def keyPressEvent(self, key_event: QKeyEvent) -> None:
if self.completer and self.completer.popup().isVisible():
# The following keys are forwarded by the completer to the widget
key = key_event.key()
if key in (Qt.Key_Enter, Qt.Key_Return, Qt.Key_Escape, Qt.Key_Tab,
Qt.Key_Backtab):
key_event.ignore()
return # let the completer do default behavior
is_ctrl_modifier = (key_event.modifiers() & Qt.ControlModifier) != 0
is_shift_modifier = (key_event.modifiers() & Qt.ShiftModifier) != 0
ctrl_or_shift = is_ctrl_modifier or is_shift_modifier
is_shortcut = is_ctrl_modifier and key_event.key(
) == Qt.Key_E # CTRL+E
if not self.completer or not is_shortcut: # do not process the shortcut when we have a completer
QLineEdit.keyPressEvent(self, key_event)
if not self.completer or ctrl_or_shift and key_event.text() == '':
return
eow = "~!@#$%^&*()_+{}|:\"<>?,./;'[]\\-=" # end of word
has_modifier = (key_event.modifiers() !=
Qt.NoModifier) and not ctrl_or_shift
completion_prefix = self.text_under_cursor()
if not is_shortcut:
event_text = key_event.text()
if has_modifier or not event_text or len(
completion_prefix) < 1 or event_text[-1] in eow:
self.completer.popup().hide()
return
if completion_prefix != self.completer.completionPrefix():
self.completer.setCompletionPrefix(completion_prefix)
self.completer.popup().setCurrentIndex(
self.completer.completionModel().index(0, 0))
cr = self.cursorRect()
cr.setWidth(
self.completer.popup().sizeHintForColumn(0) +
self.completer.popup().verticalScrollBar().sizeHint().width())
self.completer.complete(cr) # popup it up!
def keyPressEvent(self, event):
QLineEdit.keyPressEvent(self, event);
if (event.key() == Qt.Key_Return):
self.focusOutEvent(QFocusEvent( QEvent.FocusOut, Qt.MouseFocusReason))
