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   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
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   *
   *    https://www.apache.org/licenses/LICENSE-2.0
   *
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  package org.apache.cayenne.modeler.graph.action;
  
  import java.awt.event.ActionEvent;
  
  import org.apache.cayenne.map.DbEntity;
  import org.apache.cayenne.map.Entity;
  import org.apache.cayenne.map.ObjEntity;
  import org.apache.cayenne.modeler.Application;
  import org.apache.cayenne.modeler.action.RemoveAction;
  import org.apache.cayenne.modeler.dialog.ConfirmRemoveDialog;
  import org.apache.cayenne.modeler.graph.GraphBuilder;
  import org.apache.cayenne.modeler.undo.RemoveUndoableEdit;
  
  /**
   * Action for removing entities from the graph
   */
  public class RemoveEntityAction extends RemoveAction {
      GraphBuilder<?,?,?> builder;
      
      public RemoveEntityAction(GraphBuilder<?,?,?> builder) {
          super(Application.getInstance());
          this.builder = builder;
          setEnabled(true);
      }
  
      @Override
      public void performAction(ActionEvent e, boolean allowAsking) {
          ConfirmRemoveDialog dialog = getConfirmDeleteDialog(allowAsking);
  
          Entity<?,?,?> entity = builder.getSelectedEntity();
          if (entity == null) {
              return;
          }
          
          if (entity instanceof ObjEntity) {
              if (dialog.shouldDelete("ObjEntity", entity.getName())) {
                  application.getUndoManager().addEdit(
                          new RemoveUndoableEdit(entity.getDataMap(), (ObjEntity) entity));
                  removeObjEntity(entity.getDataMap(), (ObjEntity) entity);
              }
          }
          else {
              if (dialog.shouldDelete("DbEntity", entity.getName())) {
                  application.getUndoManager().addEdit(
                          new RemoveUndoableEdit(entity.getDataMap(), (DbEntity) entity));
                  removeDbEntity(entity.getDataMap(), (DbEntity) entity);
              }
          }
      }
  }
  