jupyter · RRosio · Feb 17, 2023 · Feb 2, 2023 · Feb 3, 2023 · Feb 7, 2023
diff --git a/docs/source/nbclassic.rst b/docs/source/nbclassic.rst
@@ -20,6 +20,9 @@ way to continue using the Jupyter Notebook 6 tech-stack as they
 transition to using the Jupyter Notebook 7. The NbClassic package
 intends to address that need.
 
+You can read more about the migration impacts and coexistence of NbClassic and Notebook package on 
+the `NbClassic and Notebook mibration plan <https://jupyter-notebook.readthedocs.io/en/latest/migrate_to_notebook7.html>`_ page.
+
 .. _Jupyter Enhancement Proposal #79: https://jupyter.org/enhancement-proposals/79-notebook-v7/notebook-v7.html
 
 .. _NbClassicUsage:
@@ -55,72 +58,6 @@ You can view a list of the available options by typing::
     $ jupyter nbclassic --help
 
 
-NbClassic in the Jupyter Ecosystem
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-Read more details about the changes currently taking place in the
-Jupyter Ecosystem in this `team-compass issue`_.
-
-**NbClassic and Notebook 7**
-
-You can install NbClassic, Notebook 7 and JupyterLab, all three of
-which will be providing different user interfaces that will be available
-on the same server. When Notebook 7 is available, the NbClassic UI, will
-be served at the ``/nbclassic/tree`` base path rather than the 
-base path ``/tree`` used otherwise. If you are using Notebook 7 along 
-with NbClassic, you wil also have JupyterLab installed as it is a 
-dependency of Notebook 7, and these front ends will be available 
-through the following base paths: JupyterLab at ``/lab``, Notebook 7 at 
-``/tree``, and NbClassic at ``/nbclassic/tree``.
-
-**NbClassic and Notebook 6.5.x**
-
-As NbClassic provides the static assets for Notebook 6.5.x, while
-having both installed should cause no issues, the user interface provided
-by these two packages will be the same. These UIs would be available in
-different servers. An NbClassic instance will be at a server with the 
-``/tree`` path and opening a Notebook 6.5.x instance will open on a 
-different server with the ``/tree`` path as well, presenting the same 
-static assets. When starting an instance of JupyterLab you will be able 
-to access the classic view of Notebook with NbClassic served on the same 
-server at ``/tree``. 
-
-**NbClassic and Notebook <= 6.4.x**
-
-When using NbClassic and Notebook <= 6.4.x you can expect that these UIs
-will not be only presented at different servers, meaning they will both 
-be available at their respective server under ``/tree`` but they 
-may also differ as potential changes to the NbClassic UI will not be 
-reflected in Notebook versions <= 6.4.x. In this case as well, you would 
-be able to access the classic view of Notebook with NbClassic served on 
-the same server, at ``/tree``.
-
-**NbClassic and JupyterLab 3.x**
-
-When only JupyterLab 3.x is installed, then NbClassic does not have to be 
-explicitly installed as JupyterLab 3.x depends on it. They will run on 
-the same server, and are reachable via ``/tree`` for NbClassic and 
-``/lab`` for JupyterLab.
-
-**NbClassic and JupyterLab 4.x**
-
-When only JupyterLab 4.x is installed, then NbClassic has to be installed 
-explictly. They will run on the same server, and are reachable via 
-``/tree`` for NbClassic, and ``/lab`` for JupyterLab.
-
-**NbClassic Independently**
-
-When you choose to install only NbClassic via ``pip install nbclassic``, 
-the classic Notebook UI will be presented at the ``/tree`` path. As the 
-other frontends are not installed, attempting to access the other paths 
-will return errors. Note that NbClassic being a Jupyter Server extension, 
-indicated Jupyter Server will be available. This provides an additional 
-way to view the NbClassic frontend. You would be able to  manually 
-enable the extension when running an instance of Jupyter Server, 
-``> jupyter server --ServerApp.jpserver_extensions="nbclassic=True"``, 
-which will provide the NbClassic frontend at ``/tree`` path when visited.
-
-.. _team-compass issue: https://github.com/jupyter/notebook-team-compass/issues/5#issuecomment-1085254000
-
 NbClassic Development
 ---------------------
 
@@ -148,5 +85,5 @@ Jupyter Notebook 7.
 ou can find a helpful list of classical Notebook extensions and corresponding Jupyterlab extensions
 if available at the `Jupyterlab-contrib website <https://jupyterlab-contrib.github.io/migrate_from_classical.html>`_.
 
