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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.undo;
  
  import java.util.Collection;
  
  import javax.swing.undo.CompoundEdit;
  
  import org.apache.cayenne.configuration.DataChannelDescriptor;
  import org.apache.cayenne.map.DataMap;
  import org.apache.cayenne.map.DbAttribute;
  import org.apache.cayenne.map.ObjAttribute;
  import org.apache.cayenne.map.ObjEntity;
  import org.apache.cayenne.map.ObjRelationship;
  import org.apache.cayenne.util.EntityMergeListener;
  
  public class DbEntitySyncUndoableEdit extends CompoundEdit {
  
      @Override
      public boolean isInProgress() {
          return false;
      }
  
      @Override
      public boolean canUndo() {
          return !edits.isEmpty();
      }
  
      private DataChannelDescriptor domain;
      private DataMap map;
  
      public DbEntitySyncUndoableEdit(DataChannelDescriptor domain, DataMap map) {
          super();
          this.domain = domain;
          this.map = map;
      }
  
      public class EntitySyncUndoableListener implements EntityMergeListener {
  
          private ObjEntity entity;
  
          public EntitySyncUndoableListener(ObjEntity entity) {
              this.entity = entity;
          }
  
          public void objRelationshipAdded(ObjRelationship rel) {
              addEdit(new CreateRelationshipUndoableEdit(entity, new ObjRelationship[] {rel}));
          }
  
          public void objAttributeAdded(ObjAttribute attr) {
              addEdit(new CreateAttributeUndoableEdit(domain, map, entity, attr));
          }
      }
  
      public class MeaningfulFKsUndoableEdit extends CompoundEdit {
  
          @Override
          public boolean isInProgress() {
              return false;
          }
  
          @Override
          public boolean canUndo() {
              return !edits.isEmpty();
          }
  
          public MeaningfulFKsUndoableEdit(ObjEntity entity, Collection<DbAttribute> dbAttrs) {
              for (DbAttribute da : dbAttrs) {
                  ObjAttribute oa = entity.getAttributeForDbAttribute(da);
                  if (oa != null) {
                      addEdit(new RemoveAttributeUndoableEdit(entity, new ObjAttribute[] {oa}));
                  }
              }
          }
      }
  
      @Override
      public String getRedoPresentationName() {
          return "Redo Db Entity Sync";
      }
  
      @Override
      public String getUndoPresentationName() {
          return "Undo Db Entity Sync";
      }
  }
  