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LibWeb/CSS: Parse the container-type property

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This applies size, inline-size, and style containment in some cases.
There are other WPT tests for that, but we seem to not implement enough
of containment for this to have an effect so I've not imported those.

Gets us 35 WPT subtests.
This commit is contained in:
Sam Atkins 2025-09-30 14:48:55 +01:00 • committed by Tim Ledbetter
commit 3916e33276
Notes: github-actions[bot] 2025-09-30 21:07:12 +00:00
17 changed files with 355 additions and 7 deletions
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12
Libraries/LibWeb/CSS/ComputedValues.h
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@ -82,6 +82,14 @@ struct Containment {
bool is_empty() const { return !(size_containment || inline_size_containment || layout_containment || style_containment || paint_containment); }
};
struct ContainerType {
bool is_size_container : 1 { false };
bool is_inline_size_container : 1 { false };
bool is_scroll_state_container : 1 { false };
bool is_empty() const { return !(is_size_container || is_inline_size_container || is_scroll_state_container); }
};
struct ScrollbarColorData {
Color thumb_color { Color::Transparent };
Color track_color { Color::Transparent };
@ -242,6 +250,7 @@ public:
static UserSelect user_select() { return UserSelect::Auto; }
static Isolation isolation() { return Isolation::Auto; }
static Containment contain() { return {}; }
static ContainerType container_type() { return {}; }
static MixBlendMode mix_blend_mode() { return MixBlendMode::Normal; }
static Optional<int> z_index() { return OptionalNone(); }
@ -563,6 +572,7 @@ public:
UserSelect user_select() const { return m_noninherited.user_select; }
Isolation isolation() const { return m_noninherited.isolation; }
Containment const& contain() const { return m_noninherited.contain; }
ContainerType const& container_type() const { return m_noninherited.container_type; }
MixBlendMode mix_blend_mode() const { return m_noninherited.mix_blend_mode; }
Optional<FlyString> view_transition_name() const { return m_noninherited.view_transition_name; }
TouchActionData touch_action() const { return m_noninherited.touch_action; }
@ -841,6 +851,7 @@ protected:
UserSelect user_select { InitialValues::user_select() };
Isolation isolation { InitialValues::isolation() };
Containment contain { InitialValues::contain() };
ContainerType container_type { InitialValues::container_type() };
MixBlendMode mix_blend_mode { InitialValues::mix_blend_mode() };
WhiteSpaceTrimData white_space_trim;
Optional<FlyString> view_transition_name;
@ -1046,6 +1057,7 @@ public:
void set_user_select(UserSelect value) { m_noninherited.user_select = value; }
void set_isolation(Isolation value) { m_noninherited.isolation = value; }
void set_contain(Containment value) { m_noninherited.contain = move(value); }
void set_container_type(ContainerType value) { m_noninherited.container_type = move(value); }
void set_mix_blend_mode(MixBlendMode value) { m_noninherited.mix_blend_mode = value; }
void set_view_transition_name(Optional<FlyString> value) { m_noninherited.view_transition_name = move(value); }
void set_touch_action(TouchActionData value) { m_noninherited.touch_action = value; }