util.events: event handlers can now return a result, which also interrupts further handling of the event

1 files changed, 4 insertions, 2 deletions

diff --git a/util/events.lua b/util/events.lua
index b1f3811c..704d31a4 100644
--- a/util/events.lua
+++ b/util/events.lua
@@ -53,7 +53,8 @@ function new()
 		if not h then h = {}; handlers[event] = h; end

 		local dispatcher = function(data)

 			for _, handler in ipairs(h) do

-				handler(data);

+				local ret = handler(data);

+				if ret ~= nil then return ret; end

 			end

 		end;

 		dispatchers[event] = dispatcher;

@@ -66,7 +67,8 @@ function new()
 		local h = handlers[event];

 		if h then

 			for _, handler in ipairs(h) do

-				handler(data);

+				local ret = handler(data);

+				if ret ~= nil then return ret; end

 			end

 		end

 	end;