LibGUI: Add MetricRole and PathRole to GUI::Variant

This is needed for making them editable in the ThemeEditor, like
ColorRole is.

Userland/Libraries/LibGUI/Variant.cpp

@@ -48,6 +48,10 @@ const char* to_string(Variant::Type type)
         return "TextAlignment";
     case Variant::Type::ColorRole:
         return "ColorRole";
+    case Variant::Type::MetricRole:
+        return "MetricRole";
+    case Variant::Type::PathRole:
+        return "PathRole";
     }
     VERIFY_NOT_REACHED();
 }
@@ -93,6 +97,18 @@ Variant::Variant(Gfx::ColorRole value)
     m_value.as_color_role = value;
 }
 
+Variant::Variant(Gfx::MetricRole value)
+    : m_type(Type::MetricRole)
+{
+    m_value.as_metric_role = value;
+}
+
+Variant::Variant(Gfx::PathRole value)
+    : m_type(Type::PathRole)
+{
+    m_value.as_path_role = value;
+}
+
 Variant::Variant(i32 value)
     : m_type(Type::Int32)
 {
@@ -331,6 +347,12 @@ void Variant::copy_from(const Variant& other)
     case Type::ColorRole:
         m_value.as_color_role = other.m_value.as_color_role;
         break;
+    case Type::MetricRole:
+        m_value.as_metric_role = other.m_value.as_metric_role;
+        break;
+    case Type::PathRole:
+        m_value.as_path_role = other.m_value.as_path_role;
+        break;
     case Type::Invalid:
         break;
     }
@@ -373,6 +395,10 @@ bool Variant::operator==(const Variant& other) const
         return m_value.as_text_alignment == other.m_value.as_text_alignment;
     case Type::ColorRole:
         return m_value.as_color_role == other.m_value.as_color_role;
+    case Type::MetricRole:
+        return m_value.as_metric_role == other.m_value.as_metric_role;
+    case Type::PathRole:
+        return m_value.as_path_role == other.m_value.as_path_role;
     case Type::Invalid:
         return true;
     }
@@ -412,6 +438,8 @@ bool Variant::operator<(const Variant& other) const
     case Type::Font:
     case Type::TextAlignment:
     case Type::ColorRole:
+    case Type::MetricRole:
+    case Type::PathRole:
         // FIXME: Figure out how to compare these.
         VERIFY_NOT_REACHED();
     case Type::Invalid:
@@ -468,9 +496,12 @@ String Variant::to_string() const
         }
         return "";
     }
-    case Type::ColorRole: {
+    case Type::ColorRole:
         return String::formatted("Gfx::ColorRole::{}", Gfx::to_string(m_value.as_color_role));
-    }
+    case Type::MetricRole:
+        return String::formatted("Gfx::MetricRole::{}", Gfx::to_string(m_value.as_metric_role));
+    case Type::PathRole:
+        return String::formatted("Gfx::PathRole::{}", Gfx::to_string(m_value.as_path_role));
     case Type::Invalid:
         return "[null]";
     }

Userland/Libraries/LibGUI/Variant.h

@@ -35,6 +35,8 @@ public:
     Variant(const Gfx::Font&);
     Variant(const Gfx::TextAlignment);
     Variant(const Gfx::ColorRole);
+    Variant(const Gfx::MetricRole);
+    Variant(const Gfx::PathRole);
     Variant(const JsonValue&);
     Variant(Color);
 
@@ -65,6 +67,8 @@ public:
         Font,
         TextAlignment,
         ColorRole,
+        MetricRole,
+        PathRole,
     };
 
     bool is_valid() const { return m_type != Type::Invalid; }
@@ -84,6 +88,8 @@ public:
     bool is_font() const { return m_type == Type::Font; }
     bool is_text_alignment() const { return m_type == Type::TextAlignment; }
     bool is_color_role() const { return m_type == Type::ColorRole; }
+    bool is_metric_role() const { return m_type == Type::MetricRole; }
+    bool is_path_role() const { return m_type == Type::PathRole; }
     Type type() const { return m_type; }
 
     bool as_bool() const
@@ -245,6 +251,20 @@ public:
         return m_value.as_color_role;
     }
 
+    Gfx::MetricRole to_metric_role() const
+    {
+        if (type() != Type::MetricRole)
+            return Gfx::MetricRole::NoRole;
+        return m_value.as_metric_role;
+    }
+
+    Gfx::PathRole to_path_role() const
+    {
+        if (type() != Type::PathRole)
+            return Gfx::PathRole::NoRole;
+        return m_value.as_path_role;
+    }
+
     Color to_color(Color default_value = {}) const
     {
         if (type() == Type::Color)
@@ -295,6 +315,8 @@ private:
         Gfx::RGBA32 as_color;
         Gfx::TextAlignment as_text_alignment;
         Gfx::ColorRole as_color_role;
+        Gfx::MetricRole as_metric_role;
+        Gfx::PathRole as_path_role;
         RawPoint as_point;
         RawSize as_size;
         RawRect as_rect;