Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: e001647e607b10e6b8fa7de9636fb2b1d8fcf05d
https://github.com/WebKit/WebKit/commit/e001647e607b10e6b8fa7de9636fb2b1d8fcf05d
Author: Matthieu Dubet <m_du...@apple.com>
Date: 2025-08-18 (Mon, 18 Aug 2025)
Changed paths:
A LayoutTests/fast/css/nested-media-print-expected.html
A LayoutTests/fast/css/nested-media-print.html
M Source/WebCore/css/StyleRule.cpp
M Source/WebCore/css/StyleRule.h
M Source/WebCore/css/StyleSheetContents.cpp
M Source/WebCore/style/RuleSetBuilder.cpp
M Source/WebCore/style/RuleSetBuilder.h
M Source/WebCore/style/StyleScopeRuleSets.cpp
Log Message:
-----------
[CSS] Fix nesting selector resolution for print
https://bugs.webkit.org/show_bug.cgi?id=297232
rdar://158081814
Reviewed by Antti Koivisto.
The boolean parameter to resolve nesting selector only-once is stopping
print style resolution to work properly because the selectors
are considered already resolved.
This patch completely changes the mechanism for the
necessary only-once nesting selector resolution : instead
of using a boolean, it relies on the fact that a style rule selector list
should never be empty : if it's empty, it is
because it has not been resolved yet.
* LayoutTests/fast/css/nested-media-print-expected.html: Added.
* LayoutTests/fast/css/nested-media-print.html: Added.
* Source/WebCore/css/StyleRule.cpp:
(WebCore::StyleRule::debugDescription const):
(WebCore::StyleRuleWithNesting::debugDescription const):
Improve debug logging
(WebCore::StyleRuleWithNesting::StyleRuleWithNesting):
(WebCore::m_originalSelectorList):
(WebCore::StyleRuleBase::invalidateResolvedSelectorListRecursively):
On CSSOM rule mutation, we need to clear all the child selectors because
they are incorrect now. They will be resolved again correctly at rule set
building.
* Source/WebCore/css/StyleRule.h:
(WebCore::StyleRule::adoptSelectorList):
(WebCore::StyleRule::wrapperAdoptSelectorList): Deleted.
(WebCore::StyleRuleWithNesting::wrapperAdoptOriginalSelectorList): Deleted.
Create a new inline setter for selector list.
Move wrapper* functions which are used by CSSOM to the .cpp file.
* Source/WebCore/css/StyleSheetContents.cpp:
(WebCore::StyleSheetContents::parserAppendRule):
(WebCore::StyleSheetContents::wrapperInsertRule):
Fix the detection of the selector list component count
to use the original selector list.
* Source/WebCore/style/RuleSetBuilder.cpp:
(WebCore::Style::RuleSetBuilder::RuleSetBuilder):
(WebCore::Style::m_shrinkToFit):
(WebCore::Style::RuleSetBuilder::addChildRule):
(WebCore::Style::RuleSetBuilder::addRulesFromSheetContents):
(WebCore::Style::RuleSetBuilder::resolveSelectorListWithNesting):
(WebCore::Style::RuleSetBuilder::addStyleRuleWithSelectorList):
(WebCore::Style::RuleSetBuilder::addStyleRule):
(WebCore::Style::m_builderShouldResolveNesting): Deleted.
* Source/WebCore/style/RuleSetBuilder.h:
* Source/WebCore/style/StyleScopeRuleSets.cpp:
(WebCore::Style::ScopeRuleSets::appendAuthorStyleSheets):
Remove boolean and resolve nesting selector whenever the selector list is empty.
Canonical link: https://commits.webkit.org/298843@main
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