dom/worklet/WorkletGlobalScope.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
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_WorkletGlobalScope_h
   8 #define mozilla_dom_WorkletGlobalScope_h
   9
  10 #include "mozilla/Attributes.h"
  11 #include "mozilla/Maybe.h"
  12 #include "mozilla/TimeStamp.h"
  13 #include "mozilla/dom/BindingDeclarations.h"
  14 #include "nsDOMNavigationTiming.h"
  15 #include "nsIGlobalObject.h"
  16 #include "nsWrapperCache.h"
  17
  18 #define WORKLET_IID                                  \
  19   {                                                  \
  20     0x1b3f62e7, 0xe357, 0x44be, {                    \
  21       0xbf, 0xe0, 0xdf, 0x85, 0xe6, 0x56, 0x85, 0xac \
  22     }                                                \
  23   }
  24
  25 namespace JS {
  26 class RealmOptions;
  27 }
  28
  29 namespace JS::loader {
  30 class ModuleLoaderBase;
  31 }
  32
  33 namespace mozilla {
  34
  35 class ErrorResult;
  36 class WorkletImpl;
  37
  38 namespace dom {
  39
  40 namespace loader {
  41 class WorkletModuleLoader;
  42 }
  43
  44 class Console;
  45
  46 class WorkletGlobalScope : public nsIGlobalObject, public nsWrapperCache {
  47  public:
  48   NS_DECLARE_STATIC_IID_ACCESSOR(WORKLET_IID)
  49
  50   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  51   NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(WorkletGlobalScope)
  52
  53   WorkletGlobalScope(WorkletImpl*);
  54
  55   nsIGlobalObject* GetParentObject() const { return nullptr; }
  56
  57   JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
  58   virtual bool WrapGlobalObject(JSContext* aCx,
  59                                 JS::MutableHandle<JSObject*> aReflector) = 0;
  60
  61   JSObject* GetGlobalJSObject() override { return GetWrapper(); }
  62   JSObject* GetGlobalJSObjectPreserveColor() const override {
  63     return GetWrapperPreserveColor();
  64   }
  65
  66   nsISerialEventTarget* SerialEventTarget() const final;
  67   nsresult Dispatch(already_AddRefed<nsIRunnable>&&) const final;
  68
  69   already_AddRefed<Console> GetConsole(JSContext* aCx, ErrorResult& aRv);
  70
  71   WorkletImpl* Impl() const { return mImpl.get(); }
  72
  73   void Dump(const Optional<nsAString>& aString) const;
  74
  75   DOMHighResTimeStamp TimeStampToDOMHighRes(const TimeStamp& aTimeStamp) const {
  76     MOZ_ASSERT(!aTimeStamp.IsNull());
  77     TimeDuration duration = aTimeStamp - mCreationTimeStamp;
  78     return duration.ToMilliseconds();
  79   }
  80
  81   void InitModuleLoader(loader::WorkletModuleLoader* aModuleLoader);
  82
  83   JS::loader::ModuleLoaderBase* GetModuleLoader(
  84       JSContext* aCx = nullptr) override;
  85
  86   OriginTrials Trials() const override;
  87   Maybe<nsID> GetAgentClusterId() const override;
  88   bool IsSharedMemoryAllowed() const override;
  89   bool ShouldResistFingerprinting(RFPTarget aTarget) const override;
  90
  91  protected:
  92   ~WorkletGlobalScope();
  93
  94   JS::RealmOptions CreateRealmOptions() const;
  95
  96   const RefPtr<WorkletImpl> mImpl;
  97
  98  private:
  99   TimeStamp mCreationTimeStamp;
 100   RefPtr<Console> mConsole;
 101   RefPtr<loader::WorkletModuleLoader> mModuleLoader;
 102 };
 103
 104 NS_DEFINE_STATIC_IID_ACCESSOR(WorkletGlobalScope, WORKLET_IID)
 105
 106 }  // namespace dom
 107 }  // namespace mozilla
 108
 109 #endif  // mozilla_dom_WorkletGlobalScope_h