Source code for bokeh.core.property.primitive

#-----------------------------------------------------------------------------
# Copyright (c) 2012 - 2022, Anaconda, Inc., and Bokeh Contributors.
# All rights reserved.
#
# The full license is in the file LICENSE.txt, distributed with this software.
#-----------------------------------------------------------------------------
""" Provide properties for Python primitive types.

"""

#-----------------------------------------------------------------------------
# Boilerplate
#-----------------------------------------------------------------------------
from __future__ import annotations

import logging # isort:skip
log = logging.getLogger(__name__)

#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------

# Standard library imports
import numbers

# External imports
import numpy as np

# Bokeh imports
from ._sphinx import property_link, register_type_link
from .bases import Init, PrimitiveProperty

#-----------------------------------------------------------------------------
# Globals and constants
#-----------------------------------------------------------------------------

bokeh_bool_types = (bool, np.bool8)
bokeh_integer_types = (numbers.Integral,)

__all__ = (
    'Bool',
    'Bytes',
    'Complex',
    'Int',
    'Float',
    'Null',
    'String',
)

#-----------------------------------------------------------------------------
# General API
#-----------------------------------------------------------------------------

[docs]class Null(PrimitiveProperty[None]): """ Accept only ``None`` value. Use this in conjunction with ``Either(Null, Type)`` or as ``Nullable(Type)``. """ _underlying_type = (type(None),) def __init__(self, default: Init[None] = None, *, help: str | None = None) -> None: super().__init__(default=default, help=help)
[docs]class Bool(PrimitiveProperty[bool]): """ Accept boolean values. Args: default (obj, optional) : A default value for attributes created from this property to have. help (str or None, optional) : A documentation string for this property. It will be automatically used by the :ref:`bokeh.sphinxext.bokeh_prop` extension when generating Spinx documentation. (default: None) Example: .. code-block:: python >>> class BoolModel(HasProps): ... prop = Bool(default=False) ... >>> m = BoolModel() >>> m.prop = True >>> m.prop = False >>> m.prop = 10 # ValueError !! """ _underlying_type = bokeh_bool_types def __init__(self, default: Init[bool] = False, *, help: str | None = None) -> None: super().__init__(default=default, help=help)
[docs]class Complex(PrimitiveProperty[complex]): """ Accept complex floating point values. Args: default (complex, optional) : A default value for attributes created from this property to have. help (str or None, optional) : A documentation string for this property. It will be automatically used by the :ref:`bokeh.sphinxext.bokeh_prop` extension when generating Spinx documentation. (default: None) """ _underlying_type = (numbers.Complex,) def __init__(self, default: Init[complex] = 0j, *, help: str | None = None) -> None: super().__init__(default=default, help=help)
[docs]class Int(PrimitiveProperty[int]): """ Accept signed integer values. Args: default (int, optional) : A default value for attributes created from this property to have. help (str or None, optional) : A documentation string for this property. It will be automatically used by the :ref:`bokeh.sphinxext.bokeh_prop` extension when generating Spinx documentation. (default: None) Example: .. code-block:: python >>> class IntModel(HasProps): ... prop = Int() ... >>> m = IntModel() >>> m.prop = 10 >>> m.prop = -200 >>> m.prop = 10.3 # ValueError !! """ _underlying_type = bokeh_integer_types def __init__(self, default: Init[int] = 0, *, help: str | None = None) -> None: super().__init__(default=default, help=help)
[docs]class Float(PrimitiveProperty[float]): """ Accept floating point values. Args: default (float, optional) : A default value for attributes created from this property to have. help (str or None, optional) : A documentation string for this property. It will be automatically used by the :ref:`bokeh.sphinxext.bokeh_prop` extension when generating Spinx documentation. (default: None) Example: .. code-block:: python >>> class FloatModel(HasProps): ... prop = Float() ... >>> m = FloatModel() >>> m.prop = 10 >>> m.prop = 10.3 >>> m.prop = "foo" # ValueError !! """ _underlying_type = (numbers.Real,) def __init__(self, default: Init[float] = 0.0, *, help: str | None = None) -> None: super().__init__(default=default, help=help)
[docs]class Bytes(PrimitiveProperty[bytes]): """ Accept bytes values. """ _underlying_type = (bytes,) def __init__(self, default: Init[bytes] = b"", *, help: str | None = None) -> None: super().__init__(default=default, help=help)
[docs]class String(PrimitiveProperty[str]): """ Accept string values. Args: default (string, optional) : A default value for attributes created from this property to have. help (str or None, optional) : A documentation string for this property. It will be automatically used by the :ref:`bokeh.sphinxext.bokeh_prop` extension when generating Spinx documentation. (default: None) Example: .. code-block:: python >>> class StringModel(HasProps): ... prop = String() ... >>> m = StringModel() >>> m.prop = "foo" >>> m.prop = 10.3 # ValueError !! >>> m.prop = [1, 2, 3] # ValueError !! """ _underlying_type = (str,) def __init__(self, default: Init[str] = "", *, help: str | None = None) -> None: super().__init__(default=default, help=help)
#----------------------------------------------------------------------------- # Dev API #----------------------------------------------------------------------------- #----------------------------------------------------------------------------- # Private API #----------------------------------------------------------------------------- #----------------------------------------------------------------------------- # Code #----------------------------------------------------------------------------- @register_type_link(Null) def _sphinx_type(obj: Null) -> str: return f"{property_link(obj)}"