base/bruno/asyncfile.h

/*
 * libjingle
 * Copyright 2004--2010, Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
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 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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#ifndef BRUNO_BASE_ASYNCFILE_H__
#define BRUNO_BASE_ASYNCFILE_H__

#include "sigslot.h"

namespace bruno_base {

// Provides the ability to perform file I/O asynchronously.
// TODO: Create a common base class with AsyncSocket.
class AsyncFile {
 public:
  AsyncFile();
  virtual ~AsyncFile();

  // Determines whether the file will receive read events.
  virtual bool readable() = 0;
  virtual void set_readable(bool value) = 0;

  // Determines whether the file will receive write events.
  virtual bool writable() = 0;
  virtual void set_writable(bool value) = 0;

  sigslot::signal1<AsyncFile*> SignalReadEvent;
  sigslot::signal1<AsyncFile*> SignalWriteEvent;
  sigslot::signal2<AsyncFile*, int> SignalCloseEvent;
};

}  // namespace bruno_base

#endif  // BRUNO_BASE_ASYNCFILE_H__