make autostart of webapp optional

Author: happydasch

btplotting/webapp.py

@@ -14,13 +14,14 @@
 
 class Webapp:
     def __init__(self, title, html_template, scheme, model_factory_fnc,
-                 on_session_destroyed=None, port=80):
+                 on_session_destroyed=None, port=80, autostart=False):
         self._title = title
         self._html_template = html_template
         self._scheme = scheme
         self._model_factory_fnc = model_factory_fnc
         self._port = port
         self._on_session_destroyed = on_session_destroyed
+        self._autostart = autostart
 
     def start(self, ioloop=None):
         '''
@@ -45,13 +46,12 @@ def make_document(doc: Document):
             model = self._model_factory_fnc(doc)
             doc.add_root(model)
 
-        self._run_server(make_document, ioloop=ioloop, port=self._port)
+        self._run_server(make_document, ioloop=ioloop, port=self._port,
+                         autostart=self._autostart)
 
     @staticmethod
-    def _run_server(fnc_make_document, iplot=True,
-                    notebook_url='localhost:8889',
-                    port=80, ioloop=None):
-
+    def _run_server(fnc_make_document, notebook_url='localhost:8889',
+                    iplot=True, ioloop=None, port=80, autostart=False):
         '''
         Runs a Bokeh webserver application. Documents will be created using
         fnc_make_document
@@ -64,8 +64,11 @@ def _run_server(fnc_make_document, iplot=True,
             show(app, notebook_url=notebook_url)  # noqa
         else:
             apps = {'/': app}
-            print(f'Browser is launching at: http://localhost:{port}')
-            view(f'http://localhost:{port}')
+            if autostart:
+                print(f'Browser is launching at: http://localhost:{port}')
+                view(f'http://localhost:{port}')
+            else:
+                print(f'Open browser at: http://localhost:{port}')
             server = Server(apps, port=port, io_loop=ioloop)
             if ioloop is None:
                 server.run_until_shutdown()