def addError(self, error_type, line, column=1, message=None,
selectLine=True):
assert error_type in self.colors and self.colors[error_type] is not None
selectLine = selectLine or not column
c = cursorForPosition(self.editor.codeEdit, line, column,
selectEndOfLine=selectLine)
deco = TextDecoration(c, draw_order=error_type + 1, tooltip=message)
deco.setSpellchecking(color=QColor(self.colors[error_type]))
self.__decorations.append(deco)
self.editor.codeEdit.addDecoration(deco)
if self.checkers_panel:
self.__markers.append(
self.checkers_panel.addCheckerMarker(error_type, line, message))
