LibWeb: Split ResolutionStyleValue out of StyleValue.{h,cpp}

Userland/Libraries/LibWeb/CSS/StyleValues/ResolutionStyleValue.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2022-2023, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/CSS/Resolution.h>
+#include <LibWeb/CSS/StyleValue.h>
+
+namespace Web::CSS {
+
+class ResolutionStyleValue : public StyleValueWithDefaultOperators<ResolutionStyleValue> {
+public:
+    static ValueComparingNonnullRefPtr<ResolutionStyleValue> create(Resolution resolution)
+    {
+        return adopt_ref(*new ResolutionStyleValue(move(resolution)));
+    }
+    virtual ~ResolutionStyleValue() override = default;
+
+    Resolution const& resolution() const { return m_resolution; }
+
+    virtual ErrorOr<String> to_string() const override { return m_resolution.to_string(); }
+
+    bool properties_equal(ResolutionStyleValue const& other) const { return m_resolution == other.m_resolution; }
+
+private:
+    explicit ResolutionStyleValue(Resolution resolution)
+        : StyleValueWithDefaultOperators(Type::Resolution)
+        , m_resolution(move(resolution))
+    {
+    }
+
+    Resolution m_resolution;
+};
+
+}