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// -*- Mode: C++; tab-width: 2; -*-
// vi: set ts=2:
//
#include <BALL/VIEW/WIDGETS/fileObserver.h>
#include <BALL/VIEW/DIALOGS/molecularFileDialog.h>
#include <BALL/VIEW/KERNEL/mainControl.h>
#include <BALL/KERNEL/system.h>
//#include <QtCore/QFSFileEngine>
#include <QtWidgets/QFileDialog>
namespace BALL
{
namespace VIEW
{
FileObserver::FileObserver(QWidget *parent, const char *name)
: DockWidget(parent, name)
{
hide();
default_visible_ = false;
registerWidget(this);
connect(&timer_, SIGNAL(timeout()), SLOT(updateFile()));
timer_.setInterval(1000);
}
FileObserver::~FileObserver()
{
#ifdef BALL_VIEW_DEBUG
Log.error() << "Destructing object " << (void *)this
<< " of class FileObserver" << std::endl;
#endif
}
void FileObserver::updateFile()
{
// aquire lock on composites:
if (file_name_ == "" || !lockComposites()) return;
// Compare time of file modification with the time of the last update
// QDateTime l1 = QFSFileEngine(file_name_.c_str()).fileTime(QAbstractFileEngine::ModificationTime);
// QDateTime l2 = QFSFileEngine(file_name_.c_str()).fileTime(QAbstractFileEngine::CreationTime);
QDateTime last_mod; //= max(l1, l2);
if (last_mod <= last_vis_time_)
{
unlockComposites();
return;
}
MolecularFileDialog* mf = MolecularFileDialog::getInstance(0);
if (mf == 0)
{
setStatusbarText(tr("No MolecularFileDialog available, aborting..."), true);
unlockComposites();
return;
}
System* system = mf->openMolecularFile(file_name_);
if (system == 0)
{
unlockComposites();
return;
}
HashSet<Composite*> composites = getMainControl()->getCompositeManager().getComposites();
HashSet<Composite*>::Iterator it = composites.begin();
for (; +it; ++it)
{
if (*it != system) getMainControl()->remove(**it);
}
last_vis_time_ = last_mod;
String time(ascii(last_vis_time_.toString("hh:mm:ss")));
setStatusbarText(String("File observer update: ") + time, true);
unlockComposites();
}
void FileObserver::start()
{
if (file_name_ == "") return;
last_vis_time_ = QDateTime();
setStatusbarText(String("Starting observer for ") + file_name_, true);
timer_.start();
}
void FileObserver::stop()
{
timer_.stop();
}
void FileObserver::setFileName(String filename)
{
file_name_ = filename;
}
String FileObserver::getFileName() const
{
return file_name_;
}
void FileObserver::setUpdateInterval(Size msec)
{
timer_.setInterval(msec);
}
void FileObserver::initializeWidget(MainControl&)
{
start_action_ =
insertMenuEntry(MainControl::FILE_MONITOR, tr("Monitor Molecular File"), this, SLOT(chooseFile()),
"Shortcut|File|Monitor|Start", QKeySequence(), tr("Monitor a molecular file for changes"),
UIOperationMode::MODE_ADVANCED);
stop_action_ =
insertMenuEntry(MainControl::FILE_MONITOR, tr("Stop monitoring"), this, SLOT(stop()),
"Shortcut|File|Monitor|Stop", QKeySequence(), tr("Stop monitoring a molecular file"),
UIOperationMode::MODE_ADVANCED);
}
// select a molecular file to monitor
void FileObserver::chooseFile()
{
stop();
MolecularFileDialog* mf = MolecularFileDialog::getInstance(0);
if (mf == 0) return;
QString file = QFileDialog::getOpenFileName(0,
"Choose a molecular file to monitor for changes",
getWorkingDir().c_str(),
mf->getSupportedFileFormats().c_str());
if (ascii(file) == "") return;
file_name_ = ascii(file);
start();
}
void FileObserver::checkMenu(MainControl& main_control)
{
if (stop_action_)
stop_action_->setEnabled(timer_.isActive());
if (start_action_)
start_action_->setEnabled(!main_control.isBusy());
}
} // VIEW
} // namespace BALL
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