content/browser/renderer_host/media/midi_dispatcher_host.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 CONTENT_BROWSER_RENDERER_HOST_MEDIA_MIDI_DISPATCHER_HOST_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_MIDI_DISPATCHER_HOST_H_
   7
   8 #include "content/public/browser/browser_message_filter.h"
   9
  10 class GURL;
  11
  12 namespace content {
  13
  14 class BrowserContext;
  15
  16 // MIDIDispatcherHost handles permissions for using system exclusive messages.
  17 // It works as BrowserMessageFilter to handle IPC messages between
  18 // MIDIDispatcher running as a RenderViewObserver.
  19 class MIDIDispatcherHost : public BrowserMessageFilter {
  20  public:
  21   MIDIDispatcherHost(int render_process_id, BrowserContext* browser_context);
  22
  23   // BrowserMessageFilter implementation.
  24   virtual bool OnMessageReceived(const IPC::Message& message,
  25                                  bool* message_was_ok) OVERRIDE;
  26   virtual void OverrideThreadForMessage(
  27       const IPC::Message& message, BrowserThread::ID* thread) OVERRIDE;
  28
  29  protected:
  30   virtual ~MIDIDispatcherHost();
  31
  32  private:
  33   void OnRequestSysExPermission(int render_view_id,
  34                                 int bridge_id,
  35                                 const GURL& origin);
  36   void OnCancelSysExPermissionRequest(int render_view_id,
  37                                       int bridge_id,
  38                                       const GURL& requesting_frame);
  39   void WasSysExPermissionGranted(int render_view_id,
  40                                  int bridge_id,
  41                                  bool success);
  42
  43   int render_process_id_;
  44   BrowserContext* browser_context_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(MIDIDispatcherHost);
  47 };
  48
  49 }  // namespace content
  50
  51 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MIDI_DISPATCHER_HOST_H_