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 *   Licensed to the Apache Software Foundation (ASF) under one
 *  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
 *
 *    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.
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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;
    }
}