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Java > Open Source Codes > org > apache > beehive > controls > api > events > EventDispatcher


1 package org.apache.beehive.controls.api.events;
2 /*
3  * Copyright 2004 The Apache Software Foundation.
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  * $Header:$
18  */

19
20 import java.lang.reflect.InvocationTargetException JavaDoc;
21
22 import org.apache.beehive.controls.api.context.ControlHandle;
23
24 /**
25  * The EventDispatcher interface defines the method signature that a container supporting
26  * the external dispatch of Control events would implement.
27  */

28 public interface EventDispatcher
29 {
30     /**
31      * Dispatches a Control event to a target control.
32      * @param target the target control
33      * @param event the event to deliver to the control
34      * @param args the parameters to the control event
35      * @throws IllegalAccessException the underlying event method is not accessible due to
36      * access control.
37      * @throws IllegalArgumentException the target is not valid, the event is not a valid event
38      * type for the requested target, or the argument types do not match the event
39      * signature.
40      * @throws InvocationTargetException wraps any exception thrown by the underlying event
41      * handler.
42      */

43     public Object JavaDoc dispatchEvent(ControlHandle target, EventRef event, Object JavaDoc [] args)
44                   throws IllegalAccessException JavaDoc, IllegalArgumentException JavaDoc,
45                          InvocationTargetException JavaDoc;
46 }
47
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