001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.wicket.feedback; 018 019import java.util.function.Predicate; 020 021import org.apache.wicket.util.io.IClusterable; 022 023/** 024 * Interface for filtering feedback messages. 025 * 026 * @author Jonathan Locke 027 */ 028@FunctionalInterface 029public interface IFeedbackMessageFilter extends IClusterable, Predicate<FeedbackMessage> 030{ 031 /** 032 * Filter that returns simply all available messages. 033 */ 034 IFeedbackMessageFilter ALL = message -> true; 035 036 /** 037 * Filter that does not match any message 038 */ 039 IFeedbackMessageFilter NONE = message -> false; 040 041 /** 042 * @param message 043 * The message to test for inclusion 044 * @return True if the message should be included, false to exclude it 045 */ 046 boolean accept(FeedbackMessage message); 047 048 @Override 049 default boolean test(FeedbackMessage message) { 050 return accept(message); 051 } 052}