nestedformspage.java

Wicket一个开发Java Web应用程序框架。它使得开发web应用程序变得容易而轻松。 Wicket利用一个POJO data beans组件使得它可以与任何持久层技术相结合。

/*
 * 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.apache.wicket.markup.html.form;

import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.form.AjaxSubmitLink;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.MarkupStream;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.form.validation.EqualInputValidator;
import org.apache.wicket.markup.html.link.Link;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.model.CompoundPropertyModel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author Gerolf Seitz
 */
public class NestedFormsPage extends WebPage
{
	private static final long serialVersionUID = 1L;
	static Logger logger = LoggerFactory.getLogger(NestedFormsPage.class);

	private final FeedbackPanel feedback;

	/**
	 * Construct.
	 */
	public NestedFormsPage()
	{
		feedback = new FeedbackPanel("feedback");
		add(feedback.setOutputMarkupId(true));

		Form outerForm = new NestableForm("outerForm");
		add(outerForm.setOutputMarkupId(true));

		Form middleForm = new NestableForm("middleForm");
		outerForm.add(middleForm.setOutputMarkupId(true));

		Form innerForm = new NestableForm("innerForm");
		middleForm.add(innerForm.setOutputMarkupId(true));
	}

	public class NestableForm extends Form
	{
		private static final long serialVersionUID = 1L;

		private final String first = "test";

		private final String second = "test";

		public boolean onSubmitCalled = false;

		public boolean onErrorCalled = false;

		public NestableForm(String id)
		{
			super(id);
			setModel(new CompoundPropertyModel(this));

			TextField firstField = new RequiredTextField("first");
			TextField secondField = new TextField("second");
			add(firstField);
			add(secondField);

			add(new EqualInputValidator(firstField, secondField));
			add(new AjaxSubmitLink("ajaxSubmit", this)
			{
				private static final long serialVersionUID = 1L;

				protected void onSubmit(AjaxRequestTarget target, Form form)
				{
					target.addComponent(feedback);
				}

				protected void onError(AjaxRequestTarget target, Form form)
				{
					target.addComponent(feedback);
				}
			});
			add(new ToggleLink("toggle", this));
			add(new SubmitLink("submit"));
		}

		protected void onSubmit()
		{
			super.onSubmit();
			onSubmitCalled = true;
			logger.info(getId() + ".onSubmit");
		}

		protected void onError()
		{
			super.onError();
			onErrorCalled = true;
			logger.info(getId() + ".onError");
		}
	}

	private class ToggleLink extends Link
	{
		private static final long serialVersionUID = 1L;

		private final Form form;

		public ToggleLink(String id, Form form)
		{
			super(id);
			this.form = form;
		}

		public void onClick()
		{
			form.setEnabled(!form.isEnabled());
			form.info(form.getId() + ".isEnabled() == " + form.isEnabled());
		}

		protected void onComponentTagBody(MarkupStream markupStream, ComponentTag openTag)
		{
			String state = form.isEnabled() ? "enabled" : "disabled";
			replaceComponentTagBody(markupStream, openTag, "form is " + state);
		}
	}

}