PopupMonitor.xaml.ViewModel.cs

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using Dreamine.MVVM.Attributes;
using Dreamine.MVVM.Interfaces.Windows;
using Dreamine.MVVM.ViewModels;
using SampleSmart.Constants;
using System.Text;
 
namespace SampleSmart.Pages.WindowSub
{
    public partial class PopupMonitorViewModel : ViewModelBase
    {
        private readonly IWindowStateService _windowStateService;

        [DreamineModel]
        private PopupMonitorModel _model;

        [DreamineEvent]
        private PopupMonitorEvent _event;

        [DreamineProperty]
        private string _windowStateSummary = string.Empty;

        public PopupMonitorViewModel(IWindowStateService windowStateService)
        {
            _model = null!;
            _event = null!;
 
            _windowStateService = windowStateService;
            _windowStateService.StateChanged += OnWindowStateChanged;
 
            RefreshSummary();
        }

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

        private void OnWindowStateChanged(object? sender, WindowStateChangedEventArgs e)
        {
            RefreshSummary();
        }

        private void RefreshSummary()
        {
            StringBuilder builder = new();
 
            AppendState(builder, ViewKeys.WindowSub);
            AppendState(builder, ViewKeys.PopupNotice);
            AppendState(builder, ViewKeys.PopupMonitor);
            AppendState(builder, ViewKeys.PopupSetting);
 
            WindowStateSummary = builder.ToString();
        }

        private void AppendState(StringBuilder builder, string windowKey)
        {
            string state = _windowStateService.IsOpen(windowKey)
                ? "OPEN"
                : "CLOSED";
 
            builder.AppendLine($"{windowKey} : {state}");
        }
    }
}