Re: Suggestbox suggestions not displayed when navigating using arrow keys

Here is a solution without having to change the codebase:

private static class ScrollableDefaultSuggestionDisplay extends SuggestBox.DefaultSuggestionDisplay {
    private Widget suggestionMenu;
   
    @Override
    protected Widget decorateSuggestionList(Widget suggestionList) {
        suggestionMenu = suggestionList;
       
        return suggestionList;
    }
   
    @Override
    protected void moveSelectionDown() {
        super.moveSelectionDown();
        scrollSelectedItemIntoView();
    }
   
    @Override
    protected void moveSelectionUp() {
        super.moveSelectionUp();
        scrollSelectedItemIntoView();
    }
   
    private void scrollSelectedItemIntoView() {
        Element divElement = suggestionMenu.getElement();
        Node tableNode = (Element)divElement.getChild(divElement.getChildCount() - 1);  // Firefox, Chrome have 2, IE has 1
        //                      TABLE     TBODY       TR's
        NodeList<Node> trList = tableNode.getChild(0).getChildNodes();
        for (int trIndex = 0; trIndex < trList.getLength(); ++trIndex) {
            Element trElement = (Element)trList.getItem(trIndex);
            if (((Element)trElement.getChild(0)).getClassName().contains("selected")) {
                trElement.scrollIntoView();
               
                break;
            }
        }
    }
}

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