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// --------------------------------------------------------------------------
// OpenMS -- Open-Source Mass Spectrometry
// --------------------------------------------------------------------------
// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
// ETH Zurich, and Freie Universitaet Berlin 2002-2013.
//
// This software is released under a three-clause BSD license:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of any author or any participating institution
// 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.
// --------------------------------------------------------------------------
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL ANY OF THE AUTHORS OR THE CONTRIBUTING
// INSTITUTIONS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// --------------------------------------------------------------------------
// $Maintainer: Timo Sachsenberg $
// $Authors: Marc Sturm $
// --------------------------------------------------------------------------
#include <OpenMS/SYSTEM/FileWatcher.h>
#include <QtCore/QTimer>
using namespace std;
namespace OpenMS
{
FileWatcher::FileWatcher(QObject * parent) :
QFileSystemWatcher(parent),
timers_(),
delay_in_seconds_(1.0)
{
//Connect the slot for monitoring file changes
connect(this, SIGNAL(fileChanged(const QString &)), this, SLOT(monitorFileChanged_(const QString &)));
}
FileWatcher::~FileWatcher()
{
}
void FileWatcher::monitorFileChanged_(const QString & name)
{
//static timer counter
static int timer_id = 0;
//cout << "File changed: " << String(name) << endl;
//Look up if there is already a timer for this file
QTimer * timer = 0;
for (map<QString, QString>::const_iterator it = timers_.begin(); it != timers_.end(); ++it)
{
if (it->second == name) //we found the timer name and id
{
//cout << " - Found timer name: " << String(it->second) << endl;
//search for the timer instance with the corresponding Id
timer = findChild<QTimer *>(it->first);
}
}
//timer does not exist => create and start a new one
if (!timer)
{
//cout << " - no timer found => creating a new one with name: ";
timer = new QTimer(this);
timer->setInterval((int)(1000.0 * delay_in_seconds_));
timer->setSingleShot(true);
timer->setObjectName(QString::number(++timer_id));
connect(timer, SIGNAL(timeout()), this, SLOT(timerTriggered_()));
timer->start();
timers_[QString::number(timer_id)] = name;
//cout << timer_id << endl;
}
//timer exists => restart it as the file changed another time
else
{
//cout << " - timer found => resetting" << endl;
timer->start();
}
}
void FileWatcher::timerTriggered_()
{
//cout << "Timer activated" << endl;
//get the timer instance
QTimer * timer = qobject_cast<QTimer *>(sender());
//emit the final for the file corresponding to the timer name
//cout << " - timer name: " << String(timer->objectName()) << endl;
//cout << " - timer file: " << String(timers_[timer->objectName()]) << endl;
emit fileChanged(String(timers_[timer->objectName()]));
//erase the timer name from the list
timers_.erase(timer->objectName());
}
//OPENMS_DLLAPI FileWatcher myFileWatcher_instance; // required, such that the moc file get generated during building OpenMS.dll, not later during OpenMS_GUI.dll as DLL flags are wrong then
} // namespace OpenMS
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