1 files changed, 50 insertions, 0 deletions
diff --git a/dom/midi/MIDIPortChild.h b/dom/midi/MIDIPortChild.h
new file mode 100644
index 0000000000..2ef1059c78
--- /dev/null
+++ b/dom/midi/MIDIPortChild.h
@@ -0,0 +1,50 @@
+/* -*- 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_MIDIPortChild_h
+#define mozilla_dom_MIDIPortChild_h
+
+#include "mozilla/dom/MIDIPortInterface.h"
+#include "mozilla/dom/PMIDIPortChild.h"
+
+namespace mozilla::dom {
+
+class MIDIPort;
+class MIDIPortInfo;
+
+/**
+ * Child actor for a MIDIPort object. Each MIDIPort DOM object in JS has a its
+ * own child actor. The lifetime of the actor object is dependent on the
+ * lifetime of the JS object.
+ *
+ */
+class MIDIPortChild final : public PMIDIPortChild, public MIDIPortInterface {
+ public:
+  NS_INLINE_DECL_REFCOUNTING(MIDIPortChild, override);
+  mozilla::ipc::IPCResult RecvReceive(nsTArray<MIDIMessage>&& aMsgs);
+
+  virtual void ActorDestroy(ActorDestroyReason aWhy) override;
+
+  mozilla::ipc::IPCResult RecvUpdateStatus(const uint32_t& aDeviceState,
+                                           const uint32_t& aConnectionState);
+
+  MIDIPortChild(const MIDIPortInfo& aPortInfo, bool aSysexEnabled,
+                MIDIPort* aPort);
+  nsresult GenerateStableId(const nsACString& aOrigin);
+  const nsString& StableId() { return mStableId; };
+
+  void DetachOwner() { mDOMPort = nullptr; }
+
+ private:
+  ~MIDIPortChild() = default;
+  // Pointer to the DOM object this actor represents. The actor cannot outlive
+  // the DOM object.
+  MIDIPort* mDOMPort;
+  nsString mStableId;
+};
+}  // namespace mozilla::dom
+
+#endif