# HG changeset patch
# User Raphaël Gomès <rgomes@octobus.net>
# Date 1657206195 -7200
#      Thu Jul 07 17:03:15 2022 +0200
# Node ID 5821be5c28669c8b65879277ee31402ef1f7fae0
# Parent  8b7a7c89a2afc98f7a877172921556446b43f997
web-ui: don't overwrite the clipboard with empty data

diff --git a/web-ui/src/lib/Graph.svelte b/web-ui/src/lib/Graph.svelte
--- a/web-ui/src/lib/Graph.svelte
+++ b/web-ui/src/lib/Graph.svelte
@@ -69,6 +69,9 @@
           },
         },
         onClick: (e, elements) => {
+          if (elements.length == 0) {
+            return;
+          }
           const nodes = elements
             .map((el) => {
               const datasetIndex = el.datasetIndex;
@@ -78,7 +81,7 @@
             })
             .join("+");
           if (navigator && navigator.clipboard && navigator.clipboard.writeText)
-            return navigator.clipboard.writeText(nodes);
+            navigator.clipboard.writeText(nodes);
         },
       },
     });