JdbcMapper/controls/src/api/org/apache/beehive/controls/api/events/EventHandler.java

54 lines
2.0 KiB
Java

/*
* 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.
*
* $Header:$
*/
package org.apache.beehive.controls.api.events;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* The EventHandler annotation type is used to mark a method that provides the event handler
* implementation for a Control event.
*/
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD})
public @interface EventHandler
{
/**
* The field name of the Java control event source. This must be an @Control field declared
* on the class defining the event handler method (or on a superclass if the field is not
* declared to be private).
*/
String field();
/**
* The EventSet interface that declares the event. This must be a valid EventSet interface
* associated with the control type of the <code>field</code> member.
*/
Class eventSet();
/**
* The name of the handled event. This must be the name of a method declared on the EventSet
* interface referenced by the <code>eventSet</code> member. The annotated method must have
* an event signature that <b>exactly</b> matches one of the event methods with this name.
*/
String eventName();
}