def __init__(self, szprefix, no_warn=False, parent=None):
"""Filler 2 class constructor."""
QWidget.__init__(self, parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
# check single instance
try:
self.single_instance = SingleInstance(LOCKFILE)
except IOError:
logger.error('another instance of Filler 2 is running, exiting...')
self.criticalError(_translate("MainWindow",
"Cannot acquire a single instance lock. There is "
"another Filler 2 program running on the system."))
# parse local SZARP configuration
try:
self.parser = IPKParser(szprefix)
except IOError as err:
logger.error("cannot read SZARP configuration")
logger.error(str(err))
self.criticalError(_translate("MainWindow",
"Cannot read SZARP configuration")
+ " (%s)." % err.bad_path)
sys.exit(1)
except ValueError as err:
logger.error(str(err))
self.criticalError(_translate("MainWindow",
"Non-valid SZARP database prefix."))
sys.exit(1)
logger.info("editing database of prefix '%s'", self.parser.ipk_prefix)
# verify SZARP prefix versus hostname
if no_warn == False:
try:
process = subprocess.Popen(
["/bin/hostname", "-s"], stdout=subprocess.PIPE)
out, err = process.communicate()
if err == None:
hostname = out[:-1]
if hostname != self.parser.ipk_prefix:
self.warningBox(_translate("MainWindow",
"Warning! Database prefix differs from hostname, "
"you are probably modifying non-local database."))
except OSError:
pass
### initialize Qt4 widgets ##
# name of the local configuration
self.ui.titleLabel.setText(self.parser.getTitle())
# list of parameter sets
self.ui.listOfSets.addItem(
_translate("MainWindow", "--- Choose a set of parameters ---"))
self.ui.listOfSets.addItems(self.parser.getSets())
self.ui.listOfSets.model().setData(
self.ui.listOfSets.model().index(0,0),
QVariant(0), Qt.UserRole-1)
self.ui.listOfSets.setEnabled(True)
# parameter's type combobox
self.dialog_factory = ValueDialogFactory()
for name, icon, desc in self.dialog_factory.get_dialogs():
self.ui.valueType.addItem(icon, desc, QVariant((name, desc)))
self.ui.valueType.model().setData(
self.ui.valueType.model().index(0,0),
QVariant(0), Qt.UserRole-1)
# date interval variables
self.fromDate = None
self.toDate = None
# table of changes
base = 64
self.ui.changesTable.setColumnCount(6)
self.ui.changesTable.setColumnWidth(0, 6*base-24) # param's draw_name
self.ui.changesTable.setColumnWidth(1, 3*base) # "from" date
self.ui.changesTable.setColumnWidth(2, 3*base) # "to" date
self.ui.changesTable.setColumnWidth(3, 3*base) # param's value type
self.ui.changesTable.setColumnWidth(4, base-20) # remove entry button
self.ui.changesTable.setColumnHidden(5, True) # param's full name
self.ui.changesTable.horizontalHeader().setVisible(False)
self.ui.changesTable.setRowCount(0)
class Filler2(QMainWindow):
"""SZARP Filler 2 application's main window (pyQt4)."""
def __init__(self, szprefix, no_warn=False, parent=None):
"""Filler 2 class constructor."""
QWidget.__init__(self, parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
# check single instance
try:
self.single_instance = SingleInstance(LOCKFILE)
except IOError:
logger.error('another instance of Filler 2 is running, exiting...')
self.criticalError(_translate("MainWindow",
"Cannot acquire a single instance lock. There is "
"another Filler 2 program running on the system."))
# parse local SZARP configuration
try:
self.parser = IPKParser(szprefix)
except IOError as err:
logger.error("cannot read SZARP configuration")
logger.error(str(err))
self.criticalError(_translate("MainWindow",
"Cannot read SZARP configuration")
+ " (%s)." % err.bad_path)
sys.exit(1)
except ValueError as err:
logger.error(str(err))
self.criticalError(_translate("MainWindow",
"Non-valid SZARP database prefix."))
sys.exit(1)
logger.info("editing database of prefix '%s'", self.parser.ipk_prefix)
# verify SZARP prefix versus hostname
if no_warn == False:
try:
process = subprocess.Popen(
["/bin/hostname", "-s"], stdout=subprocess.PIPE)
out, err = process.communicate()
if err == None:
hostname = out[:-1]
if hostname != self.parser.ipk_prefix:
self.warningBox(_translate("MainWindow",
"Warning! Database prefix differs from hostname, "
"you are probably modifying non-local database."))
