From 120668fe5f4e6df892b697572aed16dabded9aa7 Mon Sep 17 00:00:00 2001
From: Matthias Hochsteger <mhochsteger@cerbsim.com>
Date: Tue, 15 Oct 2024 17:15:27 +0200
Subject: [PATCH] Fix event listeners in dev mode

---
 webgpu.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/webgpu.py b/webgpu.py
index 2184f5e..9054278 100644
--- a/webgpu.py
+++ b/webgpu.py
@@ -100,6 +100,12 @@ async def main(canvas=None, shader_url="./shader.wgsl"):
     if canvas is None:
         canvas = document.getElementById("canvas")
 
+    # cloning and replacing the canvas removes all old event listeners
+    new_canvas = canvas.cloneNode(True)
+    canvas.parentNode.replaceChild(new_canvas, canvas)
+    canvas = new_canvas
+    del new_canvas
+
     context = canvas.getContext("webgpu")
     context.configure(
         to_js(