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_MIDI_PERMISSION_CONTEXT_H_ 6 #define CHROME_BROWSER_MEDIA_MIDI_PERMISSION_CONTEXT_H_ 7 8 #include "base/containers/scoped_ptr_hash_map.h" 9 #include "base/memory/scoped_ptr.h" 10 #include "base/memory/weak_ptr.h" 11 #include "components/keyed_service/core/keyed_service.h" 12 13 namespace content { 14 class WebContents; 15 } 16 17 class GURL; 18 class MidiPermissionRequest; 19 class PermissionQueueController; 20 class PermissionRequestID; 21 class Profile; 22 23 // This class manages MIDI permissions flow. Used on the UI thread. 24 class MidiPermissionContext : public KeyedService { 25 public: 26 explicit MidiPermissionContext(Profile* profile); 27 virtual ~MidiPermissionContext(); 28 29 // KeyedService methods: 30 virtual void Shutdown() OVERRIDE; 31 32 // Request to ask users permission about MIDI. 33 void RequestMidiSysExPermission( 34 content::WebContents* web_contents, 35 int bridge_id, 36 const GURL& requesting_frame, 37 bool user_gesture, 38 const base::Callback<void(bool)>& result_callback, 39 base::Closure* cancel_callback); 40 41 // Called when the permission decision is made. If a permissions prompt is 42 // shown to the user it will be called when the user selects an option 43 // from that prompt. 44 void NotifyPermissionSet( 45 const PermissionRequestID& id, 46 const GURL& requesting_frame, 47 const base::Callback<void(bool)>& callback, 48 bool allowed); 49 50 private: 51 friend class MidiPermissionRequest; 52 53 // Cancel a pending MIDI permission request. 54 void CancelMidiSysExPermissionRequest(int render_process_id, 55 int render_view_id, 56 int bridge_id); 57 58 // Decide whether the permission should be granted. 59 // Calls PermissionDecided if permission can be decided non-interactively, 60 // or NotifyPermissionSet if permission decided by presenting an infobar. 61 void DecidePermission( 62 content::WebContents* web_contents, 63 const PermissionRequestID& id, 64 const GURL& requesting_frame, 65 const GURL& embedder, 66 bool user_gesture, 67 const base::Callback<void(bool)>& callback); 68 69 // Called when permission is granted without interactively asking the user. 70 void PermissionDecided( 71 const PermissionRequestID& id, 72 const GURL& requesting_frame, 73 const GURL& embedder, 74 const base::Callback<void(bool)>& callback, 75 bool allowed); 76 77 // Return an instance of the infobar queue controller, creating it if needed. 78 PermissionQueueController* GetQueueController(); 79 80 // Removes any pending InfoBar request. 81 void CancelPendingInfobarRequest(const PermissionRequestID& id); 82 83 // Notify the context that a particular request object is no longer needed. 84 void RequestFinished(MidiPermissionRequest* request); 85 86 Profile* const profile_; 87 bool shutting_down_; 88 scoped_ptr<PermissionQueueController> permission_queue_controller_; 89 90 base::ScopedPtrHashMap<std::string, MidiPermissionRequest> pending_requests_; 91 92 base::WeakPtrFactory<MidiPermissionContext> weak_factory_; 93 94 DISALLOW_COPY_AND_ASSIGN(MidiPermissionContext); 95 }; 96 97 #endif // CHROME_BROWSER_MEDIA_MIDI_PERMISSION_CONTEXT_H_ 98