dom/streams/TransformStreamDefaultController.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
   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 DOM_STREAMS_TRANSFORMSTREAMDEFAULTCONTROLLER_H_
   8 #define DOM_STREAMS_TRANSFORMSTREAMDEFAULTCONTROLLER_H_
   9
  10 #include "js/TypeDecls.h"
  11 #include "mozilla/AlreadyAddRefed.h"
  12 #include "mozilla/dom/BindingDeclarations.h"
  13 #include "mozilla/dom/QueuingStrategyBinding.h"
  14
  15 #include "mozilla/dom/TransformerBinding.h"
  16 #include "nsCycleCollectionParticipant.h"
  17 #include "nsWrapperCache.h"
  18
  19 namespace mozilla::dom {
  20
  21 class TransformStream;
  22 class TransformerAlgorithms;
  23
  24 class TransformStreamDefaultController final : public nsISupports,
  25                                                public nsWrapperCache {
  26  public:
  27   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  28   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(TransformStreamDefaultController)
  29
  30   MOZ_KNOWN_LIVE TransformStream* Stream();
  31   void SetStream(TransformStream& aStream);
  32   TransformerAlgorithms* Algorithms();
  33   void SetAlgorithms(TransformerAlgorithms* aTransformerAlgorithms);
  34
  35   explicit TransformStreamDefaultController(nsIGlobalObject* aGlobal);
  36
  37  protected:
  38   ~TransformStreamDefaultController();
  39
  40  public:
  41   nsIGlobalObject* GetParentObject() const { return mGlobal; }
  42   JSObject* WrapObject(JSContext* aCx,
  43                        JS::Handle<JSObject*> aGivenProto) override;
  44
  45   Nullable<double> GetDesiredSize() const;
  46
  47   MOZ_CAN_RUN_SCRIPT void Enqueue(JSContext* aCx, JS::Handle<JS::Value> aChunk,
  48                                   ErrorResult& aRv);
  49   MOZ_CAN_RUN_SCRIPT void Error(JSContext* aCx, JS::Handle<JS::Value> aError,
  50                                 ErrorResult& aRv);
  51   MOZ_CAN_RUN_SCRIPT void Terminate(JSContext* aCx, ErrorResult& aRv);
  52
  53  private:
  54   nsCOMPtr<nsIGlobalObject> mGlobal;
  55
  56   // Internal slots
  57   RefPtr<TransformStream> mStream;
  58   RefPtr<TransformerAlgorithms> mTransformerAlgorithms;
  59 };
  60
  61 void SetUpTransformStreamDefaultControllerFromTransformer(
  62     JSContext* aCx, TransformStream& aStream,
  63     JS::Handle<JSObject*> aTransformer, Transformer& aTransformerDict);
  64
  65 }  // namespace mozilla::dom
  66
  67 #endif  // DOM_STREAMS_TRANSFORMSTREAMDEFAULTCONTROLLER_H_