class MainWindow(QMainWindow):
"""
Initialization
"""
def __init__(self, rulesModel, logoFnam, *args):
QMainWindow.__init__(self, *args)
self.rulesModel = rulesModel
self.rulesModel.dataChanged.connect(self._statusRefresh)
self.cancelled = True # for to handle win close box the same as Cancel button
self.mainHSplit = QSplitter(self) # data | buttons
self.mainHSplit.setChildrenCollapsible(False)
self.setCentralWidget(self.mainHSplit)
self.mainVSplit = QSplitter(Qt.Vertical)
self.mainVSplit.setChildrenCollapsible(False)
self.mainHSplit.addWidget(self.mainVSplit)
self._drawRules()
self.mainVSplit.addWidget(self.rulesView)
self.condActSplit = QSplitter()
self.condActSplit.setChildrenCollapsible(False)
self._drawCondAct()
self.mainVSplit.addWidget(self.condActSplit)
# let rules view resize vertically two times faster than cond/action view
self.rulesView.setSizeIncrement(self.rulesView.sizeIncrement().width(),
2 * self.condView.sizeIncrement().height())
self._drawButtons(logoFnam)
self.setStatusBar(QStatusBar())
self.condView.horizontalHeader().setCascadingSectionResizes(True)
self.rulesView.selectRow(0)
def _drawRules(self):
self.rulesView = QTableView()
self.rulesView.setModel(self.rulesModel)
self.rulesView.setEditTriggers(QAbstractItemView.AllEditTriggers)
self.rulesView.setSelectionBehavior(QAbstractItemView.SelectRows)
self.rulesView.setSelectionMode(QAbstractItemView.SingleSelection)
self.rulesView.horizontalHeader().setStretchLastSection(True)
self.rulesView.resizeColumnsToContents()
#self.rulesView.verticalHeader().setMovable(True) # row remapping - see QHeaderView.logicalIndex()
#self.rulesView.verticalHeader().setCascadingSectionResizes(True) # takes space from next row
self.rulesView.selectionModel().currentRowChanged.connect(self._ruleRowChanged)
self.rulesView.verticalHeader().sectionResized[int,int,int].connect(self._ruleRowHeightChanged)
def _drawCondAct(self):
if getattr(self, 'condGB', None):
m_settings.setValue('spl_condAct', self.condActSplit.saveState())
self.condGB.deleteLater() # or .destroy()
del self.condGB
self.actionGB.deleteLater()
del self.actionGB
row = self._ruleCurrRow()
rcount = self.rulesModel.rowCount()
self.condGB = QGroupBox(self.tr('Conditions'))
self.condView = QTableView()
conds = self.rulesModel.ruleConditions(row) if row in range(rcount) \
else []
self.condModel = ConditionsModel(conds, self.rulesModel)
self.condModel.dataChanged.connect(self._codeFragChanged)
self.condView.setModel(self.condModel)
self.condTypeDelegate = ComboBoxDelegate(Condition._types._typeCaptions)
self.condView.setItemDelegateForColumn(0, self.condTypeDelegate)
self.condView.setEditTriggers(QAbstractItemView.AllEditTriggers)
self.condView.setSelectionBehavior(QAbstractItemView.SelectRows)
self.condView.setSelectionMode(QAbstractItemView.SingleSelection)
self.condView.horizontalHeader().setStretchLastSection(True)
self.condView.resizeColumnsToContents()
self.condView.selectionModel().currentRowChanged.connect(self._statusRefresh)
vbox = QVBoxLayout()
vbox.addWidget(self.condView)
self.condGB.setLayout(vbox)
self.condActSplit.addWidget(self.condGB)
self.actionGB = QGroupBox(self.tr('Actions'))
self.actionView = QTableView() # parent = self.actionGB)
actions = self.rulesModel.ruleActions(row) if row in range(rcount) \
else []
self.actionModel = ActionsModel(actions, self.rulesModel)
self.actionModel.dataChanged.connect(self._codeFragChanged)
self.actionView.setModel(self.actionModel)
self.actionTypeDelegate = ComboBoxDelegate(Action._types._typeCaptions)
self.actionView.setItemDelegateForColumn(0, self.actionTypeDelegate)
