Sorry, if an object is an instance of a class, it can't be changed at
runtime to be an instance of a different class.
I think you could make a <mx:TextInput> tag produce a TextInputSpecial
instance by editing the mxml-manifest.xml file which maps MXML tags to
AS classes, but this would be confusing and I don't recommend it.
You can, however, create your own namespace with its own manifest so
that you can write
<special:TextInput>
and map it to TextInputSpecial.
Or you can call your subclass TextInput instead of TextInputSpecial and
it will be distinct from ours because it will be in a separate package.
You should be able to do something like
package special
{
import mx.controls.TextInput;
public class special.TextInput extends mx.controls.TextInput
{
...
}
}
- Gordon
-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED] On
Behalf Of alpharythms
Sent: Thursday, April 06, 2006 1:07 PM
To: [email protected]
Subject: [flexcoders] Re: What is the best way to add a variable to a
component that already exist?
Thanks Gordon,
Is there a way to turn a TextInput into a TextInputSpecial at runtime?
Or a way to say all <mx:TextInput ..> tags use instances of
TextInputSpecial instead?
Initially I wanted to have some variables available in a change
handler so I could pull it out by event.target.myExtraStuff, but I
ended up dynamically creating the event.CHANGE functions to include
the data I need.
I'm still curious if it is possible to dynamically re-type something
at runtime. The only way I could see it working if the new type is an
extened class of the orginal. I imagine you can't do this...
Thanks again,
Adam
--- In [email protected], "Gordon Smith" <[EMAIL PROTECTED]> wrote:
>
> The Flex component classes like TextInput aren't dynamic, so you can't
> add any properties to them that aren't declared at compile time.
>
> However, if you create a dynamic subclass
>
> public dynamic class TextInputSpecial extends TextInput
> {
> ...
> }
>
> you should be able to add anything you want at runtime:
>
>
> myTextInputSpecial.foo = "bar";
>
> Alternately, you can make a non-dynamic subclass which has an Object
var
> to which you can add things dynamically, because the Object class is
> dynamic:
>
> public class TextInputSpecial extends TextInput
> {
> var extraStuff:Object = {};
> ...
> }
>
> myTextInputSpecial.extraStuff.foo = "bar:
>
> - Gordon
>
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