How to localize enum values in GWT client code?

Question

I am using an enumeration class in my GWT client\'s code to define a set of types.

public enum MyType {

    FIRST_TYPE(\"first\"), SECOND_TYPE(\"second\"), THIR         


        

Answer 1

Maybe this will help you, since it seems to be the gwt way Internationalization

Answer 2

I managed to solve the problem by using GWT's ConstantsWithLookup interface. Here is the solution:

MyType.java

public enum MyType {

    FIRST_TYPE, SECOND_TYPE, THIRD_TYPE;

    private final MyConstantsWithLookup constants = GWT.create(MyConstantsWithLookup.class)

    public String getTitle() {
        return this.constants.getString(this.name());
    }
}

MyConstantsWithLookup.java

public interface MyConstantsWithLookup extends ConstantsWithLookup {

    String FIRST_TYPE();

    String SECOND_TYPE();

    String THIRD_TYPE();
}

MyConstantsWithLookup.properties

FIRST_TYPE = first
SECOND_TYPE = second
THIRD_TYPE = third

Answer 3

I would like to add to @thommyslaw answer that in some cases you may need to pass Enums thru the wire. I mean make them serializable. In such cases putting GWT.create() inside the Enum will not work. Here is where some kind of Singleton Glossary class will be handy, like:

public class LEGlossary {

private static LEGlossary instance=null;
private static final LocalizationEnum localConstants=GWT.create(LocalizationEnum.class);

private LEGlossary(){

}

public static LEGlossary instance(){
    if(instance==null){
        instance=new LEGlossary();
    }
    return instance;
}

public String localizedValue(Enum<?> value){
    return localConstants.getString(value.name());
}


}

Where LocalizationEnum in my case extends ConstantsWithLookup interface. In this way you isolate the localization code on the client and leave the Enum free to pass thru the wire.