dom/midi/MIDIPort.h
author L10n Bumper Bot <release+l10nbumper@mozilla.com>
Thu, 08 Nov 2018 03:00:11 -0800
changeset 501100 1cd4f2d571554c4dc89cf1be1d98683c0d14f797
parent 460149 63de8ef246cc1d306ae4825ba3eda458def0572f
child 508163 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
no bug - Bumping Fennec l10n changesets r=release a=l10n-bump DONTBUILD an -> 336e061995b9 ar -> f6834a7d7374 as -> d2c76e616a66 ast -> fcb8f3455237 az -> c4caf3b07cf2 be -> 697eb1022498 bg -> 7bf1f448f743 bn-BD -> 5f7a87adee06 bn-IN -> 49ce3195c4c2 br -> 41cf35b7c5b5 bs -> 4a14aee27904 ca -> 9373e8ce86d4 cak -> a40d767541ba cs -> 4b99defb0525 cy -> 4c948fed2584 de -> 017a7e7a267a dsb -> aadebeccf5ba el -> 2d28a78dcef5 en-CA -> 55ad9171a9f0 en-GB -> 296422b495e9 en-ZA -> c1b5d2128914 eo -> c68e87667d9f es-AR -> bff0a788c711 es-CL -> 1d3efd2532ea es-ES -> 4d1feb70b0e2 es-MX -> fceda607d0f4 et -> 58a8262a0cc7 eu -> 7cebfd46208b fa -> cbc040d58476 ff -> 46f5aec275ea fi -> 235ab13d261e fr -> 8ee417b64f99

/* -*- 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/ErrorResult.h"
#include "mozilla/dom/MIDIAccess.h"
#include "mozilla/dom/MIDIPortBinding.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();
  }

  virtual JSObject* WrapObject(JSContext* aCx,
                               JS::Handle<JSObject*> aGivenProto) override;

  // 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