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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "ActiveDOMObject.h"
#include "DOMException.h"
#include "EventTarget.h"
#include "ExceptionCode.h"
#include "ExceptionOr.h"
#include "FileReaderLoader.h"
#include "FileReaderLoaderClient.h"
#include "FileReaderSync.h"
#include <wtf/HashMap.h>
#include <wtf/UniqueRef.h>
namespace JSC {
class ArrayBuffer;
}
namespace WebCore {
class Blob;
class FileReader final : public RefCounted<FileReader>, public ActiveDOMObject, public EventTarget, private FileReaderLoaderClient {
WTF_MAKE_ISO_ALLOCATED(FileReader);
public:
static Ref<FileReader> create(ScriptExecutionContext&);
virtual ~FileReader();
enum ReadyState {
EMPTY = 0,
LOADING = 1,
DONE = 2
};
ExceptionOr<void> readAsArrayBuffer(Blob&);
ExceptionOr<void> readAsBinaryString(Blob&);
ExceptionOr<void> readAsText(Blob&, const String& encoding);
ExceptionOr<void> readAsDataURL(Blob&);
void abort();
void doAbort();
ReadyState readyState() const { return m_state; }
DOMException* error() { return m_error.get(); }
FileReaderLoader::ReadType readType() const { return m_readType; }
std::optional<std::variant<String, RefPtr<JSC::ArrayBuffer>>> result() const;
using RefCounted::ref;
using RefCounted::deref;
private:
explicit FileReader(ScriptExecutionContext&);
// ActiveDOMObject.
const char* activeDOMObjectName() const final;
void stop() final;
bool virtualHasPendingActivity() const final;
EventTargetInterface eventTargetInterface() const final { return FileReaderEventTargetInterfaceType; }
ScriptExecutionContext* scriptExecutionContext() const final { return ActiveDOMObject::scriptExecutionContext(); }
void refEventTarget() final { ref(); }
void derefEventTarget() final { deref(); }
void enqueueTask(Function<void()>&&);
void didStartLoading() final;
void didReceiveData() final;
void didFinishLoading() final;
void didFail(ExceptionCode errorCode) final;
ExceptionOr<void> readInternal(Blob&, FileReaderLoader::ReadType);
void fireErrorEvent(int httpStatusCode);
void fireEvent(const AtomString& type);
ReadyState m_state { EMPTY };
bool m_finishedLoading { false };
RefPtr<Blob> m_blob;
FileReaderLoader::ReadType m_readType { FileReaderLoader::ReadAsBinaryString };
String m_encoding;
std::unique_ptr<FileReaderLoader> m_loader;
RefPtr<DOMException> m_error;
MonotonicTime m_lastProgressNotificationTime { MonotonicTime::nan() };
HashMap<uint64_t, Function<void()>> m_pendingTasks;
};
} // namespace WebCore
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