feat: added dbus handler to update current player

[savely-krasovsky]

It allows to send script a signal to shift current player after playerctld shift command.

Example of my config with it:

  "custom/media": {
    "format": "{icon} {}",
    "format-icons": {
      "firefox": "<span foreground=\"#ff6629\"></span>",
      "chromium": "<span foreground=\"#4688f4\"></span>",
      "tdesktop": "<span foreground=\"#28a9eb\"></span>",
      "spotify": "<span foreground=\"#1d8954\"></span>",
      "vlc": "<span foreground=\"#e76a00\">󰕼</span>"
    },
    "return-type": "json",
    "max-length": 60,
    "escape": true,
    "exec": "$HOME/.config/waybar/scripts/mediaplayer.py 2> /dev/null",
    "on-click": "playerctl play-pause",
    "on-click-right": "playerctld shift; dbus-send --type=signal / org.waybar.Player.Shift",
    "on-scroll-up": "playerctl next",
    "on-scroll-down": "playerctl previous"
  }

style.css:

#custom-media {
	background: #404040;
	padding: 0 .7em;
}
#custom-media.custom-firefox {
	color: #febf37;
}
#custom-media.custom-chromium {
	color: #91b0e8;
}
#custom-media.custom-tdesktop {
	color: #b3dae9;
}
#custom-media.custom-spotify {
	color: #66DC69;
}
#custom-media.custom-vlc {
	color: #febf37;
}

Kooha-2023-05-05-21-41-42.webm