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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
   *
   *    https://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
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   ****************************************************************/
  package org.apache.cayenne.modeler.action;
  
  import java.awt.event.ActionEvent;
  
  import org.apache.cayenne.map.CallbackMap;
  import org.apache.cayenne.map.event.MapEvent;
  import org.apache.cayenne.modeler.Application;
  import org.apache.cayenne.modeler.ProjectController;
  import org.apache.cayenne.modeler.dialog.ConfirmRemoveDialog;
  import org.apache.cayenne.modeler.editor.CallbackType;
  import org.apache.cayenne.modeler.editor.ObjCallbackMethod;
  import org.apache.cayenne.modeler.event.CallbackMethodEvent;
  import org.apache.cayenne.modeler.undo.RemoveCallbackMethodUndoableEdit;
  
  
  /**
   * Action class for removing callback methods from ObjEntity
   *
   * @version 1.0 Oct 30, 2007
   */
  public class RemoveCallbackMethodAction extends RemoveAction {
      
      /**
       * unique action name
       */
      public final static String ACTION_NAME = "Remove Callback Method";
      
      /**
       * action name for multiple selection
       */
      private final static String ACTION_NAME_MULTIPLE = "Remove Callback Methods";
  
      /**
       * Constructor.
       *
       * @param application Application instance
       */
      public RemoveCallbackMethodAction(Application application) {
          super(getActionName(), application);
      }
  
      /**
       * @return icon file name for button
       */
      @Override
      public String getIconName() {
          return "icon-trash.png";
      }
      
      /**
       * performs callback method removing
       * @param e event
       */
      public void performAction(ActionEvent e, boolean allowAsking) {
          ConfirmRemoveDialog dialog = getConfirmDeleteDialog(allowAsking);
          
          ObjCallbackMethod[] methods = getProjectController().getCurrentCallbackMethods();
  
          if ((methods.length == 1 && dialog.shouldDelete("callback method", methods[0].getName()))
          		|| (methods.length > 1 && dialog.shouldDelete("selected callback methods"))) {
          	removeCallbackMethods();
          }
      }
  
      /**
       * base logic for callback method removing
       */
      private void removeCallbackMethods() {
          ProjectController mediator = getProjectController();
          CallbackType callbackType = mediator.getCurrentCallbackType();
  
          ObjCallbackMethod[] callbackMethods = mediator.getCurrentCallbackMethods();
  
          for (ObjCallbackMethod callbackMethod : callbackMethods) {
              removeCallbackMethod(callbackType, callbackMethod.getName());
          }
          
          Application.getInstance().getUndoManager().addEdit( 
          		new RemoveCallbackMethodUndoableEdit(callbackType, callbackMethods));
      }
      
      public void removeCallbackMethod(CallbackType callbackType, String method) {
          ProjectController mediator = getProjectController();
          getCallbackMap().getCallbackDescriptor(callbackType.getType()).removeCallbackMethod(method);
          
          CallbackMethodEvent e = new CallbackMethodEvent(
                  this,
                  null,
                  method,
                  MapEvent.REMOVE);
          
          mediator.fireCallbackMethodEvent(e);
      }
  
      /**
       * @return unique action name
       */
      public static String getActionName() {
          return ACTION_NAME;
      }
  
      /**
       * @return CallbackMap fom which remove callback method
       */
      public CallbackMap getCallbackMap() {
          return getProjectController().getCurrentObjEntity().getCallbackMap();
      }
  
      public String getActionName(boolean multiple) {
          return multiple ? ACTION_NAME_MULTIPLE : ACTION_NAME;
      }
  }
  
  