Update to be compatible with ipywidgets 8.0 *and* ipywidgets 7.0.

Author: jasongrout

package.json

@@ -42,8 +42,8 @@
     "watch:labextension": "jupyter labextension watch ."
   },
   "dependencies": {
-    "@jupyter-widgets/base": "^4.0.0",
-    "@jupyter-widgets/jupyterlab-manager": "^3.0.0",
+    "@jupyter-widgets/base": "^4 || ^5 || ^6.0.0-rc.0",
+    "@jupyter-widgets/jupyterlab-manager": "^3 || ^4 || ^5.0.0-rc.0",
     "@jupyterlab/application": "^3.0.0",
     "@lumino/coreutils": "^1.5.3"
   },

pyproject.toml

@@ -1,3 +1,3 @@
 [build-system]
-requires = ["jupyter_packaging~=0.7.9", "jupyterlab~=3.0", "setuptools>=40.8.0", "wheel"]
+requires = ["jupyter_packaging~=0.12", "jupyterlab~=3.0", "setuptools>=40.8.0", "wheel"]
 build-backend = "setuptools.build_meta"

setup.cfg

@@ -1,6 +1,3 @@
-[bdist_wheel]
-universal=1
-
 [metadata]
 description-file = README.md
 license_file = LICENSE.txt

setup.py

@@ -23,9 +23,6 @@
 name = 'sidecar'
 labext_name = '@jupyter-widgets/jupyterlab-sidecar'
 
-# Ensure a valid python version
-ensure_python('>=3.6')
-
 # Get our version
 version = get_version(os.path.join(name, '_version.py'))
 
@@ -77,6 +74,7 @@
     author_email    = '[email protected]',
     url             = 'https://github.com/jupyter-widgets/jupyterlab-sidecar',
     license         = 'BSD',
+    python_requires = ">=3.7",
     platforms       = "Linux, Mac OS X, Windows",
     keywords        = ['Jupyter', 'Widgets', 'IPython'],
     classifiers     = [
@@ -85,10 +83,10 @@
         'License :: OSI Approved :: BSD License',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
         'Framework :: Jupyter',
     ],
     include_package_data = True,

src/widget.ts

@@ -1,6 +1,7 @@
 // Copyright (c) Project Jupyter.
 // Distributed under the terms of the Modified BSD License.
 
+import { DOMWidgetModel } from '@jupyter-widgets/base';
 import {
    output
 } from '@jupyter-widgets/jupyterlab-manager';
@@ -30,7 +31,8 @@ class SidecarModel extends output.OutputModel {
   initialize(attributes: any, options: any) {
     super.initialize(attributes, options);
 
-    this.widget_manager.display_model(undefined as any, this as any, {});
+    // create_view calls the view's render function, which will display this widget in the sidebar.
+    this.widget_manager.create_view(this as DOMWidgetModel, {})
   }
 
   static model_name = 'SidecarModel';