mobile_nebula/lib/components/SpecialTextField.dart

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

/// A normal TextField or CupertinoTextField that looks the same on all platforms
class SpecialTextField extends StatefulWidget {
  const SpecialTextField(
      {Key? key,
      this.placeholder,
      this.suffix,
      this.controller,
      this.focusNode,
      this.nextFocusNode,
      this.autocorrect,
      this.minLines,
      this.maxLines,
      this.maxLength,
      this.maxLengthEnforcement,
      this.style,
      this.keyboardType,
      this.textInputAction,
      this.textCapitalization,
      this.textAlign,
      this.autofocus,
      this.onChanged,
      this.enabled,
      this.expands,
      this.keyboardAppearance,
      this.textAlignVertical,
      this.inputFormatters})
      : super(key: key);

  final String? placeholder;
  final TextEditingController? controller;
  final FocusNode? focusNode;
  final FocusNode? nextFocusNode;
  final bool? autocorrect;
  final int? minLines;
  final int? maxLines;
  final int? maxLength;
  final MaxLengthEnforcement? maxLengthEnforcement;
  final Widget? suffix;
  final TextStyle? style;
  final TextInputType? keyboardType;
  final Brightness? keyboardAppearance;

  final TextInputAction? textInputAction;
  final TextCapitalization? textCapitalization;
  final TextAlign? textAlign;
  final TextAlignVertical? textAlignVertical;

  final bool? autofocus;
  final ValueChanged<String>? onChanged;
  final bool? enabled;
  final List<TextInputFormatter>? inputFormatters;
  final bool? expands;

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

class _SpecialTextFieldState extends State<SpecialTextField> {
  List<TextInputFormatter> formatters = [];

  @override
  void initState() {
    if (widget.inputFormatters == null || formatters.length == 0) {
      formatters = [FilteringTextInputFormatter.allow(RegExp(r'[^\t]'))];
    } else {
      formatters = widget.inputFormatters!;
    }

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return PlatformTextField(
        autocorrect: widget.autocorrect,
        minLines: widget.minLines,
        maxLines: widget.maxLines,
        maxLength: widget.maxLength,
        maxLengthEnforcement: widget.maxLengthEnforcement,
        keyboardType: widget.keyboardType,
        keyboardAppearance: widget.keyboardAppearance,
        textInputAction: widget.textInputAction,
        textCapitalization: widget.textCapitalization,
        textAlign: widget.textAlign,
        textAlignVertical: widget.textAlignVertical,
        autofocus: widget.autofocus,
        focusNode: widget.focusNode,
        onChanged: widget.onChanged,
        enabled: widget.enabled ?? false, // TODO: maybe there's a better way to do this?  widget.enabled is nullable, should it be?
        onSubmitted: (_) {
          if (widget.nextFocusNode != null) {
            FocusScope.of(context).requestFocus(widget.nextFocusNode);
          }
        },
        expands: widget.expands,
        inputFormatters: formatters,
        material: (_, __) => MaterialTextFieldData(
            decoration: InputDecoration(
                border: InputBorder.none,
                contentPadding: EdgeInsets.zero,
                isDense: true,
                hintText: widget.placeholder,
                counterText: '',
                suffix: widget.suffix)),
        cupertino: (_, __) => CupertinoTextFieldData(
            decoration: BoxDecoration(),
            padding: EdgeInsets.zero,
            placeholder: widget.placeholder,
            suffix: widget.suffix),
        style: widget.style,
        controller: widget.controller);
  }
}