diff --git a/Tests/LibWeb/Layout/expected/grid/place-items-center.txt b/Tests/LibWeb/Layout/expected/grid/place-items-center.txt
new file mode 100644
index 0000000000..2259da2898
--- /dev/null
+++ b/Tests/LibWeb/Layout/expected/grid/place-items-center.txt
@@ -0,0 +1,8 @@
+Viewport <#document> at (0,0) content-size 800x600 children: not-inline
+ BlockContainer at (1,1) content-size 798x37.46875 [BFC] children: not-inline
+ Box
at (10,10) content-size 780x19.46875 [GFC] children: not-inline
+ BlockContainer at (362.9375,11) content-size 74.125x17.46875 [BFC] children: inline
+ line 0 width: 74.125, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+ frag 0 from TextNode start: 0, length: 8, rect: [362.9375,11 74.125x17.46875]
+ "Download"
+ TextNode <#text>
diff --git a/Tests/LibWeb/Layout/input/grid/place-items-center.html b/Tests/LibWeb/Layout/input/grid/place-items-center.html
new file mode 100644
index 0000000000..6984595cb3
--- /dev/null
+++ b/Tests/LibWeb/Layout/input/grid/place-items-center.html
@@ -0,0 +1,9 @@
+
Download
\ No newline at end of file
diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index 2ca8ccccf3..107dccccfe 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -110,6 +110,7 @@ set(SOURCES
CSS/StyleValues/NumberStyleValue.cpp
CSS/StyleValues/OverflowStyleValue.cpp
CSS/StyleValues/PlaceContentStyleValue.cpp
+ CSS/StyleValues/PlaceItemsStyleValue.cpp
CSS/StyleValues/PositionStyleValue.cpp
CSS/StyleValues/RadialGradientStyleValue.cpp
CSS/StyleValues/RectStyleValue.cpp
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index a974ddc543..bfea495df3 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -70,6 +70,7 @@
#include
#include
#include
+#include
#include
#include
#include
@@ -6222,6 +6223,25 @@ ErrorOr> Parser::parse_place_content_value(Vector> Parser::parse_place_items_value(Vector const& component_values)
+{
+ auto tokens = TokenStream { component_values };
+ auto maybe_align_items_value = TRY(parse_css_value_for_property(PropertyID::AlignItems, tokens));
+ if (!maybe_align_items_value)
+ return nullptr;
+
+ if (component_values.size() == 1) {
+ if (!property_accepts_identifier(PropertyID::JustifyItems, maybe_align_items_value->to_identifier()))
+ return nullptr;
+ return PlaceItemsStyleValue::create(*maybe_align_items_value, *maybe_align_items_value);
+ }
+
+ auto maybe_justify_items_value = TRY(parse_css_value_for_property(PropertyID::JustifyItems, tokens));
+ if (!maybe_justify_items_value)
+ return nullptr;
+ return PlaceItemsStyleValue::create(*maybe_align_items_value, *maybe_justify_items_value);
+}
+
ErrorOr> Parser::parse_text_decoration_value(Vector const& component_values)
{
RefPtr decoration_line;
@@ -7456,6 +7476,10 @@ Parser::ParseErrorOr> Parser::parse_css_value(Property
if (auto parsed_value = FIXME_TRY(parse_place_content_value(component_values)))
return parsed_value.release_nonnull();
return ParseError::SyntaxError;
+ case PropertyID::PlaceItems:
+ if (auto parsed_value = FIXME_TRY(parse_place_items_value(component_values)))
+ return parsed_value.release_nonnull();
+ return ParseError::SyntaxError;
case PropertyID::TextDecoration:
if (auto parsed_value = FIXME_TRY(parse_text_decoration_value(component_values)))
return parsed_value.release_nonnull();
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
index ee015dc657..75c17a6749 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
@@ -326,6 +326,7 @@ private:
ErrorOr> parse_list_style_value(Vector const&);
ErrorOr> parse_overflow_value(Vector const&);
ErrorOr> parse_place_content_value(Vector const&);
+ ErrorOr> parse_place_items_value(Vector const&);
enum class AllowInsetKeyword {
No,
Yes,
diff --git a/Userland/Libraries/LibWeb/CSS/Properties.json b/Userland/Libraries/LibWeb/CSS/Properties.json
index 979a47c8c8..906a725f1f 100644
--- a/Userland/Libraries/LibWeb/CSS/Properties.json
+++ b/Userland/Libraries/LibWeb/CSS/Properties.json
@@ -1765,6 +1765,14 @@
"justify-content"
]
},
+ "place-items": {
+ "inherited": false,
+ "initial": "normal",
+ "longhands": [
+ "align-items",
+ "justify-items"
+ ]
+ },
"pointer-events": {
"affects-layout": false,
"inherited": true,
diff --git a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
index da74165e57..0733ddfd25 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
@@ -54,6 +54,7 @@
#include
#include
#include
+#include
#include
#include
#include
@@ -432,6 +433,19 @@ static void set_property_expanding_shorthands(StyleProperties& style, CSS::Prope
return;
}
+ if (property_id == CSS::PropertyID::PlaceItems) {
+ if (value.is_place_items()) {
+ auto const& place_items = value.as_place_items();
+ style.set_property(CSS::PropertyID::AlignItems, place_items.align_items());
+ style.set_property(CSS::PropertyID::JustifyItems, place_items.justify_items());
+ return;
+ }
+
+ style.set_property(CSS::PropertyID::AlignItems, value);
+ style.set_property(CSS::PropertyID::JustifyItems, value);
+ return;
+ }
+
if (property_id == CSS::PropertyID::Border) {
set_property_expanding_shorthands(style, CSS::PropertyID::BorderTop, value, document, declaration);
set_property_expanding_shorthands(style, CSS::PropertyID::BorderRight, value, document, declaration);
