blob: d6507c40cb8942cd879946949ae644d1d668a601 [file] [log] [blame]
/*
* Copyright (C) 2019 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "Blob.h"
#include "Document.h"
#include "ExceptionCode.h"
#include "FileReaderLoader.h"
#include "FileReaderLoaderClient.h"
#include "SharedBuffer.h"
#include <JavaScriptCore/ArrayBuffer.h>
#include <wtf/CompletionHandler.h>
#include <wtf/Optional.h>
namespace WebCore {
class BlobLoader final : public FileReaderLoaderClient {
WTF_MAKE_FAST_ALLOCATED;
public:
BlobLoader(Document*, Blob&, Function<void()>&&);
~BlobLoader();
bool isLoading() const { return !!m_loader; }
const RefPtr<JSC::ArrayBuffer>& result() const { return m_buffer; }
Optional<ExceptionCode> errorCode() const { return m_errorCode; }
private:
void didStartLoading() final { }
void didReceiveData() final { }
void didFinishLoading() final;
void didFail(ExceptionCode errorCode) final;
void complete();
std::unique_ptr<FileReaderLoader> m_loader;
RefPtr<JSC::ArrayBuffer> m_buffer;
Optional<ExceptionCode> m_errorCode;
Function<void()> m_completionHandler;
};
inline BlobLoader::BlobLoader(WebCore::Document* document, Blob& blob, Function<void()>&& completionHandler)
: m_loader(makeUnique<FileReaderLoader>(FileReaderLoader::ReadAsArrayBuffer, this))
, m_completionHandler(WTFMove(completionHandler))
{
m_loader->start(document, blob);
}
inline BlobLoader::~BlobLoader()
{
if (m_loader)
m_loader->cancel();
// FIXME: Call m_completionHandler to migrate it from a Function to a CompletionHandler.
}
inline void BlobLoader::didFinishLoading()
{
m_buffer = m_loader->arrayBufferResult();
complete();
}
inline void BlobLoader::didFail(ExceptionCode errorCode)
{
m_errorCode = errorCode;
complete();
}
inline void BlobLoader::complete()
{
m_loader = nullptr;
m_completionHandler();
}
} // namespace WebCore