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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.
*/
#ifndef FileWriter_h
#define FileWriter_h
#include "bindings/core/v8/ActiveScriptWrappable.h"
#include "core/dom/ContextLifecycleObserver.h"
#include "core/dom/ExecutionContext.h"
#include "core/fileapi/FileError.h"
#include "modules/EventTargetModules.h"
#include "modules/filesystem/FileWriterBase.h"
#include "platform/heap/Handle.h"
#include "public/platform/WebFileWriterClient.h"
namespace blink {
class Blob;
class ExceptionState;
class ExecutionContext;
class FileWriter final : public EventTargetWithInlineData,
public FileWriterBase,
public ActiveScriptWrappable<FileWriter>,
public ContextLifecycleObserver,
public WebFileWriterClient {
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(FileWriter);
USING_PRE_FINALIZER(FileWriter, dispose);
public:
static FileWriter* create(ExecutionContext*);
~FileWriter() override;
enum ReadyState { kInit = 0, kWriting = 1, kDone = 2 };
void write(Blob*, ExceptionState&);
void seek(long long position, ExceptionState&);
void truncate(long long length, ExceptionState&);
void abort(ExceptionState&);
ReadyState getReadyState() const { return m_readyState; }
DOMException* error() const { return m_error.get(); }
// WebFileWriterClient
void didWrite(long long bytes, bool complete) override;
void didTruncate() override;
void didFail(WebFileError) override;
// ContextLifecycleObserver
void contextDestroyed(ExecutionContext*) override;
// ScriptWrappable
bool hasPendingActivity() const final;
// EventTarget
const AtomicString& interfaceName() const override;
ExecutionContext* getExecutionContext() const override {
return ContextLifecycleObserver::getExecutionContext();
}
DEFINE_ATTRIBUTE_EVENT_LISTENER(writestart);
DEFINE_ATTRIBUTE_EVENT_LISTENER(progress);
DEFINE_ATTRIBUTE_EVENT_LISTENER(write);
DEFINE_ATTRIBUTE_EVENT_LISTENER(abort);
DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
DEFINE_ATTRIBUTE_EVENT_LISTENER(writeend);
DECLARE_VIRTUAL_TRACE();
private:
enum Operation {
OperationNone,
OperationWrite,
OperationTruncate,
OperationAbort
};
explicit FileWriter(ExecutionContext*);
void completeAbort();
void doOperation(Operation);
void signalCompletion(FileError::ErrorCode);
void fireEvent(const AtomicString& type);
void setError(FileError::ErrorCode, ExceptionState&);
void dispose();
Member<DOMException> m_error;
ReadyState m_readyState;
Operation m_operationInProgress;
Operation m_queuedOperation;
long long m_bytesWritten;
long long m_bytesToWrite;
long long m_truncateLength;
long long m_numAborts;
long long m_recursionDepth;
double m_lastProgressNotificationTimeMS;
Member<Blob> m_blobBeingWritten;
};
} // namespace blink
#endif // FileWriter_h
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