Created text editing controller which builds TextSpans from list of M…

lib/core/controllers/colored_text_editing_controller.dart

@@ -23,16 +23,23 @@ class ColoredTextEditingController extends TextEditingController {
  this.highlightStyle = const HighlightStyle(),
  });
 
+ /// Clear mistakes list when text mas modified
+ void _handleTextChange(String newValue) {
+ if (newValue.length != text.length) {
+ _mistakes.clear();
+ }
+ }
+
  /// Generates TextSpan from Mistake list
  @override
  TextSpan buildTextSpan({
  required BuildContext context,
  TextStyle? style,
  required bool withComposing,
  }) {
- final int textLength = text.length;
- final Iterable<TextSpan> spanList =
-  _generateSpans(textLength: textLength, style: style);
+ final Iterable<TextSpan> spanList = _generateSpans(
+  style: style,
+ );
 
  return TextSpan(
  children: spanList.toList(),
@@ -41,19 +48,12 @@ class ColoredTextEditingController extends TextEditingController {
 
  /// Generator function to create TextSpan instances
  Iterable<TextSpan> _generateSpans({
- required int textLength,
+ // required int textLength,
  TextStyle? style,
  }) sync* {
  int currentOffset = 0; // enter index
 
  for (final Mistake mistake in _mistakes) {
- /// Breaks the loop if iterated Mistake offset is bigger than text
- /// length.
- if (mistake.offset > textLength ||
- mistake.offset + mistake.length > textLength) {
- break;
- }
-
  /// TextSpan before mistake
  yield TextSpan(
  text: text.substring(
@@ -90,45 +90,6 @@ class ColoredTextEditingController extends TextEditingController {
  );
  }
 
- /// Apply changes to Mistake list while new data being fetched
- void _handleTextChange(String newText) {
- final int deltaLength = newText.length - text.length;
-
- /// Update the _mistakes list in-place based on the text modifications
- _mistakes = _mistakes
- .map((mistake) {
- int newOffset = mistake.offset;
- int newLength = mistake.length;
-
- /// If the text modification starts within the mistake
- if (selection.start >= mistake.offset &&
- selection.start <= mistake.offset + mistake.length) {
- newLength += deltaLength;
- }
-
- /// If the text modification starts before the mistake
- else if (selection.start < mistake.offset) {
- newOffset += deltaLength;
- }
-
- /// Return the updated mistake (if the length is greater than 0)
- return newLength > 0
- ? Mistake(
- message: mistake.message,
- type: mistake.type,
- offset: newOffset,
- length: newLength,
- replacements: mistake.replacements,
- )
- : null;
- })
- .whereType<Mistake>()
- .toList();
-
- /// Notify listeners to rebuild the widget
- notifyListeners();
- }
-
  /// A method sets new list of Mistake and triggers buildTextSpan
  void highlightMistakes(List<Mistake> list) {
  _mistakes = list;

lib/presentation/language_tool_text_field.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/material.dart';
 import 'package:languagetool_textfield/core/controllers/colored_text_editing_controller.dart';
-import 'package:languagetool_textfield/domain/highlight_style.dart';
 import 'package:languagetool_textfield/domain/language_check_service.dart';
 
 /// A TextField widget that checks the grammar using the given [langService]