dom/midi/MIDIPermissionRequest.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_MIDIPermissionRequest_h
   8 #define mozilla_dom_MIDIPermissionRequest_h
   9
  10 #include "mozilla/dom/Promise.h"
  11 #include "nsContentPermissionHelper.h"
  12
  13 namespace mozilla::dom {
  14
  15 struct MIDIOptions;
  16
  17 /**
  18  * Handles permission dialog management when requesting MIDI permissions.
  19  */
  20 class MIDIPermissionRequest final : public ContentPermissionRequestBase,
  21                                     public nsIRunnable {
  22  public:
  23   MIDIPermissionRequest(nsPIDOMWindowInner* aWindow, Promise* aPromise,
  24                         const MIDIOptions& aOptions);
  25
  26   NS_DECL_ISUPPORTS_INHERITED
  27   NS_DECL_NSIRUNNABLE
  28   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(MIDIPermissionRequest,
  29                                            ContentPermissionRequestBase)
  30   // nsIContentPermissionRequest
  31   NS_IMETHOD Cancel(void) override;
  32   NS_IMETHOD Allow(JS::Handle<JS::Value> choices) override;
  33   NS_IMETHOD GetTypes(nsIArray** aTypes) override;
  34
  35  private:
  36   ~MIDIPermissionRequest() = default;
  37   nsresult DoPrompt();
  38   void CancelWithRandomizedDelay();
  39
  40   // If we're canceling on a timer, we need to hold a strong ref while it's
  41   // outstanding.
  42   nsCOMPtr<nsITimer> mCancelTimer;
  43
  44   // Promise for returning MIDIAccess on request success
  45   RefPtr<Promise> mPromise;
  46   // True if sysex permissions should be requested
  47   bool mNeedsSysex;
  48 };
  49
  50 }  // namespace mozilla::dom
  51
  52 #endif  // mozilla_dom_MIDIPermissionRequest_h