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Fix crash in case of empty history

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Without that check, an empty history causes a crash
This commit is contained in:
Salvo 'LtWorf' Tomaselli 2016-01-02 15:59:02 +01:00
parent 8ccf4d51a4
commit 6315bebc61
1 changed files with 2 additions and 0 deletions
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relational_gui/guihandler.py
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@ -88,6 +88,8 @@ class relForm(QtWidgets.QMainWindow):
if self.history_current_line is None: if self.history_current_line is None:
self.history_current_line = self.ui.txtQuery.text() self.history_current_line = self.ui.txtQuery.text()
if self.ui.lstHistory.currentItem() is None:
return
if not self.ui.lstHistory.currentItem().text() != self.ui.txtQuery.text(): if not self.ui.lstHistory.currentItem().text() != self.ui.txtQuery.text():
self.ui.lstHistory.setCurrentRow(self.ui.lstHistory.currentRow()-1) self.ui.lstHistory.setCurrentRow(self.ui.lstHistory.currentRow()-1)
elif self.ui.lstHistory.currentRow() > 0: elif self.ui.lstHistory.currentRow() > 0: