zk - 禁用组合框的键控 [英] zk - disable key controls for combobox

问题描述

可以停用 Combobox 的键盘控制功能ZK？

Is it possible to disable the keyboard controls for a Combobox in ZK?

也就是说，当用户在Combobox中输入一些文本时，默认情况下，他们可以使用箭头键来上下移动列表。我想禁用这个功能，因为它不能很好地与我们正在设计的用户体验。

That is, when a user enters some text into a Combobox, by default they can use the arrow keys to move up and down the list. I would like to disable this functionally as it doesn't work well with the user experience we are designing.

我在文档中没有看到明确的。

I see nothing in the documentation explicitly.

推荐答案

您可以覆盖_doKeyDown js函数，

You can override _doKeyDown js function,

例如，

<zk xmlns:w="client">
    <combobox>
        <attribute w:name="_doKeyDown"><![CDATA[
            function (evt) {
                var keyCode = evt.keyCode;
                if (keyCode != 38 && keyCode != 40) {
                    this.$_doKeyDown(evt);
                }
            }
        ]]></attribute>
        <comboitem label="item one" />
        <comboitem label="item two" />
        <comboitem label="item three" />
    </combobox>
</zk>

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