Model/Menu/Menu.cs - base - karachi/KPO_CP_CrossyRoad

Model/Menu/Menu.cs
100 строк3 KB
karachi-23
base
10 янв 2025, 23:55
10 янв 2025, 23:55f5bd4ec
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Model.Menu
{
  /// <summary>
  /// Меню
  /// </summary>
  public class Menu
  {
    /// <summary>
    /// Необходимость перерисовки
    /// </summary>
    public event Action? NeedRedraw = null;
    /// <summary>
    /// Список элементов меню
    /// </summary>
    private readonly Dictionary<int, MenuItem> _menuItems = new();
    /// <summary>
    /// ID пункта меню в фокусе
    /// </summary>
    public int FocusItemIndex { get; protected set; } = -1;
    /// <summary>
    /// Элементы пунта меню
    /// </summary>
    public IList<MenuItem> Items => _menuItems.Values.ToList();
    /// <summary>
    /// Использование пунта меню с помощью ID
    /// </summary>
    /// <param name="parId">ID пунта меню</param>
    /// <returns></returns>
    public MenuItem this[int parId]
    {
      get => _menuItems[parId];
    }
    /// <summary>
    /// Добавление пункта меню в список
    /// </summary>
    /// <param name="parMenuItem">Пункт меню</param>
    /// <returns></returns>
    public MenuItem AddItem(MenuItem parMenuItem)
    {
      _menuItems.Add(parMenuItem.ID, parMenuItem);
      return parMenuItem;
    }
    /// <summary>
    /// Смена фокуса на предыдущий пункт меню
    /// </summary>
    public void FocusPrevious()
    {
      int focusedPreviousItemIndex = FocusItemIndex;
      FocusItemIndex = FocusItemIndex > 0 ? FocusItemIndex - 1 : _menuItems.Count - 1;

      _menuItems[FocusItemIndex].State = MenuItem.MenuItemState.Focused;
      _menuItems[focusedPreviousItemIndex].State = MenuItem.MenuItemState.Normal;

      NeedRedraw?.Invoke();
    }
    /// <summary>
    /// Смена фокуса на следующий пункт меню
    /// </summary>
    public void FocusNext() 
    {
      int focusedPreviousItemIndex = FocusItemIndex;
      FocusItemIndex = FocusItemIndex < _menuItems.Count - 1 ? FocusItemIndex + 1 : 0;

      _menuItems[FocusItemIndex].State = MenuItem.MenuItemState.Focused;
      _menuItems[focusedPreviousItemIndex].State = MenuItem.MenuItemState.Normal;

      NeedRedraw?.Invoke();
    }
    /// <summary>
    /// Установка пункта меню в фокус
    /// </summary>
    /// <param name="parId"></param>
    public void FocusById(int parId)
    {
      int saveFocusedIndex = FocusItemIndex;
      MenuItem item = this[parId];
      FocusItemIndex = Items.IndexOf(item);

      if(saveFocusedIndex != -1)
      {
        _menuItems[saveFocusedIndex].State = MenuItem.MenuItemState.Normal;
      }
      _menuItems[FocusItemIndex].State = MenuItem.MenuItemState.Focused;
      NeedRedraw?.Invoke();
    }
    /// <summary>
    /// Активация элемента, установленного в фокус
    /// </summary>
    public void SelectedFocusedElement()
    {
      _menuItems[FocusItemIndex].State = MenuItem.MenuItemState.Selected;
    }
  }
}