Start line:  
End line:  

Snippet Preview

Snippet HTML Code

Stack Overflow Questions
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. /
 
 package org.apache.cayenne.modeler.action;
 
 
 
 import  org.apache.cayenne.map.EntityListener;
 import  org.apache.cayenne.map.ObjEntity;
 import  org.apache.cayenne.map.event.MapEvent;
Action class for creating entity listeners on an ObjEntity

Version:
1.0 Oct 30, 2007
 
 public class CreateObjEntityListenerAction extends CayenneAction {

    

    
unique action name
 
     private static final String CREATE_ENTITY_LISTENER = "Create objentity entity listener";

    
Constructor.

Parameters:
application Application instance
 
     public CreateObjEntityListenerAction(Application application) {
         super(getActionName(), application);
     }

    
Constructor for extending classes.

Parameters:
actionName unique action name
application Application instance
 
     protected CreateObjEntityListenerAction(String actionNameApplication application) {
         super(actionNameapplication);
     }

    

Returns:
unique action name
 
     public static String getActionName() {
         return ;
     }

    

Returns:
icon file name for button
 
     public String getIconName() {
         return "icon-create-listener.gif";
     }

    
checks whether the new name of listener class already exists

Parameters:
className entered class name
Returns:
true or false
 
     protected boolean isListenerClassAlreadyExists(String className) {
         return getProjectController().getCurrentObjEntity().getEntityListener(className) != null;
     }

    
base entity listenre creation logic

Parameters:
e event
 
     public void performAction(ActionEvent e) {
         String listenerClass = JOptionPane
                 .showInputDialog("Please enter listener class:");
         if (listenerClass != null && listenerClass.trim().length() > 0) {
             if (isListenerClassAlreadyExists(listenerClass)) {
                JOptionPane.showMessageDialog(
                        null,
                        "Listener class already exists.",
                        "Error creating entity listener",
                        .);
            }
            else {
                ObjEntity objEntity = getProjectController().getCurrentObjEntity();
                EntityListener listener = new EntityListener(listenerClass);
                createEntityListener(objEntitylistener);
                .getUndoManager().addEdit(
                        new CreateEntityListenerUndoableEdit(objEntitylistener));
            }
        }
    }
    public void createEntityListener(ObjEntity objEntity, EntityListener listener) {
        objEntity.addEntityListener(listener);
                new EntityListenerEvent(CreateObjEntityListenerAction.thislistener
                        .getClassName(), listener.getClassName(), MapEvent.ADD));
    }
New to GrepCode? Check out our FAQ X