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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /dom/midi/MIDIInput.cpp | |
parent | Initial commit. (diff) | |
download | firefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/midi/MIDIInput.cpp')
-rw-r--r-- | dom/midi/MIDIInput.cpp | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/dom/midi/MIDIInput.cpp b/dom/midi/MIDIInput.cpp new file mode 100644 index 0000000000..dbd46fa843 --- /dev/null +++ b/dom/midi/MIDIInput.cpp @@ -0,0 +1,102 @@ +/* -*- 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/Document.h" +#include "mozilla/dom/MIDIPortChild.h" +#include "mozilla/dom/MIDIInputBinding.h" +#include "mozilla/dom/MIDIMessageEvent.h" +#include "mozilla/dom/MIDIMessageEventBinding.h" +#include "nsDOMNavigationTiming.h" + +#include "MIDILog.h" + +namespace mozilla::dom { + +MIDIInput::MIDIInput(nsPIDOMWindowInner* aWindow, MIDIAccess* aMIDIAccessParent) + : MIDIPort(aWindow, aMIDIAccessParent), mKeepAlive(false) {} + +// 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) { + if (!GetOwner()) { + return; // Ignore messages once we've been disconnected from the owner + } + + nsCOMPtr<Document> doc = GetOwner()->GetDoc(); + if (!doc) { + NS_WARNING("No document available to send MIDIMessageEvent to!"); + return; + } + for (const auto& msg : aMsgs) { + RefPtr<MIDIMessageEvent> event( + MIDIMessageEvent::Constructor(this, msg.timestamp(), msg.data())); + DispatchTrustedEvent(event); + } +} + +void MIDIInput::StateChange() { + if (Port()->ConnectionState() == MIDIPortConnectionState::Open || + (Port()->DeviceState() == MIDIPortDeviceState::Connected && + Port()->ConnectionState() == MIDIPortConnectionState::Pending)) { + KeepAliveOnMidimessage(); + } else { + DontKeepAliveOnMidimessage(); + } +} + +void MIDIInput::EventListenerAdded(nsAtom* aType) { + if (aType == nsGkAtoms::onmidimessage) { + // HACK: the Web MIDI spec states that we should open a port only when + // setting the midimessage event handler but Chrome does it even when + // adding event listeners hence this. + if (Port()->ConnectionState() != MIDIPortConnectionState::Open) { + LOG("onmidimessage event listener added, sending implicit Open"); + Port()->SendOpen(); + } + } + + DOMEventTargetHelper::EventListenerAdded(aType); +} + +void MIDIInput::DisconnectFromOwner() { + DontKeepAliveOnMidimessage(); + + MIDIPort::DisconnectFromOwner(); +} + +void MIDIInput::KeepAliveOnMidimessage() { + if (!mKeepAlive) { + mKeepAlive = true; + KeepAliveIfHasListenersFor(nsGkAtoms::onmidimessage); + } +} + +void MIDIInput::DontKeepAliveOnMidimessage() { + if (mKeepAlive) { + IgnoreKeepAliveIfHasListenersFor(nsGkAtoms::onmidimessage); + mKeepAlive = false; + } +} + +} // namespace mozilla::dom |