widget/ScreenManager.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_widget_ScreenManager_h
   8 #define mozilla_widget_ScreenManager_h
   9
  10 #include "nsIScreenManager.h"
  11
  12 #include "mozilla/RefPtr.h"
  13 #include "mozilla/UniquePtr.h"
  14 #include "mozilla/widget/Screen.h"
  15 #include "nsTArray.h"
  16
  17 namespace mozilla {
  18 namespace dom {
  19 class ContentParent;
  20 class ScreenDetails;
  21 }  // namespace dom
  22 }  // namespace mozilla
  23
  24 namespace mozilla {
  25 namespace widget {
  26
  27 class ScreenManager final : public nsIScreenManager {
  28  public:
  29   class Helper {
  30    public:
  31     virtual ~Helper() = default;
  32   };
  33
  34  public:
  35   NS_DECL_ISUPPORTS
  36   NS_DECL_NSISCREENMANAGER
  37
  38   static ScreenManager& GetSingleton();
  39   static already_AddRefed<ScreenManager> GetAddRefedSingleton();
  40
  41   void SetHelper(UniquePtr<Helper> aHelper);
  42   static void Refresh(nsTArray<RefPtr<Screen>>&& aScreens);
  43   void Refresh(nsTArray<mozilla::dom::ScreenDetails>&& aScreens);
  44   void CopyScreensToRemote(mozilla::dom::ContentParent* aContentParent);
  45   already_AddRefed<Screen> GetPrimaryScreen();
  46
  47   const nsTArray<RefPtr<Screen>>& CurrentScreenList() const {
  48     return mScreenList;
  49   }
  50
  51  private:
  52   ScreenManager();
  53   virtual ~ScreenManager();
  54
  55   void RefreshInternal(nsTArray<RefPtr<Screen>>&& aScreens);
  56   template <class Range>
  57   void CopyScreensToRemoteRange(Range aRemoteRange);
  58   void CopyScreensToAllRemotesIfIsParent();
  59
  60   AutoTArray<RefPtr<Screen>, 4> mScreenList;
  61   UniquePtr<Helper> mHelper;
  62 };
  63
  64 }  // namespace widget
  65 }  // namespace mozilla
  66
  67 #endif  // mozilla_widget_ScreenManager_h