YouTubeViewers/YouTubeViewers.WPF/ViewModels/YouTubeViewersViewModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;
using YouTubeViewers.WPF.Commands;
using YouTubeViewers.WPF.Stores;

namespace YouTubeViewers.WPF.ViewModels
{
    public class YouTubeViewersViewModel : ViewModelBase
    {
        public YouTubeViewersListingViewModel YouTubeViewersListingViewModel { get; }
        public YouTubeViewersDetailsViewModel YouTubeViewersDetailsViewModel { get; }


        private bool _IsLoading;
        public bool IsLoading
        {
            get
            {
                return _IsLoading;
            }
            set
            {
                _IsLoading = value;
                OnPropertyChanged(nameof(IsLoading));
            }
        }


        #region ErrorMessage

        private string _errorMessage;
        public string ErrorMessage
        {
            get { return _errorMessage; }
            set { _errorMessage = value; 
                OnPropertyChanged(nameof(ErrorMessage));
                OnPropertyChanged(nameof(HasErrorMessage));
            }
        }

        #endregion ErrorMessage

        public bool HasErrorMessage => !string.IsNullOrEmpty(ErrorMessage);

        public ICommand LoadYouTubeViewersCommand { get; }
        public ICommand AddYouTubeViewersCommand { get; }
        public YouTubeViewersViewModel(YouTubeViewersStore youTubeViewersStore, SelectedYouTubeViewerStore _selectedYouTubeViewerStore, ModalNavigationStore modalNavigationStore)
        {
            
            YouTubeViewersListingViewModel = new YouTubeViewersListingViewModel(youTubeViewersStore, _selectedYouTubeViewerStore, modalNavigationStore);
            YouTubeViewersDetailsViewModel = new YouTubeViewersDetailsViewModel(_selectedYouTubeViewerStore);
            LoadYouTubeViewersCommand = new LoadYouTubeViewersCommand(this,youTubeViewersStore);
            AddYouTubeViewersCommand = new OpenAddYouTubeViewerCommand(youTubeViewersStore, modalNavigationStore);
        }

        public static YouTubeViewersViewModel LoadViewModel(
            YouTubeViewersStore youTubeViewersStore,
            SelectedYouTubeViewerStore selectedYouTubeViewerStore,
            ModalNavigationStore modalNavigationStore)
        {
            YouTubeViewersViewModel viewModel = new YouTubeViewersViewModel(youTubeViewersStore, selectedYouTubeViewerStore, modalNavigationStore);

            viewModel.LoadYouTubeViewersCommand.Execute(null);

            return viewModel;
        }
    }
}