How can I display all possible values in a SuggestBox

I would like to display all possible values in a SuggestBox.

Naturally, I have the following code (settingName is a SuggestBox)

settingName.getTextBox().addFocusHand开发者_开发问答ler(new FocusHandler() {
    @Override
    public void onFocus(FocusEvent event) {
      settingName.showSuggestionList();
    }
  });

Unfortunately, the suggestbox displays anything. Of course, the settingName is associated to an oracle with several values inside it.

Am I crazy ?

According to the documentation :

public void showSuggestionList()

Show the current list of suggestions.

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You need to set the defaults to show by suggestOracle.setDefaultSuggestionsFromText(..)

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When showing the list, the SuggestBox will ask the oracle for values to show. If the text box is empty, then requestDefaultSuggestions will be called (which by default calls requestSuggestions).