fixup! Add text selection mixin

core/lib/utils/html/html_utils.dart

@@ -52,6 +52,24 @@ class HtmlUtils {
     script: '''
       let lastSelectedText = '';
 
+      const sendSelectionChangeMessage = (data) => {
+        // When iframe
+        if (window.parent) {
+          window.parent.postMessage(
+            JSON.stringify({
+              ...data,
+              name: 'onSelectionChange',
+            }),
+            "*"
+          )
+        }
+
+        // When WebView
+        if (window.flutter_inappwebview) {
+          window.flutter_inappwebview.callHandler('onSelectionChange', data);
+        }
+      }
+
       document.addEventListener('selectionchange', function() {
         const selection = window.getSelection();
         const selectedText = selection ? selection.toString().trim() : '';
@@ -62,33 +80,14 @@ class HtmlUtils {
         lastSelectedText = selectedText;
 
         if (selectedText.length > 0 && selection.rangeCount > 0) {
-          const range = selection.getRangeAt(0);
-          const rects = range.getClientRects();
+          try {
+            const range = selection.getRangeAt(0);
+            const rects = range.getClientRects();
 
-          if (rects.length > 0) {
-            const rect = rects[rects.length - 1];
+            if (rects.length > 0) {
+              const rect = rects[rects.length - 1];
 
-            // When iframe
-            if (window.parent) {
-              window.parent.postMessage(
-                JSON.stringify({
-                  name: 'onSelectionChange',
-                  hasSelection: true,
-                  selectedText: selectedText,
-                  coordinates: {
-                    x: rect.right,
-                    y: rect.bottom,
-                    width: rect.width,
-                    height: rect.height
-                  }
-                }),
-                "*"
-              )
-            }
-
-            // When WebView
-            if (window.flutter_inappwebview) {
-              window.flutter_inappwebview.callHandler('onSelectionChange', {
+              sendSelectionChangeMessage({
                 hasSelection: true,
                 selectedText: selectedText,
                 coordinates: {
@@ -97,27 +96,17 @@ class HtmlUtils {
                   width: rect.width,
                   height: rect.height
                 }
-              });
+              })
             }
+          } catch {
+            sendSelectionChangeMessage({
+              hasSelection: false
+            })
           }
         } else {
-          // When iframe
-          if (window.parent) {
-            window.parent.postMessage(
-              JSON.stringify({
-                name: 'onSelectionChange',
-                hasSelection: false
-              }),
-              "*"
-            )
-          }
-
-          // When WebView
-          if (window.flutter_inappwebview) {
-            window.flutter_inappwebview.callHandler('onSelectionChange', {
-              hasSelection: false
-            });
-          }
+          sendSelectionChangeMessage({
+            hasSelection: false
+          })
         }
       });''',
     name: 'onSelectionChange');

lib/features/composer/presentation/widgets/mixins/text_selection_mixin.dart

@@ -1,5 +1,7 @@
 import 'package:flutter/material.dart';
 
+typedef OnTextSelectionChanged = Function(TextSelectionData?);
+
 class TextSelectionData {
   final bool hasSelection;
   final String? selectedText;
@@ -68,7 +70,7 @@ class TextSelectionCoordinates {
 }
 
 mixin TextSelectionMixin<T extends StatefulWidget> on State<T> {
-  void Function(TextSelectionData?)? get onSelectionChanged => null;
+  OnTextSelectionChanged? get onSelectionChanged => null;
 
   void handleSelectionChange(Map<dynamic, dynamic> data) {
     final selectionData = TextSelectionData.fromMap(data);