Pass configured plotly_domain to FigureWidget as plotlyServerURL config parameter

js/src/Figure.js

@@ -36,6 +36,7 @@ var FigureModel = widgets.DOMWidgetModel.extend({
         // messages
         _data: [],
         _layout: {},
+        _config: {},
 
         // Python -> JS messages
         // ---------------------
@@ -748,8 +749,9 @@ var FigureView = widgets.DOMWidgetView.extend({
         // the model is not directly mutated by the Plotly.js library.
         var initialTraces = _.cloneDeep(this.model.get("_data"));
         var initialLayout = _.cloneDeep(this.model.get("_layout"));
+        var config = this.model.get("_config");
 
-        Plotly.newPlot(that.el, initialTraces, initialLayout).then(
+        Plotly.newPlot(that.el, initialTraces, initialLayout, config).then(
             function () {
 
                 // ### Send trace deltas ###

plotly/basedatatypes.py

@@ -9,6 +9,7 @@
 from copy import deepcopy, copy
 from pprint import PrettyPrinter
 
+from plotly.offline.offline import _get_jconfig
 from .optional_imports import get_module
 
 from . import offline as pyo
@@ -191,6 +192,16 @@ class is a subclass of both BaseFigure and widgets.DOMWidget.
         self._layout_obj._orphan_props.clear()
         self._layout_obj._parent = self
 
+        # Config
+        # ------
+        # Pass along default config to the front end. For now this just
+        # ensures that the plotly domain url gets passed to the front end.
+        # In the future we can extend this to allow the user to supply
+        # arbitrary config options like in plotly.offline.plot/iplot.  But
+        # this will require a fair amount of testing to determine which
+        # options are compatible with FigureWidget.
+        self._config = _get_jconfig(None)
+
         # Frames
         # ------
 

plotly/basewidget.py

@@ -46,6 +46,7 @@ class BaseFigureWidget(BaseFigure, widgets.DOMWidget):
     # using the relayout/restyle/update/etc. messages.
     _layout = Dict().tag(sync=True, **custom_serializers)
     _data = List().tag(sync=True, **custom_serializers)
+    _config = Dict().tag(sync=True, **custom_serializers)
 
     # ### Python -> JS message properties ###
     # These properties are used to send messages from Python to the

plotly/offline/offline.py

@@ -158,19 +158,18 @@ def _get_jconfig(config):
     # really be somewhere other than plotly.plotly
     plotly_platform_url = plotly.plotly.get_config().get('plotly_domain',
                                                          'https://plot.ly')
+    clean_config['plotlyServerURL'] = plotly_platform_url
 
     if (plotly_platform_url != 'https://plot.ly' and
-        clean_config['linkText'] == 'Export to plot.ly'):
-
+        clean_config.get('linkText', None) == 'Export to plot.ly'):
         link_domain = plotly_platform_url\
             .replace('https://', '')\
             .replace('http://', '')
         link_text = clean_config['linkText'].replace('plot.ly', link_domain)
         clean_config['linkText'] = link_text
-        clean_config['plotlyServerURL'] = plotly_platform_url
 
     return clean_config
-    
+
 
 # Build script to set global PlotlyConfig object. This must execute before
 # plotly.js is loaded.

plotlywidget/static/index.js

@@ -12607,6 +12607,7 @@ var FigureModel = widgets.DOMWidgetModel.extend({
         // messages
         _data: [],
         _layout: {},
+        _config: {},
 
         // Python -> JS messages
         // ---------------------
@@ -13319,8 +13320,9 @@ var FigureView = widgets.DOMWidgetView.extend({
         // the model is not directly mutated by the Plotly.js library.
         var initialTraces = _.cloneDeep(this.model.get("_data"));
         var initialLayout = _.cloneDeep(this.model.get("_layout"));
+        var config = this.model.get("_config");
 
-        Plotly.newPlot(that.el, initialTraces, initialLayout).then(
+        Plotly.newPlot(that.el, initialTraces, initialLayout, config).then(
             function () {
 
                 // ### Send trace deltas ###