Choose correct layer style widget for scatter layers in the Jupyter v…

…olume viewer.

glue_vispy_viewers/volume/jupyter/volume_viewer.py

@@ -1,8 +1,12 @@
 import os
 
 from glue_jupyter.view import IPyWidgetView
+
+from ...scatter.layer_artist import ScatterLayerArtist
+from ..layer_artist import VolumeLayerArtist
 from ..volume_viewer import VispyVolumeViewerMixin
 from .viewer_state_widget import Volume3DViewerStateWidget
+from ...scatter.jupyter.layer_state_widget import Scatter3DLayerStateWidget
 from .layer_state_widget import Volume3DLayerStateWidget
 from ...common.jupyter.toolbar import VispyJupyterToolbar
 
@@ -12,8 +16,9 @@
 class JupyterVispyVolumeViewer(VispyVolumeViewerMixin, IPyWidgetView):
 
     _options_cls = Volume3DViewerStateWidget
-    _layer_style_widget_cls = Volume3DLayerStateWidget
     _toolbar_cls = VispyJupyterToolbar
+    _layer_style_widget_cls = {VolumeLayerArtist: Volume3DLayerStateWidget,
+                               ScatterLayerArtist: Scatter3DLayerStateWidget}
 
     def __init__(self, *args, **kwargs):
         # Vispy and jupyter_rfb don't work correctly on Linux unless DISPLAY is set