From 8388a21d2d254c62c250ac882f8727410a49faa4 Mon Sep 17 00:00:00 2001
From: Alessandro Rodi <coorasse@gmail.com>
Date: Fri, 23 Feb 2024 17:00:36 +0100
Subject: [PATCH] Trigger an event when adding a new node

---
 src/core/drive/morph_renderer.js | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/core/drive/morph_renderer.js b/src/core/drive/morph_renderer.js
index 2c5d14874..2ebe9021e 100644
--- a/src/core/drive/morph_renderer.js
+++ b/src/core/drive/morph_renderer.js
@@ -41,7 +41,18 @@ export class MorphRenderer extends PageRenderer {
   }
 
   #shouldAddElement = (node) => {
-    return !(node.id && node.hasAttribute("data-turbo-permanent") && document.getElementById(node.id))
+    if (node.id && node.hasAttribute("data-turbo-permanent") && document.getElementById(node.id)) {
+      return false;
+    } else {
+      const event = dispatch("turbo:before-add-element", {
+        cancelable: true,
+        target: node,
+        detail: {
+          newElement:  node
+        }
+      });
+      return !event.defaultPrevented;
+    }
   }
 
   #shouldMorphElement = (oldNode, newNode) => {