96736 2012-09-14 01:47:18 -0700 [CSS Regions] Enhance the way element styles in regions are stored and accessed 2022-07-13 09:26:29 -0700 1 1 1 Unclassified WebKit WebCore Misc. 528+ (Nightly build) Unspecified Unspecified RESOLVED WONTFIX P2 Normal --- 97110 1 abucur abucur bfulgham donggwan.kim hyatt mibalan mihnea WebkitBugTracker oldest_to_newest 720443 0 abucur 2012-09-14 01:47:18 -0700 Using region styling is currently an expensive operation because the styles are applied to the whole render tree at once, even though it may not be necessary for some renderers. Also, the caching is made during the tree traversal thus making styling individual elements inefficient. We need to find a better way to apply region styling with the following restrictions: - the region style needs to be applied only locally, to a specific renderer, not the whole render tree - the cache needs to be detached from the style change logic - performance outside of regions is not allowed to decrease 1883077 1 bfulgham 2022-07-13 09:26:29 -0700 CSS Regions were removed in Bug 174978.