dom/midi/MIDIInput.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
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_MIDIInput_h
   8 #define mozilla_dom_MIDIInput_h
   9
  10 #include "mozilla/dom/MIDIPort.h"
  11
  12 struct JSContext;
  13
  14 namespace mozilla {
  15 namespace dom {
  16
  17 class MIDIPortInfo;
  18
  19 /**
  20  * Represents a MIDI Input Port, handles generating incoming message events.
  21  *
  22  */
  23 class MIDIInput final : public MIDIPort {
  24  public:
  25   static MIDIInput* Create(nsPIDOMWindowInner* aWindow,
  26                            MIDIAccess* aMIDIAccessParent,
  27                            const MIDIPortInfo& aPortInfo,
  28                            const bool aSysexEnabled);
  29   ~MIDIInput() = default;
  30
  31   JSObject* WrapObject(JSContext* aCx,
  32                        JS::Handle<JSObject*> aGivenProto) override;
  33
  34   // Since we need to be able to open the port on event handler assignment, we
  35   // can't use IMPL_EVENT_HANDLER. We have to implement the event handler
  36   // functions ourselves.
  37
  38   // Getter for the event handler callback
  39   EventHandlerNonNull* GetOnmidimessage();
  40   // Setter for the event handler callback
  41   void SetOnmidimessage(EventHandlerNonNull* aCallback);
  42
  43  private:
  44   MIDIInput(nsPIDOMWindowInner* aWindow, MIDIAccess* aMIDIAccessParent);
  45   // Takes an array of IPC MIDIMessage objects and turns them into
  46   // MIDIMessageEvents, which it then fires.
  47   void Receive(const nsTArray<MIDIMessage>& aMsgs) override;
  48 };
  49
  50 }  // namespace dom
  51 }  // namespace mozilla
  52
  53 #endif  // mozilla_dom_MIDIInput_h