PerformanceObserver.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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_PerformanceObserver_h__

#define mozilla_dom_PerformanceObserver_h__

#include "nsCOMPtr.h"

#include "nsISupports.h"

#include "mozilla/dom/PerformanceObserverBinding.h"

#include "mozilla/RefPtr.h"

#include "nsString.h"

#include "nsTArray.h"

#include "nsWrapperCache.h"

class nsPIDOMWindowInner;

namespace mozilla {

class ErrorResult;

namespace dom {

class GlobalObject;

class Performance;

class PerformanceEntry;

class PerformanceObserverCallback;

class WorkerPrivate;

class PerformanceObserver final : public nsISupports, public nsWrapperCache {

 public:

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(PerformanceObserver)

  static already_AddRefed<PerformanceObserver> Constructor(

      const GlobalObject& aGlobal, PerformanceObserverCallback& aCb,

      ErrorResult& aRv);

  PerformanceObserver(nsPIDOMWindowInner* aOwner,

                      PerformanceObserverCallback& aCb);

  PerformanceObserver(WorkerPrivate* aWorkerPrivate,

                      PerformanceObserverCallback& aCb);

  virtual JSObject* WrapObject(JSContext* aCx,

                               JS::Handle<JSObject*> aGivenProto) override;

  nsISupports* GetParentObject() const { return mOwner; }

  void Observe(const PerformanceObserverInit& aOptions, ErrorResult& aRv);

  static void GetSupportedEntryTypes(const GlobalObject& aGlobal,

                                     JS::MutableHandle<JSObject*> aObject);

  void Disconnect();

  void TakeRecords(nsTArray<RefPtr<PerformanceEntry>>& aRetval);

  MOZ_CAN_RUN_SCRIPT void Notify();

  void QueueEntry(PerformanceEntry* aEntry);

  bool ObservesTypeOfEntry(PerformanceEntry* aEntry);

 private:

  ~PerformanceObserver();

  nsCOMPtr<nsIGlobalObject> mOwner;

  RefPtr<PerformanceObserverCallback> mCallback;

  RefPtr<Performance> mPerformance;

  nsTArray<nsString> mEntryTypes;

  nsTArray<PerformanceObserverInit> mOptions;

  enum {

    ObserverTypeUndefined,

    ObserverTypeSingle,

    ObserverTypeMultiple,

  } mObserverType;

/*

   * This is also known as registered, in the spec.

*/

  bool mConnected;

  nsTArray<RefPtr<PerformanceEntry>> mQueuedEntries;

};

}  // namespace dom

}  // namespace mozilla

#endif