From 384af3a2b432a6676b4dc2e88c915c3149acc8cc Mon Sep 17 00:00:00 2001
From: Shiki <64834708+xshiki@users.noreply.github.com>
Date: Wed, 11 Dec 2024 16:05:08 +0100
Subject: [PATCH] Added set support for arrays

---
 ipywidgets_jsonschema/form.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/ipywidgets_jsonschema/form.py b/ipywidgets_jsonschema/form.py
index fdf4a9f..9d2de37 100644
--- a/ipywidgets_jsonschema/form.py
+++ b/ipywidgets_jsonschema/form.py
@@ -931,12 +931,19 @@ def _resetter():
         # Initially call the resetter
         _resetter()
 
+        def _getter():
+            result = [h.getter() for h in elements[:element_size]]
+            if schema.get("set", False):
+                if len(result) != len(set(result)):
+                    raise FormError("Array elements are not unique")
+            return result
+
         wrapped_vbox[0] = self._wrap_description(
             wrapped_vbox[0], schema.get("description", None)
         )
 
         return self.construct_element(
-            getter=lambda: [h.getter() for h in elements[:element_size]],
+            getter=_getter,
             setter=_setter,
             resetter=_resetter,
             widgets=wrapped_vbox,