121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
/****************************************************************************
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PFileWatcher.cpp
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Author: Andreas Suter
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e-mail: andreas.suter@psi.ch
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$Id$
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*****************************************************************************/
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/***************************************************************************
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* Copyright (C) 2009 by Andreas Suter *
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* andreas.suter@psi.ch *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <qfileinfo.h>
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#include <qstring.h>
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#include <qdatetime.h>
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#include <qtimer.h>
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#include <qmessagebox.h>
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#include "PFileWatcher.h"
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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PFileWatcher::PFileWatcher(const QString &fileName, const QDateTime &lastModified) : fFileName(fileName), fLastModified(lastModified)
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{
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fFileInfo = 0;
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fFileInfo = new QFileInfo(fFileName);
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if (!fFileInfo) {
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fValid = false;
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}
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}
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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PFileWatcher::~PFileWatcher()
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{
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if (fFileInfo) {
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delete fFileInfo;
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fFileInfo = 0;
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}
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}
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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bool PFileWatcher::modified()
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{
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bool result = false;
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fFileInfo->refresh();
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if (fFileInfo->lastModified() > fLastModified) {
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fLastModified = fFileInfo->lastModified();
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result = true;
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}
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return result;
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}
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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void PFileWatcher::modified(int timeout)
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{
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fTimerCheck = new QTimer(this);
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connect( fTimerCheck, SIGNAL(timeout()), this, SLOT(checkIfModified()) );
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QTimer::singleShot(timeout * 1000, this, SLOT(stopFileCheck()));
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fTimerCheck->start(1000);
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}
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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void PFileWatcher::checkIfModified()
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{
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fFileInfo->refresh();
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if (fFileInfo->lastModified() > fLastModified) {
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fLastModified = fFileInfo->lastModified();
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fTimerCheck->stop();
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emit changed();
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}
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}
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//----------------------------------------------------------------------------------------------------
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/**
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* <p>
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*/
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void PFileWatcher::stopFileCheck()
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{
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fTimerCheck->stop();
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}
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