LibHTML: Finish the block width calculation

Also add horizontal box values to the layout tree dump.

1 files changed, 4 insertions, 0 deletions

diff --git a/Libraries/LibHTML/CSS/StyleValue.h b/Libraries/LibHTML/CSS/StyleValue.h
index dd42aa7a19..11ff210a6a 100644
--- a/Libraries/LibHTML/CSS/StyleValue.h
+++ b/Libraries/LibHTML/CSS/StyleValue.h
@@ -26,6 +26,8 @@ public:
     virtual String to_string() const = 0;
     virtual Length to_length() const { return {}; }
 
+    virtual bool is_auto() const { return false; }
+
 protected:
     explicit StyleValue(Type);
 
@@ -66,6 +68,8 @@ public:
 
     const Length& length() const { return m_length; }
 
+    virtual bool is_auto() const override { return m_length.is_auto(); }
+
 private:
     explicit LengthStyleValue(const Length& length)
         : StyleValue(Type::Length)