def keyPressEvent(self, evt):
if evt.key() in (Qt.Key_Up, Qt.Key_Down):
# show completer on arrow key up/down
if not self.completer.popup().isVisible():
self.showCompleter()
return
if (evt.key() == Qt.Key_Tab and evt.modifiers() & Qt.ControlModifier):
# select next completion
if not self.completer.popup().isVisible():
self.showCompleter()
index = self.completer.currentIndex()
self.completer.popup().setCurrentIndex(index)
cur_row = index.row()
if not self.completer.setCurrentRow(cur_row + 1):
self.completer.setCurrentRow(0)
return
if evt.key() in (Qt.Key_Enter, Qt.Key_Return):
# apply first completion if no suggestion selected
selected_row = self.completer.popup().currentIndex().row()
if selected_row == -1:
self.completer.setCurrentRow(0)
index = self.completer.currentIndex()
self.completer.popup().setCurrentIndex(index)
self.hideCompleter()
QWidget.keyPressEvent(self, evt)
return
QLineEdit.keyPressEvent(self, evt)
if not evt.text():
# if it's a modifier, don't show
return
if evt.key() not in (
Qt.Key_Enter, Qt.Key_Return, Qt.Key_Escape, Qt.Key_Space,
Qt.Key_Tab, Qt.Key_Backspace, Qt.Key_Delete):
self.showCompleter()
