mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-27 06:43:32 +00:00
116 lines
4.3 KiB
C++
116 lines
4.3 KiB
C++
/* -*- 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 DOM_STREAMS_TRANSFORMSTREAM_H_
|
|
#define DOM_STREAMS_TRANSFORMSTREAM_H_
|
|
|
|
#include "TransformStreamDefaultController.h"
|
|
#include "mozilla/dom/BindingDeclarations.h"
|
|
#include "mozilla/dom/QueuingStrategyBinding.h"
|
|
|
|
#include "mozilla/dom/TransformerBinding.h"
|
|
#include "nsCycleCollectionParticipant.h"
|
|
#include "nsWrapperCache.h"
|
|
|
|
namespace mozilla::dom {
|
|
|
|
class WritableStream;
|
|
class ReadableStream;
|
|
class UniqueMessagePortId;
|
|
class MessagePort;
|
|
class TransformerAlgorithmsWrapper;
|
|
|
|
class TransformStream final : public nsISupports, public nsWrapperCache {
|
|
public:
|
|
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
|
|
NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(TransformStream)
|
|
|
|
// https://streams.spec.whatwg.org/#transformstream-set-up
|
|
// Intended to be used by interfaces using GenericTransformStream mixin.
|
|
MOZ_CAN_RUN_SCRIPT static already_AddRefed<TransformStream> CreateGeneric(
|
|
const GlobalObject& aGlobal, TransformerAlgorithmsWrapper& aAlgorithms,
|
|
ErrorResult& aRv);
|
|
|
|
// Internal slot accessors
|
|
bool Backpressure() const { return mBackpressure; }
|
|
Promise* BackpressureChangePromise() { return mBackpressureChangePromise; }
|
|
void SetBackpressure(bool aBackpressure);
|
|
MOZ_KNOWN_LIVE TransformStreamDefaultController* Controller() {
|
|
return mController;
|
|
}
|
|
void SetController(TransformStreamDefaultController& aController) {
|
|
MOZ_ASSERT(!mController);
|
|
mController = &aController;
|
|
}
|
|
|
|
// [Transferable]
|
|
// https://html.spec.whatwg.org/multipage/structured-data.html#transfer-steps
|
|
MOZ_CAN_RUN_SCRIPT bool Transfer(JSContext* aCx,
|
|
UniqueMessagePortId& aPortId1,
|
|
UniqueMessagePortId& aPortId2);
|
|
// https://html.spec.whatwg.org/multipage/structured-data.html#transfer-receiving-steps
|
|
static MOZ_CAN_RUN_SCRIPT bool ReceiveTransfer(
|
|
JSContext* aCx, nsIGlobalObject* aGlobal, MessagePort& aPort1,
|
|
MessagePort& aPort2, JS::MutableHandle<JSObject*> aReturnObject);
|
|
|
|
protected:
|
|
TransformStream(nsIGlobalObject* aGlobal, ReadableStream* aReadable,
|
|
WritableStream* aWritable);
|
|
explicit TransformStream(nsIGlobalObject* aGlobal);
|
|
|
|
~TransformStream();
|
|
|
|
MOZ_CAN_RUN_SCRIPT void Initialize(
|
|
JSContext* aCx, Promise* aStartPromise, double aWritableHighWaterMark,
|
|
QueuingStrategySize* aWritableSizeAlgorithm,
|
|
double aReadableHighWaterMark,
|
|
QueuingStrategySize* aReadableSizeAlgorithm, ErrorResult& aRv);
|
|
|
|
public:
|
|
nsIGlobalObject* GetParentObject() const { return mGlobal; }
|
|
JSObject* WrapObject(JSContext* aCx,
|
|
JS::Handle<JSObject*> aGivenProto) override;
|
|
|
|
// WebIDL methods
|
|
// TODO: Mark as MOZ_CAN_RUN_SCRIPT when IDL constructors can be (bug 1749042)
|
|
MOZ_CAN_RUN_SCRIPT_BOUNDARY static already_AddRefed<TransformStream>
|
|
Constructor(const GlobalObject& aGlobal,
|
|
const Optional<JS::Handle<JSObject*>>& aTransformer,
|
|
const QueuingStrategy& aWritableStrategy,
|
|
const QueuingStrategy& aReadableStrategy, ErrorResult& aRv);
|
|
|
|
ReadableStream* Readable() const { return mReadable; }
|
|
WritableStream* Writable() const { return mWritable; }
|
|
|
|
private:
|
|
nsCOMPtr<nsIGlobalObject> mGlobal;
|
|
|
|
// Internal slots
|
|
// MOZ_KNOWN_LIVE for slots that will never be reassigned
|
|
bool mBackpressure = false;
|
|
RefPtr<Promise> mBackpressureChangePromise;
|
|
RefPtr<TransformStreamDefaultController> mController;
|
|
RefPtr<ReadableStream> mReadable;
|
|
RefPtr<WritableStream> mWritable;
|
|
};
|
|
|
|
namespace streams_abstract {
|
|
|
|
MOZ_CAN_RUN_SCRIPT void TransformStreamErrorWritableAndUnblockWrite(
|
|
JSContext* aCx, TransformStream* aStream, JS::Handle<JS::Value> aError,
|
|
ErrorResult& aRv);
|
|
|
|
MOZ_CAN_RUN_SCRIPT void TransformStreamError(JSContext* aCx,
|
|
TransformStream* aStream,
|
|
JS::Handle<JS::Value> aError,
|
|
ErrorResult& aRv);
|
|
|
|
} // namespace streams_abstract
|
|
|
|
} // namespace mozilla::dom
|
|
|
|
#endif // DOM_STREAMS_TRANSFORMSTREAM_H_
|