This is simpler than it sounds. "Subclass" means the same as "extend." The easiest way is to create a custom mxml component. For example the below subclasses a text input and give is a default text value:
***the custom component*** <?xml version="1.0" encoding="utf-8"?> <mx:TextInput xmlns:mx="http://www.macromedia.com/2003/mxml"; initialize="initComponent()"> <mx:Script><![CDATA[ private function initComponent():Void { this.text = "default text" } ]]></mx:Script> </mx:TextInput> ***and the test bed*** <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.macromedia.com/2003/mxml"; xmlns="*"> <TextInputExtendedSimple /> </mx:Application> Of course this is trivial, but you get the point. Tracy -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of jamiebadman Sent: Wednesday, June 01, 2005 7:32 AM To: [email protected] Subject: [flexcoders] Re: Hiding 'Null'... --- In [email protected], "alex_harui" <[EMAIL PROTECTED]> wrote: > The TextInput is kind enough to do a toString() on anything passed to > its .text property, which is great for Number and other things, but > is the root of your problem. > > My advice, subclass TextInput and put the null check on the text > setter. > > -Alex Hi, At the risk of sounding stupid (well it's painfully obvious to be honest ;-) )... I've scoured for a good example of how to do this subclassing and can't find anything. There's an article on the Macromedia site called 'A Primer for Building Flex Applications' that seems to *almost* help - but the example doesn't go so far as actually explaining how the subclass is used/referenced. Can anyone point me somewhere that contains a good example of subclassing that I might be able to learn from ? Thanks, Jamie. Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
