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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 "EventTarget.h"
#include "FileWriterClient.h"
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class AsyncFileWriter;
class Blob;
class FileError;
class ScriptExecutionContext;
class FileWriter : public RefCounted<FileWriter>, public ActiveDOMObject, public EventTarget, public FileWriterClient {
public:
static PassRefPtr<FileWriter> create(ScriptExecutionContext* context)
{
return adoptRef(new FileWriter(context));
}
void initialize(PassOwnPtr<AsyncFileWriter> writer, long long length);
enum ReadyState {
INIT = 0,
WRITING = 1,
DONE = 2
};
void write(Blob* data, ExceptionCode& ec);
void seek(long long position, ExceptionCode& ec);
void truncate(long long length, ExceptionCode& ec);
void abort(ExceptionCode& ec);
ReadyState readyState() const { return m_readyState; }
FileError* error() const { return m_error.get(); }
long long position() const { return m_position; }
long long length() const { return m_length; }
// FileWriterClient
void didWrite(long long bytes, bool complete);
void didTruncate(long long length);
void didFail(ExceptionCode ec);
// ActiveDOMObject
virtual bool canSuspend() const;
virtual bool hasPendingActivity() const;
virtual void stop();
// EventTarget
virtual FileWriter* toFileWriter() { return this; }
virtual ScriptExecutionContext* scriptExecutionContext() const { return ActiveDOMObject::scriptExecutionContext(); }
using RefCounted<FileWriter>::ref;
using RefCounted<FileWriter>::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:
FileWriter(ScriptExecutionContext*);
virtual ~FileWriter();
friend class WTF::RefCounted<FileWriter>;
// EventTarget
virtual void refEventTarget() { ref(); }
virtual void derefEventTarget() { deref(); }
virtual EventTargetData* eventTargetData() { return &m_eventTargetData; }
virtual EventTargetData* ensureEventTargetData() { return &m_eventTargetData; }
void fireEvent(const AtomicString& type);
RefPtr<FileError> m_error;
EventTargetData m_eventTargetData;
OwnPtr<AsyncFileWriter> m_writer;
ReadyState m_readyState;
long long m_position;
long long m_length;
long long m_bytesWritten;
long long m_bytesToWrite;
};
} // namespace WebCore
#endif // ENABLE(FILE_SYSTEM)
#endif // FileWriter_h
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