/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.wicket_sapporo.workshop01.page.ajax.timer; import java.util.Date; import org.apache.wicket.ajax.AjaxSelfUpdatingTimerBehavior; import org.apache.wicket.datetime.PatternDateConverter; import org.apache.wicket.datetime.markup.html.basic.DateLabel; import org.apache.wicket.model.AbstractReadOnlyModel; import org.apache.wicket.model.IModel; import org.apache.wicket.util.time.Duration; import org.wicket_sapporo.workshop01.page.WS01TemplatePage; /** * Ajaxを使って指定されたタイミングでコンポーネントを更新するサンプル. * * @author Hiroto Yamakawa */ public class AjaxTimerPage extends WS01TemplatePage { private static final long serialVersionUID = -5835757903211756489L; /** * Construct. */ public AjaxTimerPage() { // コンポーネントがgetObject()を行うたびに、実行結果を返すModel IModel<Date> clockModel = new AbstractReadOnlyModel<Date>() { private static final long serialVersionUID = -8248564653483203932L; @Override public Date getObject() { return new Date(); } }; // 日付を整形して表示できる DateLabel コンポーネントを利用(wicket-datetime.jarが必要) add(new DateLabel("clock", clockModel, new PatternDateConverter("yyyy/MM/dd HH:mm:ss", true)) { private static final long serialVersionUID = -1197321688780742456L; @Override protected void onInitialize() { // onInitialize()には、コンポーネントの初期設定を記述できる super.onInitialize(); // 1秒ごとにコンポーネント部分のみを更新する TimerBehavior add(new AjaxSelfUpdatingTimerBehavior(Duration.seconds(1))); } }); } }