i3,polybar: Add bind and make calendar toggleable

.config/i3/config

@@ -204,6 +204,7 @@ for_window [class="^$TERMINAL-256color$" title="^polybar-datetime-calendar$"] \
 	border pixel 3,     \
 	resize set 378 300, \
 	move position 1411 32
+bindsym $mod+c exec ~/.config/polybar/scripts/calendar.sh -t &
 
 # screenshots
 bindsym --release Print exec gnome-screenshot -i

.config/polybar/launch.sh

@@ -3,13 +3,12 @@
 XDG_CONF="${XDG_CONFIG_HOME:-$HOME/.config}"
 BASE_DIR="$XDG_CONF/polybar"
 
-calendar_exec="st -A 0.45 -t polybar-datetime-calendar \"$BASE_DIR/scripts/calendar.sh\" &"
 declare -A module_flags
 module_flags=(
 	[battery]="$BASE_DIR/scripts/battery.sh"
 	[bluetooth]="$BASE_DIR/scripts/bluetooth.sh"
 	[bluetooth_click_left]="$BASE_DIR/scripts/bluetooth.sh --toggle &"
-	[datetime]="%{A1:$calendar_exec:} %date% - %time% %{A}"
+	[datetime]="%{A1:$BASE_DIR/scripts/calendar.sh -t &:} %date% - %time% %{A}"
 	[media]="$BASE_DIR/scripts/media.sh"
 	[powermenu]="%{A1:$XDG_CONF/rofi/powermenu.sh &:}%{T2}...%{T-}%{A}"
 	[vpn]="$BASE_DIR/scripts/vpn.sh"

.config/polybar/scripts/calendar.sh

@@ -25,6 +25,13 @@ if [[ $# -eq 0 ]]; then
 	# Call fzf
 	cal -wm | fzf "${FZF_ARGS[@]}"
 	exit 0
+elif [[ $1 = "-t" ]]; then
+	TITLE=polybar-datetime-calendar
+
+	# Kill and exit if already running to achieve a toggle.
+	! pkill -f "$TITLE" || exit 0
+
+	exec st -A 0.45 -t "$TITLE" "$0"
 else
 	# Backend