001// Copyright 2005 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.tapestry.listener;
016
017import org.apache.tapestry.IActionListener;
018import org.apache.tapestry.IComponent;
019import org.apache.tapestry.IRequestCycle;
020
021/**
022 * Filter interface used with {@link org.apache.tapestry.listener.ListenerInvoker}. Implementations
023 * of this filter interface may be plugged into the listener method invocation pipeline. Typical
024 * applications involve handling transactions.
025 * 
026 * @author Howard M. Lewis Ship
027 * @since 4.0
028 */
029public interface ListenerInvokerFilter
030{
031    public void invokeListener(IActionListener listener, IComponent source, IRequestCycle cycle,
032            ListenerInvoker delegate);
033}