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/***********************************************************************************************************************
 *
 * OpenBlueSky - NetBeans Platform Enhancements
 * Copyright (C) 2006-2011 by Tidalwave s.a.s. (http://www.tidalwave.it)
 *
 ***********************************************************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations under the License.
 *
 ***********************************************************************************************************************
 *
 * WWW: http://openbluesky.kenai.com
 * SCM: https://kenai.com/hg/openbluesky~src
 *
 **********************************************************************************************************************/
package it.tidalwave.netbeans.examples.nodes.example4.view;

import it.tidalwave.util.NotFoundException;
import javax.annotation.Nonnull;
import java.awt.event.ActionEvent;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JOptionPane;
import javax.swing.SwingWorker;
import it.tidalwave.netbeans.examples.nodes.example1.roles.CardinalityVisitor;
import it.tidalwave.netbeans.examples.nodes.example1.roles.CompositeTraverser;
import static it.tidalwave.role.Displayable.Displayable;
import static it.tidalwave.netbeans.util.EnhancedLookups.lookup;

/***********************************************************************************************************************
 * 
 * @author  Fabrizio Giudici
 * @version $Id$
 *
 **********************************************************************************************************************/
public class ShowCardinalityAction extends AbstractAction
  {
    @Nonnull
    private final Object object;

    public ShowCardinalityAction (final @Nonnull Object object) 
      {
        this.object = object;
        super.putValue(Action.NAME, "Show cardinality");
      }
    
    @Override
    public void actionPerformed (final @Nonnull ActionEvent event)
      {
        final SwingWorker swingWorker = new SwingWorker() 
          {
            @Override @Nonnull
            protected Integer doInBackground()
              throws NotFoundException 
              {
                return CompositeTraverser.accept(object, new CardinalityVisitor());
              }

            @Override
            protected void done() 
              {
                try 
                  {
                    final String displayName = lookup(object, Displayable).getDisplayName();
                    final String message = String.format("File count for %s is %d", displayName, get());
                    JOptionPane.showMessageDialog(null, message, "Title", JOptionPane.INFORMATION_MESSAGE);
                  }
                catch (Exception e) 
                  {
                    e.printStackTrace();
                  }
              }
          };
        
        swingWorker.execute();
      }
  }