From 8bcd3567df7c49523638f0b935ecd09b1acad45d Mon Sep 17 00:00:00 2001
From: Fawn <fangrui_tong@brown.edu>
Date: Thu, 13 Jun 2019 18:07:35 -0400
Subject: cannot create the same link twice

---
 src/client/documents/Documents.ts | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/client/documents/Documents.ts')

diff --git a/src/client/documents/Documents.ts b/src/client/documents/Documents.ts
index 9517cbbda..9cb41aecc 100644
--- a/src/client/documents/Documents.ts
+++ b/src/client/documents/Documents.ts
@@ -86,6 +86,7 @@ const delegateKeys = ["x", "y", "width", "height", "panX", "panY"];
 
 export namespace DocUtils {
     export function MakeLink(source: Doc, target: Doc) {
+        if (LinkManager.Instance.doesLinkExist(source, target)) return;
         // let protoSrc = source.proto ? source.proto : source;
         // let protoTarg = target.proto ? target.proto : target;
         UndoManager.RunInBatch(() => {
-- 
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