except OSError:
pass
### initialize Qt4 widgets ##
# name of the local configuration
self.ui.titleLabel.setText(self.parser.getTitle())
# list of parameter sets
self.ui.listOfSets.addItem(
_translate("MainWindow", "--- Choose a set of parameters ---"))
self.ui.listOfSets.addItems(self.parser.getSets())
self.ui.listOfSets.model().setData(
self.ui.listOfSets.model().index(0,0),
QVariant(0), Qt.UserRole-1)
self.ui.listOfSets.setEnabled(True)
# parameter's type combobox
self.dialog_factory = ValueDialogFactory()
for name, icon, desc in self.dialog_factory.get_dialogs():
self.ui.valueType.addItem(icon, desc, QVariant((name, desc)))
self.ui.valueType.model().setData(
self.ui.valueType.model().index(0,0),
QVariant(0), Qt.UserRole-1)
# date interval variables
self.fromDate = None
self.toDate = None
# table of changes
base = 64
self.ui.changesTable.setColumnCount(6)
self.ui.changesTable.setColumnWidth(0, 6*base-24) # param's draw_name
self.ui.changesTable.setColumnWidth(1, 3*base) # "from" date
self.ui.changesTable.setColumnWidth(2, 3*base) # "to" date
self.ui.changesTable.setColumnWidth(3, 3*base) # param's value type
self.ui.changesTable.setColumnWidth(4, base-20) # remove entry button
self.ui.changesTable.setColumnHidden(5, True) # param's full name
self.ui.changesTable.horizontalHeader().setVisible(False)
self.ui.changesTable.setRowCount(0)
# end of __init__()
def criticalError(self, msg, title = None):
"""Display critical error dialog and terminate.
Arguments:
msg - text message to be displayed.
title - optional dialog title.
"""
if title is None:
title = "SZARP Filler 2 - " + \
_translate("MainWindow", "Critical Error")
QMessageBox.critical(self, title, msg)
sys.exit(1)
# end of criticalError()
def warningBox(self, msg, title = None):
"""Display warning dialog.
Arguments:
msg - text message to be displayed.
title - optional dialog title.
"""
if title is None:
title = "SZARP Filler 2 - " + _translate("MainWindow", "Warning")
QMessageBox.warning(self, title, msg)
# end of warningBox()
def infoBox(self, msg, title = None):
"""Display information dialog.
Arguments:
msg - text message to be displayed.
title - optional dialog title.
"""
if title is None:
title = "SZARP Filler 2 - " + _translate("MainWindow", "Information")
QMessageBox.information(self, title, msg)
# end of infoBox()
def questionBox(self, msg, title = None):
"""Display question dialog.
Arguments:
msg - text message to be displayed.
title - optional dialog title.
Returns:
QMessageBox.Yes | QMessageBox.No - user's answer.
"""
if title is None:
title = "SZARP Filler 2 - " + _translate("MainWindow", "Question")
return QMessageBox.question(self, title, msg,
QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)
# end of questionBox()
def onSetChosen(self, text):
"""Slot for signal activated(QString) from 'listOfSets' (QComboBox).
Arguments:
text - name of the chosen set.
"""
self.ui.paramList.clear()
self.ui.paramList.addItem(
_translate("MainWindow", "--- Choose a parameter ---"))
self.ui.paramList.model().setData(
self.ui.paramList.model().index(0,0),
QVariant(0), Qt.UserRole-1)
# insert a list of parameters from given set
for p in self.parser.getParams(unicode(text)):
self.ui.paramList.addItem(p.draw_name, p)
# activate/reset other ui elements
self.ui.paramList.setEnabled(True)
self.ui.paramList.setFocus()
self.ui.valueType.setCurrentIndex(0)
self.ui.valueType.setEnabled(False)
self.ui.addButton.setEnabled(False)
# end of onSetChosen()
def onParamChosen(self, index):
"""Slot for signal activated(QString) from 'paramList' (QComboBox).
Arguments:
text - name of chosen parameter (not used).
"""
# activate other ui elements
self.ui.fromDate.setEnabled(True)
self.ui.toDate.setEnabled(True)
self.ui.valueType.setEnabled(True)
self.type_dialog = None
self.validateInput()
# end of onParamChosen()
def onFromDate(self):
"""Slot for signal clicked() from 'fromDate' (QPushButton). Displays dialog
for choosing date and time.
"""
if self.fromDate is None:
if self.toDate is None:
dlg = DatetimeDialog_impl()
else:
dlg = DatetimeDialog_impl(start_date=
(self.toDate - datetime.timedelta(minutes=10)))
else:
if self.toDate is None or self.fromDate < self.toDate:
dlg = DatetimeDialog_impl(start_date=self.fromDate)
else:
dlg = DatetimeDialog_impl(start_date=
(self.toDate - datetime.timedelta(minutes=10)))
# execute DatetimeDialog
if dlg.exec_():
self.fromDate = dlg.getValue()
self.ui.fromDate.setText(_translate("MainWindow", "From:") + " " +
self.fromDate.strftime('%Y-%m-%d %H:%M'))
self.validateInput()
# end of onFromDate()
def onToDate(self):
"""Slot for signal clicked() from 'toDate' (QPushButton). Displays dialog
for choosing date and time.
"""
if self.toDate is None:
if self.fromDate is None:
dlg = DatetimeDialog_impl()
else:
dlg = DatetimeDialog_impl(start_date=
(self.fromDate + datetime.timedelta(minutes=10)))
else:
if self.fromDate is None or self.toDate > self.fromDate:
dlg = DatetimeDialog_impl(start_date=self.toDate)
else:
dlg = DatetimeDialog_impl(start_date=
(self.fromDate + datetime.timedelta(minutes=10)))
# execute DatetimeDialog
if dlg.exec_():
self.toDate = dlg.getValue()
self.ui.toDate.setText(_translate("MainWindow", "To:") + " " +
self.toDate.strftime('%Y-%m-%d %H:%M'))
self.validateInput()
# end of onToDate()
def onTypeChosen(self, index):
"""Slot for signal activated() from 'valueType' (QComboBox). Constructs
appropriate dialog from factory and collects chosen plot parameters.
"""
# fetch dialog and parameter data
dlg_name = self.ui.valueType.itemData(index).toPyObject()[0]
param_info = self.ui.paramList.itemData(self.ui.paramList.currentIndex()).toPyObject()
dlg = self.dialog_factory.construct(str(dlg_name),
param_info.prec, param_info.lswmsw,
parent = self)
# reset type items' texts
for i in range(self.ui.valueType.count()):
desc = self.ui.valueType.itemData(i).toPyObject()[1]
self.ui.valueType.setItemText(i, desc)
if dlg.exec_():
self.type_dialog = dlg
self.ui.valueType.setItemText(index, dlg.get_value_desc())
else:
self.ui.valueType.setCurrentIndex(0)
self.type_dialog = None
self.validateInput()
# end of onTypeChosen()
def validateInput(self):
"""Check whether all needed data is filled and valid. If do, "Add"
button is activated.
"""
if self.ui.paramList.currentIndex() != 0 and \
self.fromDate is not None and \
self.toDate is not None and \
self.ui.valueType.currentIndex() != 0:
self.ui.addButton.setEnabled(True)
else:
self.ui.addButton.setEnabled(False)
# end of validateInput()
def aboutQt(self):
"""Display about Qt4 dialog."""
QMessageBox.aboutQt(self)
def about(self):
"""Display about Filler 2 dialog."""
AboutDialog_impl().exec_()
def addChange(self):
"""Slot for signal clicked() from addButton (QPushButton). Adds
change-entry to changesTable (QTableWidget)."""
if self.fromDate >= self.toDate:
self.warningBox(_translate("MainWindow",
"\"To\" date is earlier (or equals) \"From\" date.\nAdding change aborted."))
return
if self.toDate >= datetime.datetime.now():
if QMessageBox.Yes != \
self.questionBox(_translate("MainWindow",
"You are trying to modify future data - "
"it will block SZARP from writing actual data in this period.\n\n"
"Are you sure that's what you really want to do?")):
return
param_info = self.ui.paramList.itemData(
self.ui.paramList.currentIndex()).toPyObject()
self.ui.changesTable.setRowCount(self.ui.changesTable.rowCount()+1)
self.addRow(self.ui.changesTable.rowCount() - 1,
param_info.name,
self.ui.paramList.currentText(),
self.fromDate,
self.toDate,
self.type_dialog,
param_info.lswmsw)
# reset type items' texts
for i in range(self.ui.valueType.count()):
desc = self.ui.valueType.itemData(i).toPyObject()[1]
self.ui.valueType.setItemText(i, desc)
self.ui.valueType.setCurrentIndex(0)
# end of addChange()
def addRow(self, row, fname, pname, from_date, to_date, typedlg, lswmsw):
"""Add row to changesTable (QTableWidget).
Arguments:
row - number of row to be set.
