exchange_limits_dialog.dart

Lines 1–124

import 'package:flutter/material.dart'; class ExchangeLimitsDialog extends StatefulWidget {  const ExchangeLimitsDialog(      {super.key, this.allowBasic = true, this.currentTier});   final bool allowBasic;  final String? currentTier;   @override  State<ExchangeLimitsDialog> createState() => _ExchangeLimitsDialogState();} class _ExchangeLimitsDialogState extends State<ExchangeLimitsDialog> {  late String? selectedTier =      ['sdd', 'cdd'].contains(widget.currentTier) ? widget.currentTier : null;   @override  Widget build(BuildContext context) => AlertDialog(        scrollable: true,        insetPadding: const EdgeInsets.symmetric(horizontal: 24, vertical: 24),        title: const Text('Choose Exchange limits'),        content: SizedBox(          width: 400,          child: RadioGroup<String>(            groupValue: selectedTier,            onChanged: (value) => setState(() => selectedTier = value),            child: Column(              mainAxisSize: MainAxisSize.min,              crossAxisAlignment: CrossAxisAlignment.stretch,              children: [                const Text(                    'Select your limits, then continue to verification.'),                const SizedBox(height: 20),                if (widget.allowBasic) ...[                  _LimitOption(                    value: 'sdd',                    title: 'Basic',                    limit: '\$1,000 per 3 months',                    selected: selectedTier == 'sdd',                  ),                  const SizedBox(height: 12),                ],                _LimitOption(                  value: 'cdd',                  title: 'Higher limits',                  limit: '\$25,000 per year',                  selected: selectedTier == 'cdd',                ),              ],            ),          ),        ),        actions: [          SizedBox(            width: double.infinity,            child: FilledButton(              onPressed: selectedTier == null                  ? null                  : () => Navigator.pop(context, selectedTier),              child: const Text('Continue'),            ),          ),          SizedBox(            width: double.infinity,            child: TextButton(              onPressed: () => Navigator.pop(context),              child: const Text('Cancel'),            ),          ),        ],      );} class _LimitOption extends StatelessWidget {  const _LimitOption({    required this.value,    required this.title,    required this.limit,    required this.selected,  });   final String value;  final String title;  final String limit;  final bool selected;   @override  Widget build(BuildContext context) {    final theme = Theme.of(context);    final colors = theme.colorScheme;    return Material(      color: selected ? colors.primaryContainer : colors.surfaceContainerLow,      shape: RoundedRectangleBorder(        borderRadius: BorderRadius.circular(16),        side: BorderSide(          color: selected ? colors.primary : colors.outline,          width: selected ? 2 : 1,        ),      ),      clipBehavior: Clip.antiAlias,      child: RadioListTile<String>(        value: value,        selected: selected,        activeColor: colors.primary,        contentPadding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),        title: Text(title,            style: theme.textTheme.titleMedium?.copyWith(              fontWeight: FontWeight.w600,              color: selected ? colors.onPrimaryContainer : colors.onSurface,            )),        subtitle: Padding(          padding: const EdgeInsets.only(top: 4),          child: Text(limit,              style: theme.textTheme.bodyMedium?.copyWith(                color: selected                    ? colors.onPrimaryContainer                    : colors.onSurfaceVariant,              )),        ),      ),    );  }}