fix: stabilize question custom textarea resizing (#1614)

* fix: stabilize question custom textarea resizing * fix: preserve custom question answer state --------- Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>
2026-06-13 00:28:42 +03:00
parent 8fbaa5df9c
commit 3bbd42587e
3 changed files with 123 additions and 32 deletions
@@ -0,0 +1,18 @@
+const QUESTION_TEXTAREA_LINE_HEIGHT = 20;
+const QUESTION_TEXTAREA_MIN_LINES = 2;
+const QUESTION_TEXTAREA_MAX_LINES = 10;
+
+export const QUESTION_CUSTOM_TEXTAREA_MIN_HEIGHT = QUESTION_TEXTAREA_LINE_HEIGHT * QUESTION_TEXTAREA_MIN_LINES;
+
+export function getQuestionCustomTextareaHeight({
+  scrollHeight,
+  currentHeight,
+}: {
+  scrollHeight: number;
+  currentHeight: number | null | undefined;
+}): number | null {
+  const maxHeight = QUESTION_TEXTAREA_LINE_HEIGHT * QUESTION_TEXTAREA_MAX_LINES;
+  const nextHeight = Math.min(Math.max(scrollHeight, QUESTION_CUSTOM_TEXTAREA_MIN_HEIGHT), maxHeight);
+
+  return currentHeight === nextHeight ? null : nextHeight;
+}