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.extensions.ajax.markup.html; 018 019import org.apache.wicket.ajax.IAjaxIndicatorAware; 020import org.apache.wicket.ajax.markup.html.AjaxFallbackLink; 021import org.apache.wicket.model.IModel; 022 023/** 024 * A variant of the {@link AjaxFallbackLink} that displays a busy indicator while the ajax request 025 * is in progress. 026 * 027 * @since 1.2 028 * 029 * @author Igor Vaynberg (ivaynberg) 030 * @param <T> 031 * type of model 032 * 033 */ 034public abstract class IndicatingAjaxFallbackLink<T> extends AjaxFallbackLink<T> 035 implements 036 IAjaxIndicatorAware 037{ 038 private static final long serialVersionUID = 1L; 039 040 private final AjaxIndicatorAppender indicatorAppender = new AjaxIndicatorAppender(); 041 042 /** 043 * Constructor 044 * 045 * @param id 046 */ 047 public IndicatingAjaxFallbackLink(final String id) 048 { 049 this(id, null); 050 } 051 052 /** 053 * Constructor 054 * 055 * @param id 056 * @param model 057 */ 058 public IndicatingAjaxFallbackLink(final String id, final IModel<T> model) 059 { 060 super(id, model); 061 add(indicatorAppender); 062 } 063 064 @Override 065 public String getAjaxIndicatorMarkupId() 066 { 067 return indicatorAppender.getMarkupId(); 068 } 069 070}