#----------------------------------------------------------------------------- # 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. #----------------------------------------------------------------------------- ''' Provide a request handler that returns a page displaying a document. ''' #----------------------------------------------------------------------------- # Boilerplate #----------------------------------------------------------------------------- from __future__ import absolute_import, division, print_function, unicode_literals import logging log = logging.getLogger(__name__) #----------------------------------------------------------------------------- # Imports #----------------------------------------------------------------------------- # 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 #----------------------------------------------------------------------------- # Globals and constants #----------------------------------------------------------------------------- __all__ = ( 'AutoloadJsHandler', ) #----------------------------------------------------------------------------- # General API #----------------------------------------------------------------------------- #----------------------------------------------------------------------------- # Dev API #----------------------------------------------------------------------------- [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)) #----------------------------------------------------------------------------- # Private API #----------------------------------------------------------------------------- #----------------------------------------------------------------------------- # Code #-----------------------------------------------------------------------------