fluffychat/lib/pages/chat_list/navi_rail_item.dart

import 'package:flutter/material.dart';

import 'package:fluffychat/config/app_config.dart';

class NaviRailItem extends StatelessWidget {
  final String toolTip;
  final bool isSelected;
  final void Function() onTap;
  final Widget icon;
  final Widget? selectedIcon;

  const NaviRailItem({
    required this.toolTip,
    required this.isSelected,
    required this.onTap,
    required this.icon,
    this.selectedIcon,
    Key? key,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      height: 64,
      width: 64,
      child: Stack(
        children: [
          Positioned(
            top: 16,
            bottom: 16,
            left: 0,
            child: AnimatedContainer(
              width: isSelected ? 4 : 0,
              duration: const Duration(milliseconds: 200),
              decoration: BoxDecoration(
                color: Theme.of(context).primaryColor,
                borderRadius: const BorderRadius.only(
                  topRight: Radius.circular(90),
                  bottomRight: Radius.circular(90),
                ),
              ),
            ),
          ),
          Center(
            child: IconButton(
              onPressed: onTap,
              tooltip: toolTip,
              icon: Material(
                  borderRadius: BorderRadius.circular(AppConfig.borderRadius),
                  color: isSelected
                      ? Theme.of(context).colorScheme.primaryContainer
                      : Theme.of(context).colorScheme.background,
                  child: Padding(
                    padding: const EdgeInsets.symmetric(
                      horizontal: 8.0,
                      vertical: 8.0,
                    ),
                    child: isSelected ? selectedIcon ?? icon : icon,
                  )),
            ),
          ),
        ],
      ),
    );
  }
}