environment/lib/python2.7/site-packages/IPython/frontend/qt/console/completion_html.py
def eventFilter(self, obj, event):
        """ Reimplemented to handle keyboard input and to auto-hide when the
            text edit loses focus.
        """
        if obj == self._text_edit:
            etype = event.type()
            if etype == QtCore.QEvent.KeyPress:
                key = event.key()
                if self._consecutive_tab == 0 and key in (QtCore.Qt.Key_Tab,):
                    return False
                elif self._consecutive_tab == 1 and key in (QtCore.Qt.Key_Tab,):
                    # ok , called twice, we grab focus, and show the cursor
                    self._consecutive_tab = self._consecutive_tab+1
                    self._update_list()
                    return True
                elif self._consecutive_tab == 2:
                    if key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter):
                        self._complete_current()
                        return True
                    if key in (QtCore.Qt.Key_Tab,):
                        self.select_right()
                        self._update_list()
                        return True
                    elif key in ( QtCore.Qt.Key_Down,):
                        self.select_down()
                        self._update_list()
                        return True
                    elif key in (QtCore.Qt.Key_Right,):
                        self.select_right()
                        self._update_list()
                        return True
                    elif key in ( QtCore.Qt.Key_Up,):
                        self.select_up()
                        self._update_list()
                        return True
                    elif key in ( QtCore.Qt.Key_Left,):
                        self.select_left()
                        self._update_list()
                        return True
                    elif key in ( QtCore.Qt.Key_Escape,):
                        self.cancel_completion()
                        return True
                    else :
                        self.cancel_completion()
                else:
                    self.cancel_completion()

            elif etype == QtCore.QEvent.FocusOut:
                self.cancel_completion()

        return super(CompletionHtml, self).eventFilter(obj, event)
def eventFilter(self, obj, event):
        """ Reimplemented to handle keyboard input and to auto-hide when the
            text edit loses focus.
        """
        if obj == self._text_edit:
            etype = event.type()
            if etype == QtCore.QEvent.KeyPress:
                key = event.key()
                if self._consecutive_tab == 0 and key in (QtCore.Qt.Key_Tab,):
                    return False
                elif self._consecutive_tab == 1 and key in (QtCore.Qt.Key_Tab,):
                    # ok , called twice, we grab focus, and show the cursor
                    self._consecutive_tab = self._consecutive_tab+1
                    self._update_list()
                    return True
                elif self._consecutive_tab == 2:
                    if key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter):
                        self._complete_current()
                        return True
                    if key in (QtCore.Qt.Key_Tab,):
                        self.select_right()
                        self._update_list()
                        return True
                    elif key in ( QtCore.Qt.Key_Down,):
                        self.select_down()
                        self._update_list()
                        return True
                    elif key in (QtCore.Qt.Key_Right,):
                        self.select_right()
                        self._update_list()
                        return True
                    elif key in ( QtCore.Qt.Key_Up,):
                        self.select_up()
                        self._update_list()
                        return True
                    elif key in ( QtCore.Qt.Key_Left,):
                        self.select_left()
                        self._update_list()
                        return True
                    elif key in ( QtCore.Qt.Key_Escape,):
                        self.cancel_completion()
                        return True
                    else :
                        self.cancel_completion()
                else:
                    self.cancel_completion()

            elif etype == QtCore.QEvent.FocusOut:
                self.cancel_completion()

        return super(CompletionHtml, self).eventFilter(obj, event)
Reimplemented to handle keyboard input and to auto-hide when the
            text edit loses focus.