Wino-Mail/Wino.Core.Domain/MenuItems/MenuItemBase.cs

using System;
using System.Collections.ObjectModel;
using CommunityToolkit.Mvvm.ComponentModel;
using Wino.Core.Domain.Interfaces;

namespace Wino.Core.Domain.MenuItems
{
    public partial class MenuItemBase : ObservableObject, IMenuItem
    {
        [ObservableProperty]
        private bool _isExpanded;

        [ObservableProperty]
        private bool _isSelected;

        public IMenuItem ParentMenuItem { get; }

        public Guid? EntityId { get; }

        public MenuItemBase(Guid? entityId = null, IMenuItem parentMenuItem = null)
        {
            EntityId = entityId;
            ParentMenuItem = parentMenuItem;
        }

        public void Expand()
        {
            // Recursively expand all parent menu items if parent exists, starting from parent.
            if (ParentMenuItem != null)
            {
                IMenuItem parentMenuItem = ParentMenuItem;

                while (parentMenuItem != null)
                {
                    parentMenuItem.IsExpanded = true;

                    parentMenuItem = parentMenuItem.ParentMenuItem;
                }
            }

            // Finally expand itself.
            IsExpanded = true;
        }
    }

    public partial class MenuItemBase<T> : MenuItemBase
    {
        [ObservableProperty]
        private T _parameter;

        public MenuItemBase(T parameter, Guid? entityId, IMenuItem parentMenuItem = null) : base(entityId, parentMenuItem) => Parameter = parameter;
    }

    public partial class MenuItemBase<TValue, TCollection> : MenuItemBase<TValue>
    {
        [ObservableProperty]
        private bool _isChildSelected;

        protected MenuItemBase(TValue parameter, Guid? entityId, IMenuItem parentMenuItem = null) : base(parameter, entityId, parentMenuItem) { }

        public ObservableCollection<TCollection> SubMenuItems { get; set; } = [];
    }
}