dom/performance/PerformanceObserver.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_PerformanceObserver_h__
   8 #define mozilla_dom_PerformanceObserver_h__
   9
  10 #include "nsCOMPtr.h"
  11 #include "nsISupports.h"
  12 #include "mozilla/dom/PerformanceObserverBinding.h"
  13 #include "mozilla/RefPtr.h"
  14 #include "nsString.h"
  15 #include "nsTArray.h"
  16 #include "nsWrapperCache.h"
  17
  18 class nsPIDOMWindowInner;
  19
  20 namespace mozilla {
  21
  22 class ErrorResult;
  23
  24 namespace dom {
  25
  26 class GlobalObject;
  27 class Performance;
  28 class PerformanceEntry;
  29 class PerformanceObserverCallback;
  30 class WorkerPrivate;
  31
  32 class PerformanceObserver final : public nsISupports, public nsWrapperCache {
  33  public:
  34   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  35   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(PerformanceObserver)
  36
  37   static already_AddRefed<PerformanceObserver> Constructor(
  38       const GlobalObject& aGlobal, PerformanceObserverCallback& aCb,
  39       ErrorResult& aRv);
  40
  41   PerformanceObserver(nsPIDOMWindowInner* aOwner,
  42                       PerformanceObserverCallback& aCb);
  43
  44   PerformanceObserver(WorkerPrivate* aWorkerPrivate,
  45                       PerformanceObserverCallback& aCb);
  46
  47   virtual JSObject* WrapObject(JSContext* aCx,
  48                                JS::Handle<JSObject*> aGivenProto) override;
  49
  50   nsISupports* GetParentObject() const { return mOwner; }
  51
  52   void Observe(const PerformanceObserverInit& aOptions, ErrorResult& aRv);
  53   static void GetSupportedEntryTypes(const GlobalObject& aGlobal,
  54                                      JS::MutableHandle<JSObject*> aObject);
  55
  56   void Disconnect();
  57
  58   void TakeRecords(nsTArray<RefPtr<PerformanceEntry>>& aRetval);
  59
  60   MOZ_CAN_RUN_SCRIPT void Notify();
  61   void QueueEntry(PerformanceEntry* aEntry);
  62
  63   bool ObservesTypeOfEntry(PerformanceEntry* aEntry);
  64
  65  private:
  66   void ReportUnsupportedTypesErrorToConsole(bool aIsMainThread,
  67                                             const char* msgId,
  68                                             const nsString& aInvalidTypes);
  69   ~PerformanceObserver();
  70
  71   nsCOMPtr<nsISupports> mOwner;
  72   RefPtr<PerformanceObserverCallback> mCallback;
  73   RefPtr<Performance> mPerformance;
  74   nsTArray<nsString> mEntryTypes;
  75   nsTArray<PerformanceObserverInit> mOptions;
  76   enum {
  77     ObserverTypeUndefined,
  78     ObserverTypeSingle,
  79     ObserverTypeMultiple,
  80   } mObserverType;
  81   /*
  82    * This is also known as registered, in the spec.
  83    */
  84   bool mConnected;
  85   nsTArray<RefPtr<PerformanceEntry>> mQueuedEntries;
  86 };
  87
  88 }  // namespace dom
  89 }  // namespace mozilla
  90
  91 #endif