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// Copyright 2019 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_READABLE_STREAM_DEFAULT_CONTROLLER_INTERFACE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_STREAMS_READABLE_STREAM_DEFAULT_CONTROLLER_INTERFACE_H_
#include "third_party/blink/renderer/bindings/core/v8/to_v8_for_core.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "v8/include/v8.h"
namespace blink {
class ScriptState;
class Visitor;
class CORE_EXPORT ReadableStreamDefaultControllerInterface
: public GarbageCollectedFinalized<
ReadableStreamDefaultControllerInterface> {
public:
static ReadableStreamDefaultControllerInterface* Create(
ScriptValue controller);
virtual ~ReadableStreamDefaultControllerInterface();
//
// Methods implemented by subclasses.
//
// Users of the ReadableStreamDefaultControllerInterface can call this to note
// that the stream has been canceled and thus they don't anticipate using the
// ReadableStreamDefaultControllerInterface anymore.
// (Close/DesiredSize/Enqueue/Error will become no-ops afterward.)
virtual void NoteHasBeenCanceled() = 0;
virtual void Close() = 0;
virtual double DesiredSize() const = 0;
virtual void Enqueue(v8::Local<v8::Value> js_chunk) const = 0;
virtual void Error(v8::Local<v8::Value> js_error) = 0;
// Helper methods
template <typename ChunkType>
void Enqueue(ChunkType chunk) const {
ScriptState::Scope scope(script_state_);
v8::Local<v8::Value> js_chunk = ToV8(chunk, script_state_);
Enqueue(js_chunk);
}
template <typename ErrorType>
void Error(ErrorType error) {
ScriptState::Scope scope(script_state_);
v8::Local<v8::Value> js_error = ToV8(error, script_state_);
Error(js_error);
}
virtual void Trace(Visitor*);
protected:
explicit ReadableStreamDefaultControllerInterface(ScriptState* script_state);
Member<ScriptState> script_state_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_STREAMS_READABLE_STREAM_DEFAULT_CONTROLLER_INTERFACE_H_
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