1 files changed, 47 insertions, 0 deletions
diff --git a/widget/cocoa/MediaHardwareKeysEventSourceMac.h b/widget/cocoa/MediaHardwareKeysEventSourceMac.h
new file mode 100644
index 0000000000..da08b8108d
--- /dev/null
+++ b/widget/cocoa/MediaHardwareKeysEventSourceMac.h
@@ -0,0 +1,47 @@
+/* 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 WIDGET_COCOA_MEDIAHARDWAREKEYSEVENTSOURCEMAC_H_
+#define WIDGET_COCOA_MEDIAHARDWAREKEYSEVENTSOURCEMAC_H_
+
+#import <ApplicationServices/ApplicationServices.h>
+#import <CoreFoundation/CoreFoundation.h>
+
+#include "mozilla/dom/MediaControlKeySource.h"
+#include "nsISupportsImpl.h"
+
+namespace mozilla {
+namespace widget {
+
+class MediaHardwareKeysEventSourceMac final
+    : public mozilla::dom::MediaControlKeySource {
+ public:
+  NS_INLINE_DECL_REFCOUNTING(MediaHardwareKeysEventSourceMac, override)
+  MediaHardwareKeysEventSourceMac() = default;
+
+  static CGEventRef EventTapCallback(CGEventTapProxy proxy, CGEventType type,
+                                     CGEventRef event, void* refcon);
+
+  bool Open() override;
+  void Close() override;
+  bool IsOpened() const override;
+
+  // Currently we don't support showing supported keys on the touch bar.
+  void SetSupportedMediaKeys(const MediaKeysArray& aSupportedKeys) override {}
+
+ private:
+  ~MediaHardwareKeysEventSourceMac() = default;
+
+  bool StartEventTap();
+  void StopEventTap();
+
+  // They are used to intercept mac hardware media keys.
+  CFMachPortRef mEventTap = nullptr;
+  CFRunLoopSourceRef mEventTapSource = nullptr;
+};
+
+}  // namespace widget
+}  // namespace mozilla
+
+#endif