widget changes continued

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

@@ -409,11 +409,9 b' define(["widgets/js/manager",'
             // Public constructor
             DOMWidgetView.__super__.initialize.apply(this, arguments);
             this.on('displayed', this.show, this);
-
             this.model.on('msg:custom', this.on_msg, this);
             this.model.on('change:visible', this.update_visible, this);
             this.model.on('change:_css', this.update_css, this);
-
             this.update_visible(this.model, this.model.get("visible"));
             this.update_css(this.model, this.model.get("_css"));
         },
@@ -450,7 +448,7 b' define(["widgets/js/manager",'
          },
 
         update_css: function (model, css) {
-            // Update the contents of this view
+            // Update the css styling of this view.
             var e = this.$el;
             if (css === undefined) {return;}
             for (var i = 0; i < css.length; i++) {

IPython/html/static/widgets/js/widget_container.js

@@ -39,7 +39,7 b' define(['
             var view = this.create_child_view(model);
             this.$el.append(view.$el);
 
-            // Trigger the displayed event once this view is displayed.
+            // Trigger the displayed event of the child view.
             this.after_displayed(function() {
                 view.trigger('displayed');
             });
@@ -221,7 +221,7 b' define(['
             var view = this.create_child_view(model);
             this.$body.append(view.$el);
 
-            // Trigger the displayed event once this view is displayed.
+            // Trigger the displayed event of the child view.
             this.after_displayed(function() {
                 view.trigger('displayed');
             });

IPython/html/static/widgets/js/widget_selectioncontainer.js

@@ -30,15 +30,7 b' define(['
             var that = this;
             this.on('displayed', function() {
                 this.update_titles();
-                // Trigger model displayed events for any models that are child to 
-                // this model when this model is displayed.
-                that.is_displayed = true;
-                for (var property in that.child_views) {
-                    if (that.child_views.hasOwnProperty(property)) {
-                        that.child_views[property].trigger('displayed');
-                    }
-                }
-            }, this);
+            }
         },
 
         update_titles: function(titles) {
@@ -127,10 +119,10 b' define(['
             this.update();
             this.update_titles();
 
-            // Trigger the displayed event if this model is displayed.
-            if (this.is_displayed) {
+            // Trigger the displayed event of the child view.
+            this.after_displayed(function() {
                 view.trigger('displayed');
-            }
+            });
         },
     });
     
@@ -158,17 +150,6 b' define(['
             this.model.on('change:children', function(model, value, options) {
                 this.update_children(model.previous('children'), value);
             }, this);
-
-            // Trigger model displayed events for any models that are child to 
-            // this model when this model is displayed.
-            this.on('displayed', function(){
-                that.is_displayed = true;
-                for (var property in that.child_views) {
-                    if (that.child_views.hasOwnProperty(property)) {
-                        that.child_views[property].trigger('displayed');
-                    }
-                }
-            });
         },
 
         update_children: function(old_list, new_list) {
@@ -222,10 +203,10 b' define(['
                 .appendTo(this.$tab_contents);
             view.parent_container = contents_div;
 
-            // Trigger the displayed event if this model is displayed.
-            if (this.is_displayed) {
+            // Trigger the displayed event of the child view.
+            this.after_displayed(function() {
                 view.trigger('displayed');
-            }
+            });
         },
 
         update: function(options) {