Hi,
responding to the first question;
Why not use styles for that? We as developers need to understand there are 3
interfaces into a UIComponent.
1. Events
2. Styles
3. Class API
With that said, dealing with your example class;
public class LabeledRenderer2 extends UIComponent implements IDataRenderer
{
...
public function LabeledRenderer2():void
{
super();
}
override protected function createChildren():void
{
super.createChildren();
_label = new Label();
_label.styleName = this;
addChild(_label);
}
}
Then you can use this to default and also have the ability to change things
a runtime in a cascading way.
LabeledRenderer2 {
color:#FFFFFF;
fontWeight:"bold";
etc...
}
or
var style:CSSStyleDeclaration = StyleManager.getStyleDeclaration("");
style.setStyle("color", 0x242424);
Is the right way to do it.
Keep in mind, when you develop a lot you will more than likely someday reuse
this code.
This is utilizing the the Style interface the way it should in a balanced
way.
Peace, Mike
On 9/7/07, Ely Greenfield <[EMAIL PROTECTED]> wrote:
>
>
>
>
>
>
>
> The answer is: Generally, yes, subclasses can add or modify arguments.
> But in scenarios where you are passing a class around to be instantiated by
> other code, your class constructor needs to conform to whatever contract is
> defined by that code.
>
>
>
> In this case, the contract defined by charts is a little different. They
> don't get passed a Class, but rather an implementation of IFactory.
> Normally, you specify the class in MXML, and the compiler automatically
> creates that instance for you. But you could create your own instance of
> IFactory that does whatever it wants. For example, you could write an
> IFactory implementation that has a 'color' property which it passes to the
> constructor it instantiates.
>
> Ely.
>
>
>
>
>
> *From:* [email protected] [mailto:[EMAIL PROTECTED] *On
> Behalf Of *barry.beattie
> *Sent:* Thursday, September 06, 2007 11:27 PM
> *To:* [email protected]
> *Subject:* [flexcoders] constructors in extended components: can they take
> arguments?
>
>
>
> the docs seem to hint "no" because (in this case) it changes the
> signature from the base class ... but I just need to check.
>
> within a chart I'm using the itemRenderer for each series in a BarSet.
> I need some way to tell it that it's processing a different series
> than the one before so it'll use a different fill colour. Passing in a
> simple number from the MXML would be so handy here...
>
> public class LabeledRenderer2 extends UIComponent implements IDataRenderer
> {
> ...
> public function LabeledRenderer2():void
> {
> super();
> _label = new Label();
> addChild(_label);
> _label.setStyle("color", 0xFFFFFF);
> }
>
>
>
>
--
Teoti Graphix
http://www.teotigraphix.com
Blog - Flex2Components
http://www.flex2components.com
You can find more by solving the problem then by 'asking the question'.
