Worklet.h - mozsearch

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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_Worklet_h

#define mozilla_dom_Worklet_h

#include "mozilla/Attributes.h"

#include "nsRefPtrHashtable.h"

#include "nsWrapperCache.h"

#include "nsCOMPtr.h"

class nsPIDOMWindowInner;

namespace mozilla {

class ErrorResult;

class WorkletImpl;

namespace dom {

class Promise;

class WorkletFetchHandler;

class WorkletScriptHandler;

struct WorkletOptions;

enum class CallerType : uint32_t;

class Worklet final : public nsISupports, public nsWrapperCache {

 public:

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(Worklet)

  // |aOwnedObject| may be provided by the WorkletImpl as a parent thread

  // object to keep alive and traverse for CC as long as the Worklet has

  // references remaining.

  Worklet(nsPIDOMWindowInner* aWindow, RefPtr<WorkletImpl> aImpl,

          nsISupports* aOwnedObject = nullptr);

  nsPIDOMWindowInner* GetParentObject() const { return mWindow; }

  virtual JSObject* WrapObject(JSContext* aCx,

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

  already_AddRefed<Promise> AddModule(JSContext* aCx,

                                      const nsAString& aModuleURL,

                                      const WorkletOptions& aOptions,

                                      CallerType aCallerType, ErrorResult& aRv);

  WorkletImpl* Impl() const { return mImpl; }

  const nsTArray<nsString>& GetLocalizedStrings() const {

    return mLocalizedStrings;

 private:

  ~Worklet();

  WorkletFetchHandler* GetImportFetchHandler(const nsACString& aURI);

  void AddImportFetchHandler(const nsACString& aURI,

                             WorkletFetchHandler* aHandler);

  nsCOMPtr<nsPIDOMWindowInner> mWindow;

  nsCOMPtr<nsISupports> mOwnedObject;

  nsRefPtrHashtable<nsCStringHashKey, WorkletFetchHandler> mImportHandlers;

  const RefPtr<WorkletImpl> mImpl;

  nsTArray<nsString> mLocalizedStrings;

  friend class WorkletFetchHandler;

  friend class WorkletScriptHandler;

};

}  // namespace dom

}  // namespace mozilla

#endif  // mozilla_dom_Worklet_h