Update for JupyterLab 3

.github/workflows/build.yml

@@ -0,0 +1,59 @@
+name: Build jupyterlab_widgets
+
+on:
+  push:
+    branches: master
+  pull_request:
+    branches: '*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v1
+    - name: Install node
+      uses: actions/setup-node@v1
+      with:
+       node-version: '12.x'
+    - name: Install Python
+      uses: actions/setup-python@v1
+      with:
+        python-version: '3.8'
+        architecture: 'x64'
+    - name: Cache pip on Linux
+      uses: actions/cache@v1
+      if: startsWith(runner.os, 'Linux')
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ matrix.python }}-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-${{ matrix.python }}
+
+    - name: Get yarn cache directory path
+      id: yarn-cache-dir-path
+      run: echo "::set-output name=dir::$(yarn cache dir)"
+    - name: Cache yarn
+      uses: actions/cache@v1
+      id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
+      with:
+        path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+        key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-yarn-
+    - name: Install dependencies
+      run: |
+        python -m pip install --pre jupyterlab==3.0.0b7
+        python -m pip install jupyter_packaging
+    - name: Build the extension
+      run: |
+        pip install .
+        jlpm install
+        jlpm run build
+        cd jupyterlab_widgets
+        pwd
+        pip install -e .
+        jupyter labextension develop . --overwrite
+        jupyter labextension list
+
+        python -m jupyterlab.browser_check

.travis.yml

@@ -3,8 +3,6 @@ language: python
 dist: xenial
 python:
     - 2.7
-    - 3.4
-    - 3.5
     - 3.6
     - 3.7
     - 3.8

docs/source/dev_release.md

@@ -10,7 +10,7 @@ conda deactivate
 conda remove --all -y -n releasewidgets
 rm -rf ipywidgets
 
-conda create -c conda-forge --override-channels -y -n releasewidgets notebook nodejs twine
+conda create -c conda-forge --override-channels -y -n releasewidgets jupyter_packaging notebook nodejs twine
 conda activate releasewidgets
 
 git clone git@github.com:jupyter-widgets/ipywidgets.git

examples/web1/webpack.config.js

@@ -10,7 +10,7 @@ module.exports = {
   },
   module: {
     rules: [
-      { test: /\.css$/, loader: "style-loader!css-loader" },
+      { test: /\.css$/, use: ['style-loader', 'css-loader']},
       // jquery-ui loads some images
       { test: /\.(jpg|png|gif)$/, use: 'file-loader' },
     ]

examples/web2/webpack.config.js

@@ -10,7 +10,7 @@ module.exports = {
     },
     module: {
         rules: [
-            { test: /\.css$/, loader: "style-loader!css-loader" },
+            { test: /\.css$/, use: ['style-loader', 'css-loader']},
             { test: /\.py$/, loader: "raw-loader" },
             // jquery-ui loads some images
             { test: /\.(jpg|png|gif)$/, use: 'file-loader' },

examples/web3/package.json

@@ -18,7 +18,7 @@
     "@jupyter-widgets/base": "^3.0.0",
     "@jupyter-widgets/controls": "^2.0.0",
     "@jupyter-widgets/html-manager": "^0.19.0",
-    "@jupyterlab/services": "^5.0.0-rc.0",
+    "@jupyterlab/services": "^6.0.0-beta.7",
     "@lumino/widgets": "^1.3.0",
     "codemirror": "^5.48.0",
     "font-awesome": "^4.7.0",

examples/web4/webpack.config.js

@@ -10,7 +10,7 @@ module.exports = {
     },
     module: {
         rules: [
-            { test: /\.css$/, loader: "style-loader!css-loader" },
+            { test: /\.css$/, use: ['style-loader', 'css-loader']},
             // jquery-ui loads some images
             { test: /\.(jpg|png|gif)$/, use: 'file-loader' },
             // required to load font-awesome

jupyterlab_widgets/.cookiecutter_replay

@@ -0,0 +1,12 @@
+{
+  "cookiecutter": {
+    "author_name": "Jupyter Development Team",
+    "python_name": "jupyterlab_widgets",
+    "labextension_name": "@jupyter-widgets/jupyterlab-manager",
+    "project_short_description": "A JupyterLab extension.",
+    "has_server_extension": "n",
+    "has_binder": "n",
+    "repository": "https://github.com/jupyter-widgets/ipywidgets",
+    "_template": "https://github.com/jupyterlab/extension-cookiecutter-ts"
+  }
+}

jupyterlab_widgets/.eslintignore

@@ -0,0 +1,5 @@
+node_modules
+dist
+coverage
+**/*.d.ts
+tests

jupyterlab_widgets/.eslintrc.js

@@ -0,0 +1,32 @@
+module.exports = {
+  extends: [
+    'eslint:recommended',
+    'plugin:@typescript-eslint/eslint-recommended',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:prettier/recommended'
+  ],
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    project: 'tsconfig.json',
+    sourceType: 'module'
+  },
+  plugins: ['@typescript-eslint'],
+  rules: {
+    '@typescript-eslint/interface-name-prefix': [
+      'error',
+      { prefixWithI: 'always' }
+    ],
+    '@typescript-eslint/no-unused-vars': ['warn', { args: 'none' }],
+    '@typescript-eslint/no-explicit-any': 'off',
+    '@typescript-eslint/no-namespace': 'off',
+    '@typescript-eslint/no-use-before-define': 'off',
+    '@typescript-eslint/quotes': [
+      'error',
+      'single',
+      { avoidEscape: true, allowTemplateLiterals: false }
+    ],
+    curly: ['error', 'all'],
+    eqeqeq: 'error',
+    'prefer-arrow-callback': 'error'
+  }
+};

