Package org.apache.wicket.examples.compref

Source Code of org.apache.wicket.examples.compref.RadioChoicePage

/*
* 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.compref;

import java.util.Arrays;
import java.util.List;

import org.apache.wicket.util.io.IClusterable;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.AjaxFormChoiceComponentUpdatingBehavior;
import org.apache.wicket.examples.WicketExamplePage;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.RadioChoice;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.model.CompoundPropertyModel;


/**
* Page with examples on {@link org.apache.wicket.markup.html.form.ListChoice}.
*
* @author Eelco Hillenius
*/
public class RadioChoicePage extends WicketExamplePage
{
  /** available sites for selection. */
  private static final List<String> SITES = Arrays.asList("The Server Side", "Java Lobby", "Java.Net");

  /**
   * Constructor
   */
  public RadioChoicePage()
  {
    final Input input = new Input();
    setDefaultModel(new CompoundPropertyModel<>(input));

    // Add a FeedbackPanel for displaying our messages
    final FeedbackPanel feedbackPanel = new FeedbackPanel("feedback");
    feedbackPanel.setOutputMarkupId(true);
    add(feedbackPanel);

    // Add a form with an onSumbit implementation that sets a message
    Form<?> form = new Form("form")
    {
      @Override
      protected void onSubmit()
      {
        info("input: " + input);
      }
    };
    add(form);

    // Add a radio choice component that uses Input's 'site' property to
    // designate the
    // current selection, and that uses the SITES list for the available
    // options.
    RadioChoice<String> sites = new RadioChoice<>("site", SITES);
    sites.add(new AjaxFormChoiceComponentUpdatingBehavior()
    {
      @Override
      protected void onUpdate(AjaxRequestTarget target)
      {
        info("Selected: " + getComponent().getDefaultModelObjectAsString());
        target.add(feedbackPanel);
      }
    });
    form.add(sites);
  }

  /** Simple data class that acts as a model for the input fields. */
  private static class Input implements IClusterable
  {
    /** the selected site. */
    public String site = SITES.get(0);

    /**
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString()
    {
      return "site = '" + site + "'";
    }
  }

  /**
   * Override base method to provide an explanation
   */
  @Override
  protected void explain()
  {
    String html = "<span valign=\"top\" wicket:id=\"site\">\n"
      + "  <input type=\"radio\">site 1</input>\n"
      + "  <input type=\"radio\">site 2</input>\n" + "</span>";
    String code = "private static final List SITES = Arrays.asList(new String[] { \"The Server Side\", \"Java Lobby\", \"Java.Net\" });\n"
      + "...\n"
      + "&nbsp;&nbsp;&nbsp;&nbsp;// Add a radio choice component that uses the model object's 'site' property to designate the\n"
      + "&nbsp;&nbsp;&nbsp;&nbsp;// current selection, and that uses the SITES list for the available options.\n"
      + "&nbsp;&nbsp;&nbsp;&nbsp;form.add(new RadioChoice(\"site\", SITES));";
    add(new ExplainPanel(html, code));

  }

}
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