Add m-esr52 at 52.6.0

1 files changed, 42 insertions, 0 deletions

diff --git a/widget/cocoa/nsCocoaFeatures.h b/widget/cocoa/nsCocoaFeatures.h
new file mode 100644
index 000000000..597aff611
--- /dev/null
+++ b/widget/cocoa/nsCocoaFeatures.h
@@ -0,0 +1,42 @@
+/* -*- Mode: C++; tab-width: 20; 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 nsCocoaFeatures_h_
+#define nsCocoaFeatures_h_
+
+#include <stdint.h>
+
+/// Note that this class assumes we support the platform we are running on.
+/// For better or worse, if the version is unknown or less than what we
+/// support, we set it to the minimum supported version.  GetSystemVersion
+/// is the only call that returns the unadjusted values.
+class nsCocoaFeatures {
+public:
+  static int32_t OSXVersion();
+  static int32_t OSXVersionMajor();
+  static int32_t OSXVersionMinor();
+  static int32_t OSXVersionBugFix();
+  static bool OnYosemiteOrLater();
+  static bool OnElCapitanOrLater();
+  static bool OnSierraOrLater();
+
+  static bool IsAtLeastVersion(int32_t aMajor, int32_t aMinor, int32_t aBugFix=0);
+
+  // These are utilities that do not change or depend on the value of mOSXVersion
+  // and instead just encapsulate the encoding algorithm.  Note that GetVersion
+  // actually adjusts to the lowest supported OS, so it will always return
+  // a "supported" version.  GetSystemVersion does not make any modifications.
+  static void GetSystemVersion(int &aMajor, int &aMinor, int &aBugFix);
+  static int32_t GetVersion(int32_t aMajor, int32_t aMinor, int32_t aBugFix);
+  static int32_t ExtractMajorVersion(int32_t aVersion);
+  static int32_t ExtractMinorVersion(int32_t aVersion);
+  static int32_t ExtractBugFixVersion(int32_t aVersion);
+
+private:
+  static void InitializeVersionNumbers();
+
+  static int32_t mOSXVersion;
+};
+#endif // nsCocoaFeatures_h_