Home | History | Annotate | Download | only in media 
      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       const GURL& requesting_frame,
     31       const content::BrowserContext::MIDISysExPermissionCallback& callback);
     32 
     33  private:
     34   // Decide whether the permission should be granted.
     35   // Calls PermissionDecided if permission can be decided non-interactively,
     36   // or NotifyPermissionSet if permission decided by presenting an infobar.
     37   void DecidePermission(
     38       const PermissionRequestID& id,
     39       const GURL& requesting_frame,
     40       const GURL& embedder,
     41       const content::BrowserContext::MIDISysExPermissionCallback& callback);
     42 
     43   // Called when permission is granted without interactively asking the user.
     44   void PermissionDecided(
     45       const PermissionRequestID& id,
     46       const GURL& requesting_frame,
     47       const GURL& embedder,
     48       const content::BrowserContext::MIDISysExPermissionCallback& callback,
     49       bool allowed);
     50 
     51   // Called when the permission decision is made. It may be by the
     52   // InfoBarDelegate to notify permission has been set.
     53   void NotifyPermissionSet(
     54       const PermissionRequestID& id,
     55       const GURL& requesting_frame,
     56       const content::BrowserContext::MIDISysExPermissionCallback& callback,
     57       bool allowed);
     58 
     59   // Return an instance of the infobar queue controller, creating it if needed.
     60   PermissionQueueController* GetQueueController();
     61 
     62   Profile* const profile_;
     63   bool shutting_down_;
     64   scoped_ptr<PermissionQueueController> permission_queue_controller_;
     65 
     66   DISALLOW_COPY_AND_ASSIGN(ChromeMIDIPermissionContext);
     67 };
     68 
     69 #endif  // CHROME_BROWSER_MEDIA_CHROME_MIDI_PERMISSION_CONTEXT_H_
     70