docs: def eventFilter(self, object, event):
          """
          Filters events for the popup tree widget.
          
          :param      object | <QObject>
                      event  | <QEvent>
          
          :retuen     <bool> | consumed
          """
          try:
              is_lineedit = object == self.lineEdit()
          except RuntimeError:
              is_lineedit = False
          
          try:
              is_nav = object == self._navigator
          except RuntimeError:
              is_nav = False
          
          if not (is_nav or is_lineedit):
              return super(XOrbColumnNavigatorBox, self).eventFilter(object, event)
          
          if event.type() == event.KeyPress:
              # accept lookup
              if event.key() in (Qt.Key_Enter, Qt.Key_Return, Qt.Key_Tab):
                  self.acceptColumn()
                  event.accept()
                  return True
                  
              # cancel lookup
              elif event.key() == Qt.Key_Escape:
                  self.hidePopup()
                  event.accept()
                  return True
              
              # update the search info
              else:
                  self.lineEdit().keyPressEvent(event)
                  event.accept()
                  return True
          
          elif is_nav and event.type() == event.Show:
              object.resizeToContents()
              object.horizontalScrollBar().setValue(0)
              
          elif event.type() == event.KeyRelease:
              self.lineEdit().keyReleaseEvent(event)
              self.navigator().blockSignals(True)
              self.navigator().setCurrentSchemaPath(self.lineEdit().text())
              self.navigator().blockSignals(False)
              event.accept()
              return True
          
          elif event.type() == event.MouseButtonPress:
              local_pos = object.mapFromGlobal(event.globalPos())
              in_widget = object.rect().contains(local_pos)
              
              if not in_widget:
                  self.hidePopup()
                  event.accept()
                  return True
              
          return super(XOrbColumnNavigatorBox, self).eventFilter(object, event)