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Newsgroups: mozilla.dev.tech.layout
From: Seth Fowler <s...@mozilla.com>
Date: Thu, 11 Oct 2012 11:13:04 -0700
Local: Thurs, Oct 11 2012 2:13 pm
Subject: Re: Why are styles computed lazily?
On Oct 10, 2012, at 2:43 PM, L. David Baron <dba...@dbaron.org> wrote:
> We can never determine for sure that a given struct will
Yes, that's true. You might want the ability to do lazy style
> never need a struct, since a page can always ask for a style in it > via getComputedStyle (except for the rare style context that > couldn't potentially be used from a getComputedStyle call). So I > don't see how we can keep the space optimization without also > keeping the ability to compute lazily. computations, even if your primary strategy was eager, just for cases like this. It'd be interesting to know how often it's beneficial to not just go ahead and compute the styles for e.g. display: none subtrees, though. Presumably they are on the page because eventually some event will cause them to be displayed, right? (Quite hypothetical without data, of course.) - Seth
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