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  package org.apache.cayenne.modeler.dialog.db.load;
  
  import org.apache.cayenne.dbsync.reverse.dbimport.Catalog;
  import org.apache.cayenne.dbsync.reverse.dbimport.IncludeTable;
  import org.apache.cayenne.dbsync.reverse.dbimport.PatternParam;
  import org.apache.cayenne.dbsync.reverse.dbimport.Schema;
  
  import java.awt.datatransfer.DataFlavor;
  import java.awt.datatransfer.Transferable;
  import java.awt.datatransfer.UnsupportedFlavorException;
  import java.io.IOException;
  
  /**
   * @since 4.1
   */
  public class TransferableNode extends DbImportTreeNode implements Transferable {
  
      private static final DataFlavor catalogFlavor = new DataFlavor(Catalog.class, Catalog.class.getSimpleName());
      private static final DataFlavor schemaFlavor = new DataFlavor(Schema.class, Schema.class.getSimpleName());
      private static final DataFlavor includeTableFlavor = new DataFlavor(IncludeTable.class, IncludeTable.class.getSimpleName());
      private static final DataFlavor patternParamFlavor = new DataFlavor(PatternParam.class, PatternParam.class.getSimpleName());
      public static final DataFlavor[] flavors = new DataFlavor[] { catalogFlavor, schemaFlavor,
                                                                      includeTableFlavor, patternParamFlavor };
  
      public TransferableNode(Object userObject) {
          super(userObject);
      }
  
      @Override
      public DataFlavor[] getTransferDataFlavors() {
          return flavors;
      }
  
      @Override
      public boolean isDataFlavorSupported(DataFlavor flavor) {
          for (DataFlavor dataFlavor : flavors) {
              if (flavor.equals(dataFlavor)) {
                  return true;
              }
          }
          return false;
      }
  
      @Override
      public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
          if (isDataFlavorSupported(flavor)) {
              return userObject;
          } else {
              return null;
          }
      }
  }
  