protected OpenAction getOpenAction() {
    return _openAction;
  }

}