- From: Dimitri Glazkov <dglazkov@google.com>
- Date: Thu, 16 Dec 2010 13:03:09 -0800
- To: Olli@pettay.fi
- Cc: "Tab Atkins Jr." <jackalmage@gmail.com>, Boris Zbarsky <bzbarsky@mit.edu>, public-webapps <public-webapps@w3.org>
On Thu, Dec 16, 2010 at 12:23 PM, Olli Pettay <Olli.Pettay@helsinki.fi> wrote: > On 12/16/2010 11:52 AM, Tab Atkins Jr. wrote: >> >> On Thu, Dec 16, 2010 at 10:40 AM, Boris Zbarsky<bzbarsky@mit.edu> wrote: >>> >>> On 12/15/10 11:29 AM, Dimitri Glazkov wrote: >>>> >>>> That seems like an implementation detail. Metadata can be shared and >>>> cloned as needed, just like styles in CSS. >>> >>> Sort of. It would need to be cloned as soon as the shadow tree is >>> mutated, >>> right? That seems like very fragile behavior from a web author point of >>> view, where it's easy to deoptimize without realizing it. >> >> At least we can produce simple advice on how to definitely avoid >> deoptimizing - stick with the declarative syntax and don't mutate the >> shadow. >> >> With luck, enough use-cases will be solveable with the declarative >> syntax that this will be an acceptable restriction. > > Well, at least with XBL1 modifying the shadow tree is very common. > And I would assume that to be rather common with XBL2 too. Yes. > > > -Olli > > >> >> ~TJ >> >> > >
Received on Thursday, 16 December 2010 21:03:39 UTC