dom/worklet/Worklet.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_Worklet_h
   8 #define mozilla_dom_Worklet_h
   9
  10 #include "mozilla/Attributes.h"
  11 #include "nsRefPtrHashtable.h"
  12 #include "nsWrapperCache.h"
  13 #include "nsCOMPtr.h"
  14
  15 class nsPIDOMWindowInner;
  16
  17 namespace mozilla {
  18
  19 class ErrorResult;
  20 class WorkletImpl;
  21
  22 namespace dom {
  23
  24 class Promise;
  25 class WorkletFetchHandler;
  26 class WorkletScriptHandler;
  27 struct WorkletOptions;
  28 enum class CallerType : uint32_t;
  29
  30 class Worklet final : public nsISupports, public nsWrapperCache {
  31  public:
  32   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  33   NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(Worklet)
  34
  35   // |aOwnedObject| may be provided by the WorkletImpl as a parent thread
  36   // object to keep alive and traverse for CC as long as the Worklet has
  37   // references remaining.
  38   Worklet(nsPIDOMWindowInner* aWindow, RefPtr<WorkletImpl> aImpl,
  39           nsISupports* aOwnedObject = nullptr);
  40
  41   nsPIDOMWindowInner* GetParentObject() const { return mWindow; }
  42
  43   virtual JSObject* WrapObject(JSContext* aCx,
  44                                JS::Handle<JSObject*> aGivenProto) override;
  45
  46   already_AddRefed<Promise> AddModule(JSContext* aCx,
  47                                       const nsAString& aModuleURL,
  48                                       const WorkletOptions& aOptions,
  49                                       CallerType aCallerType, ErrorResult& aRv);
  50
  51   WorkletImpl* Impl() const { return mImpl; }
  52
  53   const nsTArray<nsString>& GetLocalizedStrings() const {
  54     return mLocalizedStrings;
  55   }
  56
  57  private:
  58   ~Worklet();
  59
  60   WorkletFetchHandler* GetImportFetchHandler(const nsACString& aURI);
  61
  62   void AddImportFetchHandler(const nsACString& aURI,
  63                              WorkletFetchHandler* aHandler);
  64
  65   nsCOMPtr<nsPIDOMWindowInner> mWindow;
  66   nsCOMPtr<nsISupports> mOwnedObject;
  67
  68   nsRefPtrHashtable<nsCStringHashKey, WorkletFetchHandler> mImportHandlers;
  69
  70   const RefPtr<WorkletImpl> mImpl;
  71
  72   nsTArray<nsString> mLocalizedStrings;
  73
  74   friend class WorkletFetchHandler;
  75   friend class WorkletScriptHandler;
  76 };
  77
  78 }  // namespace dom
  79 }  // namespace mozilla
  80
  81 #endif  // mozilla_dom_Worklet_h