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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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_ReadableStreamController_h
#define mozilla_dom_ReadableStreamController_h
#include "mozilla/ErrorResult.h"
#include "nsCycleCollectionParticipant.h"
#include "nsIGlobalObject.h"
#include "nsISupports.h"
#include "UnderlyingSourceCallbackHelpers.h"
namespace mozilla::dom {
struct ReadRequest;
class ReadableStream;
class ReadableStreamDefaultController;
class ReadableByteStreamController;
class ReadableStreamController : public nsISupports {
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS(ReadableStreamController)
ReadableStreamController(nsIGlobalObject* aGlobal);
nsIGlobalObject* GetParentObject() const { return mGlobal; }
virtual bool IsDefault() = 0;
virtual bool IsByte() = 0;
virtual ReadableStreamDefaultController* AsDefault() = 0;
virtual ReadableByteStreamController* AsByte() = 0;
MOZ_CAN_RUN_SCRIPT
virtual already_AddRefed<Promise> CancelSteps(JSContext* aCx,
JS::Handle<JS::Value> aReason,
ErrorResult& aRv) = 0;
MOZ_CAN_RUN_SCRIPT
virtual void PullSteps(JSContext* aCx, ReadRequest* aReadRequest,
ErrorResult& aRv) = 0;
// No JS implementable UnderlyingSource callback exists for this.
virtual void ReleaseSteps() = 0;
UnderlyingSourceAlgorithmsBase* GetAlgorithms() const { return mAlgorithms; }
void SetAlgorithms(UnderlyingSourceAlgorithmsBase& aAlgorithms) {
mAlgorithms = &aAlgorithms;
}
void ClearAlgorithms() {
MOZ_ASSERT(mAlgorithms);
mAlgorithms->ReleaseObjects();
mAlgorithms = nullptr;
}
ReadableStream* Stream() const { return mStream; }
void SetStream(ReadableStream* aStream);
protected:
nsCOMPtr<nsIGlobalObject> mGlobal;
// The algorithms for the underlying source
RefPtr<UnderlyingSourceAlgorithmsBase> mAlgorithms;
RefPtr<ReadableStream> mStream;
virtual ~ReadableStreamController() = default;
};
} // namespace mozilla::dom
#endif
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