chrome/browser/media/chrome_midi_permission_context.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_MEDIA_CHROME_MIDI_PERMISSION_CONTEXT_H_
   6 #define CHROME_BROWSER_MEDIA_CHROME_MIDI_PERMISSION_CONTEXT_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "components/browser_context_keyed_service/browser_context_keyed_service.h"
  10 #include "content/public/browser/browser_context.h"
  11
  12 class GURL;
  13 class PermissionQueueController;
  14 class PermissionRequestID;
  15 class Profile;
  16
  17 // This class manages MIDI permissions flow. Used on the UI thread.
  18 class ChromeMIDIPermissionContext : public BrowserContextKeyedService {
  19  public:
  20   explicit ChromeMIDIPermissionContext(Profile* profile);
  21   virtual ~ChromeMIDIPermissionContext();
  22
  23   // BrowserContextKeyedService methods:
  24   virtual void Shutdown() OVERRIDE;
  25
  26   // Request to ask users permission about MIDI.
  27   void RequestMIDISysExPermission(
  28       int render_process_id,
  29       int render_view_id,
  30       int bridge_id,
  31       const GURL& requesting_frame,
  32       const content::BrowserContext::MIDISysExPermissionCallback& callback);
  33
  34   // Cancel a pending MIDI permission request.
  35   void CancelMIDISysExPermissionRequest(int render_process_id,
  36                                         int render_view_id,
  37                                         int bridge_id,
  38                                         const GURL& requesting_frame);
  39
  40  private:
  41   // Decide whether the permission should be granted.
  42   // Calls PermissionDecided if permission can be decided non-interactively,
  43   // or NotifyPermissionSet if permission decided by presenting an infobar.
  44   void DecidePermission(
  45       const PermissionRequestID& id,
  46       const GURL& requesting_frame,
  47       const GURL& embedder,
  48       const content::BrowserContext::MIDISysExPermissionCallback& callback);
  49
  50   // Called when permission is granted without interactively asking the user.
  51   void PermissionDecided(
  52       const PermissionRequestID& id,
  53       const GURL& requesting_frame,
  54       const GURL& embedder,
  55       const content::BrowserContext::MIDISysExPermissionCallback& callback,
  56       bool allowed);
  57
  58   // Called when the permission decision is made. It may be by the
  59   // InfoBarDelegate to notify permission has been set.
  60   void NotifyPermissionSet(
  61       const PermissionRequestID& id,
  62       const GURL& requesting_frame,
  63       const content::BrowserContext::MIDISysExPermissionCallback& callback,
  64       bool allowed);
  65
  66   // Return an instance of the infobar queue controller, creating it if needed.
  67   PermissionQueueController* GetQueueController();
  68
  69   // Removes any pending InfoBar request.
  70   void CancelPendingInfobarRequest(const PermissionRequestID& id);
  71
  72   Profile* const profile_;
  73   bool shutting_down_;
  74   scoped_ptr<PermissionQueueController> permission_queue_controller_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(ChromeMIDIPermissionContext);
  77 };
  78
  79 #endif  // CHROME_BROWSER_MEDIA_CHROME_MIDI_PERMISSION_CONTEXT_H_