From ae3cb5c0431928e8f0ebd36fdc96a5a4961aeb63 Mon Sep 17 00:00:00 2001
From: Josh Tynjala <joshtynjala@bowlerhat.dev>
Date: Fri, 27 May 2022 12:38:12 -0700
Subject: [PATCH] MessageDispatcher: fix Callback class not working properly on
 OpenFL's flash/air targets

On those targetts, no exceptions are thrown until the function is called, but that's too late because the length was already incorrectly detected as 0
---
 .../framework/impl/MessageDispatcher.hx       | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/robotlegs/bender/framework/impl/MessageDispatcher.hx b/src/robotlegs/bender/framework/impl/MessageDispatcher.hx
index fe295d6..f81afe6 100644
--- a/src/robotlegs/bender/framework/impl/MessageDispatcher.hx
+++ b/src/robotlegs/bender/framework/impl/MessageDispatcher.hx
@@ -178,6 +178,26 @@ class Callback {
 	public var length:Int = 0;
 
 	public function new(value:Dynamic) {
+		#if flash
+		length = Reflect.field(value, "length");
+		call = (v1:Dynamic, v2:Dynamic) -> {
+			if (length == 0) {
+				var func0:Void->Void = value;
+				func0();
+			}
+			else if (length == 1) {
+				var func1:Dynamic->Void = value;
+				func1(v1);
+			}
+			else if (length == 2) {
+				var func2:Dynamic->Dynamic->Void = value;
+				func2(v1, v2);
+			}
+			else {
+				throw "Bad handler signature";
+			}
+		}
+		#else
 		var func0:Void->Void = null;
 		try {
 			func0 = value;
@@ -207,5 +227,6 @@ class Callback {
 				}
 			}
 		}
+		#end
 	}
 }