From c3def649bcf4a9e3051ccd8dfa5273d7c53bdc8a Mon Sep 17 00:00:00 2001
From: Gonk <chris@zink.tv>
Date: Sat, 29 Feb 2020 20:22:49 +0100
Subject: [PATCH] synchronized listeners to prevent crashs

---
 .../gpl/rpg/AndorsTrail/util/ListOfListeners.java  | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/AndorsTrail/src/com/gpl/rpg/AndorsTrail/util/ListOfListeners.java b/AndorsTrail/src/com/gpl/rpg/AndorsTrail/util/ListOfListeners.java
index 6a8e5b808..c07f586a5 100644
--- a/AndorsTrail/src/com/gpl/rpg/AndorsTrail/util/ListOfListeners.java
+++ b/AndorsTrail/src/com/gpl/rpg/AndorsTrail/util/ListOfListeners.java
@@ -8,7 +8,7 @@ import com.gpl.rpg.AndorsTrail.AndorsTrailApplication;
 public class ListOfListeners<T> {
 	private final ArrayList<WeakReference<T>> listeners = new ArrayList<WeakReference<T>>();
 
-	public final void add(T listener) {
+	public synchronized final void add(T listener) {
 		if (AndorsTrailApplication.DEVELOPMENT_VALIDATEDATA) {
 			for (WeakReference<T> ref : listeners) {
 				if (ref.get() == listener) {
@@ -18,7 +18,7 @@ public class ListOfListeners<T> {
 		}
 		listeners.add(new WeakReference<T>(listener));
 	}
-	public final void remove(T listenerToRemove) {
+	public synchronized final void remove(T listenerToRemove) {
 		for (int i = listeners.size()-1; i >= 0; --i) {
 			T listener = listeners.get(i).get();
 			if (listener == null || listener == listenerToRemove) {
@@ -26,32 +26,32 @@ public class ListOfListeners<T> {
 			}
 		}
 	}
-	public final void clear() {
+	public synchronized final void clear() {
 		listeners.clear();
 	}
 
-	protected final void callAllListeners(Function<T> e) {
+	protected synchronized final void callAllListeners(Function<T> e) {
 		for (int i = listeners.size()-1; i >= 0; --i) {
 			T listener = listeners.get(i).get();
 			if (listener == null) listeners.remove(i);
 			else e.call(listener);
 		}
 	}
-	protected final <Arg1> void callAllListeners(Function1<T, Arg1> e, Arg1 arg) {
+	protected synchronized final <Arg1> void callAllListeners(Function1<T, Arg1> e, Arg1 arg) {
 		for (int i = listeners.size()-1; i >= 0; --i) {
 			T listener = listeners.get(i).get();
 			if (listener == null) listeners.remove(i);
 			else e.call(listener, arg);
 		}
 	}
-	protected final <Arg1, Arg2> void callAllListeners(Function2<T, Arg1, Arg2> e, Arg1 arg1, Arg2 arg2) {
+	protected synchronized final <Arg1, Arg2> void callAllListeners(Function2<T, Arg1, Arg2> e, Arg1 arg1, Arg2 arg2) {
 		for (int i = listeners.size()-1; i >= 0; --i) {
 			T listener = listeners.get(i).get();
 			if (listener == null) listeners.remove(i);
 			else e.call(listener, arg1, arg2);
 		}
 	}
-	protected final <Arg1, Arg2, Arg3> void callAllListeners(Function3<T, Arg1, Arg2, Arg3> e, Arg1 arg1, Arg2 arg2, Arg3 arg3) {
+	protected synchronized final <Arg1, Arg2, Arg3> void callAllListeners(Function3<T, Arg1, Arg2, Arg3> e, Arg1 arg1, Arg2 arg2, Arg3 arg3) {
 		for (int i = listeners.size()-1; i >= 0; --i) {
 			T listener = listeners.get(i).get();
 			if (listener == null) listeners.remove(i);