wicket-examples/src/main/java/org/apache/wicket/examples/echo/Echo.java

/*
 * 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.examples.echo;

import org.apache.wicket.examples.WicketExamplePage;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.model.PropertyModel;


/**
 * The simplest form application possible. Just prints any user input to a label.
 * 
 * @author Eelco Hillenius
 */
public class Echo extends WicketExamplePage
{
	private String message = "[type your message to the world here]";

	/**
	 * Constructor.
	 */
	public Echo()
	{
		// This model references the page's message property and is
		// shared by the label and form component
		PropertyModel<String> messageModel = new PropertyModel<>(this, "message");

		// The label displays the currently set message
		add(new Label("msg", messageModel));

		// Add a form to change the message. We don't need to do anything
		// else with this form as the shared model is automatically updated
		// on form submits
		Form<?> form = new Form("form");
		form.add(new TextField<>("msgInput", messageModel));
		add(form);
	}

	/**
	 * @return the message
	 */
	public String getMessage()
	{
		return message;
	}

	/**
	 * @param message
	 *            the message to set
	 */
	public void setMessage(String message)
	{
		this.message = message;
	}
}