Another reason is that the components hierarchy isn't built yet in the
constructor.
Indeed, when writing add(new MyComponent("id"));, the component is first
constructed and then added.
As such, using methods like getPage() or getForm() in the constructor results
in exceptions being thrown at runtime.
++
_____
From: mbrictson [mailto:[email protected]]
To: [email protected]
Sent: Sat, 03 Apr 2010 01:49:49 +0200
Subject: Re: What about an onInitialRender method ?
Good example. Thanks for clarifying.
igor.vaynberg wrote:
>
> one usecase is when you want the user to be able to change which
> components will be created.
>
> this is bad:
>
> class mycomponent extends panel {
> public mycomponent(string id) { add(newCounter("counter")); }
> protected Component newCounter(String id) { return new Label(id, ....);
> }
> }
>
> because you are calling an overridable method from constructor
>
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