feat: add keyboard navigation to combobox and select fields on web

2026-01-30 22:52:07 +07:00
parent 025a68c3a4
commit ea33d1980f
8 changed files with 320 additions and 22 deletions
@@ -0,0 +1,19 @@
+export function getNextActiveIndex(args: {
+  currentIndex: number;
+  itemCount: number;
+  key: "ArrowDown" | "ArrowUp";
+}): number {
+  const { currentIndex, itemCount, key } = args;
+
+  if (itemCount <= 0) return -1;
+
+  if (currentIndex < 0) {
+    return key === "ArrowDown" ? 0 : itemCount - 1;
+  }
+
+  const normalizedCurrent = currentIndex % itemCount;
+  return key === "ArrowDown"
+    ? (normalizedCurrent + 1) % itemCount
+    : (normalizedCurrent - 1 + itemCount) % itemCount;
+}
+