icecast configuration menu style

src/freedombone-app-icecast

@@ -401,32 +401,28 @@ function icecast_set_maximum_streams {
 }
 
 function configure_interactive_icecast {
+    W=(1 $"Import stream files from directory"
+       2 $"Import stream files from USB drive"
+       3 $"Format a USB drive for stream file storage"
+       4 $"Export stream files to USB drive"
+       5 $"Manually edit playlist"
+       6 $"Enable login for stream visitors"
+       7 $"Change password for stream visitors"
+       8 $"Re-scan playlist"
+       9 $"Restart stream"
+       10 $"Set Stream Name/Description/Genre"
+       11 $"Set maximum number of clients/streams")
+
     while true
     do
-        data=$(mktemp 2>/dev/null)
-        dialog --backtitle $"Freedombone Control Panel" \
-               --title $"Icecast" \
-               --radiolist $"Choose an operation:" 19 70 12 \
-               1 $"Import stream files from directory" off \
-               2 $"Import stream files from USB drive" off \
-               3 $"Format a USB drive for stream file storage" off \
-               4 $"Export stream files to USB drive" off \
-               5 $"Manually edit playlist" off \
-               6 $"Enable login for stream visitors" off \
-               7 $"Change password for stream visitors" off \
-               8 $"Re-scan playlist" off \
-               9 $"Restart stream" off \
-               10 $"Set Stream Name/Description/Genre" off \
-               11 $"Set maximum number of clients/streams" off \
-               12 $"Exit" on 2> "$data"
-        sel=$?
-        case $sel in
-            1) rm -f "$data"
-               break;;
-            255) rm -f "$data"
-                 break;;
-        esac
-        case $(cat "$data") in
+        # shellcheck disable=SC2068
+        selection=$(dialog --backtitle $"Freedombone Administrator Control Panel" --title $"Icecast" --menu $"Choose an operation, or ESC to exit:" 20 60 11 "${W[@]}" 3>&2 2>&1 1>&3)
+
+        if [ ! "$selection" ]; then
+            break
+        fi
+
+        case $selection in
             1) icecast_import_from_directory;;
             2) icecast_import_from_usb;;
             3) icecast_format_drive;;
@@ -443,10 +439,7 @@ function configure_interactive_icecast {
                start_icecast;;
             10) icecast_set_stream_name;;
             11) icecast_set_maximum_streams;;
-            12) rm -f "$data"
-                break;;
         esac
-        rm -f "$data"
     done
 }