gecko-dev/dom/midi/MIDIInput.cpp

/* -*- 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/. */

#include "mozilla/dom/MIDIInput.h"
#include "mozilla/dom/MIDIPortChild.h"
#include "mozilla/dom/MIDIInputBinding.h"
#include "mozilla/dom/MIDIMessageEvent.h"
#include "mozilla/dom/MIDIMessageEventBinding.h"
#include "nsDOMNavigationTiming.h"

namespace mozilla {
namespace dom {

MIDIInput::MIDIInput(nsPIDOMWindowInner* aWindow, MIDIAccess* aMIDIAccessParent)
    : MIDIPort(aWindow, aMIDIAccessParent) {}

// static
MIDIInput* MIDIInput::Create(nsPIDOMWindowInner* aWindow,
                             MIDIAccess* aMIDIAccessParent,
                             const MIDIPortInfo& aPortInfo,
                             const bool aSysexEnabled) {
  MOZ_ASSERT(static_cast<MIDIPortType>(aPortInfo.type()) ==
             MIDIPortType::Input);
  auto port = new MIDIInput(aWindow, aMIDIAccessParent);
  if (!port->Initialize(aPortInfo, aSysexEnabled)) {
    return nullptr;
  }
  return port;
}

JSObject* MIDIInput::WrapObject(JSContext* aCx,
                                JS::Handle<JSObject*> aGivenProto) {
  return MIDIInput_Binding::Wrap(aCx, this, aGivenProto);
}

void MIDIInput::Receive(const nsTArray<MIDIMessage>& aMsgs) {
  nsCOMPtr<Document> doc = GetOwner() ? GetOwner()->GetDoc() : nullptr;
  if (!doc) {
    NS_WARNING("No document available to send MIDIMessageEvent to!");
    return;
  }
  for (auto& msg : aMsgs) {
    RefPtr<MIDIMessageEvent> event(
        MIDIMessageEvent::Constructor(this, msg.timestamp(), msg.data()));
    DispatchTrustedEvent(event);
  }
}

EventHandlerNonNull* MIDIInput::GetOnmidimessage() {
  return GetEventHandler(nsGkAtoms::onmidimessage);
}

void MIDIInput::SetOnmidimessage(EventHandlerNonNull* aCallback) {
  SetEventHandler(nsGkAtoms::onmidimessage, aCallback);
  if (mPort->ConnectionState() != MIDIPortConnectionState::Open) {
    mPort->SendOpen();
  }
}

}  // namespace dom
}  // namespace mozilla