Source code for highcharts_gantt.global_options.shared_options

from typing import Optional

import esprima
from esprima.error_handler import Error as ParseError

from highcharts_gantt.options import HighchartsGanttOptions

from highcharts_gantt import errors
from highcharts_gantt.decorators import validate_types
from highcharts_stock.global_options.shared_options import SharedOptions, SharedStockOptions


[docs]class SharedGanttOptions(HighchartsGanttOptions): """Python object which can be used to configure global settings that can apply to multiple Highcharts charts when serialized to JavaScript."""
[docs] def to_js_literal(self, filename = None, encoding = 'utf-8', careful_validation = False) -> Optional[str]: """Return the object represented as a :class:`str <python:str>` containing the JavaScript object literal. :param filename: The name of a file to which the JavaScript object literal should be persisted. Defaults to :obj:`None <python:None>` :type filename: Path-like :param encoding: The character encoding to apply to the resulting object. Defaults to ``'utf-8'``. :type encoding: :class:`str <python:str>` :param careful_validation: if ``True``, will carefully validate JavaScript values along the way using the `esprima-python <https://github.com/Kronuz/esprima-python>`__ library. Defaults to ``False``. .. warning:: Setting this value to ``True`` will significantly degrade serialization performance, though it may prove useful for debugging purposes. :type careful_validation: :class:`bool <python:bool>` .. note:: Returns a JavaScript string which applies the Highcharts global options. The JavaScript returned by this method takes the (pseudo-code) form: .. code-block:: javascript Highcharts.setOptions({... configuration options ... }); :rtype: :class:`str <python:str>` """ prefix = 'Highcharts.setOptions(' options_body = super().to_js_literal(encoding = encoding, careful_validation = careful_validation) as_str = prefix + options_body + ');' if filename: with open(filename, 'w', encoding = encoding) as file_: file_.write(as_str) return as_str
@classmethod def _validate_js_literal(cls, as_str, range = True, _break_loop_on_failure = False): """Parse ``as_str`` as a valid JavaScript literal object. :param as_str: The string to parse as a JavaScript literal object. :type as_str: :class:`str <python:str>` :param range: If ``True``, includes location and range data for each node in the AST returned. Defaults to ``False``. :type range: :class:`bool <python:bool>` :param _break_loop_on_failure: If ``True``, will not loop if the method fails to parse/validate ``as_str``. Defaults to ``False``. :type _break_loop_on_failure: :class:`bool <python:bool>` :returns: The parsed AST representation of ``as_str`` and the updated string. :rtype: 2-member :class:`tuple <python:tuple>` of :class:`esprima.nodes.Script` and :class:`str <python:str>` """ try: parsed = esprima.parseScript(as_str, loc = range, range = range) except ParseError: try: parsed = esprima.parseModule(as_str, loc = range, range = range) except ParseError: if not _break_loop_on_failure: as_str = f"""var randomVariable = {as_str}""" return cls._validate_js_literal(as_str, range = range, _break_loop_on_failure = True) else: raise errors.HighchartsParseError('._validate_js_function() expects ' 'a str containing a valid ' 'JavaScript function. Could not ' 'find a valid function.') return parsed, as_str
[docs] @classmethod def from_options(cls, options): """Create a :class:`SharedGanttOptions <highcharts_gantt.global_options.shared_options.SharedGanttOptions>` instance from a :class:`HighchartsGanttOptions <highcharts_gantt.options.HighchartsGanttOptions>` object. :param options: A :class:`HighchartsGanttOptions` object to use for the shared options instance. :type options: :class:`HighchartsGanttOptions <highcharts_gantt.options.HighchartsGanttOptions>` or coercable :returns: A :class:`SharedGanttOptions <highcharts_gantt.global_options.shared_options.SharedGanttOptions>` instance :rtype: :class:`SharedGanttOptions <highcharts_gantt.global_options.shared_options.SharedGanttOptions>` """ if not options: return cls() options = validate_types(options, types = (HighchartsGanttOptions)) options_as_dict = options.to_dict() instance = cls.from_dict(options_as_dict) return instance