I have an amount input text field with custom TextEditingController that has symbol e.i. 200 $, when I try to select the whole text |2 000 $| (| – selection pins), an exception is thrown. I have an amount input text field with custom TextEditingController that has symbol e.i. 200 $, when I try to select the whole text |2 000 $| (| – selection pins), an exception is thrown. I have an amount input text field with custom TextEditingController that has symbol e.i. 200 $, when I try to select the whole text |2 000 $| (| – selection pins), an exception is thrown.

    ════════ Exception caught by gesture ═══════════════════════════════════════════
    Range end 12 is out of text of length 7
    'package:flutter/src/services/text_input.dart':
    Failed assertion: line 968 pos 12: 'range.end >= 0 && range.end <= text.length'
    ════════════════════════════════════════════════════════════════════════════════

    [AppMetricaPlugin.MainFacade] error caught by handler Range end 10 is out of text of length 7
[AppMetricaPlugin.MainFacade] _AssertionError ('package:flutter/src/services/text_input.dart': Failed assertion: line 968 pos 12: 'range.end >= 0 && range.end <= text.length': Range end 10 is out of text of length 7)
[AppMetricaPlugin.MainFacade] #0      _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:51:61)
                              #1      _AssertionError._throwNew (dart:core-patch/errors_patch.dart:40:5)
                              #2      TextEditingValue._textRangeIsValid (package:flutter/src/services/text_input.dart:968:12)
                              #3      TextEditingValue.toJSON (package:flutter/src/services/text_input.dart:921:12)
                              #4      _PlatformTextInputControl.setEditingState (package:flutter/src/services/text_input.dart:2276:13)
                              #5      TextInput._setEditingState (package:flutter/src/services/text_input.dart:1957:15)
                              #6      TextInputConnection.setEditingState (package:flutter/src/services/text_input.dart:1381:25)
                              #7      EditableTextState._updateRemoteEditingValueIfNeeded (package:flutter/src/widgets/editable_text.dart:3379:27)
                              #8      EditableTextState.endBatchEdit (package:flutter/src/widgets/editable_text.dart:3368:5)
                              #9      EditableTextState._formatAndSetValue (package:flutter/src/widgets/editable_text.dart:3919:5)
                              #10     EditableTextState.userUpdateTextEditingValue (package:flutter/src/widgets/editable_text.dart:4271:5)
                              #11     TextSelectionOverlay._handleSelectionHandleChanged (package:flutter/src/widgets/text_selection.dart:900:23)
                              #12     TextSelectionOverlay._handleSelectionEndHandleDragUpdate (package:flutter/src/widgets/text_selection.dart:776:5)
                              #13     SelectionOverlay._handleEndHandleDragUpdate (package:flutter/src/widgets/text_selection.dart:1212:28)
                              #14     DragGestureRecognizer._checkUpdate.<anonymous closure> (package:flutter/src/gestures/monodrag.dart:581:55)
                              #15     GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:315:24)
                              #16     DragGestureRecognizer._checkUpdate (package:flutter/src/gestures/monodrag.dart:581:7)
                              #17     DragGestureRecognizer.handleEvent (package:flutter/src/gestures/monodrag.dart:422:9)
                              #18     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:98:12)
                              #19     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:143:9)
                              #20     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:633:13)
                              #21     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:141:18)
                              #22     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:127:7)
                              #23     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:495:19)
                              #24     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:475:22)
                              #25     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:430:11)
                              #26     GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:420:7)
                              #27     GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:383:5)
                              #28     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:330:7)
                              #29     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:299:9)
                              #30     _rootRunUnary (dart:async/zone.dart:1415:13)
                              #31     _CustomZone.runUnary (dart:async/zone.dart:1308:19)
                              #32     _CustomZone.runUnaryGuarded (dart:async/zone.dart:1217:7)
                              #33     _invoke1 (dart:ui/hooks.dart:330:10)
                              #34     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:429:7)
                              #35     _dispatchPointerDataPacket (dart:ui/hooks.dart:262:31)

—————- My custom TextEditingController

class AmountBigController extends TextEditingController {
  AmountBigController({
    required this.symbol,
    required this.focusNode,
    this.includeSymbolInHint = true,
    String? hintText,
    super.text = '',
  }) : _hintText = hintText;

  final String symbol;
  final FocusNode focusNode;
  final bool includeSymbolInHint;
  String? _hintText;

  void setHintText(String text) {
    _hintText = text;
    notifyListeners();
  }

  @override
  void clear() {
    value = const TextEditingValue(
      text: '',
      selection: TextSelection.collapsed(offset: 0),
    );
  }

  @override
  TextSpan buildTextSpan({
    required BuildContext context,
    required bool withComposing,
    TextStyle? style,
  }) {
    final List<TextSpan> children = [];
    final isHintShown = focusNode.hasFocus && value.text.isEmpty;

    final TextStyle? textStyle =
        isHintShown ? Typographies.textMediumHelper : style;

    late final TextSpan symbolTextSpan;
    if (isHintShown) {
      if (includeSymbolInHint) {
        symbolTextSpan = TextSpan(
          text: symbol,
          style: textStyle,
        );
      } else {
        symbolTextSpan = TextSpan(
          text: '',
          style: textStyle,
        );
      }
    } else {
      symbolTextSpan = TextSpan(
        text: symbol,
        style: textStyle,
      );
    }

    if (text.isEmpty) {
      if (focusNode.hasFocus) {
        children.insert(
          0,
          TextSpan(text: _hintText, style: Typographies.textMediumHelper),
        );
      } else {
        children.insert(
          0,
          TextSpan(
            text: '0',
            style: style,
          ),
        );
      }
    } else {
      children.add(TextSpan(style: style, text: text));
    }

    children.insert(children.length, symbolTextSpan);
    return TextSpan(children: children);
  }
}