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/*
 * Copyright (c) 2004 - 2011 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.emf.editors.impl;

import org.eclipse.emf.cdo.dawn.editors.IDawnEditor;
import org.eclipse.emf.cdo.dawn.editors.impl.DawnAbstractEditorSupport;
import org.eclipse.emf.cdo.dawn.emf.notifications.impl.DawnEMFHandler;
import org.eclipse.emf.cdo.dawn.notifications.BasicDawnListener;
import org.eclipse.emf.cdo.transaction.CDOTransaction;
import org.eclipse.emf.cdo.view.CDOAdapterPolicy;
import org.eclipse.emf.cdo.view.CDOView;

import org.eclipse.emf.common.ui.viewer.IViewerProvider;

/**
 * @author Martin Fluegge
 * @since 1.0
 */
public class DawnEMFEditorSupport extends DawnAbstractEditorSupport
{
  public DawnEMFEditorSupport(IDawnEditor editor)
  {
    super(editor);
  }

  public void close()
  {
    CDOView view = getView();
    if (view != null && !view.isClosed())
    {
      view.close();
    }
  }

  public void registerListeners()
  {
    BasicDawnListener listener = new DawnEMFHandler(getEditor());
    CDOView view = getView();
    view.addListener(listener);

    if (view instanceof CDOTransaction)
    {
      CDOTransaction transaction = (CDOTransaction)view;
      transaction.options().addChangeSubscriptionPolicy(CDOAdapterPolicy.CDO);
    }
  }

  @Override
  public void rollback()
  {
    super.rollback();
    ((IViewerProvider)getEditor()).getViewer().refresh();
  }
}