class DBDD(QMainWindow, Ui_MainWindow):
def __init__(self, dbpath, parent=None):
"""Creates a new instance of DBDD.
@param dbpath Path to the dbdd database backend.
@param parent Qt Parent."""
super(DBDD, self).__init__(parent)
self.setupUi(self)
self._setupAttributes()
self._updateStats()
def _setupAttributes(self):
"""Sets up all private attributes."""
self._db = DatabaseBackend(dbpath)
self._trainFilter = TrainFilter(self)
self._overviewModel = OverviewModel(self._db, self.treeOverview)
self._overviewModel.setFilter(self._trainFilter)
self.treeOverview.setModel(self._overviewModel)
self._setupStatsTimer()
self._connectSignals()
self._populateProductFilter()
self._populateConnectionsFilter()
def _setupStatsTimer(self):
"""Sets up the timer that is used to refresh the statistics."""
self._statsTimer = QTimer(self)
self._statsTimer.setInterval(10 * 1000) # update every 10 seconds
self._statsTimer.timeout.connect(self._updateStats)
self._statsTimer.start()
def _connectSignals(self):
"""Sets up all signal/slot connections."""
self._trainFilter.filterChanged.connect(self._updateStats)
self.buttonAddConnection.clicked.connect(self.showAddConnectionDialog)
self.checkBoxConnectionFilter.toggled.connect(self._updateFilter)
self.checkBoxDateFilter.toggled.connect(self._updateFilter)
self.checkBoxTimeFilter.toggled.connect(self._updateFilter)
self.checkBoxProductFilter.toggled.connect(self._updateFilter)
self.checkBoxDelayFilter.toggled.connect(self._updateFilter)
self.comboBoxConnections.currentIndexChanged.connect(self._updateFilter)
self.comboBoxProducts.currentIndexChanged.connect(self._updateFilter)
self.timeEditFrom.timeChanged.connect(self._updateFilter)
self.timeEditTo.timeChanged.connect(self._updateFilter)
self.dateEditFrom.dateChanged.connect(self._updateFilter)
self.dateEditTo.dateChanged.connect(self._updateFilter)
self.spinBoxDelay.valueChanged.connect(self._updateFilter)
self.action_Create_Report.triggered.connect(self.showReportDialog)
self.buttonCreateReport.clicked.connect(self.showReportDialog)
def generateReport(self, connections):
"""Generates a report for the given connections."""
gen = ReportGenerator(self._db, connections)
gen.doit()
def showReportDialog(self):
"""Shows a dialog that lets the user generate a report."""
d = DialogCreateReport(self._db, self)
ret = d.exec_()
if ret == DialogCreateReport.Accepted:
cons = d.getSelectedConnections()
if len(cons) > 0:
self.generateReport(cons)
else:
msg = QMessageBox()
msg.setText(self.tr("No connections selected"))
msg.setIcon(QMessageBox.Critical)
msg.exec_()
def showAddConnectionDialog(self):
"""Shows a dialog which lets the user add new connections."""
d = DialogAddConnection(self)
ret = d.exec_()
if ret == DialogAddConnection.Accepted:
self._db.addConnection(d.startStation(), d.endStation())
self._populateConnectionsFilter()
self._connectionsModel.reset()
def _updateFilter(self):
"""Updates the TrainFilter.
Since the OverviewModel uses a reference of this TrainFilter, all
changes here will automatically take effect in the OverviewModel."""
fil = None
if self.checkBoxConnectionFilter.checkState() == Qt.Checked:
fil = self.comboBoxConnections.itemData(self.comboBoxConnections.currentIndex())
self._trainFilter.setConnectionFilter(fil)
fil = None
if self.checkBoxDateFilter.checkState() == Qt.Checked:
f, t = self.dateEditFrom.date(), self.dateEditTo.date()
fil = (
(".".join([str(f.day()), str(f.month()), str(f.year())])),
(".".join([str(t.day()), str(t.month()), str(t.year())])),
)
self._trainFilter.setDateFilter(fil)
fil = None
if self.checkBoxTimeFilter.checkState() == Qt.Checked:
f, t = self.timeEditFrom.time(), self.timeEditTo.time()
f = strptime(":".join([str(f.hour()), str(f.minute())]), "%H:%M")
t = strptime(":".join([str(t.hour()), str(t.minute())]), "%H:%M")
fil = (f, t)
self._trainFilter.setTimeFilter(fil)
fil = None
if self.checkBoxProductFilter.checkState() == Qt.Checked:
fil = self.comboBoxProducts.currentText()
self._trainFilter.setProductFilter(fil)
fil = None
if self.checkBoxDelayFilter.checkState() == Qt.Checked:
fil = self.spinBoxDelay.value()
self._trainFilter.setDelayFilter(fil)
def _updateStats(self):
"""Queries the DatabaseBackend, creates statistics and displays them.
"""
trains = self._db.getTrains()
totalOnTime = 0
totalDelayed = 0
totalDelay = 0
totalLogged = 0
for t in trains:
totalLogged += 1
if not t.delay() is None:
totalDelay += t.delay()
totalDelayed += 1
else:
totalOnTime += 1
if totalLogged > 0:
self.labelTotalLogged.setText(str(totalLogged))
self.labelTotalOnTime.setText(str(totalOnTime))
self.labelTotalDelayed.setText(str(totalDelayed))
self.labelOnTimePercentage.setText(str(100.0 - float(totalDelayed) / float(totalLogged) * 100.0) + "%")
self.labelTotalDelay.setText(str(totalDelay))
self._updateFilteredStats()
def _updateFilteredStats(self):
"""Updates the stats for the currently selected connection."""
self.labelTotalLoggedConnection.setText("")
self.labelTotalOnTimeConnection.setText("")
self.labelTotalDelayedConnection.setText("")
self.labelOnTimePercentageConnection.setText("")
self.labelTotalDelayConnection.setText("")
self.labelConnection.setText("")
con = self._trainFilter.connectionFilter()
if not con is None:
self.labelConnection.setText("{0} -> {1}".format(con[0], con[1]))
else:
self.labelConnection.setText("All Connections")
trains = self._db.getTrainsFiltered(self._trainFilter)
totalOnTime = 0
totalDelayed = 0
totalDelay = 0
totalLogged = 0
for t in trains:
totalLogged += 1
if not t.delay() is None:
totalDelay += t.delay()
totalDelayed += 1
else:
totalOnTime += 1
if totalLogged > 0:
self.labelTotalLoggedConnection.setText(str(totalLogged))
self.labelTotalOnTimeConnection.setText(str(totalOnTime))
self.labelTotalDelayedConnection.setText(str(totalDelayed))
self.labelOnTimePercentageConnection.setText(
str(100.0 - float(totalDelayed) / float(totalLogged) * 100.0) + "%"
)
self.labelTotalDelayConnection.setText(str(totalDelay))
def _populateConnectionsFilter(self):
"""Retrieves all connections from the database and populates the
connections combobox."""
self.comboBoxConnections.clear()
for c in self._db.getConnections():
self.comboBoxConnections.addItem(c[0] + " -> " + c[1], c)
def _populateProductFilter(self):
"""Retrieves all product strings from the database and populates the
product combobox."""
products = {}
for t in self._db.getTrains():
products[t.product()] = True
for p in products.keys():
self.comboBoxProducts.addItem(p)
