Integrate theme cookiecutter

.github/workflows/main.yml

@@ -200,7 +200,7 @@ jobs:
       - name: Create server extension pip install
         run: |
           # Trick to use custom parameters
-          python -c "from cookiecutter.main import cookiecutter; import json; f=open('cookiecutter.json'); d=json.load(f); f.close(); d['has_server_extension']='y'; cookiecutter('.', extra_context=d, no_input=True)"
+          python -c "from cookiecutter.main import cookiecutter; import json; f=open('cookiecutter.json'); d=json.load(f); f.close(); d['kind']='server'; cookiecutter('.', extra_context=d, no_input=True)"
           cd myextension
           pip install .
           pip install jupyterlab
@@ -223,7 +223,7 @@ jobs:
       - name: Create server extension pip develop
         run: |
           # Trick to use custom parameters
-          python -c "from cookiecutter.main import cookiecutter; import json; f=open('cookiecutter.json'); d=json.load(f); f.close(); d['has_server_extension']='y'; cookiecutter('.', extra_context=d, no_input=True)"
+          python -c "from cookiecutter.main import cookiecutter; import json; f=open('cookiecutter.json'); d=json.load(f); f.close(); d['kind']='server'; cookiecutter('.', extra_context=d, no_input=True)"
           cd myextension
           pip install -e .
           pip install jupyterlab
@@ -255,7 +255,7 @@ jobs:
       - name: Install server extension from a tarball
         run: |
           # Trick to use custom parameters
-          python -c "from cookiecutter.main import cookiecutter; import json; f=open('cookiecutter.json'); d=json.load(f); f.close(); d['has_server_extension']='y'; cookiecutter('.', extra_context=d, no_input=True)"
+          python -c "from cookiecutter.main import cookiecutter; import json; f=open('cookiecutter.json'); d=json.load(f); f.close(); d['kind']='server'; cookiecutter('.', extra_context=d, no_input=True)"
           cd myextension
           pip install --pre jupyterlab
           jupyter lab clean --all
@@ -322,3 +322,68 @@ jobs:
           jupyter server extension list
           jupyter server extension list 2>&1 | grep -ie "myextension.*OK"
           python -m jupyterlab.browser_check --no-chrome-test
+
+  theme:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Install node
+        uses: actions/setup-node@v1
+        with:
+          node-version: "12.x"
+      - name: Install Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: "3.7"
+          architecture: "x64"
+
+      - name: Setup pip cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.cache/pip
+          key: pip-3.7-${{ hashFiles('package.json') }}
+          restore-keys: |
+            pip-3.7-
+            pip-
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
+      - name: Setup yarn cache
+        uses: actions/cache@v2
+        id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            yarn-
+
+      - name: Install dependencies
+        run: |
+          python -m pip install cookiecutter check-manifest build
+
+      - name: Create pure frontend extension
+        run: |
+          set -eux
+          # Trick to use custom parameters
+          python -c "from cookiecutter.main import cookiecutter; import json; f=open('cookiecutter.json'); d=json.load(f); f.close(); d['kind']='theme'; cookiecutter('.', extra_context=d, no_input=True)"
+          pushd mytheme
+          pip install jupyterlab
+          jlpm install
+          pip install -e .
+          jupyter labextension develop . --overwrite
+          jupyter labextension list
+          jupyter labextension list 2>&1 | grep -ie "mytheme.*OK"
+          python -m jupyterlab.browser_check
+
+          jupyter labextension uninstall mytheme
+          pip uninstall -y mytheme jupyterlab
+
+          git init && git add .
+          check-manifest -v
+
+          popd
+          rm -rf mytheme

README.md

@@ -3,7 +3,10 @@
 ![Github Actions Status](https://github.com/jupyterlab/extension-cookiecutter-ts/workflows/CI/badge.svg)
 
 A [cookiecutter](https://github.com/audreyr/cookiecutter) template for creating
-a JupyterLab extension using TypeScript with optionally a server extension.
+a JupyterLab extension. Three kinds of extension are supported:
+- _frontend_: Pure frontend extension written in TypeScript.
+- _server_: Extension with frontend (in TypeScript) and backend (in Python) parts.
+- _theme_: Theme for JupyterLab (using CSS variables).
 
