[webkit-changes] [WebKit/WebKit] 321396: Fine-grained invalidation for :host pseudo-class i...

[Antti Koivisto]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 321396c31ca55d74570f52eea689216142d98af1
      https://github.com/WebKit/WebKit/commit/321396c31ca55d74570f52eea689216142d98af1
  Author: Antti Koivisto <antti at apple.com>
  Date:   2023-08-28 (Mon, 28 Aug 2023)

  Changed paths:
    M Source/WebCore/style/AttributeChangeInvalidation.cpp
    M Source/WebCore/style/ClassChangeInvalidation.cpp
    M Source/WebCore/style/IdChangeInvalidation.cpp
    M Source/WebCore/style/PseudoClassChangeInvalidation.cpp
    M Source/WebCore/style/RuleFeature.cpp
    M Source/WebCore/style/StyleInvalidationFunctions.h
    M Source/WebCore/style/StyleInvalidator.cpp
    M Source/WebCore/style/StyleInvalidator.h

  Log Message:
  -----------
  Fine-grained invalidation for :host pseudo-class in non-subject position
https://bugs.webkit.org/show_bug.cgi?id=260791
rdar://problem/114560066

Reviewed by Alan Baradlay.

Handle invalidation of cases like

:host(.foo) bar

efficiently.

* Source/WebCore/style/AttributeChangeInvalidation.cpp:
(WebCore::Style::AttributeChangeInvalidation::invalidateStyle):

Collect any host rules from the shadow tree. This pattern repeats for attribute/id/class/pseudo-class cases.

* Source/WebCore/style/ClassChangeInvalidation.cpp:
(WebCore::Style::ClassChangeInvalidation::computeInvalidation):
* Source/WebCore/style/IdChangeInvalidation.cpp:
(WebCore::Style::IdChangeInvalidation::invalidateStyle):
* Source/WebCore/style/PseudoClassChangeInvalidation.cpp:
(WebCore::Style::PseudoClassChangeInvalidation::collectRuleSets):
* Source/WebCore/style/RuleFeature.cpp:
(WebCore::Style::computeNextMatchElement):
(WebCore::Style::computeHasPseudoClassMatchElement):
(WebCore::Style::RuleFeatureSet::recursivelyCollectFeaturesFromSelector):
* Source/WebCore/style/StyleInvalidationFunctions.h:
(WebCore::Style::traverseRuleFeaturesInShadowTree):

Don't force full shadow tree style recalc by returning mayAffectShadowTree bit in these cases.

* Source/WebCore/style/StyleInvalidator.cpp:
(WebCore::Style::Invalidator::collectRuleInformation):

Collect host rules for id invalidation.

(WebCore::Style::Invalidator::invalidateInShadowTreeIfNeeded):

Traverse the shadow tree if needed.

* Source/WebCore/style/StyleInvalidator.h:

Canonical link: https://commits.webkit.org/267355@main