Merge pull request #301 from mkcor/config-reveal-resources

Passing custom resources to voila configuration

voila/configuration.py

@@ -7,7 +7,7 @@
 #############################################################################
 
 import traitlets.config
-from traitlets import Unicode, Bool
+from traitlets import Unicode, Bool, Dict
 
 
 class VoilaConfiguration(traitlets.config.Configurable):
@@ -20,6 +20,14 @@ class VoilaConfiguration(traitlets.config.Configurable):
             'template name to be used by voila.'
         )
     )
+    resources = Dict(
+        allow_none=True,
+        help="""
+        extra resources used by templates;
+        example use with --template=reveal
+        --resources="{'reveal': {'transition': 'fade', 'scroll': True}}"
+        """
+    ).tag(config=True)
     theme = Unicode('light').tag(config=True)
     strip_sources = Bool(True, help='Strip sources from rendered html').tag(config=True)
     enable_nbextensions = Bool(False, config=True, help=('Set to True for Voila to load notebook extensions'))

voila/handler.py

@@ -11,6 +11,7 @@
 import tornado.web
 
 from jupyter_server.base.handlers import JupyterHandler
+from jupyter_server.config_manager import recursive_update
 
 from .execute import executenb
 from .exporter import VoilaExporter
@@ -67,6 +68,11 @@ def get(self, path=None):
             'theme': self.voila_configuration.theme
         }
 
+        # include potential extra resources
+        extra_resources = self.voila_configuration.resources
+        if extra_resources:
+            recursive_update(resources, extra_resources)
+
         exporter = VoilaExporter(
             template_path=self.nbconvert_template_paths,
             config=self.exporter_config,