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
index 9818569c64..64849832ff 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
@@ -50,6 +50,7 @@
#include
#include
#include
+#include
#include
#include
#include
@@ -318,6 +319,12 @@ PlaceContentStyleValue const& StyleValue::as_place_content() const
return static_cast(*this);
}
+PlaceItemsStyleValue const& StyleValue::as_place_items() const
+{
+ VERIFY(is_place_items());
+ return static_cast(*this);
+}
+
PositionStyleValue const& StyleValue::as_position() const
{
VERIFY(is_position());
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValue.h
index 513dfa2f5e..35df819887 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.h
@@ -126,6 +126,7 @@ public:
Overflow,
Percentage,
PlaceContent,
+ PlaceItems,
Position,
RadialGradient,
Ratio,
@@ -184,6 +185,7 @@ public:
bool is_overflow() const { return type() == Type::Overflow; }
bool is_percentage() const { return type() == Type::Percentage; }
bool is_place_content() const { return type() == Type::PlaceContent; }
+ bool is_place_items() const { return type() == Type::PlaceItems; }
bool is_position() const { return type() == Type::Position; }
bool is_radial_gradient() const { return type() == Type::RadialGradient; }
bool is_ratio() const { return type() == Type::Ratio; }
@@ -241,6 +243,7 @@ public:
OverflowStyleValue const& as_overflow() const;
PercentageStyleValue const& as_percentage() const;
PlaceContentStyleValue const& as_place_content() const;
+ PlaceItemsStyleValue const& as_place_items() const;
PositionStyleValue const& as_position() const;
RadialGradientStyleValue const& as_radial_gradient() const;
RatioStyleValue const& as_ratio() const;
@@ -295,6 +298,7 @@ public:
OverflowStyleValue& as_overflow() { return const_cast(const_cast(*this).as_overflow()); }
PercentageStyleValue& as_percentage() { return const_cast(const_cast(*this).as_percentage()); }
PlaceContentStyleValue& as_place_content() { return const_cast(const_cast(*this).as_place_content()); }
+ PlaceItemsStyleValue& as_place_items() { return const_cast(const_cast(*this).as_place_items()); }
PositionStyleValue& as_position() { return const_cast(const_cast(*this).as_position()); }
RadialGradientStyleValue& as_radial_gradient() { return const_cast(const_cast(*this).as_radial_gradient()); }
RatioStyleValue& as_ratio() { return const_cast(const_cast(*this).as_ratio()); }
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/PlaceItemsStyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValues/PlaceItemsStyleValue.cpp
new file mode 100644
index 0000000000..efe0187bea
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/PlaceItemsStyleValue.cpp
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2023, Aliaksandr Kalenik
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "PlaceItemsStyleValue.h"
+
+namespace Web::CSS {
+
+ErrorOr PlaceItemsStyleValue::to_string() const
+{
+ return String::formatted("{} {}", TRY(m_properties.align_items->to_string()), TRY(m_properties.justify_items->to_string()));
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/PlaceItemsStyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValues/PlaceItemsStyleValue.h
new file mode 100644
index 0000000000..1a0e9ac627
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/PlaceItemsStyleValue.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2023, Aliaksandr Kalenik
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include
+
+namespace Web::CSS {
+
+class PlaceItemsStyleValue final : public StyleValueWithDefaultOperators {
+public:
+ static ErrorOr> create(ValueComparingNonnullRefPtr align_items, ValueComparingNonnullRefPtr justify_items)
+ {
+ return adopt_nonnull_ref_or_enomem(new (nothrow) PlaceItemsStyleValue(move(align_items), move(justify_items)));
+ }
+ virtual ~PlaceItemsStyleValue() override = default;
+
+ ValueComparingNonnullRefPtr align_items() const { return m_properties.align_items; }
+ ValueComparingNonnullRefPtr justify_items() const { return m_properties.justify_items; }
+
+ virtual ErrorOr to_string() const override;
+
+ bool properties_equal(PlaceItemsStyleValue const& other) const { return m_properties == other.m_properties; }
+
+private:
+ PlaceItemsStyleValue(ValueComparingNonnullRefPtr align_items, ValueComparingNonnullRefPtr justify_items)
+ : StyleValueWithDefaultOperators(Type::PlaceItems)
+ , m_properties { .align_items = move(align_items), .justify_items = move(justify_items) }
+ {
+ }
+
+ struct Properties {
+ ValueComparingNonnullRefPtr align_items;
+ ValueComparingNonnullRefPtr justify_items;
+ bool operator==(Properties const&) const = default;
+ } m_properties;
+};
+
+}
diff --git a/Userland/Libraries/LibWeb/Forward.h b/Userland/Libraries/LibWeb/Forward.h
index 80fc0ff4ee..a79bb1be43 100644
--- a/Userland/Libraries/LibWeb/Forward.h
+++ b/Userland/Libraries/LibWeb/Forward.h
@@ -146,6 +146,7 @@ class Percentage;
class PercentageOrCalculated;
class PercentageStyleValue;
class PlaceContentStyleValue;
+class PlaceItemsStyleValue;
class PositionStyleValue;
class PropertyOwningCSSStyleDeclaration;
class RadialGradientStyleValue;