From 365998f4453508cbb14d2e217a2003ae4a92ba7b Mon Sep 17 00:00:00 2001
From: Guy Sartorelli <guy.sartorelli@signify.co.nz>
Date: Tue, 29 Jun 2021 11:23:58 +1200
Subject: [PATCH] ENH Add extension point for modifying readonly GridFields.

Developers may want to amend a gridfield (either by modifying its
components or amending the list) after it has been transformed to be
readonly.
One such modification may be replacing the GridFieldViewButton
with something else - because components are instantiated with the "new"
keyword this would be the only way to do that.
---
 src/Forms/GridField/GridField.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Forms/GridField/GridField.php b/src/Forms/GridField/GridField.php
index c3b0a2635..a89104026 100644
--- a/src/Forms/GridField/GridField.php
+++ b/src/Forms/GridField/GridField.php
@@ -272,6 +272,8 @@ class GridField extends FormField
             $copyConfig->addComponent(new GridFieldViewButton);
         }
 
+        $copy->extend('afterPerformReadonlyTransformation', $this);
+
         return $copy;
     }