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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_STREAMS_WRITABLE_STREAM_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_STREAMS_WRITABLE_STREAM_H_
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/bindings/trace_wrapper_v8_reference.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "v8/include/v8.h"
namespace blink {
// This is an implementation of the corresponding IDL interface.
// Use TraceWrapperMember to hold a reference to an instance of this class.
class CORE_EXPORT WritableStream : public ScriptWrappable {
DEFINE_WRAPPERTYPEINFO();
public:
// Call one of Init functions before using the instance.
WritableStream() = default;
~WritableStream() override = default;
// If an error happens, |exception_state.HadException()| will be true, and
// |this| will not be usable after that.
void Init(ScriptState*,
ScriptValue underlying_sink,
ScriptValue strategy,
ExceptionState& exception_state);
// Create* functions call Init* internally and return null when an error
// happens.
static WritableStream* Create(ScriptState*, ExceptionState&);
static WritableStream* Create(ScriptState*,
ScriptValue underlying_sink,
ExceptionState&);
static WritableStream* Create(ScriptState*,
ScriptValue underlying_sink,
ScriptValue strategy,
ExceptionState&);
static WritableStream* CreateFromInternalStream(
ScriptState* script_state,
ScriptValue internal_stream,
ExceptionState& exception_state) {
DCHECK(internal_stream.IsObject());
return CreateFromInternalStream(script_state,
internal_stream.V8Value().As<v8::Object>(),
exception_state);
}
static WritableStream* CreateFromInternalStream(
ScriptState*,
v8::Local<v8::Object> internal_stream,
ExceptionState&);
void Trace(Visitor* visitor) override;
// IDL defined functions
bool locked(ScriptState*, ExceptionState&) const;
ScriptPromise abort(ScriptState*, ExceptionState&);
ScriptPromise abort(ScriptState*, ScriptValue reason, ExceptionState&);
ScriptValue getWriter(ScriptState*, ExceptionState&);
base::Optional<bool> IsLocked(ScriptState*, ExceptionState&) const;
ScriptValue GetInternalStream(ScriptState*) const;
private:
bool InitInternal(ScriptState*, v8::Local<v8::Object> internal_stream);
static v8::MaybeLocal<v8::Object> CreateInternalStream(
ScriptState* script_state,
v8::Local<v8::Value> underlying_sink,
v8::Local<v8::Value> strategy);
TraceWrapperV8Reference<v8::Object> internal_stream_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_STREAMS_WRITABLE_STREAM_H_