PageSub.xaml.ViewModel.cs

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using Dreamine.MVVM.Attributes;
using Dreamine.MVVM.Interfaces.Windows;
using Dreamine.MVVM.ViewModels;
using SampleSmart.Constants;
 
namespace SampleSmart.Pages.PageSub
{
    public partial class PageSubViewModel : ViewModelBase
    {
        private readonly IWindowStateService _windowStateService;

        [DreamineModel]
        private PageSubModel _model;

        [DreamineEvent]
        private PageSubEvent _event;

        [DreamineProperty]
        private string _message = string.Empty;

        [DreamineProperty]
        private bool _isWindowSubOpen;

        public PageSubViewModel(IWindowStateService windowStateService)
        {
            _model = null!;
            _event = null!;
 
            _windowStateService = windowStateService;
 
            Message = Model.Message;
 
            IsWindowSubOpen = _windowStateService.IsOpen(ViewKeys.WindowSub);
            ApplyWindowSubMessage(IsWindowSubOpen);
 
            _windowStateService.StateChanged += OnWindowStateChanged;
        }

        [DreamineCommand("Event.Ok")]
        private partial void Ok();

        [DreamineCommand("Event.Cancel")]
        private partial void Cancel();

        private void OnWindowStateChanged(object? sender, WindowStateChangedEventArgs e)
        {
            if (e.WindowKey != ViewKeys.WindowSub)
            {
                return;
            }
 
            IsWindowSubOpen = e.IsOpen;
            ApplyWindowSubMessage(e.IsOpen);
        }

        private void ApplyWindowSubMessage(bool isOpen)
        {
            Message = isOpen
                ? "WindowSub 창이 열려 있습니다."
                : "WindowSub 창이 닫혔습니다.";
        }
    }
}