fname - full parameter name
pname - parameter's draw name
from_date - beginning of time period
to_date - end of time period
value - parameter's value
typedlg - object of input value dialog
lswmsw - whether parametr is a combined lsw/msw
"""
# visible columns
item_pname = QTableWidgetItem(unicode(pname))
item_pname.setFlags(Qt.ItemIsEnabled)
item_from_date = QTableWidgetItem(from_date.strftime('%Y-%m-%d %H:%M'))
item_from_date.setFlags(Qt.ItemIsEnabled)
item_from_date.setTextAlignment(Qt.AlignCenter)
item_to_date = QTableWidgetItem(to_date.strftime('%Y-%m-%d %H:%M'))
item_to_date.setFlags(Qt.ItemIsEnabled)
item_to_date.setTextAlignment(Qt.AlignCenter)
item_value = QTableWidgetItem(typedlg.get_value_desc())
item_value.setFlags(Qt.ItemIsEnabled)
item_value.setIcon(QIcon(typedlg.qicon_path))
item_value.setTextAlignment(Qt.AlignCenter)
# hidden column
item_fname = QTableWidgetItem(unicode(fname))
item_fname.setData(Qt.UserRole, QVariant((lswmsw, typedlg)))
item_fname.setFlags(Qt.ItemIsEnabled)
self.ui.changesTable.setItem(row, 0, item_pname)
self.ui.changesTable.setItem(row, 1, item_from_date)
self.ui.changesTable.setItem(row, 2, item_to_date)
self.ui.changesTable.setItem(row, 3, item_value)
self.ui.changesTable.setItem(row, 5, item_fname)
# "remove" button widget
rm_button = QPushButton(QIcon.fromTheme("window-close"), "")
rm_button.setToolTip(_translate("MainWindow", "Remove entry"))
rm_button.row_id = row
QObject.connect(rm_button, SIGNAL("clicked()"), self.removeChange)
self.ui.changesTable.setCellWidget(row, 4, rm_button)
# end of addRow()
def removeChange(self):
"""Slot for signal clicked() from rm_button (QPushButton). Removes
entry from changesTable (QTableWidget).
"""
if QMessageBox.Yes != \
self.questionBox(_translate("MainWindow", "Remove change?")):
return
row = self.sender().row_id
self.ui.changesTable.removeRow(row)
# update row_id for every row
for i in range(row, self.ui.changesTable.rowCount()):
self.ui.changesTable.cellWidget(i, 4).row_id -= 1
# end of removeChange()
def clearChanges(self):
"""Slot for action 'actionClear'. Removes all entries from
changesTable (QTableWidget).
"""
txt = _translate("MainWindow",
"Are you sure you want to clear all changes?")
if QMessageBox.Yes == self.questionBox(txt):
self.ui.changesTable.setRowCount(0)
# end of clearChanges()
def commitChanges(self):
"""Slot for action 'actionSaveData'. Commits all scheduled changes
to local szbase.
"""
if self.ui.changesTable.rowCount() == 0:
self.warningBox(_translate("MainWindow", "No changes to commit."))
return
# list and confirm
txt = _translate("MainWindow",
"Following parameters will be modified:") + "\n\n"
for i in range(0, self.ui.changesTable.rowCount()):
txt.append(" * %s\n\n" \
% (self.ui.changesTable.item(i,0).text()))
txt.append(_translate("MainWindow", "Commit changes?"))
if QMessageBox.Yes == self.questionBox(txt):
# construct list of changes to be committed
logger.info("committing scheduled changes...")
changes_list = []
for i in range(0, self.ui.changesTable.rowCount()):
start_date = datetime.datetime.strptime(
str(self.ui.changesTable.item(i,1).text()),
'%Y-%m-%d %H:%M')
end_date = datetime.datetime.strptime(
str(self.ui.changesTable.item(i,2).text()),
'%Y-%m-%d %H:%M')
lswmsw, typedlg = \
self.ui.changesTable.item(i,5).data(Qt.UserRole).toPyObject()
# generate list of 10-minute probes in given interval
dsec = int((end_date-start_date).total_seconds())
dts = [start_date + datetime.timedelta(minutes=x) \
for x in range(0, dsec / 60 + 1, 10)]
# generate probes' values
dvals = typedlg.generate(dts)
rmrk = typedlg.get_remark()
changes_list.append(SzChangeInfo(
draw_name = unicode(self.ui.changesTable.item(i,0).text()),
name = unicode(self.ui.changesTable.item(i,5).text()),
dvalues = dvals,
lswmsw = lswmsw,
remark = rmrk
))
# do the job (in a new thread)
szbw = SzbWriter(changes_list, self.parser)
szbp = SzbProgressWin(szbw, parent = self)
# reset all GUI elements
self.ui.changesTable.setRowCount(0)
self.fromDate = None
self.toDate = None
self.ui.listOfSets.setCurrentIndex(0)
self.ui.paramList.clear()
self.ui.paramList.setEnabled(False)
self.ui.fromDate.setText(_translate("MainWindow", "From:"))
self.ui.fromDate.setEnabled(False)
self.ui.toDate.setText(_translate("MainWindow", "To:"))
self.ui.toDate.setEnabled(False)
self.ui.valueType.setCurrentIndex(0)
self.ui.valueType.setEnabled(False)
self.ui.addButton.setEnabled(False)
# disable main window until job is finished
self.setEnabled(False)
# end of commitChanges()
def contextHelp(self):
"""Slot for action 'actionContextHelp'. Activates "What is that?" mode."""
QWhatsThis.enterWhatsThisMode()
def onViewHistory(self):
"""Slot for action 'actionViewHistory'. Shows history of committed changes."""
HistoryDialog_impl(self.parser, parent=self).exec_()