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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_EXTENSIONS_API_SERIAL_SERIAL_IO_HANDLER_POSIX_H_
#define CHROME_BROWSER_EXTENSIONS_API_SERIAL_SERIAL_IO_HANDLER_POSIX_H_
#include "base/message_loop/message_loop.h"
#include "chrome/browser/extensions/api/serial/serial_io_handler.h"
namespace extensions {
class SerialIoHandlerPosix : public SerialIoHandler,
public base::MessageLoopForIO::Watcher {
protected:
// SerialIoHandler impl.
virtual void ReadImpl() OVERRIDE;
virtual void WriteImpl() OVERRIDE;
virtual void CancelReadImpl() OVERRIDE;
virtual void CancelWriteImpl() OVERRIDE;
virtual bool Flush() const OVERRIDE;
virtual bool GetControlSignals(
api::serial::DeviceControlSignals* control_signals) const OVERRIDE;
virtual bool SetControlSignals(
const api::serial::HostControlSignals& control_signals) OVERRIDE;
virtual bool ConfigurePort(
const api::serial::ConnectionOptions& options) OVERRIDE;
virtual bool GetPortInfo(api::serial::ConnectionInfo* info) const OVERRIDE;
virtual bool PostOpen() OVERRIDE;
private:
friend class SerialIoHandler;
SerialIoHandlerPosix();
virtual ~SerialIoHandlerPosix();
// base::MessageLoopForIO::Watcher implementation.
virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE;
void EnsureWatchingReads();
void EnsureWatchingWrites();
base::MessageLoopForIO::FileDescriptorWatcher file_read_watcher_;
base::MessageLoopForIO::FileDescriptorWatcher file_write_watcher_;
// Flags indicating if the message loop is watching the device for IO events.
bool is_watching_reads_;
bool is_watching_writes_;
DISALLOW_COPY_AND_ASSIGN(SerialIoHandlerPosix);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_API_SERIAL_SERIAL_IO_HANDLER_POSIX_H_
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