Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibWeb/CSS/LengthBox.h

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/CSS/PercentageOr.h>
+
+namespace Web::CSS {
+
+class LengthBox {
+public:
+    LengthBox();
+    LengthBox(LengthPercentage top, LengthPercentage right, LengthPercentage bottom, LengthPercentage left);
+    ~LengthBox();
+
+    // Length (and thus LengthPercentage) includes a RefPtr<CSSMathValue> member, but we can't include the header CSSStyleValue.h as it includes
+    // this file already. To break the cyclic dependency, we must initialize these members in the constructor.
+    LengthPercentage& top() { return m_top; }
+    LengthPercentage& right() { return m_right; }
+    LengthPercentage& bottom() { return m_bottom; }
+    LengthPercentage& left() { return m_left; }
+    LengthPercentage const& top() const { return m_top; }
+    LengthPercentage const& right() const { return m_right; }
+    LengthPercentage const& bottom() const { return m_bottom; }
+    LengthPercentage const& left() const { return m_left; }
+
+    bool operator==(LengthBox const&) const = default;
+
+private:
+    LengthPercentage m_top;
+    LengthPercentage m_right;
+    LengthPercentage m_bottom;
+    LengthPercentage m_left;
+};
+
+}