import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/presentation/PresentationDeviceManager.h

@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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_dom_PresentationDeviceManager_h__
+#define mozilla_dom_PresentationDeviceManager_h__
+
+#include "nsIObserver.h"
+#include "nsIPresentationDevice.h"
+#include "nsIPresentationDeviceManager.h"
+#include "nsIPresentationDeviceProvider.h"
+#include "nsCOMArray.h"
+#include "nsWeakReference.h"
+
+namespace mozilla {
+namespace dom {
+
+class PresentationDeviceManager final : public nsIPresentationDeviceManager
+                                      , public nsIPresentationDeviceListener
+                                      , public nsIObserver
+                                      , public nsSupportsWeakReference
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIPRESENTATIONDEVICEMANAGER
+  NS_DECL_NSIPRESENTATIONDEVICELISTENER
+  NS_DECL_NSIOBSERVER
+
+  PresentationDeviceManager();
+
+private:
+  virtual ~PresentationDeviceManager();
+
+  void Init();
+
+  void Shutdown();
+
+  void LoadDeviceProviders();
+
+  void UnloadDeviceProviders();
+
+  void NotifyDeviceChange(nsIPresentationDevice* aDevice,
+                          const char16_t* aType);
+
+  nsCOMArray<nsIPresentationDeviceProvider> mProviders;
+  nsCOMArray<nsIPresentationDevice> mDevices;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif /* mozilla_dom_PresentationDeviceManager_h__ */