Delete the snapshot message handler

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

@@ -1,213 +1,209 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.
 //----------------------------------------------------------------------------
 
 //============================================================================
 // WidgetModel, WidgetView, and WidgetManager
 //============================================================================
 /**
  * Base Widget classes
  * @module IPython
  * @namespace IPython
  * @submodule widget
  */
 
 (function () {
     "use strict";
 
     // Use require.js 'define' method so that require.js is intelligent enough to
     // syncronously load everything within this file when it is being 'required' 
     // elsewhere.
     define(["underscore",
              "backbone",
             ], function (underscore, backbone) {
 
         //--------------------------------------------------------------------
         // WidgetManager class
         //--------------------------------------------------------------------
         var WidgetManager = function () {
             this.comm_manager = null;
             this.widget_model_types = {};
             this.widget_view_types = {};
             this._model_instances = {};
             
             Backbone.sync = function (method, model, options, error) {
                 var result = model._handle_sync(method, options);
                 if (options.success) {
                   options.success(result);
                 }
             }; 
         };
 
 
         WidgetManager.prototype.attach_comm_manager = function (comm_manager) {
             this.comm_manager = comm_manager;
 
             // Register already-registered widget model types with the comm manager.
             for (var widget_model_name in this.widget_model_types) {
                 this.comm_manager.register_target(widget_model_name, $.proxy(this._handle_comm_open, this));
             }
         };
 
 
         WidgetManager.prototype.register_widget_model = function (widget_model_name, widget_model_type) {
             // Register the widget with the comm manager.  Make sure to pass this object's context
             // in so `this` works in the call back.
             if (this.comm_manager !== null) {
                 this.comm_manager.register_target(widget_model_name, $.proxy(this._handle_comm_open, this));
             }
             this.widget_model_types[widget_model_name] = widget_model_type;
         };
 
 
         WidgetManager.prototype.register_widget_view = function (widget_view_name, widget_view_type) {
             this.widget_view_types[widget_view_name] = widget_view_type;
         };
 	WidgetManager.prototype.handle_msg = function(msg, model) {
 	    var method = msg.content.data.method;
 	    switch (method) {
 		case 'display':
 		    var cell = this.get_msg_cell(msg.parent_header.msg_id);
 		    if (cell === null) {
 			console.log("Could not determine where the display" + 
 				    " message was from.  Widget will not be displayed");
 		    } else {
 			var view = this.create_view(model, 
 						    msg.content.data.view_name, cell);
 			if (view !== undefined 
 			    && cell.widget_subarea !== undefined 
 			    && cell.widget_subarea !== null) {
                             cell.widget_area.show();
                             cell.widget_subarea.append(view.$el);
 			}
 		    }
 		    break;
-		case 'set_snapshot':
-                    var cell = this.get_msg_cell(msg.parent_header.msg_id);
-                    cell.metadata.snapshot = msg.content.data.snapshot;
-                    break;
 	    }
 	}
 
 	WidgetManager.prototype.create_view = function(model, view_name, cell) {
 	    view_name = view_name || model.get('default_view_name');
             var ViewType = this.widget_view_types[view_name];
             if (ViewType !== undefined && ViewType !== null) {
                 var view = new ViewType({model: model, widget_manager: this, cell: cell});
                 view.render();
 		model.views.push(view);
 		/*
                 // jng: Handle when the view element is remove from the page.
 		// observe the view destruction event and do this.  We may need
 		// to override the view's remove method to trigger this event.
                 var that = this;
                 view.$el.on("remove", function () { 
                     var index = that.views.indexOf(view);
                     if (index > -1) {
                         that.views.splice(index, 1);
                     }
                     view.remove(); // Clean-up view 
 
                     // Close the comm if there are no views left.
                     if (that.views.length() === 0) {
 			//jng: trigger comm close event
                         }
 
 		        
                         if (that.comm !== undefined) {
                             that.comm.close();
                             delete that.comm.model; // Delete ref so GC will collect widget model.
                             delete that.comm;
                         }
                         delete that.widget_id; // Delete id from model so widget manager cleans up.
                     });
 		*/
                 return view;
             }
         },
 
         WidgetManager.prototype.get_msg_cell = function (msg_id) {
 	    var cell = null;
             // First, check to see if the msg was triggered by cell execution.
             if (IPython.notebook !== undefined && IPython.notebook !== null) {
                 cell = IPython.notebook.get_msg_cell(msg_id);
             }
 	    if (cell !== null) {
 		return cell
 	    }
             // Second, check to see if a get_cell callback was defined
             // for the message.  get_cell callbacks are registered for
             // widget messages, so this block is actually checking to see if the
             // message was triggered by a widget.
             var kernel = this.get_kernel();
             if (kernel !== undefined && kernel !== null) {
                 var callbacks = kernel.get_callbacks_for_msg(msg_id);
                 if (callbacks !== undefined && 
                     callbacks.iopub !== undefined && 
                     callbacks.iopub.get_cell !== undefined) {
 
                     return callbacks.iopub.get_cell();
                 }    
             }
             
             // Not triggered by a cell or widget (no get_cell callback 
             // exists).
             return null;
         };
 
 
         WidgetManager.prototype.get_model = function (widget_id) {
             var model = this._model_instances[widget_id];
             if (model !== undefined && model.id == widget_id) {
                 return model;
             }
             return null;
         };
 
 
         WidgetManager.prototype.get_kernel = function () {
             if (this.comm_manager === null) {
                 return null;
             } else {
                 return this.comm_manager.kernel;
             }
         };
 
 
         WidgetManager.prototype.on_create_widget = function (callback) {
             this._create_widget_callback = callback;
         };
 
 
         WidgetManager.prototype._handle_create_widget = function (widget_model) {
             if (this._create_widget_callback) {
                 try {
                     this._create_widget_callback(widget_model);
                 } catch (e) {
                     console.log("Exception in WidgetManager callback", e, widget_model);
                 }
             }
         };
 
 
         WidgetManager.prototype._handle_comm_open = function (comm, msg) {
             var widget_type_name = msg.content.target_name;
             var widget_model = new this.widget_model_types[widget_type_name](this, comm.comm_id, comm);
             this._model_instances[comm.comm_id] = widget_model;
             this._handle_create_widget(widget_model);
         };
         
         //--------------------------------------------------------------------
         // Init code
         //--------------------------------------------------------------------
         IPython.WidgetManager = WidgetManager;
         if (IPython.widget_manager === undefined || IPython.widget_manager === null) {
             IPython.widget_manager = new WidgetManager();    
         }
 
         return IPython.widget_manager;
     });
 }());