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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`. r r ��documentr c C s dS )z� Validate the input. If invalid, this should raise a :class:`.ValidationError`. :param document: :class:`~prompt_toolkit.document.Document` instance. Nr �r r+ r r r �validate8 s zValidator.validatec � s( z| � |� W n ty" � Y n0 dS )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 r, r r r �validate_asyncB s zValidator.validate_async� Invalid inputF�Callable[[str], bool]r �bool)� validate_func� error_message�move_cursor_to_endr c C s 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)�clsr2 r3 r4 r r r � from_callableM s zValidator.from_callableN)r/ F) r# r& r' r( r r- r. � classmethodr7 r r r r r + s �r )� metaclassc @ sB e Zd ZdZddddd�dd�Zdd �d d �Zd dd �dd�ZdS )r5 z0 Validate input from a simple callable. r0 r r1 r )�funcr3 r4 r c C s || _ || _|| _d S r )r: r3 r4 )r r: r3 r4 r r r r k s z _ValidatorFromCallable.__init__r! c C s d| j �d�S )NzValidator.from_callable(r" )r: r$ r r r r% r s z _ValidatorFromCallable.__repr__r r* c C s4 | � |j�s0| jr t|j�}nd}t|| jd��d S )Nr )r r )r: �textr4 �lenr r3 )r r+ �indexr r r r- u s z _ValidatorFromCallable.validateN)r# r& r' r( r r% r- r r r r r5 f s r5 c @ s@ e Zd ZdZddd�dd�Zddd�d d �Zddd�d d �Zd S )r z� 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.) r r )� validatorr c C s || _ d S r )r> )r r> r r r r � s zThreadedValidator.__init__r r* c C s | j �|� d S r )r> r- r, r r r r- � s zThreadedValidator.validatec � s& dd�� �fdd� }t |�I dH dS )z: Run the `validate` function in a thread. r r! c s �� � �S r )r- r �r+ r r r �run_validation_thread� s z?ThreadedValidator.validate_async.<locals>.run_validation_threadNr )r r+ r@ r r? r r. � s z ThreadedValidator.validate_asyncN�r# r& r' r( r r- r. r r r r r s r c @ s e Zd ZdZddd�dd�ZdS )r z1 Validator class that accepts any input. r r r* c C s d S r r r, r r r r- � s zDummyValidator.validateN)r# r& r' r( r- r r r r r � s r c @ s2 e Zd ZdZdddd�dd�Zddd �d d �Zd S ) r zq Validator that can be switched on/off according to a filter. (This wraps around another validator.) r r r )r> �filterr c C s || _ t|�| _d S r )r> r rB )r r> rB r r r r � s z ConditionalValidator.__init__r r* c C s | � � r| j�|� d S r )rB r> r- r, r r r r- � s z ConditionalValidator.validateN)r# r& r' r( r r- r r r r r � s r c @ s@ e Zd ZdZddd�dd�Zddd�d d �Zddd�d d �Zd S )r z� Validator class that can dynamically returns any Validator. :param get_validator: Callable that returns a :class:`.Validator` instance. z Callable[[], Validator | None]r )� get_validatorr c C s || _ d S r )rC )r rC r r r r � s zDynamicValidator.__init__r r* c C s | � � p t� }|�|� d S r )rC r r- �r r+ r> r r r r- � s zDynamicValidator.validatec � s" | � � p t� }|�|�I d H d S r )rC r r. rD r r r r. � s z DynamicValidator.validate_asyncNrA r r r r r � s r N)r( � __future__r �abcr r �typingr Zprompt_toolkit.eventloopr r+ r �filtersr r �__all__� Exceptionr r r5 r r r r r r r r �<module> s ;
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