ChickenFarm/UI/CF.APP/chicken_farm/lib/components/vb_app_bar.dart

import 'package:chicken_farm/routes/app_routes.dart';
import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';

class VberAppBar extends StatelessWidget implements PreferredSizeWidget {
  final String title;
  final bool showLeftButton;
  final List<Widget>? actions;
  final VoidCallback? onLeftPressed;
  final bool alwaysGoToHome;

  const VberAppBar({
    super.key,
    required this.title,
    this.showLeftButton = true,
    this.actions,
    this.onLeftPressed,
    this.alwaysGoToHome = false,
  });

  @override
  Widget build(BuildContext context) {
    return AppBar(
      title: Text(title),
      centerTitle: true,
      leading: showLeftButton
          ? IconButton(
              icon: Icon(alwaysGoToHome ? Icons.home : Icons.arrow_back),
              onPressed: () {
                if (onLeftPressed != null) {
                  onLeftPressed!();
                } else if (alwaysGoToHome) {
                  context.go(AppRouteNames.home);
                } else if (context.canPop()) {
                  // 如果可以返回，则返回上一页
                  context.pop();
                } else {
                  context.go(AppRouteNames.home);
                }
              },
            )
          : null,
      actions: actions,
    );
  }

  @override
  Size get preferredSize => const Size.fromHeight(kToolbarHeight);
}