Update favicon handler

jupyterlab/serverextension.py

@@ -1,4 +1,6 @@
 from .labapp import LabApp
+from tornado.web import RedirectHandler
+from jupyter_server.utils import url_path_join
 
 
 def load_jupyter_server_extension(serverapp):
@@ -10,4 +12,22 @@ def load_jupyter_server_extension(serverapp):
     extension.load_config_file()
     extension.update_config(serverapp.config)
     extension.parse_command_line(serverapp.extra_args)
-    extension.initialize()
+    extension.handlers.extend([
+        (r"/static/favicons/favicon.ico", RedirectHandler,
+            {"url": url_path_join(serverapp.base_url, "static/base/images/favicon.ico")}),
+        (r"/static/favicons/favicon-busy-1.ico", RedirectHandler,
+            {"url": url_path_join(serverapp.base_url, "static/base/images/favicon-busy-1.ico")}),
+        (r"/static/favicons/favicon-busy-2.ico", RedirectHandler,
+            {"url": url_path_join(serverapp.base_url, "static/base/images/favicon-busy-2.ico")}),
+        (r"/static/favicons/favicon-busy-3.ico", RedirectHandler,
+            {"url": url_path_join(serverapp.base_url, "static/base/images/favicon-busy-3.ico")}),
+        (r"/static/favicons/favicon-file.ico", RedirectHandler,
+            {"url": url_path_join(serverapp.base_url, "static/base/images/favicon-file.ico")}),
+        (r"/static/favicons/favicon-notebook.ico", RedirectHandler,
+            {"url": url_path_join(serverapp.base_url, "static/base/images/favicon-notebook.ico")}),
+        (r"/static/favicons/favicon-terminal.ico", RedirectHandler,
+            {"url": url_path_join(serverapp.base_url, "static/base/images/favicon-terminal.ico")}),
+        (r"/static/logo/logo.png", RedirectHandler,
+            {"url": url_path_join(serverapp.base_url, "static/base/images/logo.png")}),
+    ])
+    extension.initialize()