From 142ae515bce8cb9433caca2d80b1070bb62128d7 Mon Sep 17 00:00:00 2001
From: "Brian E. Granger" <ellisonbg@gmail.com>
Date: Wed, 16 Dec 2015 22:32:05 -0800
Subject: [PATCH] Adding prototype nbextensions argument to NotebookApp

---
 notebook/base/handlers.py        | 4 ++++
 notebook/notebook/handlers.py    | 3 +++
 notebook/notebookapp.py          | 5 +++++
 notebook/templates/notebook.html | 2 +-
 4 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/notebook/base/handlers.py b/notebook/base/handlers.py
index 39c705627..cea25f5f9 100644
--- a/notebook/base/handlers.py
+++ b/notebook/base/handlers.py
@@ -292,6 +292,10 @@ class IPythonHandler(AuthenticatedHandler):
     # template rendering
     #---------------------------------------------------------------
     
+    @property
+    def nbextensions(self):
+        return self.settings.get('nbextensions', [])
+    
     def get_template(self, name):
         """Return the jinja template object for a given name"""
         return self.settings['jinja2_env'].get_template(name)
diff --git a/notebook/notebook/handlers.py b/notebook/notebook/handlers.py
index 72bbd5a82..ab1b068ad 100644
--- a/notebook/notebook/handlers.py
+++ b/notebook/notebook/handlers.py
@@ -4,6 +4,7 @@
 # Distributed under the terms of the Modified BSD License.
 
 import os
+import json
 from tornado import web
 HTTPError = web.HTTPError
 
@@ -21,6 +22,7 @@ class NotebookHandler(IPythonHandler):
         redirects to the '/files/' handler if the name is not given."""
         path = path.strip('/')
         cm = self.contents_manager
+        nbextensions = json.dumps(self.nbextensions)
         
         # will raise 404 on not found
         try:
@@ -40,6 +42,7 @@ class NotebookHandler(IPythonHandler):
             notebook_name=name,
             kill_kernel=False,
             mathjax_url=self.mathjax_url,
+            nbextensions=nbextensions
             )
         )
 
diff --git a/notebook/notebookapp.py b/notebook/notebookapp.py
index ddca04e36..c4aca44be 100644
--- a/notebook/notebookapp.py
+++ b/notebook/notebookapp.py
@@ -219,6 +219,8 @@ class NotebookWebApplication(web.Application):
             iopub_data_rate_limit=ipython_app.iopub_data_rate_limit,
             rate_limit_window=ipython_app.rate_limit_window,
 
+            nbextensions=ipython_app.nbextensions,
+            
             # authentication
             cookie_secret=ipython_app.cookie_secret,
             login_url=url_path_join(base_url,'/login'),
@@ -691,6 +693,9 @@ class NotebookApp(JupyterApp):
             path.append(os.path.join(get_ipython_dir(), 'nbextensions'))
         return path
 
+    nbextensions = List(Unicode(), config=True,
+        help="A list of nbextensions to enable.")
+
     websocket_url = Unicode("", config=True,
         help="""The base URL for websockets,
         if it differs from the HTTP server (hint: it almost certainly doesn't).
diff --git a/notebook/templates/notebook.html b/notebook/templates/notebook.html
index 31fd510f6..cbc06fdff 100644
--- a/notebook/templates/notebook.html
+++ b/notebook/templates/notebook.html
@@ -30,7 +30,7 @@ data-base-url="{{base_url | urlencode}}"
 data-ws-url="{{ws_url | urlencode}}"
 data-notebook-name="{{notebook_name | urlencode}}"
 data-notebook-path="{{notebook_path | urlencode}}"
-
+data-nbextensions="{{nbextensions}}"
 {% endblock %}