mohemm-flutter-app/lib/ui/chat/custom_auto_direction.dart

import 'package:flutter/material.dart';
import 'package:intl/intl.dart' as intl;

class CustomAutoDirection extends StatefulWidget {
  final String text;
  final Widget child;
  final void Function(bool isRTL)? onDirectionChange;

  const CustomAutoDirection({Key? key, required this.text, required this.child, this.onDirectionChange}) : super(key: key);

  @override
  _CustomAutoDirectionState createState() => _CustomAutoDirectionState();
}

class _CustomAutoDirectionState extends State<CustomAutoDirection> {
  late String text;
  late Widget childWidget;

  @override
  Widget build(BuildContext context) {
    text = widget.text;
    childWidget = widget.child;
    return Directionality(textDirection: isRTL(text) ? TextDirection.rtl : TextDirection.ltr, child: childWidget);
  }

  @override
  void didUpdateWidget(CustomAutoDirection oldWidget) {
    if (isRTL(oldWidget.text) != isRTL(widget.text)) {
      WidgetsBinding.instance.addPostFrameCallback((_) => widget.onDirectionChange?.call(isRTL(widget.text)));
    }
    super.didUpdateWidget(oldWidget);
  }

  bool isRTL(String text) {
    if (text.isEmpty) return Directionality.of(context) == TextDirection.rtl;
    return intl.Bidi.detectRtlDirectionality(text);
  }
}