FileWatcher.h

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// --------------------------------------------------------------------------
//                   OpenMS -- Open-Source Mass Spectrometry
// --------------------------------------------------------------------------
// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
// ETH Zurich, and Freie Universitaet Berlin 2002-2012.
//
// This software is released under a three-clause BSD license:
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//    may be used to endorse or promote products derived from this software
//    without specific prior written permission.
// For a full list of authors, refer to the file AUTHORS.
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// --------------------------------------------------------------------------
// $Maintainer: Timo Sachsenberg $
// $Authors: Marc Sturm $
// --------------------------------------------------------------------------


#ifndef OPENMS_SYSTEM_FILEWATCHER_H
#define OPENMS_SYSTEM_FILEWATCHER_H

//OpenMS
#include <OpenMS/CONCEPT/Types.h>
#include <OpenMS/DATASTRUCTURES/Map.h>
#include <OpenMS/DATASTRUCTURES/String.h>

//Qt
#include <QtCore/QFileSystemWatcher>

//STL
#include <map>

namespace OpenMS
{
  class String;

  class FileWatcher :
    public QFileSystemWatcher       //find out why ICC requires public instead of protected
  {
    Q_OBJECT

public:
    OPENMS_DLLAPI FileWatcher(QObject * parent = 0);

    OPENMS_DLLAPI virtual ~FileWatcher();

    inline void setDelayInSeconds(DoubleReal delay)
    {
      delay_in_seconds_ = delay;
    }

    inline void addFile(const String & path)
    {
      QFileSystemWatcher::addPath(path.toQString());
    }

    inline void removeFile(const String & path)
    {
      QFileSystemWatcher::removePath(path.toQString());
    }

signals:
    OPENMS_DLLAPI void fileChanged(const String &);

protected slots:
    OPENMS_DLLAPI void monitorFileChanged_(const QString & name);
    OPENMS_DLLAPI void timerTriggered_();

protected:
    Map<QString, QString> timers_;
    DoubleReal delay_in_seconds_;
  };

  // OPENMS_DLLAPI extern FileWatcher myFileWatcher_instance;
}

#endif // OPENMS_SYSTEM_FILE_H