comunicmobile/lib/ui/widgets/settings/text_settings_edit_tile.dart

import 'package:comunic/ui/dialogs/single_input_dialog.dart';
import 'package:comunic/utils/intl_utils.dart';
import 'package:flutter/material.dart';
import 'package:settings_ui/settings_ui.dart';

/// Text edit settings tile
///
/// @author Pierre HUBERT

bool _defaultCheck(String s) => s.isNotEmpty;

class TextEditSettingsTile extends SettingsTile {
  final String title;
  final String currValue;
  final void Function(String) onChanged;
  final bool Function(String) checkInput;
  final bool allowEmptyValues;
  final int maxLines;
  final int maxLength;

  bool get readOnly => onChanged == null;

  const TextEditSettingsTile({
    Key key,
    @required this.title,
    @required this.currValue,
    @required this.onChanged,
    this.checkInput = _defaultCheck,
    this.allowEmptyValues = false,
    this.maxLength,
    this.maxLines = 1,
  })  : assert(title != null),
        assert(currValue != null),
        assert(checkInput != null),
        assert(allowEmptyValues != null),
        assert(maxLines != null);

  @override
  Widget build(BuildContext context) {
    return SettingsTile(
      title: title,
      subtitle: currValue,
      onPressed: readOnly ? null : (_) => _changeValue(context),
    );
  }

  void _changeValue(BuildContext context) async {
    final value = await showDialog<String>(
      context: context,
      builder: (b) => SingleInputDialog(
        title: title,
        icon: null,
        initialValue: currValue,
        label: title,
        checkInput: checkInput,
        errorMessage: tr("Invalid value!"),
        canBeEmpty: allowEmptyValues,
        maxLines: maxLines,
        maxLength: maxLength,
      ),
    );

    if (value == null) return;

    onChanged(value);
  }
}