MIDIPermissionRequest.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim:set ts=2 sw=2 sts=2 et cindent: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this file,

 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_MIDIPermissionRequest_h

#define mozilla_dom_MIDIPermissionRequest_h

#include "mozilla/dom/Promise.h"

#include "nsContentPermissionHelper.h"

namespace mozilla::dom {

struct MIDIOptions;

/**

 * Handles permission dialog management when requesting MIDI permissions.

*/

class MIDIPermissionRequest final : public ContentPermissionRequestBase,

                                    public nsIRunnable {

 public:

  MIDIPermissionRequest(nsPIDOMWindowInner* aWindow, Promise* aPromise,

                        const MIDIOptions& aOptions);

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_NSIRUNNABLE

  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(MIDIPermissionRequest,

                                           ContentPermissionRequestBase)

  // nsIContentPermissionRequest

  NS_IMETHOD Cancel(void) override;

  NS_IMETHOD Allow(JS::Handle<JS::Value> choices) override;

  NS_IMETHOD GetTypes(nsIArray** aTypes) override;

 private:

  ~MIDIPermissionRequest() = default;

  nsresult DoPrompt();

  void CancelWithRandomizedDelay();

  // If we're canceling on a timer, we need to hold a strong ref while it's

  // outstanding.

  nsCOMPtr<nsITimer> mCancelTimer;

  // Promise for returning MIDIAccess on request success

  RefPtr<Promise> mPromise;

  // True if sysex permissions should be requested

  bool mNeedsSysex;

};

}  // namespace mozilla::dom

#endif  // mozilla_dom_MIDIPermissionRequest_h