+.. _JEP #79: https://jupyter.org/enhancement-proposals/79-notebook-v7/notebook-v7.html
 
-.. _JEP #79: https://jupyter.org/enhancement-proposals/79-notebook-v7/notebook-v7.html
diff --git a/nbclassic/notebookapp.py b/nbclassic/notebookapp.py
@@ -325,6 +325,20 @@ def initialize_handlers(self):
         router.add_rules(core_rules)
         router.add_rules(static_handlers)
         router.add_rules(final_rules)
+        print("""
+  _   _          _      _
+ | | | |_ __  __| |__ _| |_ ___
+ | |_| | '_ \/ _` / _` |  _/ -_)
+  \___/| .__/\__,_\__,_|\__\___|
+       |_|
+
+Read the migration plan to Notebook 7 to learn about the new features and the actions to take if you are using extensions.
+
+https://jupyter-notebook.readthedocs.io/en/latest/migrate_to_notebook7.html
+
+Please note that updating to Notebook 7 might break some of your extensions.
+""")
+
 
 # -----------------------------------------------------------------------------
 # Main entry point

diff --git a/nbclassic/static/base/js/namespace.js b/nbclassic/static/base/js/namespace.js
@@ -73,7 +73,7 @@ define(function(){
     // tree
     jglobal('SessionList','tree/js/sessionlist');
 
-    Jupyter.version = "0.5.1";
+    Jupyter.version = "0.6.0.dev0";
     Jupyter._target = '_blank';
 
     return Jupyter;

diff --git a/nbclassic/templates/page.html b/nbclassic/templates/page.html
@@ -137,6 +137,26 @@
 </noscript>
 
 <div id="header" role="navigation" aria-label="{% trans %}Top Menu{% endtrans %}">
+  <div  id="newsId" style="display: none">
+    <div class="alert alert-info" role="alert">
+      <div style="display: flex">
+        <div>
+          <span class="label label-warning">UPDATE</span>
+          Read <a href="https://jupyter-notebook.readthedocs.io/en/latest/migrate_to_notebook7.html" style="text-decoration: underline;" target="_blank">the migration plan</a> to Notebook 7 to learn about the new features and the actions to take if you are using extensions
+          -
+          <span class="glyphicon glyphicon-exclamation-sign" aria-hidden="true"></span>
+          Please note that updating to Notebook 7 might break some of your extensions.
+        </div>
+        <div style="margin-left: auto;">
+          <a href="" onclick="alert('This message will not be shown anymore.'); return false;">
+            <button type="button" class="btn btn-default btn-xs" id="dontShowId">
+              <span class="glyphicon glyphicon-remove" aria-hidden="true"></span> Don't show anymore
+            </button>          
+          </a>
+        </div>
+      </div>
+    </div>
+  </div>
   <div id="header-container" class="container">
   <div id="ipython_notebook" class="nav navbar-brand"><a href="
     <div id="ipython_notebook" class="nav navbar-brand"><a href="{{default_url}}
@@ -205,6 +225,16 @@
     }
   }
   _remove_token_from_url();
+  document.addEventListener('DOMContentLoaded', function () {
+    const newsId = document.querySelector('#newsId');
+    const dontShowId = document.querySelector('#dontShowId');
+    const showNbClassicNews = localStorage.getItem('showNbClassicNews');
+    dontShowId.addEventListener('click', () => {
+      localStorage.setItem('showNbClassicNews', false);
+      newsId.style.display = 'none';
+    });
+    if (!showNbClassicNews) newsId.style.display = 'inline';
+  });
 </script>
 </body>