Browser extension that adds keyboard control to the web version of Google / YouTube Music

I wanted to control background playback of Google / YouTube Music without switching tabs. That is all :-)

• works in Firefox and Chromium-based browsers
• keyboard-based playback control
  • toggle playback

    default: Ctrl+Shift+8, visual hint: *
    windows: Alt+Shift+8

  • previous song

    default: Ctrl+Shift+9, visual hint: (
    windows: Alt+Shift+9

  • next song:

    default: Ctrl+Shift+0, visual hint: )
    windows: Alt+Shift+0

• option to customize default shortcuts
• toolbar button
  • regular click toggles playback
  • context-click shows menu with other playback controls
• open and pin Google Music if it is not open yet
• try to build a new playlist when one hasn't been loaded yet
• support for autoplay of bookmarks with &autoplay=true parameter

Firefox	Chrome / Chromium

1. Open about:addons → Google / YouTube Music Hotkeys_ → Preferences
   • ..or just right-click the Browser Action:

     

2. Customize key bindings to your liking:
   • Supported values are listed here. Changes are saved automatically.

     

   • The shortcut may be specified as one of the following media keys: MediaPlayPause, MediaPrevTrack, MediaNextTrack

     

   • Keep in mind that some shortcuts can be intercepted by regular desktop apps running on your system. For example, on MS Windows Ctrl+Shift+0 is hijacked by system itself – see issue #3. If something does not work, try a different shortcut.
   • Customization works in Firefox 60 or later. If you are using an older version please see issue #1 before reporting a new bug.
   • Firefox does not provide API for setting Global shortcuts (that work when browser window is not focused) yet: Bug 1411795 - Add global keyboard shortcut support to commands API.
3. That is all!

Chromium-based browsers provide global UI for managing shortcuts of all extensions.

1. Open chrome://extensions/configureCommands
2. Customize key bindings to your liking
3. You can optionally switch shortcut scope to Global:

   
   Global shortcuts should work even when Chrome isn’t ‘in focus’.
   Keep in mind that Global shortcuts can interfere with regular desktop app shortcuts.

4. That is all!

npm install
npm run build
npm run firefox

Play_music_triangle.png from https://commons.wikimedia.org/wiki/File:Play_music_triangle.svg

webextensions-lib-shortcut-customize-ui is licensed under MIT

The add-on itself is released under CC0: to the extent possible under law, the author has waived all copyright and related or neighboring rights to this work, effectively placing it in the public domain.