[vote] In Wicket 1.4 and onwards, remove widening from the list of choices model in DropDownChoice, changing it from IModel> to IModel>

[Timo Rantalaiho]

Background:

  https://issues.apache.org/jira/browse/WICKET-1512

  https://issues.apache.org/jira/browse/WICKET-2126

  http://www.nabble.com/LDM-with-Generics-for-DropDownChoice-td22155211.html


This works:
===== clips ====================================================
     public static void main(String[] args) {
         Foo foo = new Foo();
         foo.bar().add(new String("quux"));
     }

     @SuppressWarnings("unchecked")
     public List<String> bar() {
       List<? extends String> list = new ArrayList<String>(Arrays.asList("foo", 
"bar"));
       return (List<String>) list;
     }
===== /clips ===================================================


This doesn't work:
===== claps ====================================================
     public static void main(String[] args) {
         Foo foo = new Foo();
         foo.bar().add(new String("quux"));
     }

     public List<? extends String> bar() {
       List<? extends String> list = new ArrayList<String>(Arrays.asList("foo", 
"bar"));
       return list;
     }
===== /claps ===================================================



[ ] Yes, change the DropDownChoice constructor to take the
    choices list as IModel<List<T>> or List<T> without the
    wildcard

[ ] No, keep DropDownChoice as it is in Wicket 1.4-rc2



Best wishes,
Timo

-- 
Timo Rantalaiho           
Reaktor Innovations Oy    <URL: http://www.ri.fi/ >

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