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LibWeb: Don't apply element inline style to associated pseudo elements

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An element's inline style, if present, should not leak into any pseudo
elements generated by that element.
This commit is contained in:
Andreas Kling 2023-04-02 08:35:03 +02:00
parent eed956b473
commit 620a34a463
Notes: sideshowbarker 2024-07-17 11:06:06 +09:00
4 changed files with 31 additions and 7 deletions
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11
Tests/LibWeb/Layout/expected/css-pseudo-element-should-not-be-affected-by-inline-style.txt Normal file
View file

@ -0,0 +1,11 @@
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (1,1) content-size 798x120 children: not-inline
BlockContainer <body> at (10,10) content-size 780x102 children: not-inline
BlockContainer <div.outer> at (11,11) content-size 100x100 children: not-inline
BlockContainer <(anonymous)> at (12,12) content-size 50x50 children: inline
line 0 width: 0, height: 21.835937, bottom: 21.835937, baseline: 16.914062
frag 0 from TextNode start: 0, length: 0, rect: [12,12 0x21.835937]
""
TextNode <#text>
BlockContainer <div.inner> at (12,64) content-size 98x0 children: inline
TextNode <#text>

13
Tests/LibWeb/Layout/input/css-pseudo-element-should-not-be-affected-by-inline-style.html Normal file
View file

@ -0,0 +1,13 @@
<!DOCTYPE html><html><head><style>
* {
border: 1px solid black;
font: 20px SerenitySans;
}
.outer::before {
display: block;
content: "";
width: 50px;
height: 50px;
border: 1px solid red;
}
</style><head><body><div class="outer" style="height: 100px; width: 100px;"><div class="inner">

12
Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
View file

@ -821,7 +821,7 @@ RefPtr<StyleValue> StyleComputer::resolve_unresolved_style_value(DOM::Element& e
return {};
}
void StyleComputer::cascade_declarations(StyleProperties& style, DOM::Element& element, Vector<MatchingRule> const& matching_rules, CascadeOrigin cascade_origin, Important important) const
void StyleComputer::cascade_declarations(StyleProperties& style, DOM::Element& element, Optional<CSS::Selector::PseudoElement> pseudo_element, Vector<MatchingRule> const& matching_rules, CascadeOrigin cascade_origin, Important important) const
{
for (auto const& match : matching_rules) {
for (auto const& property : verify_cast<PropertyOwningCSSStyleDeclaration>(match.rule->declaration()).properties()) {
@ -837,7 +837,7 @@ void StyleComputer::cascade_declarations(StyleProperties& style, DOM::Element& e
}
}
if (cascade_origin == CascadeOrigin::Author) {
if (cascade_origin == CascadeOrigin::Author && !pseudo_element.has_value()) {
if (auto const* inline_style = verify_cast<ElementInlineCSSStyleDeclaration>(element.inline_style())) {
for (auto const& property : inline_style->properties()) {
if (important != property.important)
@ -907,7 +907,7 @@ ErrorOr<void> StyleComputer::compute_cascaded_values(StyleProperties& style, DOM
// Then we apply the declarations from the matched rules in cascade order:
// Normal user agent declarations
cascade_declarations(style, element, matching_rule_set.user_agent_rules, CascadeOrigin::UserAgent, Important::No);
cascade_declarations(style, element, pseudo_element, matching_rule_set.user_agent_rules, CascadeOrigin::UserAgent, Important::No);
// FIXME: Normal user declarations
@ -915,17 +915,17 @@ ErrorOr<void> StyleComputer::compute_cascaded_values(StyleProperties& style, DOM
element.apply_presentational_hints(style);
// Normal author declarations
cascade_declarations(style, element, matching_rule_set.author_rules, CascadeOrigin::Author, Important::No);
cascade_declarations(style, element, pseudo_element, matching_rule_set.author_rules, CascadeOrigin::Author, Important::No);
// FIXME: Animation declarations [css-animations-1]
// Important author declarations
cascade_declarations(style, element, matching_rule_set.author_rules, CascadeOrigin::Author, Important::Yes);
cascade_declarations(style, element, pseudo_element, matching_rule_set.author_rules, CascadeOrigin::Author, Important::Yes);
// FIXME: Important user declarations
// Important user agent declarations
cascade_declarations(style, element, matching_rule_set.user_agent_rules, CascadeOrigin::UserAgent, Important::Yes);
cascade_declarations(style, element, pseudo_element, matching_rule_set.user_agent_rules, CascadeOrigin::UserAgent, Important::Yes);
// FIXME: Transition declarations [css-transitions-1]

2
Userland/Libraries/LibWeb/CSS/StyleComputer.h
View file

@ -111,7 +111,7 @@ private:
Vector<MatchingRule> author_rules;
};
void cascade_declarations(StyleProperties&, DOM::Element&, Vector<MatchingRule> const&, CascadeOrigin, Important important) const;
void cascade_declarations(StyleProperties&, DOM::Element&, Optional<CSS::Selector::PseudoElement>, Vector<MatchingRule> const&, CascadeOrigin, Important) const;
void build_rule_cache();
void build_rule_cache_if_needed() const;