 > See also [extension-cookiecutter-js](https://github.com/jupyterlab/extension-cookiecutter-js)
 for an extension in CommonJS.

cookiecutter.json

@@ -1,11 +1,11 @@
 {
+  "kind": ["frontend", "server", "theme"],
   "author_name": "",
   "author_email": "",
-  "labextension_name": "myextension",
+  "labextension_name": "{% if cookiecutter.kind == 'theme' %}mytheme{% else %}myextension{% endif %}",
   "python_name": "{{ cookiecutter.labextension_name | replace('-', '_') }}",
   "project_short_description": "A JupyterLab extension.",
   "has_settings": "n",
-  "has_server_extension": "n",
   "has_binder": "n",
   "repository": "https://github.com/github_username/{{ cookiecutter.labextension_name }}",
   "_copy_without_render": [

hooks/post_gen_project.py

@@ -22,7 +22,16 @@ def remove_path(path: str) -> None:
     if not "{{ cookiecutter.has_settings }}".lower().startswith("y"):
         remove_path(PROJECT_DIRECTORY / "schema")
 
-    if not "{{ cookiecutter.has_server_extension }}".lower().startswith("y"):
+    if "{{ cookiecutter.kind }}".lower() == "theme":
+        for f in (
+            "style/index.js",
+            "style/base.css"
+        ):
+            remove_path(PROJECT_DIRECTORY / f)
+    else:
+        remove_path(PROJECT_DIRECTORY / "style/variable.css")
+
+    if not "{{ cookiecutter.kind }}".lower() == "server":
         for f in (
             "{{ cookiecutter.python_name }}/handlers.py",
             "src/handler.ts",

{{cookiecutter.python_name}}/.github/workflows/build.yml

@@ -52,7 +52,7 @@ jobs:
         jlpm
         jlpm run eslint:check
         python -m pip install .
-{% if cookiecutter.has_server_extension.lower().startswith('y') %}
+{% if cookiecutter.kind.lower() == 'server' %}
         jupyter server extension list 2>&1 | grep -ie "{{ cookiecutter.python_name }}.*OK"
 {% endif %}
         jupyter labextension list 2>&1 | grep -ie "{{ cookiecutter.labextension_name }}.*OK"

{{cookiecutter.python_name}}/MANIFEST.in

@@ -1,6 +1,6 @@
 include LICENSE
 include *.md
-include pyproject.toml{% if cookiecutter.has_server_extension == "y" %}
+include pyproject.toml{% if cookiecutter.kind == "server" %}
 recursive-include jupyter-config *.json{% endif %}
 
