tboss_oa_module/lib/shared/widgets/submitting_dialog.dart

import 'package:flutter/material.dart';
import 'package:tdesign_flutter/tdesign_flutter.dart';
import '../../core/theme/app_colors_extension.dart';
import '../../core/i18n/app_localizations.dart';

/// 提交中 loading 弹窗。
///
/// 方形卡片，上方菊花动画，下方文字。
/// 使用方式：
/// ```dart
/// SubmittingDialog.show(context);
/// // ... 异步操作 ...
/// SubmittingDialog.hide(context);
/// ```
class SubmittingDialog {
  SubmittingDialog._();

  /// 显示提交中弹窗。返回按钮可关闭（关闭后 API 请求仍在进行）。
  static void show(BuildContext context) {
    showDialog(
      context: context,
      barrierDismissible: false,
      builder: (_) => _SubmittingContent(),
    );
  }

  /// 关闭提交中弹窗。即使弹窗已被返回键关闭也不会抛异常。
  static void hide(BuildContext context) {
    Navigator.of(context).maybePop();
  }
}

class _SubmittingContent extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final l10n = AppLocalizations.of(context);
    final colors = Theme.of(context).extension<AppColorsExtension>()!;
    return Center(
      child: Container(
        width: 120,
        padding: const EdgeInsets.fromLTRB(24, 28, 24, 24),
        decoration: BoxDecoration(
          color: colors.bgCard,
          borderRadius: BorderRadius.circular(12),
        ),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            const TDLoading(
              size: TDLoadingSize.large,
              icon: TDLoadingIcon.activity,
            ),
            const SizedBox(height: 16),
            Text(
              l10n.get('submitting'),
              style: TextStyle(
                fontSize: 14,
                fontWeight: FontWeight.w500,
                color: colors.textSecondary,
              ),
            ),
          ],
        ),
      ),
    );
  }
}