include/svtools/filechangedchecker.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #ifndef SVTOOLS_INCLUDED_FILECHANGEDCHECKER_HXX
  11 #define SVTOOLS_INCLUDED_FILECHANGEDCHECKER_HXX
  12
  13 #include "svtools/svtdllapi.h"
  14 #include <boost/function.hpp>
  15 #include <osl/file.hxx>
  16 #include <vcl/timer.hxx>
  17
  18 /** Periodically checks if a file has been modified
  19
  20     Instances of this class setup a vcl timer to occasionally wake up
  21     check whether file modification time has changed.
  22  */
  23 class SVT_DLLPUBLIC FileChangedChecker
  24 {
  25 private :
  26     Timer                    mTimer;
  27     OUString            mFileName;
  28     TimeValue                mLastModTime;
  29     ::boost::function0<void> mpCallback;
  30
  31     bool SVT_DLLPRIVATE getCurrentModTime(TimeValue& o_rValue) const;
  32     DECL_LINK(TimerHandler, void *);
  33
  34 public :
  35     void resetTimer();
  36     bool hasFileChanged();
  37     FileChangedChecker(const OUString& rFilename, const ::boost::function0<void>& rCallback);
  38 };
  39
  40 #endif