self.actionView.setEditTriggers(QAbstractItemView.AllEditTriggers)
self.actionView.setSelectionBehavior(QAbstractItemView.SelectRows)
self.actionView.setSelectionMode(QAbstractItemView.SingleSelection)
self.actionView.horizontalHeader().setStretchLastSection(True)
self.actionView.resizeColumnsToContents()
self.actionView.selectionModel().currentRowChanged.connect(self._statusRefresh)
vbox = QVBoxLayout()
vbox.addWidget(self.actionView)
self.actionGB.setLayout(vbox)
self.condActSplit.addWidget(self.actionGB)
self.condActSplit.restoreState(m_settings.value('spl_condAct').toByteArray())
def _drawButton(self, vbox, caption, slot, ena = False):
but = QPushButton(self.tr(caption))
but.setEnabled(ena)
but.clicked.connect(getattr(self, slot))
vbox.addWidget(but) # add to VBoxLayout
return but
def _drawButtons(self, logoFnam):
gbox = QGroupBox()
spol = QSizePolicy()
spol.horizontalPolicy = QSizePolicy.Maximum
gbox.setSizePolicy(spol)
vbox = QVBoxLayout()
if os.path.isfile(logoFnam):
img = QPixmap(logoFnam) #.scaled(64, 64)
lblLogo = QLabel()
lblLogo.setPixmap(img)
lblLogo.setAlignment(Qt.AlignTop | Qt.AlignRight)
vbox.addWidget(lblLogo)
#vbox.addSpacing(3)
self.butSave = self._drawButton(vbox, "M&odify", 'closeSave')
font = QFont()
font.setBold(True)
self.butSave.setFont(font)
self.butCancel = self._drawButton(vbox, "Cancel", 'closeCancel', True)
vbox.addSpacing(36)
self.butAddRule = self._drawButton(vbox, "Add Rule", 'addRule', True)
self.butCopyRule = self._drawButton(vbox, "Copy Rule", 'copyRule')
self.butDelRule = self._drawButton(vbox, "Delete Rule", 'delRule')
self.butMoveRuleUp = self._drawButton(vbox, "Move Rule Up", 'moveRuleUp')
self.butMoveRuleDn = self._drawButton(vbox, "Move Rule Down", 'moveRuleDown')
vbox.addSpacing(24)
self.butAddCond = self._drawButton(vbox, "Add Condition", 'addCond')
self.butDelCond = self._drawButton(vbox, "Delete Condition", 'delCond')
vbox.addSpacing(15)
self.butAddAction = self._drawButton(vbox, "Add Action", 'addAction')
self.butDelAction = self._drawButton(vbox, "Delete Action", 'delAction')
gbox.setLayout(vbox)
self.mainHSplit.addWidget(gbox)
"""
Internal Bindings Signal Receivers
"""
# main win close events
# .. (cancel closing with event.ignore(); QMainWindow calls event.accept())
@pyqtSlot(QCloseEvent)
def closeEvent(self, event):
self._saveAppState()
# save rules if not empty and user clicked Modified/Save button
if self.rulesModel.rowCount() > 0 and not self.cancelled:
text = self.rulesModel.getRawRules().validate()
if text:
self.cancelled = True
QMessageBox.information(self, APP_TITLE,
self.tr("Validation failed because of:<p><p>") + text)
event.ignore()
return # RETURN - cancel app closing ######
self.rulesModel.saveScript()
# accept window closing
QMainWindow.closeEvent(self, event)
# quit application
m_app.quit()
@pyqtSlot()
def _statusRefresh(self): # dis/enable buttons, display view selections
ruleRow = self._ruleCurrRow()
condRow = self._condCurrRow()
actionRow = self._actionCurrRow()
self.butSave.setEnabled(self.rulesModel.isModified())
ruleCnt = self.rulesModel.rowCount()
self.butCopyRule.setEnabled(ruleRow >= 0)
self.butDelRule.setEnabled(ruleRow >= 0)
self.butMoveRuleUp.setEnabled(ruleRow > 0)
self.butMoveRuleDn.setEnabled(ruleRow >= 0 and ruleRow + 1 < ruleCnt)
self.butAddCond.setEnabled(ruleRow >= 0)
self.butDelCond.setEnabled(condRow >= 0)
self.butAddAction.setEnabled(ruleRow >= 0)
self.butDelAction.setEnabled(actionRow >= 0)
# display currently selected list rows in the status bar - if empty
if ruleRow >= 0 and False: # replace False with ~self.statusBar().isEmpty()?!?!?
