it.tidalwave.metadata.viewer.MetadataPanelProviderSupport Maven / Gradle / Ivy

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/***********************************************************************************************************************
 *
 * blueMarine Metadata - open source media workflow
 * Copyright (C) 2007-2011 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://bluemarine.tidalwave.it
 * SCM: https://kenai.com/hg/bluemarine~metadata-src
 *
 **********************************************************************************************************************/
package it.tidalwave.metadata.viewer;

import it.tidalwave.metadata.NoSuchMetadataTypeException;
import it.tidalwave.util.logging.Logger;
import javax.swing.JComponent;
import org.openide.loaders.DataObject;
import it.tidalwave.metadata.Metadata;
import it.tidalwave.metadata.MetadataItemHolder;
import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;

/*******************************************************************************
 *
 * @author  Fabrizio Giudici
 * @version $Id$
 *
 ******************************************************************************/
public abstract class MetadataPanelProviderSupport, Item> implements MetadataPanelProvider
  {
    private final static String CLASS = MetadataPanelProviderSupport.class.getName();    
    private final Logger logger = Logger.getLogger(CLASS);
    
    @CheckForNull
    protected Pane pane;

    @Nonnull
    private final Class paneClass;

    @Nonnull
    private final Class itemClass;

    @Nonnull
    private final String displayName;

    @CheckForNull
    private DataObject dataObject;
    
    private final Metadata.StorageType sourceType = Metadata.StorageType.INTERNAL; // FIXME: make it changeable

    /***************************************************************************
     *
     *
     **************************************************************************/
    public MetadataPanelProviderSupport (@Nonnull final String displayName,
                                         @Nonnull final Class paneClass,
                                         @Nonnull final Class itemClass)
      {
        this.displayName = displayName;
        this.paneClass = paneClass;
        this.itemClass = itemClass;
      }
    
    /***************************************************************************
     *
     *
     **************************************************************************/
    @Nonnull
    public String getDisplayName() 
      {
        return displayName;
      }

    /***************************************************************************
     *
     *
     **************************************************************************/
    abstract public boolean isDataObjectSupported (@Nonnull final DataObject dataObject);
    
    /***************************************************************************
     *
     *
     **************************************************************************/
    @Nonnull
    public synchronized JComponent createPanel()
      {
        if (pane == null)
          {
            try 
              {
                pane = paneClass.newInstance();
              } 
            catch (InstantiationException e) 
              {
                throw new RuntimeException(e);
              } 
            catch (IllegalAccessException e) 
              {
                throw new RuntimeException(e);
              }
          }

        return (JComponent)pane;
      }

    /***************************************************************************
     *
     *
     **************************************************************************/
    public void setDataObject (@CheckForNull final DataObject dataObject)
      {
        logger.info("setDataObject(%s)", dataObject);
        final long time = System.currentTimeMillis();
        
        if (pane != null)
          {
            this.dataObject = dataObject;
            
            if (dataObject != null)
              {
                final Metadata metadata = dataObject.getLookup().lookup(Metadata.class);
                logger.fine(">>>> metadata: %s", metadata);

                if (metadata != null)
                  {
//                    RequestProcessor.getDefault().post(new Runnable() 
//                      {
//                        public void run() 
                          {

                            try 
                              {
                                final MetadataItemHolder holder = metadata.findOrCreateItem(itemClass, sourceType);
                                logger.fine(">>>> holder: %s", holder);
                                pane.bind(holder);
                              }
                            catch (NoSuchMetadataTypeException e) 
                              {
                                logger.severe(String.format("Could not bind item, because of %s", e));
                              }
                            catch (IllegalArgumentException e)
                              {
                                logger.severe(String.format("Could not bind item, because of %s", e));
                              }
                            
                            logger.fine(">>>> setDataObject() completed in %d msec", System.currentTimeMillis() - time);
                          }//                      });  
                  }
              }
          }
      }
    
    /***************************************************************************
     *
     *
     **************************************************************************/
    @CheckForNull
    public DataObject getDataObject()
      {
        return dataObject;    
      }
  }