From 83da698aa4d8e1ba8ed95b5cfb74696cc7b7fbac Mon Sep 17 00:00:00 2001
From: moklick <info@moritzklack.com>
Date: Sun, 14 Mar 2021 15:32:17 +0100
Subject: [PATCH] fix(onEdgeUpdate): check if handle is target or source by
 classname fixes #982

---
 src/components/Handle/handler.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/components/Handle/handler.ts b/src/components/Handle/handler.ts
index 63000f23..5b589b29 100644
--- a/src/components/Handle/handler.ts
+++ b/src/components/Handle/handler.ts
@@ -98,12 +98,14 @@ export function onMouseDown(
   onConnectEnd?: OnConnectEndFunc
 ): void {
   const reactFlowNode = (event.target as Element).closest('.react-flow');
+  const elementBelow = document.elementFromPoint(event.clientX, event.clientY);
+  const elementBelowIsTarget = elementBelow?.classList.contains('target') || false;
 
   if (!reactFlowNode) {
     return;
   }
 
-  const handleType = isTarget ? 'target' : 'source';
+  const handleType = elementBelowIsTarget ? 'target' : 'source';
   const containerBounds = reactFlowNode.getBoundingClientRect();
   let recentHoveredHandle: Element;