diff --git a/Chapter05/Complete/Ch5-MyMediaCollection.sln b/Chapter05/Complete/Ch5-MyMediaCollection.sln new file mode 100644 index 0000000..d74113c --- /dev/null +++ b/Chapter05/Complete/Ch5-MyMediaCollection.sln @@ -0,0 +1,43 @@ + +Microsoft Visual Studio Solution File, Format Version 12.00 +# Visual Studio Version 17 +VisualStudioVersion = 17.5.33530.505 +MinimumVisualStudioVersion = 10.0.40219.1 +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MyMediaCollection", "MyMediaCollection\MyMediaCollection.csproj", "{972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|ARM64 = Debug|ARM64 + Debug|x64 = Debug|x64 + Debug|x86 = Debug|x86 + Release|ARM64 = Release|ARM64 + Release|x64 = Release|x64 + Release|x86 = Release|x86 + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Debug|ARM64.ActiveCfg = Debug|ARM64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Debug|ARM64.Build.0 = Debug|ARM64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Debug|ARM64.Deploy.0 = Debug|ARM64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Debug|x64.ActiveCfg = Debug|x64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Debug|x64.Build.0 = Debug|x64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Debug|x64.Deploy.0 = Debug|x64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Debug|x86.ActiveCfg = Debug|x86 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Debug|x86.Build.0 = Debug|x86 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Debug|x86.Deploy.0 = Debug|x86 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Release|ARM64.ActiveCfg = Release|ARM64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Release|ARM64.Build.0 = Release|ARM64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Release|ARM64.Deploy.0 = Release|ARM64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Release|x64.ActiveCfg = Release|x64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Release|x64.Build.0 = Release|x64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Release|x64.Deploy.0 = Release|x64 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Release|x86.ActiveCfg = Release|x86 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Release|x86.Build.0 = Release|x86 + {972D5C0D-86E6-4A2F-A6FD-8D4FE3380707}.Release|x86.Deploy.0 = Release|x86 + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection + GlobalSection(ExtensibilityGlobals) = postSolution + SolutionGuid = {C9277197-C949-4948-80CD-0A685EE6DCBB} + EndGlobalSection +EndGlobal diff --git a/Chapter05/Complete/MyMediaCollection/App.xaml b/Chapter05/Complete/MyMediaCollection/App.xaml new file mode 100644 index 0000000..eeb9e6e --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/App.xaml @@ -0,0 +1,18 @@ + + + + + + + + + + + + + + diff --git a/Chapter05/Complete/MyMediaCollection/App.xaml.cs b/Chapter05/Complete/MyMediaCollection/App.xaml.cs new file mode 100644 index 0000000..3eb7fec --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/App.xaml.cs @@ -0,0 +1,70 @@ +using Microsoft.Extensions.DependencyInjection; +using Microsoft.Extensions.Hosting; +using Microsoft.UI.Xaml; +using Microsoft.UI.Xaml.Controls; +using Microsoft.UI.Xaml.Navigation; +using MyMediaCollection.Interfaces; +using MyMediaCollection.Services; +using MyMediaCollection.ViewModels; +using MyMediaCollection.Views; +using System; +using System.Net; +using System.Threading.Tasks; + +namespace MyMediaCollection +{ + /// + /// Provides application-specific behavior to supplement the default Application class. + /// + public partial class App : Application + { + public static IHost HostContainer { get; private set; } + + /// + /// Initializes the singleton application object. This is the first line of authored code + /// executed, and as such is the logical equivalent of main() or WinMain(). + /// + public App() + { + this.InitializeComponent(); + } + + /// + /// Invoked when the application is launched. + /// + /// Details about the launch request and process. + protected override void OnLaunched(Microsoft.UI.Xaml.LaunchActivatedEventArgs args) + { + m_window = new MainWindow(); + var rootFrame = new