Fixed bug where views child to other views would not have cell information

IPython/html/static/notebook/js/widgetmanager.js

@@ -90,10 +90,18
             }
         },
 
-        WidgetManager.prototype.create_view = function(model, options) {
+        WidgetManager.prototype.create_view = function(model, options, view) {
             var view_name = model.get('view_name');
             var ViewType = WidgetManager._view_types[view_name];
             if (ViewType !== undefined && ViewType !== null) {
+
+                // If a view is passed into the method, use that view's cell as
+                // the cell for the view that is created.
+                options = options || {};
+                if (view !== undefined) {
+                    options.cell = view.options.cell;
+                }
+
                 var parameters = {model: model, options: options};
                 var view = new ViewType(parameters);
                 view.render();

IPython/html/static/notebook/js/widgets/widget.js

@@ -261,7 +261,7 function(WidgetManager, Underscore, Backbone){
             // TODO: this is hacky, and makes the view depend on this cell attribute and widget manager behavior
             // it would be great to have the widget manager add the cell metadata
             // to the subview without having to add it here.
-            var child_view = this.model.widget_manager.create_view(child_model, options || {});
+            var child_view = this.model.widget_manager.create_view(child_model, options || {}, this);
             this.child_views[child_model.id] = child_view;
             return child_view;
         },