package org.apache.beehive.controls.api.events;
/*
* Copyright 2004 The Apache Software Foundation.
*
* Licensed 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.
*
* $Header:$
*/
import java.lang.reflect.InvocationTargetException;
import org.apache.beehive.controls.api.context.ControlContainerContext;
import org.apache.beehive.controls.api.context.ControlHandle;
import org.apache.beehive.controls.api.context.ControlThreadContext;
/**
* The EventDispatchHelper class is a simple implementation of the EventDispatcher interface
* that is suitable for use <b>inside</b> the execution context of a control container. It
* assumes that you are already running inside the target container instance, and all that is
* required is the correct routing of the event to the correct control.
*/
public class EventDispatchHelper implements EventDispatcher
{
public Object dispatchEvent(ControlHandle target, EventRef event, Object [] args)
throws IllegalAccessException, IllegalArgumentException,
InvocationTargetException
{
//
// Obtain the current active control container context
//
ControlContainerContext context = ControlThreadContext.getContext();
if (context == null)
throw new IllegalStateException("No active control container context");
//
// Dispatch the event using it.
//
return context.dispatchEvent(target, event, args);
}
}