我可以将 Flex 组件属性绑定到函数吗? [英] Can I bind a Flex component property to a function?

问题描述

我想根据具有一个或多个参数的函数的返回值在按钮上设置 enabled 属性.我该怎么做?

I want to set the enabled property on a button based on the return value of a function that has one or more parameters. How can I do this?

private function isUserAllowed (userName:Boolean):Boolean {
   if (userName == 'Tom')
      return true;
   if (userName == 'Bill')
      return false;
}

<mx:Button label="Create PO" id="createPOButton"
enabled="<I want to call isUserAllowed ('Bill') or isUserAllowed ('Tom') here>"
click="createPOButton_Click()" />

推荐答案

<mx:Button
enabled = "{this.myFunction(this.myVariable)}"
>

或内联:

<mx:Button
enabled = "{(function(arg:Object):Boolean{ ... })(this.myVariable)}"
>

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