text = str(self.tr("Selected Rule: {ruleI}"))\
.format(ruleI = ruleRow + 1)
if condRow >= 0:
text += " " \
+ str(self.tr("Selected Condition: {typeI}"))\
.format(typeI = condRow + 1)
if actionRow >= 0:
text += " " \
+ str(self.tr("Selected Action: {typeI}"))\
.format(typeI = actionRow + 1)
self.statusBar().showMessage(text, 3000)
@pyqtSlot(int,int,int)
def _ruleRowHeightChanged(self, section, oldsize, newsize):
hdr = self.rulesView.verticalHeader()
for row in range(hdr.count()):
if row != section:
hdr.resizeSection(row, newsize)
@pyqtSlot()
def _ruleRowChanged(self):
self._drawCondAct()
self._statusRefresh()
@pyqtSlot()
def _codeFragChanged(self): # refresh the rules list columns Conditions and Actions
row = self._ruleCurrRow()
leftColIndex = self.rulesModel.index(row, 2, QModelIndex())
rightColIndex = self.rulesModel.index(row, 3, QModelIndex())
self.rulesView.dataChanged(leftColIndex, rightColIndex)
self._statusRefresh()
"""
User Action Signal Receivers
"""
@pyqtSlot()
def closeSave(self):
self.cancelled = False
self.close()
@pyqtSlot()
def closeCancel(self):
self.cancelled = True
self.close()
@pyqtSlot()
def addRule(self):
row = self._ruleCurrRow()
self.rulesModel.insertRow(row)
self.rulesView.selectRow(row)
self._statusRefresh()
@pyqtSlot()
def copyRule(self):
row = self._ruleCurrRow()
self.rulesModel.setSourceRowForNextAdd(row)
self.rulesModel.insertRow(row)
self.rulesView.selectRow(row)
self._statusRefresh()
@pyqtSlot()
def delRule(self):
self.rulesModel.removeRow(self._ruleCurrRow())
self._statusRefresh()
@pyqtSlot()
def moveRuleUp(self):
row = self._ruleCurrRow()
self.rulesModel.moveRule(row, -1)
self._statusRefresh()
@pyqtSlot()
def moveRuleDown(self):
row = self._ruleCurrRow()
self.rulesModel.moveRule(row)
self._statusRefresh()
@pyqtSlot()
def addCond(self):
cnt = self.condModel.rowCount()
self.condModel.insertRow(cnt)
self.condView.selectRow(cnt)
self._statusRefresh()
@pyqtSlot()
def delCond(self):
self.condModel.removeRow(self._condCurrRow())
self._statusRefresh()
@pyqtSlot()
def addAction(self):
cnt = self.actionModel.rowCount()
self.actionModel.insertRow(cnt)
self.actionView.selectRow(cnt)
self._statusRefresh()
@pyqtSlot()
def delAction(self):
self.actionModel.removeRow(self._actionCurrRow())
self._statusRefresh()
"""
Helping Methods
"""
def _ruleCurrRow(self):
#idxs = self.rulesView.selectedIndexes()
#return idxs[0].row() if idxs else -1
return self.rulesView.currentIndex().row()
def _condCurrRow(self):
return self.condView.currentIndex().row()
def _actionCurrRow(self):
return self.actionView.currentIndex().row()
# main win save/restore
def _saveAppState(self):
m_app.processEvents()
# save win geometry and splitter positions
_UI_SAVE(self, 'win_geometry')
_UI_SAVE(self.mainHSplit, 'spl_mainH')
_UI_SAVE(self.mainVSplit, 'spl_mainV')
_UI_SAVE(self.condActSplit, 'spl_condAct')
#_UI_SAVE(self.condView.horizontalHeader(), 'tvh_condHdr')
def _restoreAppState(self):
try: # will fail on first app startup after installation
# restore last win position, -size and 3 splitter positions
_UI_RESTORE(self, 'win_geometry')
_UI_RESTORE(self.mainHSplit, 'spl_mainH')
_UI_RESTORE(self.mainVSplit, 'spl_mainV')
_UI_RESTORE(self.condActSplit, 'spl_condAct')
#_UI_RESTORE(self.condView.horizontalHeader(), 'tvh_condHdr')
except: # first start
screenWidth = QApplication.desktop().width()
screenHeight = QApplication.desktop().height()
self.setGeometry(screenWidth / 9, screenHeight / 12,
screenWidth / 1.26, screenHeight / 1.56)