 include package.json

{{cookiecutter.python_name}}/README.md

@@ -7,7 +7,7 @@
 
 {{ cookiecutter.project_short_description }}
 
-{% if cookiecutter.has_server_extension.lower().startswith('y') %}
+{% if cookiecutter.kind.lower() == 'server' %}
 This extension is composed of a Python package named `{{ cookiecutter.python_name }}`
 for the server extension and a NPM package named `{{ cookiecutter.labextension_name }}`
 for the frontend extension.
@@ -33,7 +33,7 @@ To remove the extension, execute:
 pip uninstall {{ cookiecutter.python_name }}
 ```
 
-{% if cookiecutter.has_server_extension.lower().startswith('y') %}
+{% if cookiecutter.kind.lower() == 'server' %}
 ## Troubleshoot
 
 If you are seeing the frontend extension, but it is not working, check
@@ -67,7 +67,7 @@ The `jlpm` command is JupyterLab's pinned version of
 # Install package in development mode
 pip install -e .
 # Link your development version of the extension with JupyterLab
-jupyter labextension develop . --overwrite{% if cookiecutter.has_server_extension.lower().startswith('y') %}
+jupyter labextension develop . --overwrite{% if cookiecutter.kind.lower() == 'server' %}
 # Server extension must be manually installed in develop mode
 jupyter server extension enable {{ cookiecutter.python_name }}{% endif %}
 # Rebuild extension Typescript source after making changes
@@ -93,7 +93,7 @@ jupyter lab build --minimize=False
 
 ### Development uninstall
 
-```bash{% if cookiecutter.has_server_extension.lower().startswith('y') %}
+```bash{% if cookiecutter.kind.lower() == 'server' %}
 # Server extension must be manually disabled in develop mode
 jupyter server extension disable {{ cookiecutter.python_name }}{% endif %}
 pip uninstall {{ cookiecutter.python_name }}

{{cookiecutter.python_name}}/package.json

@@ -46,8 +46,9 @@
     "watch:labextension": "jupyter labextension watch ."
   },
   "dependencies": {
-    "@jupyterlab/application": "^3.1.0"{% if cookiecutter.has_settings.lower().startswith('y') %},
-    "@jupyterlab/settingregistry": "^3.1.0"{% endif %}{% if cookiecutter.has_server_extension.lower().startswith('y') %},
+    "@jupyterlab/application": "^3.1.0"{% if cookiecutter.kind.lower() == 'theme' %},
+    "@jupyterlab/apputils": "^3.1.0"{% endif %}{% if cookiecutter.has_settings.lower().startswith('y') %},
+    "@jupyterlab/settingregistry": "^3.1.0"{% endif %}{% if cookiecutter.kind.lower() == 'server' %},
     "@jupyterlab/coreutils": "^5.1.0",
     "@jupyterlab/services": "^6.1.0"
 {% endif %}
@@ -58,22 +59,22 @@
     "@typescript-eslint/parser": "^4.8.1",
     "eslint": "^7.14.0",
     "eslint-config-prettier": "^6.15.0",
-    "eslint-plugin-prettier": "^3.1.4", {% if cookiecutter.has_server_extension.lower().startswith('y') %}
-    "mkdirp": "^1.0.3", {% endif %}
+    "eslint-plugin-prettier": "^3.1.4",{% if cookiecutter.kind.lower() == 'server' %}
+    "mkdirp": "^1.0.3",{% endif %}
     "npm-run-all": "^4.1.5",
     "prettier": "^2.1.1",
     "rimraf": "^3.0.2",
     "typescript": "~4.1.3"
   },
   "sideEffects": [
-    "style/*.css",
+    "style/*.css"{% if cookiecutter.kind.lower() != 'theme' %},
     "style/index.js"
   ],
-  "styleModule": "style/index.js",
+  "styleModule": "style/index.js",{% else %}],{% endif %}
   "publishConfig": {
     "access": "public"
   },
-  "jupyterlab": { {% if cookiecutter.has_server_extension.lower().startswith('y') %}
+  "jupyterlab": { {% if cookiecutter.kind.lower() == 'server' %}
     "discovery": {
         "server": {
           "managers": [
@@ -83,10 +84,11 @@
             "name": "{{ cookiecutter.python_name }}"
           }
         }
-    }, {% endif %}
+    },{% endif %}
     "extension": true,
     "outputDir": "{{cookiecutter.python_name}}/labextension"{% if cookiecutter.has_settings.lower().startswith('y') %},
-    "schemaDir": "schema"{% endif %}
+    "schemaDir": "schema"{% endif %}{% if cookiecutter.kind.lower() == 'theme' %},
+    "themePath": "style/index.css"{% endif %}
   },
   "jupyter-releaser": {
     "hooks": {

{{cookiecutter.python_name}}/setup.py

@@ -16,15 +16,15 @@
 
 # Representative files that should exist after a successful build
 ensured_targets = [
-    str(lab_path / "package.json"),
