Package org.apache.wicket.examples.forminput

Source Code of org.apache.wicket.examples.forminput.FormInput$LocaleChoiceRenderer

/*
* 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.forminput;

import java.net.MalformedURLException;
import java.net.URL;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Locale;

import org.apache.wicket.examples.WicketExamplePage;
import org.apache.wicket.extensions.yui.calendar.DatePicker;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Button;
import org.apache.wicket.markup.html.form.Check;
import org.apache.wicket.markup.html.form.CheckBox;
import org.apache.wicket.markup.html.form.CheckGroup;
import org.apache.wicket.markup.html.form.ChoiceRenderer;
import org.apache.wicket.markup.html.form.DropDownChoice;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.ListMultipleChoice;
import org.apache.wicket.markup.html.form.Radio;
import org.apache.wicket.markup.html.form.RadioChoice;
import org.apache.wicket.markup.html.form.RadioGroup;
import org.apache.wicket.markup.html.form.RequiredTextField;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.markup.html.link.Link;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.ListView;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.model.CompoundPropertyModel;
import org.apache.wicket.model.Model;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.protocol.http.WebRequest;
import org.apache.wicket.util.convert.ConversionException;
import org.apache.wicket.util.convert.IConverter;
import org.apache.wicket.util.convert.MaskConverter;
import org.apache.wicket.validation.validator.NumberValidator;


/**
* Example for form input.
*
* @author Eelco Hillenius
* @author Jonathan Locke
*/
public class FormInput extends WicketExamplePage
{
  /**
   * Form for collecting input.
   */
  private class InputForm extends Form
  {
    /**
     * Construct.
     *
     * @param name
     *            Component name
     */
    public InputForm(String name)
    {
      super(name, new CompoundPropertyModel(new FormInputModel()));

      // Dropdown for selecting locale
      add(new LocaleDropDownChoice("localeSelect"));

      // Link to return to default locale
      add(new Link("defaultLocaleLink")
      {
        public void onClick()
        {
          WebRequest request = (WebRequest)getRequest();
          setLocale(request.getLocale());
        }
      });

      RequiredTextField stringTextField = new RequiredTextField("stringProperty");
      stringTextField.setLabel(new Model("String"));
      add(stringTextField);
      RequiredTextField integerTextField = new RequiredTextField("integerProperty");
      add(integerTextField.add(NumberValidator.POSITIVE));
      add(new RequiredTextField("doubleProperty"));

      // add(new DateTimeField("dateProperty"));
      add(new TextField("dateProperty", Date.class).add(new DatePicker()));

      add(new RequiredTextField("integerInRangeProperty").add(NumberValidator.range(0, 100)));
      add(new CheckBox("booleanProperty"));
      add(new Multiply("multiply"));
      // display the multiply result
      Label multiplyLabel = new Label("multiplyLabel", new PropertyModel(getModel(),
          "multiply"));
      // just for fun, add a border so that our result will be displayed
      // as '[ x ]'
      multiplyLabel.setComponentBorder(new BeforeAndAfterBorder());
      add(multiplyLabel);
      RadioChoice rc = new RadioChoice("numberRadioChoice", NUMBERS).setSuffix("");
      rc.setLabel(new Model("number"));
      rc.setRequired(true);
      add(rc);

      RadioGroup group = new RadioGroup("numbersGroup");
      add(group);
      ListView persons = new ListView("numbers", NUMBERS)
      {
        protected void populateItem(ListItem item)
        {
          item.add(new Radio("radio", item.getModel()));
          item.add(new Label("number", item.getModelObjectAsString()));
        };
      };
      group.add(persons);

      CheckGroup checks = new CheckGroup("numbersCheckGroup");
      add(checks);
      ListView checksList = new ListView("numbers", NUMBERS)
      {
        protected void populateItem(ListItem item)
        {
          item.add(new Check("check", item.getModel()));
          item.add(new Label("number", item.getModelObjectAsString()));
        };
      };
      checks.add(checksList);

      add(new ListMultipleChoice("siteSelection", SITES));

      // TextField using a custom converter.
      add(new TextField("urlProperty", URL.class)
      {
        public IConverter getConverter(final Class type)
        {
          return new IConverter()
          {
            public Object convertToObject(String value, Locale locale)
            {
              try
              {
                return new URL(value.toString());
              }
              catch (MalformedURLException e)
              {
                throw new ConversionException("'" + value + "' is not a valid URL");
              }
            }

            public String convertToString(Object value, Locale locale)
            {
              return value != null ? value.toString() : null;
            }
          };
        }
      });

