Update system-menu stuff

system-menu/system-menu.sh

@@ -1,20 +1,22 @@
 #!/usr/bin/env zsh
 
+# Format: label action condition
+local entries=('Select system sound output' 'select-sound-output.sh' 'true'
+               'Configure USB device access' 'usbguard-menu.py' 'pgrep usbguard-daemon'
+               'Power settings (restart and shutdown)' 'system-power-menu.sh' 'true')
+
+local fuzzel_input=""
+declare -A entry_map
+for ((i = 1; i <= ${#entries}; i+=3)); do
+    if eval "${entries[${i} + 2]}" >/dev/null 2>&1; then
+        entry_map["${entries[${i}]}"]="${entries[${i} + 1]}"
+        fuzzel_input+="${entries[${i}]}\n"
+    fi
+done
+
 local scripts_dir="$(dirname "$(realpath "${0}")")"
-choice="$(fuzzel --index -d <<'EOF'
-Select system sound output
-Power settings (restart and shutdown)
-EOF
-)"
+choice="$(echo -n "${fuzzel_input}" | fuzzel -d)"
 
 (( ${?} != 0 )) && exit
 
-echo $choice
-case "${choice}" in
-    0)
-        "${scripts_dir}/select-sound-output.sh"
-        ;;
-    1)
-        "${scripts_dir}/system-power-menu.sh"
-        ;;
-esac
+eval "${scripts_dir}/${entry_map["${choice}"]}"