From 0448547553815c5f4243befb5ee91c08508e720c Mon Sep 17 00:00:00 2001
From: martinfalisse <martinmotteditfalisse@gmail.com>
Date: Mon, 16 Jan 2023 17:33:30 +0100
Subject: [PATCH] LibWeb: Parse min and max-content

Parse min and max-content as well as use its values in the GridTrackSize
class.
---
 Userland/Libraries/LibWeb/CSS/GridTrackSize.cpp | 11 +++++++++++
 Userland/Libraries/LibWeb/CSS/GridTrackSize.h   | 12 ++++++++----
 Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp |  4 ++++
 3 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/Userland/Libraries/LibWeb/CSS/GridTrackSize.cpp b/Userland/Libraries/LibWeb/CSS/GridTrackSize.cpp
index 5df3bbb188..d498d2df15 100644
--- a/Userland/Libraries/LibWeb/CSS/GridTrackSize.cpp
+++ b/Userland/Libraries/LibWeb/CSS/GridTrackSize.cpp
@@ -33,6 +33,13 @@ GridSize::GridSize(float flexible_length)
 {
 }
 
+GridSize::GridSize(Type type)
+    : m_length { Length::make_auto() }
+{
+    VERIFY(type == Type::MinContent || type == Type::MaxContent);
+    m_type = type;
+}
+
 GridSize::GridSize()
     : m_length { Length::make_auto() }
 {
@@ -54,6 +61,10 @@ ErrorOr<String> GridSize::to_string() const
         return m_percentage.to_string();
     case Type::FlexibleLength:
         return String::formatted("{}fr", m_flexible_length);
+    case Type::MaxContent:
+        return String::from_utf8("max-content"sv);
+    case Type::MinContent:
+        return String::from_utf8("min-content"sv);
     }
     VERIFY_NOT_REACHED();
 }
diff --git a/Userland/Libraries/LibWeb/CSS/GridTrackSize.h b/Userland/Libraries/LibWeb/CSS/GridTrackSize.h
index 3f6bb4500c..c7ab424df8 100644
--- a/Userland/Libraries/LibWeb/CSS/GridTrackSize.h
+++ b/Userland/Libraries/LibWeb/CSS/GridTrackSize.h
@@ -18,12 +18,14 @@ public:
         Length,
         Percentage,
         FlexibleLength,
-        // TODO: Max-Content
+        MaxContent,
+        MinContent,
     };
 
     GridSize(Length);
     GridSize(Percentage);
     GridSize(float);
+    GridSize(Type);
     GridSize();
     ~GridSize();
 
@@ -34,17 +36,19 @@ public:
     bool is_length() const { return m_type == Type::Length; }
     bool is_percentage() const { return m_type == Type::Percentage; }
     bool is_flexible_length() const { return m_type == Type::FlexibleLength; }
+    bool is_max_content() const { return m_type == Type::MaxContent; }
+    bool is_min_content() const { return m_type == Type::MinContent; }
 
     Length length() const;
     Percentage percentage() const { return m_percentage; }
     float flexible_length() const { return m_flexible_length; }
 
-    // https://drafts.csswg.org/css-grid/#layout-algorithm
-    // Intrinsic sizing function - min-content, max-content, auto, fit-content()
+    // https://www.w3.org/TR/css-grid-2/#layout-algorithm
+    // An intrinsic sizing function (min-content, max-content, auto, fit-content()).
     // FIXME: Add missing properties once implemented.
     bool is_intrinsic_track_sizing() const
     {
-        return (m_type == Type::Length && m_length.is_auto());
+        return (m_type == Type::Length && m_length.is_auto()) || m_type == Type::MaxContent || m_type == Type::MinContent;
     }
 
     bool is_definite() const
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index daf3e4e157..a1c08a666c 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -5934,6 +5934,10 @@ Optional<CSS::GridSize> Parser::parse_grid_size(ComponentValue const& component_
     }
     if (token.is(Token::Type::Ident) && token.ident().equals_ignoring_case("auto"sv))
         return GridSize::make_auto();
+    if (token.is(Token::Type::Ident) && token.ident().equals_ignoring_case("max-content"sv))
+        return GridSize(GridSize::Type::MaxContent);
+    if (token.is(Token::Type::Ident) && token.ident().equals_ignoring_case("min-content"sv))
+        return GridSize(GridSize::Type::MinContent);
     auto dimension = parse_dimension(token);
     if (!dimension.has_value())
         return {};