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   *  or more contributor license agreements.  See the NOTICE file
   *  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
   *  with the License.  You may obtain a copy of the License at
   *
   *    https://www.apache.org/licenses/LICENSE-2.0
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  package org.apache.cayenne.modeler.undo;
  
  import javax.swing.undo.CannotRedoException;
  import javax.swing.undo.CannotUndoException;
  
  import org.apache.cayenne.configuration.DataChannelDescriptor;
  import org.apache.cayenne.map.DataMap;
  import org.apache.cayenne.map.DbAttribute;
  import org.apache.cayenne.map.DbEntity;
  import org.apache.cayenne.map.ObjAttribute;
  import org.apache.cayenne.map.ObjEntity;
  import org.apache.cayenne.modeler.action.CreateAttributeAction;
  import org.apache.cayenne.modeler.action.RemoveAttributeAction;
  import org.apache.cayenne.modeler.event.EntityDisplayEvent;
  
  public class CreateAttributeUndoableEdit extends CayenneUndoableEdit {
  
      @Override
      public boolean canRedo() {
          return true;
      }
  
      @Override
      public String getPresentationName() {
          return "Create Attribute";
      }
  
      private ObjEntity objEntity;
      private ObjAttribute objAttr;
  
      private DataChannelDescriptor domain;
      private DataMap dataMap;
  
      private DbEntity dbEntity;
      private DbAttribute dbAttr;
  
      @Override
      public void redo() throws CannotRedoException {
          CreateAttributeAction action = actionManager
                  .getAction(CreateAttributeAction.class);
  
          if (objEntity != null) {
              action.createObjAttribute(dataMap, objEntity, objAttr);
          }
  
          if (dbEntity != null) {
              action.createDbAttribute(dataMap, dbEntity, dbAttr);
          }
      }
  
      @Override
      public void undo() throws CannotUndoException {
          RemoveAttributeAction action = actionManager
                  .getAction(RemoveAttributeAction.class);
  
          if (objEntity != null) {
              action.removeObjAttributes(objEntity, new ObjAttribute[] {
                  objAttr
              });
  
              controller.fireObjEntityDisplayEvent(new EntityDisplayEvent(
                      this,
                      objEntity,
                      dataMap,
                      domain));
          }
  
          if (dbEntity != null) {
              action.removeDbAttributes(dataMap, dbEntity, new DbAttribute[] {
                  dbAttr
              });
  
              controller.fireDbEntityDisplayEvent(new EntityDisplayEvent(
                      this,
                      dbEntity,
                      dataMap,
                      domain));
          }
      }
  
      public CreateAttributeUndoableEdit(DataChannelDescriptor domain, DataMap map,
              ObjEntity objEntity, ObjAttribute attr) {
          this.domain = domain;
          this.dataMap = map;
          this.objEntity = objEntity;
          this.objAttr = attr;
      }
  
      public CreateAttributeUndoableEdit(DataChannelDescriptor domain, DataMap map,
              DbEntity dbEntity, DbAttribute attr) {
          this.domain = domain;
          this.dataMap = map;
          this.dbEntity = dbEntity;
          this.dbAttr = attr;
      }
  }
  