1 files changed, 49 insertions, 0 deletions
diff --git a/widget/windows/WindowsUIUtils.h b/widget/windows/WindowsUIUtils.h
new file mode 100644
index 0000000000..5bdde8eadb
--- /dev/null
+++ b/widget/windows/WindowsUIUtils.h
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_widget_WindowsUIUtils_h__
+#define mozilla_widget_WindowsUIUtils_h__
+
+#include "nsIWindowsUIUtils.h"
+#include "nsString.h"
+#include "nsColor.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/MozPromise.h"
+
+using SharePromise =
+    mozilla::MozPromise<bool, nsresult, /* IsExclusive */ true>;
+
+namespace mozilla {
+enum class ColorScheme : uint8_t;
+}
+
+class WindowsUIUtils final : public nsIWindowsUIUtils {
+ public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIWINDOWSUIUTILS
+
+  WindowsUIUtils();
+
+  static RefPtr<SharePromise> Share(nsAutoString aTitle, nsAutoString aText,
+                                    nsAutoString aUrl);
+
+  static void UpdateInTabletMode();
+  static bool GetInTabletMode();
+
+  // Gets the system accent color, or one of the darker / lighter variants
+  // (darker = -1/2/3, lighter=+1/2/3, values outside of that range are
+  // disallowed).
+  static mozilla::Maybe<nscolor> GetAccentColor(int aTone = 0);
+  static mozilla::Maybe<nscolor> GetSystemColor(mozilla::ColorScheme, int);
+
+  // Use LookAndFeel for a cached getter.
+  static bool ComputeOverlayScrollbars();
+  static double ComputeTextScaleFactor();
+
+ protected:
+  ~WindowsUIUtils();
+};
+
+#endif  // mozilla_widget_WindowsUIUtils_h__