Hello,

Maybe I'm not very "quick" today, but does that mean that a parent
component will not hold a list of child components anymore ?

or just that it's the child component that will in charge of calling
the right method on the parent to register itself ?

On 1/16/06, Igor Vaynberg <[EMAIL PROTECTED]> wrote:
> hello all,
> we, the core devel group, have been discussing and evaluating a possible
> change we would like to make for the next release and we would like your
> input.
>
> the idea is to remove the Component.add(Component child) method and link
> components via a constructor instead: Component(Component parent, String id)
>
> this has a couple of advantages:
>
> * have access to markup the component is attached to in the constructor.
> that means you can read attributes and initialize your component
> appropriately. it also means we can eliminate the use of attribute modifiers
> for non-dynamic attribute replacement.
>
> * we can fail super-early if there is a mismatch between component and
> markup hierachies. currently we dont fail until render time, with this
> change we can fail in the Component constructor - so before the component is
> actually created. this will give you a line precise error in markup AND java
> code.
>
> * getPage() and getPath() will work in the component's constructor. this is
> really nice for ajax stuff.
>
> the big disadvantage of course is that we will break ALL existing code. it
> is a simple change to fix though. a hybrid of this and add() will not work
> because all links in the chain need to use the new constructor for it to
> work.
>
> we would also provide Component.remove() and Component.readd() which
> remove/readd component to its parent. so the link between parent and child
> is now managed on the child's side instead of the parent's side. this, of
> course, makes it impossible to move components between parents - is there a
> usecase for this?
>
> please provide us with feedback/concerns so we have a better feel for
> requirements out there.
>
> thanks,
> -Igor
>
>
>
>


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