package org.apache.wicket.examples.ajax.builtin;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.form.AjaxFormSubmitBehavior;
import org.apache.wicket.extensions.ajax.markup.html.autocomplete.AutoCompleteTextField;
import org.apache.wicket.markup.html.basic.MultiLineLabel;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.util.string.Strings;
@author
public class AutoCompletePage extends BasePage
{
private StringBuilder values = new StringBuilder();
public AutoCompletePage()
{
Form<Void> form = new Form<>("form");
add(form);
final IModel<String> model = new IModel<String>()
{
private String value = null;
@Override
public String getObject()
{
return value;
}
@Override
public void setObject(String object)
{
value = object;
values.append('\n');
values.append(value);
}
};
final AutoCompleteTextField<String> field = new AutoCompleteTextField<String>("ac", model)
{
@Override
protected Iterator<String> getChoices(String input)
{
if (Strings.isEmpty(input))
{
return Collections.emptyIterator();
}
List<String> choices = new ArrayList<>(10);
Locale[] locales = Locale.getAvailableLocales();
for (final Locale locale : locales)
{
final String country = locale.getDisplayCountry();
if (!choices.contains(country) && country.toUpperCase(Locale.ROOT).startsWith(input.toUpperCase(Locale.ROOT)))
{
choices.add(country);
if (choices.size() == 10)
{
break;
}
}
}
return choices.iterator();
}
};
form.add(field);
final MultiLineLabel label = new MultiLineLabel("history", new PropertyModel<String>(this,
"values"));
label.setOutputMarkupId(true);
form.add(label);
field.add(new AjaxFormSubmitBehavior(form, "change")
{
@Override
protected void onSubmit(AjaxRequestTarget target)
{
target.add(label);
}
@Override
protected void onError(AjaxRequestTarget target)
{
}
});
}
}