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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 THIRD_PARTY_BLINK_RENDERER_MODULES_FILESYSTEM_FILE_WRITER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_FILESYSTEM_FILE_WRITER_H_
#include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h"
#include "third_party/blink/renderer/core/dom/context_lifecycle_observer.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/modules/event_target_modules.h"
#include "third_party/blink/renderer/modules/filesystem/file_writer_base.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
namespace blink {
class Blob;
class DOMException;
class ExceptionState;
class ExecutionContext;
enum class FileErrorCode;
class FileWriter final : public EventTargetWithInlineData,
public FileWriterBase,
public ActiveScriptWrappable<FileWriter>,
public ContextLifecycleObserver {
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(FileWriter);
USING_PRE_FINALIZER(FileWriter, Dispose);
public:
static FileWriter* Create(ExecutionContext*);
explicit FileWriter(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 ready_state_; }
DOMException* error() const { return error_.Get(); }
// FileWriterBase
void DidWriteImpl(int64_t bytes, bool complete) override;
void DidTruncateImpl() override;
void DidFailImpl(base::File::Error error) override;
void DoTruncate(const KURL& path, int64_t offset) override;
void DoWrite(const KURL& path,
const String& blob_id,
int64_t offset) override;
void DoCancel() 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, kWritestart);
DEFINE_ATTRIBUTE_EVENT_LISTENER(progress, kProgress);
DEFINE_ATTRIBUTE_EVENT_LISTENER(write, kWrite);
DEFINE_ATTRIBUTE_EVENT_LISTENER(abort, kAbort);
DEFINE_ATTRIBUTE_EVENT_LISTENER(error, kError);
DEFINE_ATTRIBUTE_EVENT_LISTENER(writeend, kWriteend);
void Trace(blink::Visitor*) override;
private:
enum Operation {
kOperationNone,
kOperationWrite,
kOperationTruncate,
kOperationAbort
};
void CompleteAbort();
void DoOperation(Operation);
void SignalCompletion(base::File::Error error_code);
void FireEvent(const AtomicString& type);
void SetError(FileErrorCode, ExceptionState&);
void Dispose();
Member<DOMException> error_;
ReadyState ready_state_;
Operation operation_in_progress_;
Operation queued_operation_;
long long bytes_written_;
long long bytes_to_write_;
long long truncate_length_;
long long num_aborts_;
long long recursion_depth_;
double last_progress_notification_time_ms_;
Member<Blob> blob_being_written_;
int request_id_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_FILESYSTEM_FILE_WRITER_H_
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