Frame(); + RegisterComponents(rootFrame); + rootFrame.NavigationFailed += RootFrame_NavigationFailed; + rootFrame.Navigate(typeof(MainPage), args); + m_window.Content = rootFrame; + m_window.Activate(); + } + + private void RootFrame_NavigationFailed(object sender, NavigationFailedEventArgs e) + { + throw new Exception($"Error loading page {e.SourcePageType.FullName}"); + } + + private Window m_window; + + private void RegisterComponents(Frame rootFrame) + { + var navigationService = new NavigationService(rootFrame); + navigationService.Configure(nameof(MainPage), typeof(MainPage)); + navigationService.Configure(nameof(ItemDetailsPage), typeof(ItemDetailsPage)); + + HostContainer = Host.CreateDefaultBuilder() + .ConfigureServices(services => + { + services.AddSingleton(navigationService); + services.AddSingleton(); + services.AddTransient(); + services.AddTransient(); + }).Build(); + } + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/Assets/LockScreenLogo.scale-200.png b/Chapter05/Complete/MyMediaCollection/Assets/LockScreenLogo.scale-200.png new file mode 100644 index 0000000..7440f0d Binary files /dev/null and b/Chapter05/Complete/MyMediaCollection/Assets/LockScreenLogo.scale-200.png differ diff --git a/Chapter05/Complete/MyMediaCollection/Assets/SplashScreen.scale-200.png b/Chapter05/Complete/MyMediaCollection/Assets/SplashScreen.scale-200.png new file mode 100644 index 0000000..32f486a Binary files /dev/null and b/Chapter05/Complete/MyMediaCollection/Assets/SplashScreen.scale-200.png differ diff --git a/Chapter05/Complete/MyMediaCollection/Assets/Square150x150Logo.scale-200.png b/Chapter05/Complete/MyMediaCollection/Assets/Square150x150Logo.scale-200.png new file mode 100644 index 0000000..53ee377 Binary files /dev/null and b/Chapter05/Complete/MyMediaCollection/Assets/Square150x150Logo.scale-200.png differ diff --git a/Chapter05/Complete/MyMediaCollection/Assets/Square44x44Logo.scale-200.png b/Chapter05/Complete/MyMediaCollection/Assets/Square44x44Logo.scale-200.png new file mode 100644 index 0000000..f713bba Binary files /dev/null and b/Chapter05/Complete/MyMediaCollection/Assets/Square44x44Logo.scale-200.png differ diff --git a/Chapter05/Complete/MyMediaCollection/Assets/Square44x44Logo.targetsize-24_altform-unplated.png b/Chapter05/Complete/MyMediaCollection/Assets/Square44x44Logo.targetsize-24_altform-unplated.png new file mode 100644 index 0000000..dc9f5be Binary files /dev/null and b/Chapter05/Complete/MyMediaCollection/Assets/Square44x44Logo.targetsize-24_altform-unplated.png differ diff --git a/Chapter05/Complete/MyMediaCollection/Assets/StoreLogo.png b/Chapter05/Complete/MyMediaCollection/Assets/StoreLogo.png new file mode 100644 index 0000000..a4586f2 Binary files /dev/null and b/Chapter05/Complete/MyMediaCollection/Assets/StoreLogo.png differ diff --git a/Chapter05/Complete/MyMediaCollection/Assets/Wide310x150Logo.scale-200.png b/Chapter05/Complete/MyMediaCollection/Assets/Wide310x150Logo.scale-200.png new file mode 100644 index 0000000..8b4a5d0 Binary files /dev/null and b/Chapter05/Complete/MyMediaCollection/Assets/Wide310x150Logo.scale-200.png differ diff --git a/Chapter05/Complete/MyMediaCollection/Enums/ItemType.cs b/Chapter05/Complete/MyMediaCollection/Enums/ItemType.cs new file mode 100644 index 0000000..2e50873 --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/Enums/ItemType.cs @@ -0,0 +1,9 @@ +namespace MyMediaCollection.Enums +{ + public enum ItemType + { + Music, + Video, + Book + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/Enums/LocationType.cs b/Chapter05/Complete/MyMediaCollection/Enums/LocationType.cs new file mode 100644 index 0000000..a8d19aa --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/Enums/LocationType.cs @@ -0,0 +1,8 @@ +namespace MyMediaCollection.Enums +{ + public enum LocationType + { + InCollection, + Loaned + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/Interfaces/IDataService.cs b/Chapter05/Complete/MyMediaCollection/Interfaces/IDataService.cs new file mode 100644 index 0000000..e53eff7 --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/Interfaces/IDataService.cs @@ -0,0 +1,19 @@ +using MyMediaCollection.Enums; +using MyMediaCollection.Model; +using System.Collections.Generic; + +namespace MyMediaCollection.Interfaces +{ + public interface IDataService + { + IList GetItems(); + MediaItem GetItem(int id); + int AddItem(MediaItem item); + void UpdateItem(MediaItem item); + IList GetItemTypes(); + Medium GetMedium(string name); + IList GetMediums(); + IList GetMediums(ItemType itemType); + IList GetLocationTypes(); + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/Interfaces/INavigationService.cs b/Chapter05/Complete/MyMediaCollection/Interfaces/INavigationService.cs new file mode 100644 index 0000000..c8ccee6 --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/Interfaces/INavigationService.cs @@ -0,0 +1,12 @@ +using System; + +namespace MyMediaCollection.Interfaces +{ + public interface INavigationService + { + string CurrentPage { get; } + void NavigateTo(string page); + void NavigateTo(string page, object parameter); + void GoBack(); + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/MainWindow.xaml b/Chapter05/Complete/MyMediaCollection/MainWindow.xaml new file mode 100644 index 0000000..7ebe85e --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/MainWindow.xaml @@ -0,0 +1,10 @@ + + + \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/MainWindow.xaml.cs b/Chapter05/Complete/MyMediaCollection/MainWindow.xaml.cs new file mode 100644 index 0000000..b955d8d --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/MainWindow.xaml.cs @@ -0,0 +1,15 @@ +using Microsoft.UI.Xaml; + +namespace MyMediaCollection +{ + /// + /// An empty window that can be used on its own or navigated to within a Frame. + /// + public sealed partial class MainWindow : Window + { + public MainWindow() + { + this.InitializeComponent(); + } + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/Model/MediaItem.cs b/Chapter05/Complete/MyMediaCollection/Model/MediaItem.cs new file mode 100644 index 0000000..5ab161a --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/Model/MediaItem.cs @@ -0,0 +1,13 @@ +using MyMediaCollection.Enums; + +namespace MyMediaCollection.Model +{ + public class MediaItem + { + public int Id { get; set; } + public string Name { get; set; } + public ItemType MediaType { get; set; } + public Medium MediumInfo { get; set; } + public LocationType Location { get; set; } + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/Model/Medium.cs b/Chapter05/Complete/MyMediaCollection/Model/Medium.cs new file mode 100644 index 0000000..f22fac4 --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/Model/Medium.cs @@ -0,0 +1,11 @@ +using MyMediaCollection.Enums; + +namespace MyMediaCollection.Model +{ + public class Medium + { + public int Id { get; set; } + public string Name { get; set; } + public ItemType MediaType { get; set; } + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/MyMediaCollection.csproj b/Chapter05/Complete/MyMediaCollection/MyMediaCollection.csproj new file mode 100644 index 0000000..2d334d5 --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/MyMediaCollection.csproj @@ -0,0 +1,65 @@ + + + WinExe + net6.0-windows10.0.19041.0 + 10.0.17763.0 + MyMediaCollection + app.manifest + x86;x64;ARM64 + win10-x86;win10-x64;win10-arm64 + win10-$(Platform).pubxml + true + true + 10.0.18362.0 + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + MSBuild:Compile + + + + + MSBuild:Compile + + + + + + true + + diff --git a/Chapter05/Complete/MyMediaCollection/Package.appxmanifest b/Chapter05/Complete/MyMediaCollection/Package.appxmanifest new file mode 100644 index 0000000..11029a8 --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/Package.appxmanifest @@ -0,0 +1,48 @@ + + + + + + + + MyMediaCollection + alash + Assets\StoreLogo.png + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/Chapter05/Complete/MyMediaCollection/Properties/launchSettings.json b/Chapter05/Complete/MyMediaCollection/Properties/launchSettings.json new file mode 100644 index 0000000..b7ae329 --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/Properties/launchSettings.json @@ -0,0 +1,10 @@ +{ + "profiles": { + "MyMediaCollection (Package)": { + "commandName": "MsixPackage" + }, + "MyMediaCollection (Unpackaged)": { + "commandName": "Project" + } + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/Services/DataService.cs b/Chapter05/Complete/MyMediaCollection/Services/DataService.cs new file mode 100644 index 0000000..2f57701 --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/Services/DataService.cs @@ -0,0 +1,163 @@ +using MyMediaCollection.Enums; +using MyMediaCollection.Interfaces; +using MyMediaCollection.Model; +using System; +using System.Collections.Generic; +using System.Linq; + +namespace MyMediaCollection.Services +{ + public class DataService : IDataService + { + private IList _items; + private IList _itemTypes; + private IList _mediums; + private IList _locationTypes; + + public DataService() + { + PopulateItemTypes(); + PopulateMediums(); + PopulateLocationTypes(); + PopulateItems(); + } + + private void PopulateItems() + { + var cd = new MediaItem + { + Id = 1, + Name = "Classical Favorites", + MediaType = ItemType.Music, + MediumInfo = _mediums.FirstOrDefault(m => m.Name == "CD"), + Location = LocationType.InCollection + }; + + var book = new MediaItem + { + Id = 2, + Name = "Classic Fairy Tales", + MediaType = ItemType.Book, + MediumInfo = _mediums.FirstOrDefault(m => m.Name == "Hardcover"), + Location = LocationType.InCollection + }; + + var bluRay = new MediaItem + { + Id = 3, + Name = "The Mummy", + MediaType = ItemType.Video, + MediumInfo = _mediums.FirstOrDefault(m => m.Name == "Blu Ray"), + Location = LocationType.InCollection + }; + + _items = new List + { + cd, + book, + bluRay + }; + } + + private void PopulateMediums() + { + var cd = new Medium { Id = 1, MediaType = ItemType.Music, Name = "CD" }; + var vinyl = new Medium { Id = 2, MediaType = ItemType.Music, Name = "Vinyl" }; + var hardcover = new Medium { Id = 3, MediaType = ItemType.Book, Name = "Hardcover" }; + var paperback = new Medium { Id = 4, MediaType = ItemType.Book, Name = "Paperback" }; + var dvd = new Medium { Id = 5, MediaType = ItemType.Video, Name = "DVD" }; + var bluRay = new Medium { Id = 6, MediaType = ItemType.Video, Name = "Blu Ray" }; + + _mediums = new List + { + cd, + vinyl, + hardcover, + paperback, + dvd, + bluRay + }; + } + + private void PopulateItemTypes() + { + _itemTypes = new List + { + ItemType.Book, + ItemType.Music, + ItemType.Video + }; + } + + private void PopulateLocationTypes() + { + _locationTypes = new List + { + LocationType.InCollection, + LocationType.Loaned + }; + } + + public int AddItem(MediaItem item) + { + item.Id = _items.Max(i => i.Id) + 1; + _items.Add(item); + + return item.Id; + } + + public MediaItem GetItem(int id) + { + return _items.FirstOrDefault(i => i.Id == id); + } + + public IList GetItems() + { + return _items; + } + + public IList GetItemTypes() + { + return _itemTypes; + } + + public IList GetMediums() + { + return _mediums; + } + + public IList GetMediums(ItemType itemType) + { + return _mediums + .Where(m => m.MediaType == itemType) + .ToList(); + } + + public IList GetLocationTypes() + { + return _locationTypes; + } + + public void UpdateItem(MediaItem item) + { + var idx = -1; + var matchedItem = + (from x in _items + let ind = idx++ + where x.Id == item.Id + select ind).FirstOrDefault(); + + if (idx == -1) + { + throw new Exception("Unable to update item. Item not found in collection."); + } + + _items[idx] = item; + } + + public Medium GetMedium(string name) + { + return _mediums.FirstOrDefault(m => m.Name == name); + } + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/Services/NavigationService.cs b/Chapter05/Complete/MyMediaCollection/Services/NavigationService.cs new file mode 100644 index 0000000..63f8c95 --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/Services/NavigationService.cs @@ -0,0 +1,84 @@ +using Microsoft.UI.Xaml.Controls; +using MyMediaCollection.Interfaces; +using System; +using System.Collections.Concurrent; +using System.Collections.Generic; +using System.Linq; + +namespace MyMediaCollection.Services +{ + public class NavigationService : INavigationService + { + public NavigationService(Frame