From 2562de76b78dab479b45e03340fcfa513dada770 Mon Sep 17 00:00:00 2001
From: SpecialX <47072643+wangxiner55@users.noreply.github.com>
Date: Wed, 24 Jun 2026 14:33:04 +0800
Subject: [PATCH] fix(exams): remove isolating to allow nested question blocks
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Root cause: questionBlock/groupBlock/sectionBlock had `isolating: true`,
which prevents ProseMirror operations (wrapIn, insertContentAt) from
inserting nodes inside these blocks. When users selected text inside a
composite question and clicked "填空/简答" to create a sub-question,
the new questionBlock was inserted OUTSIDE the composite block instead
of inside it, so buildQuestion couldn't detect it as a subQuestion.

Fix: remove `isolating: true` from all three block extensions. The
`defining: true` property is sufficient to maintain node boundaries
during normal editing operations.

This allows wrapInQuestion to work correctly inside composite questions,
creating properly nested sub-question blocks that are detected by
buildQuestion's recursive parsing.
---
 src/modules/exams/editor/extensions/group-block.tsx    | 1 -
 src/modules/exams/editor/extensions/question-block.tsx | 1 -
 src/modules/exams/editor/extensions/section-block.tsx  | 1 -
 3 files changed, 3 deletions(-)

diff --git a/src/modules/exams/editor/extensions/group-block.tsx b/src/modules/exams/editor/extensions/group-block.tsx
index 942562b..f6bd7b8 100644
--- a/src/modules/exams/editor/extensions/group-block.tsx
+++ b/src/modules/exams/editor/extensions/group-block.tsx
@@ -80,7 +80,6 @@ export const GroupBlock = Node.create({
   group: "block",
   content: "block+",
   defining: true,
-  isolating: true,
   addAttributes() {
     return {
       title: { default: "" },
diff --git a/src/modules/exams/editor/extensions/question-block.tsx b/src/modules/exams/editor/extensions/question-block.tsx
index c77b4de..9ab0ad3 100644
--- a/src/modules/exams/editor/extensions/question-block.tsx
+++ b/src/modules/exams/editor/extensions/question-block.tsx
@@ -64,7 +64,6 @@ export const QuestionBlock = Node.create({
   group: "block",
   content: "block+",
   defining: true,
-  isolating: true,
   addAttributes() {
     return {
       questionId: { default: "" },
diff --git a/src/modules/exams/editor/extensions/section-block.tsx b/src/modules/exams/editor/extensions/section-block.tsx
index 654cdc0..d11c413 100644
--- a/src/modules/exams/editor/extensions/section-block.tsx
+++ b/src/modules/exams/editor/extensions/section-block.tsx
@@ -86,7 +86,6 @@ export const SectionBlock = Node.create({
   group: "block",
   content: "block+",
   defining: true,
-  isolating: true,
   addAttributes() {
     return {
       title: { default: "" },