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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
#if ENABLE(FILE_SYSTEM)
#include "ActiveDOMObject.h"
#include "AsyncFileWriterClient.h"
#include "EventTarget.h"
#include "FileWriterBase.h"
#include "ScriptExecutionContext.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class Blob;
class ScriptExecutionContext;
class FileWriter : public FileWriterBase, public ActiveDOMObject, public EventTarget, public AsyncFileWriterClient {
public:
static PassRefPtr<FileWriter> create(ScriptExecutionContext*);
enum ReadyState {
INIT = 0,
WRITING = 1,
DONE = 2
};
void write(Blob*, ExceptionCode&);
void seek(long long position, ExceptionCode&);
void truncate(long long length, ExceptionCode&);
void abort(ExceptionCode&);
ReadyState readyState() const { return m_readyState; }
FileError* error() const { return m_error.get(); }
// AsyncFileWriterClient
void didWrite(long long bytes, bool complete);
void didTruncate();
void didFail(FileError::ErrorCode);
// ActiveDOMObject
virtual bool canSuspend() const;
virtual void stop();
// EventTarget
virtual const AtomicString& interfaceName() const;
virtual ScriptExecutionContext* scriptExecutionContext() const { return ActiveDOMObject::scriptExecutionContext(); }
using RefCounted<FileWriterBase>::ref;
using RefCounted<FileWriterBase>::deref;
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);
private:
enum Operation {
OperationNone,
OperationWrite,
OperationTruncate,
OperationAbort
};
FileWriter(ScriptExecutionContext*);
virtual ~FileWriter();
// EventTarget
virtual void refEventTarget() { ref(); }
virtual void derefEventTarget() { deref(); }
virtual EventTargetData* eventTargetData() { return &m_eventTargetData; }
virtual EventTargetData* ensureEventTargetData() { return &m_eventTargetData; }
void completeAbort();
void doOperation(Operation);
void signalCompletion(FileError::ErrorCode);
void fireEvent(const AtomicString& type);
void setError(FileError::ErrorCode, ExceptionCode&);
RefPtr<FileError> m_error;
EventTargetData m_eventTargetData;
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;
RefPtr<Blob> m_blobBeingWritten;
};
} // namespace WebCore
#endif // ENABLE(FILE_SYSTEM)
#endif // FileWriter_h
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