chrome/browser/chromeos/display/output_protection_delegate.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_CHROMEOS_DISPLAY_OUTPUT_PROTECTION_DELEGATE_H_
   6 #define CHROME_BROWSER_CHROMEOS_DISPLAY_OUTPUT_PROTECTION_DELEGATE_H_
   7
   8 #include "base/memory/weak_ptr.h"
   9 #include "ui/aura/window.h"
  10 #include "ui/aura/window_observer.h"
  11 #include "ui/display/chromeos/display_configurator.h"
  12
  13 namespace chromeos {
  14
  15 // A class to query output protection status and/or enable output protection.
  16 // All methods except constructor should be invoked in UI thread.
  17 class OutputProtectionDelegate : public aura::WindowObserver {
  18  public:
  19   typedef base::Callback<void(bool /* success */,
  20                               uint32_t /* link_mask */,
  21                               uint32_t /* protection_mask*/)>
  22       QueryStatusCallback;
  23   typedef base::Callback<void(bool /* success */)> EnableProtectionCallback;
  24
  25   OutputProtectionDelegate(int render_process_id, int render_frame_id);
  26   ~OutputProtectionDelegate() override;
  27
  28   // aura::WindowObserver overrides.
  29   void OnWindowHierarchyChanged(
  30       const aura::WindowObserver::HierarchyChangeParams& params) override;
  31   void OnWindowDestroying(aura::Window* window) override;
  32
  33   void QueryStatus(const QueryStatusCallback& callback);
  34   void EnableProtection(uint32_t desired_method_mask,
  35                         const EnableProtectionCallback& callback);
  36
  37  private:
  38   ui::DisplayConfigurator::ContentProtectionClientId GetClientId();
  39
  40   void QueryStatusComplete(
  41       const QueryStatusCallback& callback,
  42       const ui::DisplayConfigurator::QueryProtectionResponse& response);
  43   void EnableProtectionComplete(const EnableProtectionCallback& callback,
  44                                 bool success);
  45
  46   // Used to lookup the WebContents associated with the render frame.
  47   int render_process_id_;
  48   int render_frame_id_;
  49
  50   // Native window being observed.
  51   aura::Window* window_;
  52
  53   ui::DisplayConfigurator::ContentProtectionClientId client_id_;
  54
  55   // The display id which the renderer currently uses.
  56   int64 display_id_;
  57
  58   // The last desired method mask. Will enable this mask on new display if
  59   // renderer changes display.
  60   uint32_t desired_method_mask_;
  61
  62   base::WeakPtrFactory<OutputProtectionDelegate> weak_ptr_factory_;
  63 };
  64
  65 }  // namespace chromeos
  66
  67 #endif  // CHROME_BROWSER_CHROMEOS_DISPLAY_OUTPUT_PROTECTION_DELEGATE_H_