ItemClick Flex组合框中的事件 [英] ItemClick Event in a flex Combobox

问题描述

有没有人知道，有什么办法在Flex ComboBox（或任何类似的）中捕获ItemClick事件。 ）

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.

感谢您抽出时间：）

推荐答案

正如你可以在 mx：ComboBox 源代码中看到的， list是私有的，侦听器 ITEM_CLICK 是私有的，列表本身也是私有的：

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();
    }
}

所以你甚至不能扩展 ComboBox 。

唯一的公共东西是 dropdownFactory ，理论上可以覆盖以某种方式注册创建的下拉列表或创建扩展列表。但是我看到的问题是 ComboBox 不是下拉列表的父级 - PopupManager。这可能使调度（泡沫）事件相当困难。

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.

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