Apollon/Apollon.WPF/ViewModels/MainViewModel.cs

using Apollon.WPF.Stores;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Apollon.WPF.ViewModels
{
    public class MainViewModel : ViewModelBase
    {
        private readonly NavigationStore _navigationStore;
        private readonly ModalNavigationStore _modalNavigationStore;

        public ViewModelBase CurrentModalViewModel => _modalNavigationStore.CurrentViewModel;
        public ViewModelBase CurrentViewModel => _navigationStore.CurrentViewModel;
        public bool IsModalOpen => _modalNavigationStore.IsOpen;
        public OverviewViewModel OverviewViewModel { get; }        

        public MainViewModel(ModalNavigationStore modalNavigationStore, OverviewViewModel overviewViewModel, NavigationStore navigationStore)
        {
            _navigationStore = navigationStore;
            _modalNavigationStore = modalNavigationStore;
            OverviewViewModel = overviewViewModel;            

            _navigationStore.CurrentViewModelChanged += NavigationStore_CurrentViewModelChanged;
            _modalNavigationStore.CurrentViewModelChanged += ModalNavigationStore_CurrentViewModelChanged;            
        }

        protected override void Dispose()
        {
            _navigationStore.CurrentViewModelChanged -= NavigationStore_CurrentViewModelChanged;
            _modalNavigationStore.CurrentViewModelChanged -= ModalNavigationStore_CurrentViewModelChanged;
            base.Dispose();
        }

        private void NavigationStore_CurrentViewModelChanged()
        {
            OnPropertyChanged(nameof(CurrentViewModel));
        }
        private void ModalNavigationStore_CurrentViewModelChanged()
        {
            OnPropertyChanged(nameof(CurrentModalViewModel));
            OnPropertyChanged(nameof(IsModalOpen));
        }
    }
}