Source code for bokeh.server.views.autoload_js_handler

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# Copyright (c) 2012 - 2019, Anaconda, Inc., and Bokeh Contributors.
# All rights reserved.
#
# The full license is in the file LICENSE.txt, distributed with this software.
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''' Provide a request handler that returns a page displaying a document.

'''

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# Boilerplate
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from __future__ import absolute_import, division, print_function, unicode_literals

import logging
log = logging.getLogger(__name__)

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# Imports
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# Standard library imports

# External imports
from six.moves.urllib.parse import urlparse
from tornado import gen

# Bokeh imports
from bokeh.core.templates import AUTOLOAD_JS
from bokeh.util.string import encode_utf8
from bokeh.embed.bundle import bundle_for_objs_and_resources, Script
from bokeh.embed.elements import script_for_render_items
from bokeh.embed.util import RenderItem

from .session_handler import SessionHandler

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# Globals and constants
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__all__ = (
    'AutoloadJsHandler',
)

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# General API
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# Dev API
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[docs]class AutoloadJsHandler(SessionHandler): ''' Implements a custom Tornado handler for the autoload JS chunk ''' @gen.coroutine def get(self, *args, **kwargs): session = yield self.get_session() element_id = self.get_argument("bokeh-autoload-element", default=None) if not element_id: self.send_error(status_code=400, reason='No bokeh-autoload-element query parameter') return app_path = self.get_argument("bokeh-app-path", default="/") absolute_url = self.get_argument("bokeh-absolute-url", default=None) if absolute_url: server_url = '{uri.scheme}://{uri.netloc}'.format(uri=urlparse(absolute_url)) else: server_url = None resources_param = self.get_argument("resources", "default") resources = self.application.resources(server_url) if resources_param != "none" else None bundle = bundle_for_objs_and_resources(None, resources) render_items = [RenderItem(sessionid=session.id, elementid=element_id, use_for_title=False)] bundle.add(Script(script_for_render_items(None, render_items, app_path=app_path, absolute_url=absolute_url))) js = AUTOLOAD_JS.render(bundle=bundle, elementid=element_id) self.set_header("Content-Type", 'application/javascript') self.write(encode_utf8(js))
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