-    str(lab_path / "static/style.js")
+    str(lab_path / "package.json"){% if cookiecutter.kind.lower() != "theme" %},
+    str(lab_path / "static/style.js"){% endif %}
 ]
 
 labext_name = "{{ cookiecutter.labextension_name }}"
 
 data_files_spec = [
     ("share/jupyter/labextensions/%s" % labext_name, str(lab_path.relative_to(HERE)), "**"),
-    ("share/jupyter/labextensions/%s" % labext_name, str("."), "install.json"),{% if cookiecutter.has_server_extension == "y" %}
+    ("share/jupyter/labextensions/%s" % labext_name, str("."), "install.json"),{% if cookiecutter.kind.lower() == "server" %}
     ("etc/jupyter/jupyter_server_config.d",
      "jupyter-config/server-config", "{{ cookiecutter.python_name }}.json"),
     # For backward compatibility with notebook server
@@ -55,7 +55,7 @@
     long_description=long_description,
     long_description_content_type="text/markdown",
     packages=setuptools.find_packages(),
-    install_requires=[{% if cookiecutter.has_server_extension == "y" %}
+    install_requires=[{% if cookiecutter.kind.lower() == "server" %}
         "jupyter_server>=1.6,<2"
     {% endif %}],
     zip_safe=False,

{{cookiecutter.python_name}}/src/index.ts

@@ -1,9 +1,11 @@
 import {
   JupyterFrontEnd,
   JupyterFrontEndPlugin
-} from '@jupyterlab/application';{% if cookiecutter.has_settings.lower().startswith('y') %}
+} from '@jupyterlab/application';{% if cookiecutter.kind.lower() == 'theme' %}
 
-import { ISettingRegistry } from '@jupyterlab/settingregistry';{% endif %}{% if cookiecutter.has_server_extension.lower().startswith('y') %}
+import { IThemeManager } from '@jupyterlab/apputils';{% endif %}{% if cookiecutter.has_settings.lower().startswith('y') %}
+
+import { ISettingRegistry } from '@jupyterlab/settingregistry';{% endif %}{% if cookiecutter.kind.lower() == 'server' %}
 
 import { requestAPI } from './handler';{% endif %}
 
@@ -12,10 +14,19 @@ import { requestAPI } from './handler';{% endif %}
  */
 const plugin: JupyterFrontEndPlugin<void> = {
   id: '{{ cookiecutter.labextension_name }}:plugin',
-  autoStart: true,{% if cookiecutter.has_settings.lower().startswith('y') %}
+  autoStart: true,{% if cookiecutter.kind.lower() == 'theme' %}
+  requires: [IThemeManager],{% endif %}{% if cookiecutter.has_settings.lower().startswith('y') %}
   optional: [ISettingRegistry],{% endif %}
-  activate: (app: JupyterFrontEnd{% if cookiecutter.has_settings.lower().startswith('y') %}, settingRegistry: ISettingRegistry | null{% endif %}) => {
-    console.log('JupyterLab extension {{ cookiecutter.labextension_name }} is activated!');{% if cookiecutter.has_settings.lower().startswith('y') %}
+  activate: (app: JupyterFrontEnd{% if cookiecutter.kind.lower() == 'theme' %}, manager: IThemeManager{% endif %}{% if cookiecutter.has_settings.lower().startswith('y') %}, settingRegistry: ISettingRegistry | null{% endif %}) => {
+    console.log('JupyterLab extension {{ cookiecutter.labextension_name }} is activated!');{% if cookiecutter.kind.lower() == 'theme' %}
+    const style = '{{ cookiecutter.labextension_name }}/index.css';
+
+    manager.register({
+      name: '{{ cookiecutter.labextension_name }}',
+      isLight: true,
+      load: () => manager.loadCSS(style),
+      unload: () => Promise.resolve(undefined)
+    });{% endif %}{% if cookiecutter.has_settings.lower().startswith('y') %}
 
     if (settingRegistry) {
       settingRegistry
@@ -26,7 +37,7 @@ const plugin: JupyterFrontEndPlugin<void> = {
         .catch(reason => {
           console.error('Failed to load settings for {{ cookiecutter.labextension_name }}.', reason);
         });
-    }{% endif %}{% if cookiecutter.has_server_extension.lower().startswith('y') %}
+    }{% endif %}{% if cookiecutter.kind.lower() == 'server' %}
 
     requestAPI<any>('get_example')
       .then(data => {

{{cookiecutter.python_name}}/style/index.css

@@ -1 +1,14 @@
+{% if cookiecutter.kind.lower() == 'theme' %}@import './variables.css';
+
+/* Set the default typography for monospace elements */
+tt,
+code,
+kbd,
+samp,
+pre {
+  font-family: var(--jp-code-font-family);
+  font-size: var(--jp-code-font-size);
+  line-height: var(--jp-code-line-height);
+}{% else %}
 @import url('base.css');
+{% endif %}