1. Install Node 8.9.4+ (e.g. using node version manger)

2. Clone the repo, install dependencies, start the dev environment:

   git clone https://github.com/mozilla/Themer.git
   cd Themer
   npm install
   npm start
   

   This will start a webpack-dev-server instance at port 8080 and start a watcher that will rebuild the browser extension with every file change.

3. In Firefox 57 + open about:debugging and load the build/extension/manifest.json file.

4. Visit http://localhost:8080 to see the web-based theme editor - changes should be relayed through the temporarily installed add-on and alter the browser theme

Deploying a development release consists of pushing to the development branch on this repo. Production release process is TBD.

The script npm run release:dev in package.json takes care of the following:

• Set ADDON_URL and SITE_URL vars to point at mozilla.github.io/Themer

• Build the site

• Build & sign the add-on

• Copy the signed add-on into the site

• Deploy the site to Github Pages

Signing depends on WEB_EXT_API_KEY and WEB_EXT_API_SECRET environment variables being set for use by web-ext sign. Deployment depends on GH_TOKEN being set with a personal access token from GitHub. These are currently configured in CircleCI to support deployment after successful test runs.

• Links to docs and calls-to-action to learn & make more complex themes

• Make editor local only to extension? Only show preview on web?

• Social sharing buttons

• Pre-made curated themes (via link?)

• Tweak build & release for prod where add-on & site will be at different URLs and neither on github

• Further reading for themes
  • Other addons for managing & creating themes
    • https://addons.mozilla.org/en-US/firefox/collections/ntim/theming-extensions/
  • An example of a more complex dynamically changing theme
    • https://github.com/mdn/webextensions-examples/tree/master/dynamic-theme
  • Dynamic theme with colors based on favicon
    • https://addons.mozilla.org/en-US/firefox/addon/vivaldifox/
  • Theme API
    • https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/theme
  • Hacks post on Theme API
    • https://hacks.mozilla.org/2017/12/using-the-new-theming-api-in-firefox/
  • theme.getCurrent()
    • Useful for other webextensions to match current theme colors with their own UIs
    • Maybe pre-load web page with current theme?
    • https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/theme/getCurrent