A script to run commands in floating window on ie.

float

#!/bin/bash

# alt shebang to autoload deps
#!/usr/bin/env nix 
#! nix shell --file ``<nixpkgs>`` bash wmctrl ripgrep pstree --command bash

# This is a script to run programs as floating windows in i3 window manager.
# The passed command is run and any X windows it creates are moved to a 
# floating split container. (or you can pass a custom i3 mark)
#
# Deps: 
# 	requires wmctrl pstree ripgrep
# Usage: 
# 	float <command>
#
#		ex) open two terminals in a split floating container
# 	float 'alacritty & alacritty'
#
# 	ex) open windows in a named mark (creating if not found)
# 	MARK=mygroup float <command>

# for some reason xprop subprocess doesn't die on it's own
trap 'pkill --signal SIGTERM --parent $$' EXIT

MARK="${MARK:-$$}"
FOUND=
FIRST=

# listen for focus change
xprop -spy -root _NET_ACTIVE_WINDOW | while read DUMMY; do
	TREE1=$(pstree $$)
	TREE=$(echo "$TREE1" | rg -o '^[^\d]+0?(\d+)' -r "\$1")

	WINDOWS=$(wmctrl -lp | awk '{print $1, $3}')

	while read wid pid; do
		if [[ " $FOUND " =~ " $pid " ]]; then 
			continue
		fi
		FOUND="$FOUND $pid" # only catch once

		if grep -qx "$pid"; then
			ps --no-headers $pid 
			wmctrl -lp | grep $wid
			wmctrl -i -a "$wid" # if args in wrong order, silently does nothing (dumb)
			#sleep 0.2
				i3-msg move window to mark $MARK || (
					i3-msg mark $MARK
					i3-msg split horizontal
					i3-msg focus parent
					i3-msg floating enable
				)
		fi < <(echo "$TREE")

	done < <(echo "$WINDOWS") 
	#^ can't use pipe because then FOUND doesn't persist (subshell) 

done &

(
	bash -c "$@"
	wait
)