Update widget dependency

Author: vidartf

js/package.json

@@ -20,16 +20,15 @@
   },
   "devDependencies": {
     "eslint": "^4.11.0",
-    "fs-extra": "^4.0.1",
-    "glob": "^7.0.6",
-    "handlebars": "^4.0.5",
-    "rimraf": "^2.4.1",
-    "underscore": "^1.8.3",
-    "webpack": "^3.6.0"
+    "fs-extra": "^4.0.2",
+    "glob": "^7.1.2",
+    "handlebars": "^4.0.11",
+    "rimraf": "^2.6.2",
+    "webpack": "^3.8.1"
   },
   "dependencies": {
-    "@jupyter-widgets/base": "^1.0.0",
-    "bluebird": "^3.4.3",
+    "@jupyter-widgets/base": "^1.1.4",
+    "bluebird": "^3.5.1",
     "jupyter-dataserializers": "^1.0.0",
     "three": "^0.87.1",
     "underscore": "^1.8.3"

js/src/_base/utils.js

@@ -186,16 +186,6 @@ function lookAtSphere(camera, center, radius, setNearFar) {
 }
 
 
-
-/**
- * Work around for notebook issue #2730.
- */
-function commOpenWithBuffers(comm, content, callbacks, metadata, buffers) {
-    return comm.kernel.send_shell_message(
-        'comm_open', content, callbacks, metadata, buffers);
-}
-
-
 /**
  * Create a new model from the JS side.
  *
@@ -213,14 +203,7 @@ function createModel(constructor, widget_manager, obj) {
     var attributes = { };
     var widget_model = new constructor(attributes, modelOptions);
 
-    widget_model.once('comm:close', function() {
-        delete widget_manager._models[id];
-    });
-
-    widget_manager._models[id] = widget_model.initPromise.then(function() {
-        // Create un-opened comm:
-        return widget_manager._create_comm(widget_manager.comm_target_name, id);
-    }).then(function(comm) {
+    var modelPromise = widget_model.initPromise.then(function() {
         var split = widgets.remove_buffers(
             widget_model.serialize(widget_model.get_state(true)));
         var data = {
@@ -235,15 +218,12 @@ function createModel(constructor, widget_manager, obj) {
             buffer_paths: split.buffer_paths
         };
         var buffers = split.buffers;
-
-        var content = {
-            'comm_id': id,
-            'target_name': widget_manager.comm_target_name,
-            'data': data
-        };
         var metadata = {version: widgets.PROTOCOL_VERSION};
 
-        commOpenWithBuffers(comm, content, null, metadata, buffers);
+        // Create un-opened comm:
+        return widget_manager._create_comm(
+            widget_manager.comm_target_name, id, data, metadata, buffers);
+    }).then(function(comm) {
 
         widget_model.comm = comm;
 
@@ -255,8 +235,9 @@ function createModel(constructor, widget_manager, obj) {
 
         return widget_model;
     });
+    widget_manager.register_model(id, modelPromise);
 
-    return widget_manager._models[id];
+    return modelPromise;
 }