Question

Does anyone know, is there any way to catch ItemClick Event in a Flex ComboBox (or anything similar). Maybe there’s any trick .. 🙂 I do realize, that I can customize it, but this not suits my case.

Thanks for your time 🙂

Answer 1

As you can see in mx:ComboBox sources, the function, creating the dropdown list, is private, the listener to ITEM_CLICK is private and the list itself is also private:

private var _dropdown:ListBase;

private function getDropdown():ListBase
{
        // ...

        _dropdown = dropdownFactory.newInstance();

        // ...

        _dropdown.addEventListener(ListEvent.ITEM_CLICK, dropdown_itemClickHandler);

        // ....
}

private function dropdown_itemClickHandler(event:ListEvent):void
{
    if (_showingDropdown)
    {
        close();
    }
}

So you can not even extend ComboBox.

The only public thing is dropdownFactory, which theoretically can be overriden to somehow register the created dropdown list or create extended list. But the problem I see is that ComboBox is not the parent of dropdown list – PopupManager is. This can make dispatching (bubble) events quite difficult.