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.markup.transformer; 018 019import org.apache.wicket.Component; 020 021/** 022 * A common interface to be implemented by {@link org.apache.wicket.markup.transformer.AbstractOutputTransformerContainer}s 023 * and {@link org.apache.wicket.markup.transformer.AbstractTransformerBehavior}s which 024 * post-process the output markup of a component. 025 * 026 * @author Juergen Donnerstag 027 */ 028@FunctionalInterface 029public interface ITransformer 030{ 031 /** 032 * Will be invoked after all child components have been processed to allow for transforming the 033 * markup generated. 034 * 035 * @param component 036 * The associated Wicket component 037 * @param output 038 * The markup generated by the child components 039 * @return The output which will be appended to the original response 040 * @throws Exception 041 */ 042 CharSequence transform(final Component component, final CharSequence output) throws Exception; 043}