/* * 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.event; import java.util.Date; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior; import org.apache.wicket.ajax.form.OnChangeAjaxBehavior; import org.apache.wicket.datetime.PatternDateConverter; import org.apache.wicket.datetime.markup.html.basic.DateLabel; import org.apache.wicket.markup.ComponentTag; import org.apache.wicket.markup.MarkupStream; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.TextArea; import org.apache.wicket.model.AbstractReadOnlyModel; import org.apache.wicket.model.IModel; import org.apache.wicket.model.Model; import org.wicket_sapporo.workshop01.page.WS01TemplatePage; /** * EventSamplePage をWicketのイベントシステムを使わずに書いたもの.<br> * 更新されるコンポーネントの更新タイミングはスイッチとなるコンポーネントが指定しなくてはいけない。 final句も余計に必要。 * * @author Hiroto Yamakawa */ public class NoEventSamplePage extends WS01TemplatePage { private static final long serialVersionUID = 3136864952762442212L; /** * Construct. */ public NoEventSamplePage() { Form<Void> form = new Form<Void>("form"); add(form); IModel<String> textAreaModel = Model.of(""); final Label countLabel = new Label("count", textAreaModel) { private static final long serialVersionUID = -6522874730737908773L; @Override protected void onInitialize() { super.onInitialize(); setOutputMarkupId(true); } @Override public void onComponentTagBody(MarkupStream markupStream, ComponentTag openTag) { // タグの内容を、textAreaModelの内容ではなく、textAreaModelの内容の長さにする replaceComponentTagBody(markupStream, openTag, Integer.toString(getDefaultModelObjectAsString().length())); } }; add(countLabel); IModel<Date> dateModel = new AbstractReadOnlyModel<Date>() { private static final long serialVersionUID = 6131028671074353551L; @Override public Date getObject() { return new Date(); } }; final Label dateLabel = new DateLabel("date", dateModel, new PatternDateConverter("yyyy/MM/dd HH:mm:ss", true)) { private static final long serialVersionUID = 3105270954232202288L; @Override protected void onInitialize() { super.onInitialize(); setOutputMarkupId(true); } }; add(dateLabel); form.add(new TextArea<String>("textarea", textAreaModel) { private static final long serialVersionUID = -4029463555425282985L; @Override protected void onInitialize() { super.onInitialize(); // ブラウザの onChange イベントが発生したときの処理 add(new OnChangeAjaxBehavior() { private static final long serialVersionUID = 7052329505898708783L; @Override protected void onUpdate(AjaxRequestTarget target) { // countLabel 変数のコンポーネントを更新 target.add(countLabel); } }); // ブラウザの onBlur イベントが発生したときの処理 add(new AjaxFormComponentUpdatingBehavior("onBlur") { private static final long serialVersionUID = -2982215895565833469L; @Override protected void onUpdate(AjaxRequestTarget target) { // dataLabel 変数のコンポーネントを更新 target.add(dateLabel); } }); } }); } }