import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

class InputFieldWidget extends StatelessWidget {
  String _labelDisplayText = "";
  String _hintText = "";
  void Function(double) _setValue = (x) => {};

  InputFieldWidget(
      String labelDisplayText, String hintText, void Function(double) setValue,
      {super.key}) {
    _labelDisplayText = labelDisplayText;
    _hintText = hintText;
    _setValue = setValue;
  }

  @override
  Widget build(BuildContext context) {
    return Expanded(
        child: 
        
        TextField(
      keyboardType: TextInputType.number,
      inputFormatters: [FilteringTextInputFormatter.allow(RegExp('[0-9.]'))],
      onChanged: (value) {
        double? number = double.tryParse(value);
        if (number == null) {
          ScaffoldMessenger.of(context).showSnackBar(
            const SnackBar(
                content: Text('Bitte geben Sie eine Zal zwischen 0-9 ein')),
          );
        } else {
          ScaffoldMessenger.of(context).clearSnackBars();
          _setValue(number);
        }
      },
      decoration: InputDecoration(
        border: const OutlineInputBorder(),
        labelText: _labelDisplayText,
        hintText: _hintText,
      ),
    ));
  }
}