B 't\@sdZddlmZddlmZddlmZmZddlm Z m Z ddl m Z m Z dd d d d d gZGdd d eZGdd d e e eZGdddeZGdd d eZGdd d eZGdddeZGdd d eZdS)zV Input validation for a `Buffer`. (Validators will be called before accepting input.) )unicode_literals) to_filter)Futurerun_in_executor)ABCMetaabstractmethod)with_metaclass text_typeConditionalValidatorValidationError ValidatorThreadedValidatorDummyValidatorDynamicValidatorcs*eZdZdZdfdd ZddZZS) r z Error raised by :meth:`.Validator.validate`. :param cursor_position: The cursor position where the error occurred. :param message: Text. rcs tt||||_||_dS)N)superr __init__cursor_positionmessage)selfrr) __class__8lib/python3.7/site-packages/prompt_toolkit/validation.pyrszValidationError.__init__cCsd|jj|j|jfS)Nz"%s(cursor_position=%r, message=%r))r__name__rr)rrrr__repr__"szValidationError.__repr__)rr)r __module__ __qualname____doc__rr __classcell__rr)rrr sc@s2eZdZdZeddZddZed dd Zd S) r a Abstract base class for an input validator. A validator is typically created in one of the following two ways: - Either by overriding this class and implementing the `validate` method. - Or by passing a callable to `Validator.from_callable`. If the validation takes some time and needs to happen in a background thread, this can be wrapped in a :class:`.ThreadedValidator`. cCsdS)z Validate the input. If invalid, this should raise a :class:`.ValidationError`. :param document: :class:`~prompt_toolkit.document.Document` instance. Nr)rdocumentrrrvalidate3szValidator.validatec CsFy||Wn(tk r6}z t|Sd}~XYn XtdSdS)z Return a `Future` which is set when the validation is ready. This function can be overloaded in order to provide an asynchronous implementation. N)r!r rZfailZsucceed)rr errrget_validate_future=s zValidator.get_validate_future Invalid inputFcCs t|||S)aF Create a validator from a simple validate callable. E.g.: .. code:: python def is_valid(text): return text in ['hello', 'world'] Validator.from_callable(is_valid, error_message='Invalid input') :param validate_func: Callable that takes the input string, and returns `True` if the input is valid input. :param error_message: Message to be displayed if the input is invalid. :param move_cursor_to_end: Move the cursor to the end of the input, if the input is invalid. )_ValidatorFromCallable)clsZ validate_func error_messagemove_cursor_to_endrrr from_callableJszValidator.from_callableN)r$F) rrrrrr!r# classmethodr)rrrrr 's    c@s(eZdZdZddZddZddZdS) r%z0 Validate input from a simple callable. cCs0t|s tt|tst||_||_||_dS)N)callableAssertionError isinstancer funcr'r()rr.r'r(rrrrds  z_ValidatorFromCallable.__init__cCs d|jfS)NzValidator.from_callable(%r))r.)rrrrrlsz_ValidatorFromCallable.__repr__cCs4||js0|jrt|j}nd}t||jddS)Nr)rr)r.textr(lenr r')rr indexrrrr!os   z_ValidatorFromCallable.validateN)rrrrrrr!rrrrr%`sr%c@s(eZdZdZddZddZddZdS) rz Wrapper that runs input validation in a thread. (Use this to prevent the user interface from becoming unresponsive if the input validation takes too much time.) cCst|tst||_dS)N)r-r r, validator)rr2rrrrszThreadedValidator.__init__cCs |j|S)N)r2r!)rr rrrr!szThreadedValidator.validatecsfdd}t|}|S)z: Run the `validate` function in a thread. cs S)N)r!r)r rrrrun_validation_threadszDThreadedValidator.get_validate_future..run_validation_thread)r)rr r3fr)r rrr#sz%ThreadedValidator.get_validate_futureN)rrrrrr!r#rrrrrzsc@seZdZdZddZdS)rz1 Validator class that accepts any input. cCsdS)Nr)rr rrrr!szDummyValidator.validateN)rrrrr!rrrrrsc@s eZdZdZddZddZdS)r zq Validator that can be switched on/off according to a filter. (This wraps around another validator.) cCs"t|tst||_t||_dS)N)r-r r,r2rfilter)rr2r5rrrrszConditionalValidator.__init__cCs|r|j|dS)N)r5r2r!)rr rrrr!szConditionalValidator.validateN)rrrrrr!rrrrr sc@s(eZdZdZddZddZddZdS) rz Validator class that can dynamically returns any Validator. :param get_validator: Callable that returns a :class:`.Validator` instance. cCst|s t||_dS)N)r+r, get_validator)rr6rrrrs zDynamicValidator.__init__cCs&|p t}t|tst||S)N)r6rr-r r,r!)rr r2rrrr!szDynamicValidator.validatecCs&|p t}t|tst||S)N)r6rr-r r,r#)rr r2rrrr#sz$DynamicValidator.get_validate_futureN)rrrrrr!r#rrrrrsN)rZ __future__rfiltersrZ eventlooprrabcrrZsixr r __all__ Exceptionr objectr r%rrr rrrrrs$  9