[webkit-dev] document()->frame()->script()->globalObject()

[Adam Barth]

Thanks.  This is very helpful.

On Fri, Jul 24, 2009 at 1:18 PM, Darin Adler<darin at apple.com> wrote:
> On Jul 24, 2009, at 11:05 AM, Adam Barth wrote:
>
>> Do you have specific areas you're concerned about that we can be on the
>> lookout for?
>
> I tried to think this through, but only had a few minutes free:
>
> A minor concern is that Frame has a constellation of helper classes to help
> keep it simple, including ScriptController, but Document does not, so this
> change will add more non-“model” things to the Document header, muddying our
> architecture.
>
> There are dormant documents that are in the back/forward cache, and it’s
> important that we not do more work in these. At the moment, it’s possible
> that the fact that frame() is 0 is how certain operations are disabled in
> such things.
>
> The same type of issue could apply to documents that are not in the
> back/forward cache, and no longer in the frame, but still alive for some
> reason.
>
> Creation and teardown seem like the trickiest areas. The timing of creation
> of the global object vs. the document might end up being different than
> today.
>
> The timing issues are likely to be different per-platform because of the
> excessive complexity of the FrameLoaderClient, so we would want to make the
> changes in small steps with a lot of testing.
>
>    -- Darin
>
>