Flex - 如何在一个组件中定义另一个组件的函数?
我是一名 Flex/Flash 菜鸟,正在运行 Adobe Flash Builder 4 Beta 2。我有一个主要组件,需要能够调用多个弹出窗口,除了一个函数和一些标签之外,每个弹出窗口基本相同。显然,我希望能够定义这个函数并在调用弹出窗口时更改这些标签,而不是拥有大量具有几乎相同代码的 .mxml 文件,我只是不知道该怎么做。我想出了如何更改标签,但不确定如何重新定义函数。
为了简单起见,假设我的代码如下所示:
main.mxml:
<?xml version="1.0" encoding="utf-8"?>
<mx:Module xmlns:fx="http://ns.adobe.com/mxml/2009" :s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/halo" creationComplete="init()">
<fx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.managers.PopUpManager;
protected function init():void
{
var alertWindow:IFlexDisplayObject = PopUpManager.createPopUp(FlexGlobals.topLevelApplication as DisplayObject, popup, true);
PopUpManager.centerPopUp(alertWindow);
var popInstance:transmitRoundPop = alertWindow as transmitRoundPop;
popInstance.btnTest.label = "NEW";
}
]]>
</fx:Script>
</mx:Module>
popup.mxml:
<?xml version="1.0" encoding="utf-8"?>
<s:Group xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/halo" width="400" height="300" xmlns:flash="services.flash.*">
<fx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.managers.PopUpManager;
public function test():void
{
Alert.show("ORIGINAL");
PopUpManager.removePopUp(this);
}
]]>
</fx:Script>
<s:Panel x="10" y="10" width="380" height="280" title="Test" id="pnlTest">
<s:Button x="131" y="104" label="OLD" id="btnTest" click="test()"/>
</s:Panel>
</s:Group>
现在假设我想在 main.mxml 中调用 popup.mxml 时更改 popup.mxml 中的 test()
...我该怎么做?请提供详细信息...记住我是菜鸟:-)
I'm a complete Flex/Flash noob, running Adobe Flash Builder 4 Beta 2. I have a main component that needs to be able to call several popups, each mostly the same except for one function and a few labels. Obviously, I'd prefer to be able to define this function and change those labels when calling the popup instead of having tons of .mxml files with nearly the same code, I just don't know how to do it. I figured out how I can change the labels, but not sure how to redefine the function.
For simplicity's sake, let's say my code looks like this:
main.mxml:
<?xml version="1.0" encoding="utf-8"?>
<mx:Module xmlns:fx="http://ns.adobe.com/mxml/2009" :s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/halo" creationComplete="init()">
<fx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.managers.PopUpManager;
protected function init():void
{
var alertWindow:IFlexDisplayObject = PopUpManager.createPopUp(FlexGlobals.topLevelApplication as DisplayObject, popup, true);
PopUpManager.centerPopUp(alertWindow);
var popInstance:transmitRoundPop = alertWindow as transmitRoundPop;
popInstance.btnTest.label = "NEW";
}
]]>
</fx:Script>
</mx:Module>
popup.mxml:
<?xml version="1.0" encoding="utf-8"?>
<s:Group xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/halo" width="400" height="300" xmlns:flash="services.flash.*">
<fx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.managers.PopUpManager;
public function test():void
{
Alert.show("ORIGINAL");
PopUpManager.removePopUp(this);
}
]]>
</fx:Script>
<s:Panel x="10" y="10" width="380" height="280" title="Test" id="pnlTest">
<s:Button x="131" y="104" label="OLD" id="btnTest" click="test()"/>
</s:Panel>
</s:Group>
Now say I want to change test()
in popup.mxml when calling it in main.mxml...how do I do that? Please include detail...remember I'm a noob :-)
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如果我明白您的要求,您可以将 test() 设为函数变量并授予其公共访问权限,以便其他组件可以更改它。
现在在另一个组件中:
If I get what you're asking, you can make test() a function variable and give it public access so that other components can change it.
Now in another component:
当然,在发布问题后,这个想法立即出现在我的脑海中。我想我应该在这里发布解决方案,而不是仅仅删除问题,以防它对其他人有帮助。
我刚刚从 popup.mxml 中完全取出
test()
并修改了 main.mxml 中的init()
,如下所示:Of course, immediately after posting the question the idea pops into my head. I figured I'd post the solution here instead of just removing the question in case it helps anyone else.
I just took
test()
out completely from popup.mxml and modifiedinit()
in main.mxml to look like this: