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   ~MidiDispatcherHost() override;
  23
  24   // WebContentsObserver implementation.
  25   void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
  26   void DidNavigateAnyFrame(RenderFrameHost* render_frame_host,
  27                            const LoadCommittedDetails& details,
  28                            const FrameNavigateParams& params) override;
  29   bool OnMessageReceived(const IPC::Message& message,
  30                          RenderFrameHost* render_frame_host) override;
  31
  32  private:
  33   void OnRequestSysExPermission(RenderFrameHost* render_frame_host,
  34                                 int bridge_id,
  35                                 const GURL& origin,
  36                                 bool user_gesture);
  37   void OnCancelSysExPermissionRequest(RenderFrameHost* render_frame_host,
  38                                       int bridge_id,
  39                                       const GURL& requesting_frame);
  40   void WasSysExPermissionGranted(int render_process_id,
  41                                  int render_frame_id,
  42                                  int bridge_id,
  43                                  bool is_allowed);
  44   void CancelPermissionRequestsForFrame(RenderFrameHost* render_frame_host);
  45
  46   struct PendingPermission {
  47     PendingPermission(int render_process_id,
  48                       int render_frame_id,
  49                       int bridge_id);
  50     ~PendingPermission();
  51     int render_process_id;
  52     int render_frame_id;
  53     int bridge_id;
  54   };
  55   std::vector<PendingPermission> pending_permissions_;
  56
  57   base::WeakPtrFactory<MidiDispatcherHost> weak_factory_;
  58
  59   DISALLOW_COPY_AND_ASSIGN(MidiDispatcherHost);
  60 };
  61
  62 }  // namespace content
  63
  64 #endif  // CONTENT_BROWSER_MEDIA_MIDI_DISPATCHER_HOST_H_