Present a menu to select and apply a screen layout script

choose-layout.sh

#!/bin/bash

# present a menu to select and apply a screen layout script
# requires "arandr" and "dialog" package

# to run with hotkeys, use:
# lxterminal -e choose-layout.sh

# 2018-11-27 L
# from https://gist.github.com/luismrsilva/07b280d990ae26d038310219c1e1a742
# (c) 2018 luismrsilva

LAYOUTS_DIR="$HOME/.screenlayout"

########
MENU="Choose a screen layout script"
HEIGHT=18
WIDTH=50
CHOICE_HEIGHT=10

OPTIONS="1 arandr 2 lxrandr"
OPTIONS_ARR[1]="arandr"
OPTIONS_ARR[2]="lxrandr"
OPTION_COUNT=2

for file in `find $LAYOUTS_DIR -type f -iname "*.sh"`
do
	OPTION_COUNT=$((OPTION_COUNT+1))
	#echo $file
	LAYOUT_NAME=$(basename "$file")
	OPTIONS="$OPTIONS $OPTION_COUNT $LAYOUT_NAME"
	OPTIONS_ARR[$OPTION_COUNT]="$LAYOUT_NAME"
done

function show_dialog(){
	dialog --clear \
		--title "Screen Layout" \
		--menu "$MENU" $HEIGHT $WIDTH $CHOICE_HEIGHT \
		"$@" \
		2>&1 > /dev/tty
}

OPTION=$(show_dialog $OPTIONS)

echo $OPTION
TO_RUN="${OPTIONS_ARR[$OPTION]}"
echo $TO_RUN

if [[ $TO_RUN =~ ^.*sh$ ]]; then
	echo "OK! (script)"
	echo "$LAYOUTS_DIR/$TO_RUN"
	"$LAYOUTS_DIR/$TO_RUN"
elif [[ $TO_RUN =~ ^arandr$|lxrandr$  ]]; then
	echo "OK! (absolute)"
	"$TO_RUN"
else
	echo "NOK"
	exit -1
fi