Source code for bokeh.models.callbacks

#-----------------------------------------------------------------------------
# Copyright (c) 2012 - 2021, Anaconda, Inc., and Bokeh Contributors.
# All rights reserved.
#
# The full license is in the file LICENSE.txt, distributed with this software.
#-----------------------------------------------------------------------------

''' Client-side interactivity.

'''

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

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

# Bokeh imports
from ..core.has_props import abstract
from ..core.properties import AnyRef, Bool, Dict, String
from ..model import Model

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

__all__ = (
    'Callback',
    'OpenURL',
    'CustomJS',
)

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

@abstract
class Callback(Model):
    ''' Base class for interactive callback.

    '''


class OpenURL(Callback):
    ''' Open a URL in a new or current tab or window.

    '''

    url = String("http://", help="""
    The URL to direct the web browser to. This can be a template string,
    which will be formatted with data from the data source.
    """)
    same_tab = Bool(False, help="""
    Open URL in a new (`False`, default) or current (`True`) tab or window.
    For `same_tab=False`, whether tab or window will be opened is browser
    dependent.
    """)


class CustomJS(Callback):
    ''' Execute a JavaScript function.

    .. warning::
        The explicit purpose of this Bokeh Model is to embed *raw JavaScript
        code* for a browser to execute. If any part of the code is derived
        from untrusted user inputs, then you must take appropriate care to
        sanitize the user input prior to passing to Bokeh.

    '''

    args = Dict(String, AnyRef, help="""
    A mapping of names to Python objects. In particular those can be bokeh's models.
    These objects are made available to the callback's code snippet as the values of
    named parameters to the callback.
    """)

    code = String(default="", help="""
    A snippet of JavaScript code to execute in the browser. The
    code is made into the body of a function, and all of of the named objects in
    ``args`` are available as parameters that the code can use. Additionally,
    a ``cb_obj`` parameter contains the object that triggered the callback
    and an optional ``cb_data`` parameter that contains any tool-specific data
    (i.e. mouse coordinates and hovered glyph indices for the ``HoverTool``).
    """)

#-----------------------------------------------------------------------------
# Dev API
#-----------------------------------------------------------------------------

#-----------------------------------------------------------------------------
# Private API
#-----------------------------------------------------------------------------

#-----------------------------------------------------------------------------
# Code
#-----------------------------------------------------------------------------