Tapestry 5: Building Web Applications

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Alexander Kolesnikov

"Tapestry 5: Building Web Applications"

locales = locales;
}
public List getOptionGroups()
{
return null;
}
public List getOptions()
{
if (locales != null)
{
List locList =
Chapter 8
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new ArrayList();
String[] locs = locales.split(",");
for (String str : locs)
{
locList.add(new LocaleOptionModel(
new Locale(str)));
}
return locList;
}
return null;
}
}
When creating the LocaleSelectModel, we suppose that the list of supported
locales, passed as a parameter for the constructor, is a string containing language
abbreviations separated by commas, like "en,de". Finally, here is an implementation
of ValueEncoder for Locale:
package com.packtpub.celebrities.util;
import java.util.Locale;
import org.apache.tapestry.ValueEncoder;
public class LocaleEncoder implements ValueEncoder
{
public String toClient(Object obj)
{
Locale loc = (Locale) obj;
return loc.getLanguage();
}
public Object toValue(String str)
{
return new Locale(str);
}
}
Now let's create the component's template, LocaleSwitcher.tml. It might look
like this:

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Alexander Kolesnikov

"Tapestry 5: Building Web Applications"