trifid_mobile/lib/components/SpecialTextField.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter/widgets.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() {
    formatters = widget.inputFormatters;
    if (formatters == null || formatters.length == 0) {
      formatters = [FilteringTextInputFormatter.allow(RegExp(r'[^\t]'))];
    }

    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,
      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);
  }
}