flutter_paydemo/lib/utils/dialog.dart

/// 对话框工具：统一封装弹窗（扫码、确认、通用）
library;

import 'package:flutter/material.dart';

/// 打开对话框
/// - [builder] 构建弹窗内容
/// - [onSubmit] 点确认/提交时回调，返回 true 表示立即关闭，false 保持打开
/// - [confirmText] 确认按钮文案
/// - [barrierDismissible] 点击遮罩是否可关闭
Future<void> openDialog(
  BuildContext context, {
  required WidgetBuilder builder,
  bool Function()? onSubmit,
  String? confirmText,
  bool barrierDismissible = true,
}) {
  return showDialog<void>(
    context: context,
    barrierDismissible: barrierDismissible,
    builder: (dialogContext) {
      return AlertDialog(
        content: builder(dialogContext),
        actions: onSubmit == null
            ? null
            : [
                TextButton(
                  onPressed: () {
                    if (onSubmit() == true) {
                      Navigator.of(dialogContext).pop();
                    }
                  },
                  child: Text(confirmText ?? '确定'),
                ),
              ],
      );
    },
  );
}

/// 简单确认弹窗
Future<bool> showConfirmDialog(
  BuildContext context, {
  required String title,
  required String message,
  String confirmText = '确定',
  String cancelText = '取消',
}) async {
  final result = await showDialog<bool>(
    context: context,
    builder: (dialogContext) => AlertDialog(
      title: Text(title),
      content: Text(message),
      actions: [
        TextButton(
          onPressed: () => Navigator.of(dialogContext).pop(false),
          child: Text(cancelText),
        ),
        TextButton(
          onPressed: () => Navigator.of(dialogContext).pop(true),
          child: Text(confirmText),
        ),
      ],
    ),
  );
  return result ?? false;
}