aurora-sharp-desktop/Aurora/Design/Views/MainView/MainViewModel.cs

using System;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using Aurora.Design.Components.NavigationMenu;
using Aurora.Design.Views.Albums;
using Aurora.Design.Views.Artists;
using Aurora.Design.Views.Songs;
using Aurora.Design.Views.Stations;
using Aurora.Design.Views.Party;
using Aurora.Design.Views.Profile;

namespace Aurora.Design.Views.MainView
{
    public class MainViewModel : BaseViewModel
    {
        private ObservableCollection<NavigationItem> _pages;
        public ObservableCollection<NavigationItem> Pages
        {
            get { return _pages; }
            set
            {
                if (value != _pages)
                {
                    _pages = value;
                    OnPropertyChanged("Pages");
                }

            }
        }

        private NavigationItem _selectedItem;
        public NavigationItem SelectedItem
        {
            get
            {
                return _selectedItem;
            }
            set
            {
                SetProperty(ref _selectedItem, value);
                OnPropertyChanged("Title");
            }
        }

        public string Title
        {
            get
            {
                return (_selectedItem != null && !string.IsNullOrWhiteSpace(_selectedItem.Title)) ?
                    _selectedItem.Title : "";
            }
        }

        public MainViewModel()
        {
            _pages = new ObservableCollection<NavigationItem>(new[]
            {
                new NavigationItem { Id = 0, Title = "Songs", Group="Your Music", TargetType = typeof(SongsView), TargetViewModelType = typeof(SongsViewModel) },
                new NavigationItem { Id = 1, Title = "Artists", Group="Your Music", TargetType = typeof(ArtistsView), TargetViewModelType = typeof(ArtistsViewModel)},
                new NavigationItem { Id = 2, Title = "Albums", Group="Your Music", TargetType = typeof(AlbumsView), TargetViewModelType = typeof(AlbumsViewModel)},
                new NavigationItem { Id = 3, Title = "Stations", Group="Your Music", TargetType = typeof(StationsView), TargetViewModelType = typeof(StationsViewModel)},
                new NavigationItem { Id = 4, Title = "Party", Group="Social", TargetType = typeof(PartyView), TargetViewModelType = typeof(PartyViewModel)},
                new NavigationItem { Id = 5, Title = "Profile", Group="Social", TargetType = typeof(ProfileView), TargetViewModelType = typeof(ProfileViewModel)},
                new NavigationItem { Id = 6, Title = "A + B", Group="Playlists", TargetType = typeof(StationsView), TargetViewModelType = typeof(StationsViewModel)}
            });

        }

    }
}