      // TextField using a mask converter
      add(new TextField("phoneNumberUS", UsPhoneNumber.class)
      {
        public IConverter getConverter(final Class/* <?> */type)
        {
          // US telephone number mask
          return new MaskConverter("(###) ###-####", UsPhoneNumber.class);
        }
      });

      // and this is to show we can nest ListViews in Forms too
      add(new LinesListView("lines"));

      add(new Button("saveButton"));

      add(new Button("resetButton")
      {
        public void onSubmit()
        {
          // just set a new instance of the page
          setResponsePage(FormInput.class);
        }
      }.setDefaultFormProcessing(false));
    }

    /**
     * @see org.apache.wicket.markup.html.form.Form#onSubmit()
     */
    public void onSubmit()
    {
      // Form validation successful. Display message showing edited model.
      info("Saved model " + getModelObject());
    }
  }

  /** list view to be nested in the form. */
  private static final class LinesListView extends ListView
  {

    /**
     * Construct.
     *
     * @param id
     */
    public LinesListView(String id)
    {
      super(id);
      // always do this in forms!
      setReuseItems(true);
    }

    protected void populateItem(ListItem item)
    {
      // add a text field that works on each list item model (returns
      // objects of
      // type FormInputModel.Line) using property text.
      item.add(new TextField("lineEdit", new PropertyModel(item.getModel(), "text")));
    }
  }

  /**
   * Choice for a locale.
   */
  private final class LocaleChoiceRenderer extends ChoiceRenderer
  {
    /**
     * Constructor.
     */
    public LocaleChoiceRenderer()
    {
    }

    /**
     * @see org.apache.wicket.markup.html.form.IChoiceRenderer#getDisplayValue(Object)
     */
    public Object getDisplayValue(Object object)
    {
      Locale locale = (Locale)object;
      String display = locale.getDisplayName(getLocale());
      return display;
    }
  }

  /**
   * Dropdown with Locales.
   */
  private final class LocaleDropDownChoice extends DropDownChoice
  {
    /**
     * Construct.
     *
     * @param id
     *            component id
     */
    public LocaleDropDownChoice(String id)
    {
      super(id, LOCALES, new LocaleChoiceRenderer());

      // set the model that gets the current locale, and that is used for
      // updating the current locale to property 'locale' of FormInput
      setModel(new PropertyModel(FormInput.this, "locale"));
    }

    /**
     * @see org.apache.wicket.markup.html.form.DropDownChoice#onSelectionChanged(java.lang.Object)
     */
    public void onSelectionChanged(Object newSelection)
    {
      // note that we don't have to do anything here, as our property
      // model allready calls FormInput.setLocale when the model is
      // updated

      // force re-render by setting the page to render to the bookmarkable
      // instance, so that the page will be rendered from scratch,
      // re-evaluating the input patterns etc
      setResponsePage(FormInput.class);
    }

    /**
     * @see org.apache.wicket.markup.html.form.DropDownChoice#wantOnSelectionChangedNotifications()
     */
    protected boolean wantOnSelectionChangedNotifications()
    {
      // we want roundtrips when a the user selects another item
      return true;
    }
  }

  /** Relevant locales wrapped in a list. */
  private static final List LOCALES = Arrays.asList(new Locale[] { Locale.ENGLISH,
      new Locale("nl", "NL"), Locale.GERMAN, Locale.SIMPLIFIED_CHINESE, Locale.JAPANESE,
      new Locale("pt", "BR"), new Locale("fa", "IR"), new Locale("da", "DK"),
      new Locale("th", "TH"), new Locale("ru") });

  /** available sites for the multiple select. */
  private static final List SITES = Arrays.asList(new String[] { "The Server Side", "Java Lobby",
      "Java.Net" });

  /** available numbers for the radio selection. */
  static final List NUMBERS = Arrays.asList(new String[] { "1", "2", "3" });

  /**
   * Constructor
   */
  public FormInput()
  {
    // Construct form and feedback panel and hook them up
    final FeedbackPanel feedback = new FeedbackPanel("feedback");
    add(feedback);
    add(new InputForm("inputForm"));
  }

  /**
   * Sets locale for the user's session (getLocale() is inherited from
   * Component)
   *
   * @param locale
   *            The new locale
   */
  public void setLocale(Locale locale)
  {
    if (locale != null)
    {
      getSession().setLocale(locale);
    }
  }
}
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