Remove uneccessary lines in String.js

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

@@ -1,190 +1,188 b''
 //----------------------------------------------------------------------------
 //  Copyright (C) 2013 The IPython Development Team
 //
 //  Distributed under the terms of the BSD License.  The full license is in
 //  the file COPYING, distributed as part of this software.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // StringWidget
 //============================================================================
 
 /**
  * @module IPython
  * @namespace IPython
  **/
 
 define(["notebook/js/widget"], function(widget_manager){
     var StringWidgetModel = IPython.WidgetModel.extend({});
     widget_manager.register_widget_model('StringWidgetModel', StringWidgetModel);
 
     var HTMLView = IPython.WidgetView.extend({
       
         // Called when view is rendered.
         render : function(){
             this.update(); // Set defaults.
         },
         
         // Handles: Backend -> Frontend Sync
         //          Frontent -> Frontend Sync
         update : function(){
             this.$el.html(this.model.get('value'));
             return IPython.WidgetView.prototype.update.call(this);
         },
         
     });
 
     widget_manager.register_widget_view('HTMLView', HTMLView);
 
 
     var LatexView = IPython.WidgetView.extend({
       
         // Called when view is rendered.
         render : function(){
             this.update(); // Set defaults.
         },
         
         // Handles: Backend -> Frontend Sync
         //          Frontent -> Frontend Sync
         update : function(){
-            var that=this;
             this.$el.html(this.model.get('value'));
-            var math_el = that.$el.get(0);
-            MathJax.Hub.Queue(["Typeset",MathJax.Hub,math_el]);
-            
+            MathJax.Hub.Queue(["Typeset",MathJax.Hub,this.$el.get(0)]);
+
             return IPython.WidgetView.prototype.update.call(this);
         },
         
     });
 
     widget_manager.register_widget_view('LatexView', LatexView);
 
     var TextAreaView = IPython.WidgetView.extend({
       
         // Called when view is rendered.
         render: function(){
             this.$el
                 .addClass('widget-hbox')
                 .html('');
             this.$label = $('<div />')
                 .appendTo(this.$el)
                 .addClass('widget-hlabel')
                 .hide();
             this.$textbox = $('<textarea />')
                 .attr('rows', 5)
                 .addClass('widget-text')
                 .appendTo(this.$el);
             this.$el_to_style = this.$textbox; // Set default element to style
             this.update(); // Set defaults.
 
             this.model.on_msg($.proxy(this._handle_textarea_msg, this));
         },
 
 
         _handle_textarea_msg: function (content){
             if (content.method == "scroll_to_bottom") {
                 this.scroll_to_bottom();                
             }
         },
 
 
         scroll_to_bottom: function (){
             this.$textbox.scrollTop(this.$textbox[0].scrollHeight);
         },
 
         
         // Handles: Backend -> Frontend Sync
         //          Frontent -> Frontend Sync
         update: function(){
             if (!this.user_invoked_update) {
                 this.$textbox.val(this.model.get('value'));
             }
 
             var disabled = this.model.get('disabled');
             this.$textbox.prop('disabled', disabled);
 
             var description = this.model.get('description');
             if (description.length == 0) {
                 this.$label.hide();
             } else {
                 this.$label.html(description);
                 this.$label.show();
             }
             return IPython.WidgetView.prototype.update.call(this);
         },
         
         events: {"keyup textarea": "handleChanging",
                 "paste textarea": "handleChanging",
                 "cut textarea": "handleChanging"},
         
         // Handles and validates user input.
         handleChanging: function(e) { 
             this.user_invoked_update = true;
             this.model.set('value', e.target.value);
             this.model.update_other_views(this);
             this.user_invoked_update = false;
         },
     });
 
     widget_manager.register_widget_view('TextAreaView', TextAreaView);
 
     var TextBoxView = IPython.WidgetView.extend({
       
         // Called when view is rendered.
         render: function(){
             this.$el
                 .addClass('widget-hbox-single')
                 .html('');
             this.$label = $('<div />')
                 .addClass('widget-hlabel')
                 .appendTo(this.$el)
                 .hide();
             this.$textbox = $('<input type="text" />')
                 .addClass('input')
                 .addClass('widget-text')
                 .appendTo(this.$el);
             this.$el_to_style = this.$textbox; // Set default element to style
             this.update(); // Set defaults.
         },
         
         // Handles: Backend -> Frontend Sync
         //          Frontent -> Frontend Sync
         update: function(){
             if (this.$textbox.val() != this.model.get('value')) {
                 this.$textbox.val(this.model.get('value'));
             }
 
             var disabled = this.model.get('disabled');
             this.$textbox.prop('disabled', disabled);
 
             var description = this.model.get('description');
             if (description.length == 0) {
                 this.$label.hide();
             } else {
                 this.$label.html(description);
                 this.$label.show();
             }
             return IPython.WidgetView.prototype.update.call(this);
         },
         
         events: {"keyup input": "handleChanging",
                 "paste input": "handleChanging",
                 "cut input": "handleChanging",
                 "keypress input": "handleKeypress"},
         
         // Handles and validates user input.
         handleChanging: function(e) { 
             this.model.set('value', e.target.value);
             this.model.update_other_views(this);
         },
         
         // Handles text submition
         handleKeypress: function(e) { 
             if (e.keyCode == 13) { // Return key
                 this.send({event: 'submit'});
             }
         },
     });
 
     widget_manager.register_widget_view('TextBoxView', TextBoxView);
 });