jupyterlab_widgets/.gitignore

@@ -0,0 +1,6 @@
+*.bundle.*
+lib/
+node_modules/
+*.egg-info/
+.ipynb_checkpoints
+*.tsbuildinfo

jupyterlab_widgets/.prettierignore

@@ -0,0 +1,4 @@
+node_modules
+**/node_modules
+**/lib
+**/package.json

jupyterlab_widgets/.prettierrc

@@ -0,0 +1,3 @@
+{
+  "singleQuote": true
+}

jupyterlab_widgets/MANIFEST.in

@@ -0,0 +1,21 @@
+include LICENSE
+include README.md
+include pyproject.toml
+
+include package.json
+include ts*.json
+
+graft jupyterlab_widgets/static
+
+# Javascript files
+graft src
+graft style
+prune **/node_modules
+prune lib
+
+# Patterns to exclude from any directory
+global-exclude *~
+global-exclude *.pyc
+global-exclude *.pyo
+global-exclude .git
+global-exclude .ipynb_checkpoints

jupyterlab_widgets/README.md

@@ -0,0 +1,80 @@
+Jupyter Widgets JupyterLab Extension
+====================================
+
+![Github Actions Status](https://github.com/jupyter-widgets/ipywidgets/workflows/Build/badge.svg)
+
+A JupyterLab extension for Jupyter/IPython widgets.
+
+Package Install
+---------------
+
+
+
+## Requirements
+
+* JupyterLab >= 3.0
+
+## Install
+
+```bash
+pip install jupyterlab_widgets
+```
+
+
+### Version compatibility
+
+Prior to JupyterLab 3.0, use the appropriate command from the following list
+to install a compatible JupyterLab extension.
+
+* For JupyterLab 0.30, use `jupyter labextension install @jupyter-widgets/jupyterlab-manager@0.31`
+* For JupyterLab 0.31rc1, use `jupyter labextension install @jupyter-widgets/jupyterlab-manager@0.32`
+* For JupyterLab 0.31rc2, use `jupyter labextension install @jupyter-widgets/jupyterlab-manager@0.33`
+* For JupyterLab 0.31.x, use `jupyter labextension install @jupyter-widgets/jupyterlab-manager@0.34`
+* For JupyterLab 0.32.x, use `jupyter labextension install @jupyter-widgets/jupyterlab-manager@0.35`
+* For JupyterLab 0.33.x, use `jupyter labextension install @jupyter-widgets/jupyterlab-manager@0.36`
+* For JupyterLab 0.34.x, use `jupyter labextension install @jupyter-widgets/jupyterlab-manager@0.37`
+* For JupyterLab 0.35.x, use `jupyter labextension install @jupyter-widgets/jupyterlab-manager@0.38`
+* For JupyterLab 1.0.x and 1.1.x, use `jupyter labextension install @jupyter-widgets/jupyterlab-manager@1.0`
+* For JupyterLab 1.2.x, use `jupyter labextension install @jupyter-widgets/jupyterlab-manager@1.1`
+* For JupyterLab 2.x, use `jupyter labextension install @jupyter-widgets/jupyterlab-manager@2`
+
+
+
+## Contributing
+
+### Development install
+
+Note: You will need NodeJS to build the extension package.
+
+The `jlpm` command is JupyterLab's pinned version of
+[yarn](https://yarnpkg.com/) that is installed with JupyterLab. You may use
+`yarn` or `npm` in lieu of `jlpm` below.
+
+```bash
+# Clone the repo to your local environment
+# Change directory to the jupyterlab_widgets directory
+# Install package in development mode
+pip install -e .
+# Link your development version of the extension with JupyterLab
+jupyter labextension develop . --overwrite
+# Rebuild extension Typescript source after making changes
+jlpm run build
+```
+
+You can watch the source directory and run JupyterLab at the same time in different terminals to watch for changes in the extension's source and automatically rebuild the extension.
+
+```bash
+# Watch the source directory in one terminal, automatically rebuilding when needed
+jlpm run watch
+# Run JupyterLab in another terminal
+jupyter lab
+```
+
+With the watch command running, every saved change will immediately be built locally and available in your running JupyterLab. Refresh JupyterLab to load the change in your browser (you may need to wait several seconds for the extension to be rebuilt).
+
+### Uninstall
+
+```bash
+pip uninstall jupyterlab_widgets
+jupyter labextension uninstall @jupyter-widgets/jupyterlab-manager
+```

packages/jupyterlab-manager/.gitignore → jupyterlab_widgets/jupyterlab_widgets/.gitignore

@@ -11,3 +11,4 @@ dist
 build
 docs
 example/*.js
+static/

jupyterlab_widgets/jupyterlab_widgets/__init__.py

@@ -0,0 +1,19 @@
+
+import json
+import os.path as osp
+
+from ._version import __version__
+
+HERE = osp.abspath(osp.dirname(__file__))
+
+with open(osp.join(HERE, 'static', 'package.json')) as fid:
+    data = json.load(fid)
+
+def _jupyter_labextension_paths():
+    return [{
+        'src': 'static',
+        'dest': data['name']
+    }]
+
+
+

jupyterlab_widgets/jupyterlab_widgets/_version.py

@@ -0,0 +1,6 @@
+version_info = (1, 0, 0, 'alpha', 1)
+
+_specifier_ = {'alpha': 'a', 'beta': 'b', 'candidate': 'rc', 'final': ''}
+
+__version__ = '%s.%s.%s%s'%(version_info[0], version_info[1], version_info[2],
+  '' if version_info[3]=='final' else _specifier_[version_info[3]]+str(version_info[4]))