X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=altoslib%2FAltosPreferences.java;h=392497ef6909de1324a26d62d47db3aba8b1624e;hb=d029acad6a992be9b7b4498e70605f8a1e1a4ef6;hp=47196d6e70b89342ef3f876207bef574bcb941f4;hpb=c058ec2d6070458a0b7d3ef56041e985412ee565;p=fw%2Faltos

diff --git a/altoslib/AltosPreferences.java b/altoslib/AltosPreferences.java
index 47196d6e..392497ef 100644
--- a/altoslib/AltosPreferences.java
+++ b/altoslib/AltosPreferences.java
@@ -15,7 +15,7 @@
  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  */
 
-package org.altusmetrum.AltosLib;
+package org.altusmetrum.altoslib_1;
 
 import java.io.*;
 import java.util.*;
@@ -367,6 +367,8 @@ public class AltosPreferences {
 		set_common_frequencies(new_frequencies);
 	}
 
+	static LinkedList<AltosUnitsListener> units_listeners;
+
 	public static boolean imperial_units() {
 		synchronized(backend) {
 			return AltosConvert.imperial_units;
@@ -379,5 +381,24 @@ public class AltosPreferences {
 			backend.putBoolean(unitsPreference, imperial_units);
 			flush_preferences();
 		}
+		if (units_listeners != null) {
+			for (AltosUnitsListener l : units_listeners) {
+				l.units_changed(imperial_units);
+			}
+		}
+	}
+
+	public static void register_units_listener(AltosUnitsListener l) {
+		synchronized(backend) {
+			if (units_listeners == null)
+				units_listeners = new LinkedList<AltosUnitsListener>();
+			units_listeners.add(l);
+		}
+	}
+
+	public static void unregister_units_listener(AltosUnitsListener l) {
+		synchronized(backend) {
+			units_listeners.remove(l);
+		}
 	}
 }