/*
 * Copyright (c) 2010, 2012, 2015 Eike Stepper (Berlin, Germany) 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:
 *     Martin Fluegge - initial API and implementation
 *
 */
package org.eclipse.emf.cdo.dawn.examples.acore.diagram.part;

import org.eclipse.emf.ecore.EObject;

import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.IHandler;
import org.eclipse.core.commands.IHandlerListener;
import org.eclipse.gef.EditPart;
import org.eclipse.gmf.runtime.diagram.ui.editpolicies.CanonicalEditPolicy;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.PlatformUI;

import java.util.Iterator;
import java.util.List;

/**
 * @generated
 */
public class AcoreDiagramUpdateCommand implements IHandler
{

  /**
   * @generated
   */
  public void addHandlerListener(IHandlerListener handlerListener)
  {
  }

  /**
   * @generated
   */
  public void dispose()
  {
  }

  /**
   * @generated
   */
  public Object execute(ExecutionEvent event) throws ExecutionException
  {
    ISelection selection = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService().getSelection();
    if (selection instanceof IStructuredSelection)
    {
      IStructuredSelection structuredSelection = (IStructuredSelection)selection;
      if (structuredSelection.size() != 1)
      {
        return null;
      }
      if (structuredSelection.getFirstElement() instanceof EditPart
          && ((EditPart)structuredSelection.getFirstElement()).getModel() instanceof View)
      {
        EObject modelElement = ((View)((EditPart)structuredSelection.getFirstElement()).getModel()).getElement();
        List editPolicies = CanonicalEditPolicy.getRegisteredEditPolicies(modelElement);
        for (Iterator it = editPolicies.iterator(); it.hasNext();)
        {
          CanonicalEditPolicy nextEditPolicy = (CanonicalEditPolicy)it.next();
          nextEditPolicy.refresh();
        }

      }
    }
    return null;
  }

  /**
   * @generated
   */
  public boolean isEnabled()
  {
    return true;
  }

  /**
   * @generated
   */
  public boolean isHandled()
  {
    return true;
  }

  /**
   * @generated
   */
  public void removeHandlerListener(IHandlerListener handlerListener)
  {
  }

}