001// Copyright 2010, 2011 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry5.services; 016 017import org.apache.tapestry5.runtime.Component; 018import org.apache.tapestry5.runtime.ComponentEvent; 019 020/** 021 * Interface used with {@link org.apache.tapestry5.services.transform.TransformationSupport#addEventHandler(String, int, String, ComponentEventHandler)}} (and, in the old 022 * API, {@link ClassTransformation#addComponentEventHandler(String, int, String, ComponentEventHandler)}). 023 * 024 * @since 5.2.0 025 */ 026public interface ComponentEventHandler 027{ 028 /** 029 * Handles the event. 030 */ 031 void handleEvent(Component instance, ComponentEvent event); 032}