rootFrame) + { + AppFrame = rootFrame; + } + + private readonly IDictionary _pages = new ConcurrentDictionary(); + + public const string RootPage = "(Root)"; + + public const string UnknownPage = "(Unknown)"; + + private static Frame AppFrame; + + public void Configure(string page, Type type) + { + if (_pages.Values.Any(v => v == type)) + { + throw new ArgumentException($"The {type.Name} view has already been registered under another name."); + } + + _pages[page] = type; + } + + /// + /// Gets the name of the currently displayed page. + /// + public string CurrentPage + { + get + { + var frame = AppFrame; + + if (frame.BackStackDepth == 0) + return RootPage; + + if (frame.Content == null) + return UnknownPage; + + var type = frame.Content.GetType(); + + if (_pages.Values.All(v => v != type)) + return UnknownPage; + + var item = _pages.Single(i => i.Value == type); + + return item.Key; + } + } + + public void NavigateTo(string page) + { + NavigateTo(page, null); + } + + public void NavigateTo(string page, object parameter) + { + if (!_pages.ContainsKey(page)) + { + throw new ArgumentException($"Unable to find a page registered with the name {page}."); + } + + AppFrame.Navigate(_pages[page], parameter); + } + + public void GoBack() + { + if (AppFrame?.CanGoBack == true) + { + AppFrame.GoBack(); + } + } + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/ViewModels/ItemDetailsViewModel.cs b/Chapter05/Complete/MyMediaCollection/ViewModels/ItemDetailsViewModel.cs new file mode 100644 index 0000000..28db7ed --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/ViewModels/ItemDetailsViewModel.cs @@ -0,0 +1,161 @@ +using CommunityToolkit.Mvvm.ComponentModel; +using CommunityToolkit.Mvvm.Input; +using MyMediaCollection.Enums; +using MyMediaCollection.Interfaces; +using MyMediaCollection.Model; +using System; +using System.Collections.ObjectModel; +using System.Linq; + +namespace MyMediaCollection.ViewModels +{ + public partial class ItemDetailsViewModel : ObservableObject + { + [ObservableProperty] + private ObservableCollection locationTypes = new(); + [ObservableProperty] + private ObservableCollection mediums = new(); + [ObservableProperty] + private ObservableCollection itemTypes = new(); + private int _itemId; + [ObservableProperty] + private string itemName; + [ObservableProperty] + private string selectedMedium; + [ObservableProperty] + private string selectedItemType; + [ObservableProperty] + private string selectedLocation; + [ObservableProperty] + private bool isDirty; + private int _selectedItemId = -1; + protected INavigationService _navigationService; + protected IDataService _dataService; + + public ItemDetailsViewModel(INavigationService navigationService, IDataService dataService) + { + _navigationService = navigationService; + _dataService = dataService; + + PopulateLists(); + } + + public void InitializeItemDetailData(int itemId) + { + _selectedItemId = itemId; + + PopulateExistingItem(_dataService); + IsDirty = false; + } + + private void PopulateExistingItem(IDataService dataService) + { + if (_selectedItemId > 0) + { + var item = _dataService.GetItem(_selectedItemId); + Mediums.Clear(); + + foreach (string medium in dataService.GetMediums(item.MediaType).Select(m => m.Name)) + Mediums.Add(medium); + + _itemId = item.Id; + ItemName = item.Name; + SelectedMedium = item.MediumInfo.Name; + SelectedLocation = item.Location.ToString(); + SelectedItemType = item.MediaType.ToString(); + } + } + + private void PopulateLists() + { + ItemTypes.Clear(); + foreach (string iType in Enum.GetNames(typeof(ItemType))) + ItemTypes.Add(iType); + + LocationTypes.Clear(); + foreach (string lType in Enum.GetNames(typeof(LocationType))) + LocationTypes.Add(lType); + + Mediums = new ObservableCollection(); + } + + private void Save() + { + MediaItem item; + + if (_itemId > 0) + { + item = _dataService.GetItem(_itemId); + + item.Name = ItemName; + item.Location = (LocationType)Enum.Parse(typeof(LocationType), SelectedLocation); + item.MediaType = (ItemType)Enum.Parse(typeof(ItemType), SelectedItemType); + item.MediumInfo = _dataService.GetMedium(SelectedMedium); + + _dataService.UpdateItem(item); + } + else + { + item = new MediaItem + { + Name = ItemName, + Location = (LocationType)Enum.Parse(typeof(LocationType), SelectedLocation), + MediaType = (ItemType)Enum.Parse(typeof(ItemType), SelectedItemType), + MediumInfo = _dataService.GetMedium(SelectedMedium) + }; + + _dataService.AddItem(item); + } + } + + public void SaveItemAndContinue() + { + Save(); + _itemId = 0; + ItemName = string.Empty; + SelectedMedium = null; + SelectedLocation = null; + SelectedItemType = null; + IsDirty = false; + } + + public void SaveItemAndReturn() + { + Save(); + _navigationService.GoBack(); + } + + partial void OnItemNameChanged(string value) + { + IsDirty = true; + } + + partial void OnSelectedMediumChanged(string value) + { + IsDirty = true; + } + + partial void OnSelectedItemTypeChanged(string value) + { + IsDirty = true; + Mediums.Clear(); + + if (!string.IsNullOrWhiteSpace(value)) + { + foreach (string med in _dataService.GetMediums((ItemType)Enum.Parse(typeof(ItemType), SelectedItemType)).Select(m => m.Name)) + Mediums.Add(med); + } + } + + partial void OnSelectedLocationChanged(string value) + { + IsDirty = true; + } + + [RelayCommand] + private void Cancel() + { + _navigationService.GoBack(); + } + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/ViewModels/MainViewModel.cs b/Chapter05/Complete/MyMediaCollection/ViewModels/MainViewModel.cs new file mode 100644 index 0000000..c819bb3 --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/ViewModels/MainViewModel.cs @@ -0,0 +1,100 @@ +using CommunityToolkit.Mvvm.ComponentModel; +using CommunityToolkit.Mvvm.Input; +using Microsoft.UI.Xaml.Input; +using MyMediaCollection.Interfaces; +using MyMediaCollection.Model; +using System.Collections.ObjectModel; + +namespace MyMediaCollection.ViewModels +{ + public partial class MainViewModel : ObservableObject + { + [ObservableProperty] + private string selectedMedium; + [ObservableProperty] + private ObservableCollection items = new ObservableCollection(); + private ObservableCollection allItems; + [ObservableProperty] + private ObservableCollection mediums; + [ObservableProperty] + [NotifyCanExecuteChangedFor(nameof(DeleteCommand))] + private MediaItem selectedMediaItem; + private INavigationService _navigationService; + private IDataService _dataService; + private const string AllMediums = "All"; + + public MainViewModel(INavigationService navigationService, IDataService dataService) + { + _navigationService = navigationService; + _dataService = dataService; + + PopulateData(); + } + + public void PopulateData() + { + Items.Clear(); + + foreach (var item in _dataService.GetItems()) + { + Items.Add(item); + } + + allItems = new ObservableCollection(Items); + + Mediums = new ObservableCollection + { + AllMediums + }; + + foreach (var itemType in _dataService.GetItemTypes()) + { + Mediums.Add(itemType.ToString()); + } + + SelectedMedium = Mediums[0]; + } + + partial void OnSelectedMediumChanged(string value) + { + Items.Clear(); + + foreach (var item in allItems) + { + if (string.IsNullOrWhiteSpace(value) + || value == "All" + || value == item.MediaType.ToString()) + { + Items.Add(item); + } + } + } + + [RelayCommand] + private void AddEdit() + { + var selectedItemId = -1; + + if (SelectedMediaItem != null) + { + selectedItemId = SelectedMediaItem.Id; + } + + _navigationService.NavigateTo("ItemDetailsPage", selectedItemId); + } + + public void ListViewDoubleTapped(object sender, DoubleTappedRoutedEventArgs e) + { + AddEdit(); + } + + [RelayCommand(CanExecute = nameof(CanDeleteItem))] + private void Delete() + { + allItems.Remove(SelectedMediaItem); + Items.Remove(SelectedMediaItem); + } + + private bool CanDeleteItem() => SelectedMediaItem != null; + } +} \ No newline at end of file diff --git a/Chapter05/Complete/MyMediaCollection/Views/ItemDetailsPage.xaml b/Chapter05/Complete/MyMediaCollection/Views/ItemDetailsPage.xaml new file mode 100644 index 0000000..be08f04 --- /dev/null +++ b/Chapter05/Complete/MyMediaCollection/Views/ItemDetailsPage.xaml @@ -0,0 +1,92 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +