fix: quote block flashes in ai chat page when generating answer (#7553)

frontend/appflowy_flutter/lib/plugins/ai_chat/presentation/message/ai_markdown_text.dart

@@ -64,8 +64,12 @@ class _AppFlowyEditorMarkdownState extends State<_AppFlowyEditorMarkdown> {
     super.didUpdateWidget(oldWidget);
 
     if (oldWidget.markdown != widget.markdown) {
-      editorState.dispose();
-      editorState = _parseMarkdown(widget.markdown.trim());
+      final editorState = _parseMarkdown(
+        widget.markdown.trim(),
+        previousDocument: this.editorState.document,
+      );
+      this.editorState.dispose();
+      this.editorState = editorState;
       scrollController.dispose();
       scrollController = EditorScrollController(
         editorState: editorState,
@@ -129,8 +133,30 @@ class _AppFlowyEditorMarkdownState extends State<_AppFlowyEditorMarkdown> {
     );
   }
 
-  EditorState _parseMarkdown(String markdown) {
+  EditorState _parseMarkdown(
+    String markdown, {
+    Document? previousDocument,
+  }) {
+    // merge the nodes from the previous document with the new document to keep the same node ids
     final document = customMarkdownToDocument(markdown);
+    final documentIterator = NodeIterator(
+      document: document,
+      startNode: document.root,
+    );
+    if (previousDocument != null) {
+      final previousDocumentIterator = NodeIterator(
+        document: previousDocument,
+        startNode: previousDocument.root,
+      );
+      while (
+          documentIterator.moveNext() && previousDocumentIterator.moveNext()) {
+        final currentNode = documentIterator.current;
+        final previousNode = previousDocumentIterator.current;
+        if (currentNode.path.equals(previousNode.path)) {
+          currentNode.id = previousNode.id;
+        }
+      }
+    }
     final editorState = EditorState(document: document);
     return editorState;
   }

frontend/appflowy_flutter/lib/plugins/document/presentation/editor_plugins/quote/quote_block_component.dart

@@ -5,6 +5,9 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:universal_platform/universal_platform.dart';
 
+/// In memory cache of the quote block height to avoid flashing when the quote block is updated.
+Map<String, double> _quoteBlockHeightCache = {};
+
 typedef QuoteBlockIconBuilder = Widget Function(
   BuildContext context,
   Node node,
@@ -115,7 +118,9 @@ class _QuoteBlockComponentWidgetState extends State<QuoteBlockComponentWidget>
   @override
   Node get node => widget.node;
 
-  ValueNotifier<double> quoteBlockHeightNotifier = ValueNotifier(0);
+  late ValueNotifier<double> quoteBlockHeightNotifier = ValueNotifier(
+    _quoteBlockHeightCache[node.id] ?? 0,
+  );
 
   StreamSubscription<EditorTransactionValue>? _transactionSubscription;
 
@@ -266,17 +271,19 @@ class _QuoteBlockComponentWidgetState extends State<QuoteBlockComponentWidget>
   void _updateQuoteBlockHeight() {
     WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
       final renderObject = layoutBuilderKey.currentContext?.findRenderObject();
+      double height = _quoteBlockHeightCache[node.id] ?? 0;
       if (renderObject != null && renderObject is RenderBox) {
         if (UniversalPlatform.isMobile) {
-          quoteBlockHeightNotifier.value =
-              renderObject.size.height - padding.top;
+          height = renderObject.size.height - padding.top;
         } else {
-          quoteBlockHeightNotifier.value =
-              renderObject.size.height - padding.top * 2;
+          height = renderObject.size.height - padding.top * 2;
         }
       } else {
-        quoteBlockHeightNotifier.value = 0;
+        height = 0;
       }
+
+      quoteBlockHeightNotifier.value = height;
+      _quoteBlockHeightCache[node.id] = height;
     });
   }
 }

frontend/appflowy_flutter/pubspec.lock

@@ -90,8 +90,8 @@ packages:
     dependency: "direct main"
     description:
       path: "."
-      ref: ec7350d
-      resolved-ref: ec7350da7c298639c85e88229033da0c8aae8578
+      ref: "5070212"
+      resolved-ref: "5070212ee0f02182a8acdd760b4d7b42264baec4"
       url: "https://github.com/AppFlowy-IO/appflowy-editor.git"
     source: git
     version: "5.1.0"

frontend/appflowy_flutter/pubspec.yaml

@@ -180,7 +180,7 @@ dependency_overrides:
   appflowy_editor:
     git:
       url: https://github.com/AppFlowy-IO/appflowy-editor.git
-      ref: "ec7350d"
+      ref: "5070212"
 
   appflowy_editor_plugins:
     git: