/*
* 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)));
}
});
}
}