moving, checking MathJax typesetting to WidgetView

widget rendering should not fail hard if MathJax is not available

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

@@ -389,6 +389,17 @@ define(["widgets/js/manager",
                 this.on('displayed', callback, context);
             }
         },
+
+        typeset: function(element){
+            // check if MathJax is available, and if so use it to
+            // typeset some DOM
+            if(!window.MathJax){ return; }
+            return MathJax.Hub.Queue([
+                "Typeset",
+                MathJax.Hub,
+                element
+            ]);
+        }
     });
 
 

IPython/html/static/widgets/js/widget_bool.js

@@ -63,7 +63,7 @@ define([
                     this.$label.hide();
                 } else {
                     this.$label.text(description);
-                    MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$label.get(0)]);
+                    this.typeset(this.$label.get(0));
                     this.$label.show();
                 }
             }

IPython/html/static/widgets/js/widget_box.js

@@ -320,7 +320,7 @@ define([
                 this.$title.html(" "); // Preserve title height
             } else {
                 this.$title.text(description);
-                MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$title.get(0)]);
+                this.typeset(this.$title.get(0));
             }
             
             var button_text = this.model.get('button_text');

IPython/html/static/widgets/js/widget_int.js

@@ -156,7 +156,7 @@ define([
                     this.$label.hide();
                 } else {
                     this.$label.text(description);
-                    MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$label.get(0)]);
+                    this.typeset(this.$label.get(0));
                     this.$label.show();
                 }
                 
@@ -324,7 +324,7 @@ define([
                     this.$label.hide();
                 } else {
                     this.$label.text(description);
-                    MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$label.get(0)]);
+                    this.typeset(this.$label.get(0));
                     this.$label.show();
                 }
             }
@@ -444,7 +444,7 @@ define([
                 this.$label.hide();
             } else {
                 this.$label.text(description);
-                MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$label.get(0)]);
+                this.typeset(this.$label.get(0));
                 this.$label.show();
             }
             return ProgressView.__super__.update.apply(this);

IPython/html/static/widgets/js/widget_selection.js

@@ -98,7 +98,7 @@ define([
                     this.$label.hide();
                 } else {
                     this.$label.text(description);
-                    MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$label.get(0)]);
+                    this.typeset(this.$label.get(0));
                     this.$label.show();
                 }
             }
@@ -231,7 +231,7 @@ define([
                     this.$label.hide();
                 } else {
                     this.$label.text(description);
-                    MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$label.get(0)]);
+                   this.typeset(this.$label.get(0));
                     this.$label.show();
                 }
             }
@@ -346,7 +346,7 @@ define([
                     this.$label.hide();
                 } else {
                     this.$label.text(description);
-                    MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$label.get(0)]);
+                    this.typeset(this.$label.get(0));
                     this.$label.show();
                 }
             }
@@ -469,7 +469,7 @@ define([
                     this.$label.hide();
                 } else {
                     this.$label.text(description);
-                    MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$label.get(0)]);
+                    this.typeset(this.$label.get(0));
                     this.$label.show();
                 }
             }

IPython/html/static/widgets/js/widget_string.js

@@ -44,8 +44,7 @@ define([
              * changed by another view or by a state update from the back-end.
              */
             this.$el.text(this.model.get('value'));
-            MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$el.get(0)]);
-
+            this.typeset(this.$el.get(0));
             return LatexView.__super__.update.apply(this);
         }, 
     });
@@ -117,7 +116,7 @@ define([
                     this.$label.hide();
                 } else {
                     this.$label.text(description);
-                    MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$label.get(0)]);
+                    this.typeset(this.$label.get(0));
                     this.$label.show();
                 }
             }
@@ -201,7 +200,7 @@ define([
                     this.$label.hide();
                 } else {
                     this.$label.text(description);
-                    MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$label.get(0)]);
+                    this.typeset(this.$label.get(0));
                     this.$label.show();
                 }
             }