+
+ static LinkedList<AltosMapTypeListener> map_type_listeners;
+
+ public static void set_map_type(int map_type) {
+ synchronized(backend) {
+ AltosPreferences.map_type = map_type;
+ backend.putInt(mapTypePreference, map_type);
+ flush_preferences();
+ }
+ if (map_type_listeners != null) {
+ for (AltosMapTypeListener l : map_type_listeners) {
+ l.map_type_changed(map_type);
+ }
+ }
+ }
+
+ public static int map_type() {
+ synchronized(backend) {
+ return map_type;
+ }
+ }
+
+ public static void register_map_type_listener(AltosMapTypeListener l) {
+ synchronized(backend) {
+ if (map_type_listeners == null)
+ map_type_listeners = new LinkedList<AltosMapTypeListener>();
+ map_type_listeners.add(l);
+ }
+ }
+
+ public static void unregister_map_type_listener(AltosMapTypeListener l) {
+ synchronized(backend) {
+ map_type_listeners.remove(l);
+ }
+ }