From 184a63cf09b89a43aa0ce75cd87280743b0df587 Mon Sep 17 00:00:00 2001
From: Aaron Dodson <adodson@google.com>
Date: Fri, 17 Jan 2025 10:33:00 -0800
Subject: [PATCH] fix: Fix bug that prevented keyboard navigation of color
 swatches.

---
 plugins/field-colour/src/field_colour.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/plugins/field-colour/src/field_colour.ts b/plugins/field-colour/src/field_colour.ts
index dc5c88dfe..0e05fbb5c 100644
--- a/plugins/field-colour/src/field_colour.ts
+++ b/plugins/field-colour/src/field_colour.ts
@@ -475,7 +475,7 @@ export class FieldColour extends Blockly.Field<string> {
    * @param dy Change of y.
    */
   private moveHighlightBy(dx: number, dy: number) {
-    if (!this.highlightedIndex) {
+    if (this.highlightedIndex === null) {
       return;
     }
 
@@ -564,7 +564,7 @@ export class FieldColour extends Blockly.Field<string> {
    * @returns Highlighted item (null if none).
    */
   private getHighlighted(): HTMLElement | null {
-    if (!this.highlightedIndex) {
+    if (this.highlightedIndex === null) {
       return null;
     }