content/browser/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_MEDIA_MIDI_DISPATCHER_HOST_H_
   6 #define CONTENT_BROWSER_MEDIA_MIDI_DISPATCHER_HOST_H_
   7
   8 #include <vector>
   9
  10 #include "base/callback_forward.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "content/public/browser/web_contents_observer.h"
  13
  14 namespace content {
  15
  16 class BrowserContext;
  17
  18 // MidiDispatcherHost handles permissions for using system exclusive messages.
  19 class MidiDispatcherHost : public WebContentsObserver {
  20  public:
  21   explicit MidiDispatcherHost(WebContents* web_contents);
  22   virtual ~MidiDispatcherHost();
  23
  24   // WebContentsObserver implementation.
  25   virtual bool OnMessageReceived(const IPC::Message& message,
  26                                  RenderFrameHost* render_frame_host) OVERRIDE;
  27
  28  private:
  29   void OnRequestSysExPermission(RenderFrameHost* render_frame_host,
  30                                 int bridge_id,
  31                                 const GURL& origin,
  32                                 bool user_gesture);
  33   void OnCancelSysExPermissionRequest(RenderFrameHost* render_frame_host,
  34                                       int bridge_id,
  35                                       const GURL& requesting_frame);
  36   void WasSysExPermissionGranted(int render_process_id,
  37                                  int render_frame_id,
  38                                  int bridge_id,
  39                                  bool is_allowed);
  40
  41   struct PendingPermission {
  42     PendingPermission(int render_process_id,
  43                       int render_frame_id,
  44                       int bridge_id);
  45     ~PendingPermission();
  46     int render_process_id;
  47     int render_frame_id;
  48     int bridge_id;
  49     base::Closure cancel;
  50   };
  51   std::vector<PendingPermission> pending_permissions_;
  52
  53   base::WeakPtrFactory<MidiDispatcherHost> weak_factory_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(MidiDispatcherHost);
  56 };
  57
  58 }  // namespace content
  59
  60 #endif  // CONTENT_BROWSER_MEDIA_MIDI_DISPATCHER_HOST_H_