Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 97 insertions, 0 deletions

diff --git a/dom/midi/MIDIPort.h b/dom/midi/MIDIPort.h
new file mode 100644
index 0000000000..1d12030a71
--- /dev/null
+++ b/dom/midi/MIDIPort.h
@@ -0,0 +1,97 @@
+/* -*- 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_MIDIPort_h
+#define mozilla_dom_MIDIPort_h
+
+#include "nsWrapperCache.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/Observer.h"
+#include "mozilla/DOMEventTargetHelper.h"
+#include "mozilla/dom/MIDIAccess.h"
+#include "mozilla/dom/MIDIPortInterface.h"
+
+struct JSContext;
+
+namespace mozilla {
+namespace dom {
+
+class Promise;
+class MIDIPortInfo;
+class MIDIAccess;
+class MIDIPortChangeEvent;
+class MIDIPortChild;
+class MIDIMessage;
+
+/**
+ * Implementation of WebIDL DOM MIDIPort class. Handles all port representation
+ * and communication.
+ *
+ */
+class MIDIPort : public DOMEventTargetHelper,
+                 public MIDIAccessDestructionObserver {
+ public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(MIDIPort,
+                                                         DOMEventTargetHelper)
+ protected:
+  MIDIPort(nsPIDOMWindowInner* aWindow, MIDIAccess* aMIDIAccessParent);
+  bool Initialize(const MIDIPortInfo& aPortInfo, bool aSysexEnabled);
+  virtual ~MIDIPort();
+
+ public:
+  nsPIDOMWindowInner* GetParentObject() const { return GetOwner(); }
+
+  // Getters
+  void GetId(nsString& aRetVal) const;
+  void GetManufacturer(nsString& aRetVal) const;
+  void GetName(nsString& aRetVal) const;
+  void GetVersion(nsString& aRetVal) const;
+  MIDIPortType Type() const;
+  MIDIPortConnectionState Connection() const;
+  MIDIPortDeviceState State() const;
+  bool SysexEnabled() const;
+
+  already_AddRefed<Promise> Open();
+  already_AddRefed<Promise> Close();
+
+  // MIDIPorts observe the death of their parent MIDIAccess object, and delete
+  // their reference accordingly.
+  virtual void Notify(const void_t& aVoid) override;
+
+  void FireStateChangeEvent();
+
+  virtual void Receive(const nsTArray<MIDIMessage>& aMsg);
+
+  // This object holds a pointer to its corresponding IPC MIDIPortChild actor.
+  // If the IPC actor is deleted, it cleans itself up via this method.
+  void UnsetIPCPort();
+
+  IMPL_EVENT_HANDLER(statechange)
+ protected:
+  // IPC Actor corresponding to this class
+  RefPtr<MIDIPortChild> mPort;
+
+ private:
+  // MIDIAccess object that created this MIDIPort object, which we need for
+  // firing port connection events. There is a chance this MIDIPort object can
+  // outlive its parent MIDIAccess object, so this is a weak reference that must
+  // be handled properly. It is set on construction of the MIDIPort object, and
+  // set to null when the parent MIDIAccess object is destroyed, which fires an
+  // notification we observe.
+  MIDIAccess* mMIDIAccessParent;
+  // Promise object generated on Open() call, that needs to be resolved once the
+  // platform specific Open() function has completed.
+  RefPtr<Promise> mOpeningPromise;
+  // Promise object generated on Close() call, that needs to be resolved once
+  // the platform specific Close() function has completed.
+  RefPtr<Promise> mClosingPromise;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_MIDIPort_h