When integrated with Waybar, this script returns the currently selected Window followed by the total number of Windows on the current workspace.
As an example, the returned text below shows that the currently selected window is the first window on a workspace with two windows.
{“text”:“ 1:2 “,“tooltip”:“Current Window”,“class”:“unmuted”}
#!/bin/bash
ME="$(niri msg -j workspaces | jq ".[] | select(.is_focused == true ) | .id")"
NUM="$(niri msg -j windows | jq "[.[] | select(.workspace_id == $ME)] | length")"
LAYOUT="$(niri msg -j windows | jq ".[] | select(.is_focused == true ) | .layout")"
POS_IN_LAYOUT=$(echo $LAYOUT | jq ". | .pos_in_scrolling_layout")
FINAL=$(echo $POS_IN_LAYOUT | sed -E 's/^\[ (.+?),(.+)/\1/')
if [[ $NUM -gt 0 && $FINAL -gt 0 ]] then
TEXT=" "$FINAL":"$NUM
fi
echo '{"text":"'$TEXT' ","tooltip":"Current Window","class":"unmuted"}'