Show a widget only if condition is true

[gh0stzk]

Hello, I want to add a widget that shows a battery icon in a bar made with eww.

But that the informative icon is only shown if it is a laptop.

I already have the script to get the battery values, but how can I implement it to be functional only if the condition that the hardware uses a battery is met in the eww code.

It's possible?

This is the script baterry.sh

#!/usr/bin/env bash

bat=/sys/class/power_supply/BAT0/
per="$(cat "$bat/capacity")"

icon() {

[ $(cat "$bat/status") = Charging ] && echo "" && exit

if [ "$per" -gt "90" ]; then
	icon=""
elif [ "$per" -gt "80" ]; then
	icon=""
elif [ "$per" -gt "70" ]; then
	icon=""
elif [ "$per" -gt "60" ]; then
	icon=""
elif [ "$per" -gt "50" ]; then
	icon=""
elif [ "$per" -gt "40" ]; then
	icon=""
elif [ "$per" -gt "30" ]; then
	icon=""
elif [ "$per" -gt "20" ]; then
	icon=""
elif [ "$per" -gt "10" ]; then
	icon=""
	notify-send -u critical "Battery Low" "Connect Charger"
elif [ "$per" -gt "0" ]; then
	icon=""
	notify-send -u critical "Battery Low" "Connect Charger"
else
        echo  && exit
fi
echo "$icon"
}

percent() {
echo $per
}

[ "$1" = "icon" ] && icon && exit
[ "$1" = "percent" ] && percent && exit
exit

And this is the eww battery code.

;; Battery Widgets ;;
(defwidget bat []
	(box	:orientation "v"	
			:space-evenly "false"
	(label	:class "bat"		
			:halign "end"		
			:text battery	
			:tooltip "Battery: ${battery-cappacity}%")))
(defpoll battery			:interval "1s"	"scripts/battery icon")
(defpoll battery-cappacity	:interval "1s"	"scripts/battery percent")

[viandoxdev]

see #517 (comments)

Also, take a look at the eww documentation.