diff --git a/Avalonia.sln b/Avalonia.sln index aeae8f2f1f..ffcf266b0c 100644 --- a/Avalonia.sln +++ b/Avalonia.sln @@ -224,6 +224,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Avalonia.Markup.Xaml.Loader EndProject Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Avalonia.ReactiveUI.Events", "src\Avalonia.ReactiveUI.Events\Avalonia.ReactiveUI.Events.csproj", "{28F18757-C3E6-4BBE-A37D-11BA2AB9177C}" EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Avalonia.ReactiveUI.Events.UnitTests", "tests\Avalonia.ReactiveUI.Events.UnitTests\Avalonia.ReactiveUI.Events.UnitTests.csproj", "{780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}" +EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Sandbox", "samples\Sandbox\Sandbox.csproj", "{11BE52AF-E2DD-4CF0-B19A-05285ACAF571}" +EndProject Global GlobalSection(SharedMSBuildProjectFiles) = preSolution src\Shared\RenderHelpers\RenderHelpers.projitems*{3c4c0cb4-0c0f-4450-a37b-148c84ff905f}*SharedItemsImports = 13 @@ -2038,6 +2042,54 @@ Global {28F18757-C3E6-4BBE-A37D-11BA2AB9177C}.Release|iPhone.Build.0 = Release|Any CPU {28F18757-C3E6-4BBE-A37D-11BA2AB9177C}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU {28F18757-C3E6-4BBE-A37D-11BA2AB9177C}.Release|iPhoneSimulator.Build.0 = Release|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Ad-Hoc|Any CPU.ActiveCfg = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Ad-Hoc|Any CPU.Build.0 = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Ad-Hoc|iPhone.ActiveCfg = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Ad-Hoc|iPhone.Build.0 = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Ad-Hoc|iPhoneSimulator.ActiveCfg = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Ad-Hoc|iPhoneSimulator.Build.0 = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.AppStore|Any CPU.ActiveCfg = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.AppStore|Any CPU.Build.0 = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.AppStore|iPhone.ActiveCfg = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.AppStore|iPhone.Build.0 = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.AppStore|iPhoneSimulator.ActiveCfg = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.AppStore|iPhoneSimulator.Build.0 = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Debug|Any CPU.Build.0 = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Debug|iPhone.ActiveCfg = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Debug|iPhone.Build.0 = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Release|Any CPU.ActiveCfg = Release|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Release|Any CPU.Build.0 = Release|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Release|iPhone.ActiveCfg = Release|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Release|iPhone.Build.0 = Release|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7}.Release|iPhoneSimulator.Build.0 = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Ad-Hoc|Any CPU.ActiveCfg = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Ad-Hoc|Any CPU.Build.0 = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Ad-Hoc|iPhone.ActiveCfg = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Ad-Hoc|iPhone.Build.0 = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Ad-Hoc|iPhoneSimulator.ActiveCfg = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Ad-Hoc|iPhoneSimulator.Build.0 = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.AppStore|Any CPU.ActiveCfg = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.AppStore|Any CPU.Build.0 = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.AppStore|iPhone.ActiveCfg = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.AppStore|iPhone.Build.0 = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.AppStore|iPhoneSimulator.ActiveCfg = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.AppStore|iPhoneSimulator.Build.0 = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Debug|Any CPU.Build.0 = Debug|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Debug|iPhone.ActiveCfg = Debug|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Debug|iPhone.Build.0 = Debug|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Release|Any CPU.ActiveCfg = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Release|Any CPU.Build.0 = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Release|iPhone.ActiveCfg = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Release|iPhone.Build.0 = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571}.Release|iPhoneSimulator.Build.0 = Release|Any CPU EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE @@ -2096,6 +2148,8 @@ Global {351337F5-D66F-461B-A957-4EF60BDB4BA6} = {C5A00AC3-B34C-4564-9BDD-2DA473EF4D8B} {3C84E04B-36CF-4D0D-B965-C26DD649D1F3} = {A0CC0258-D18C-4AB3-854F-7101680FC3F9} {909A8CBD-7D0E-42FD-B841-022AD8925820} = {8B6A8209-894F-4BA1-B880-965FD453982C} + {780AC0FE-8DD2-419F-A1DC-AC7E3EB393F7} = {C5A00AC3-B34C-4564-9BDD-2DA473EF4D8B} + {11BE52AF-E2DD-4CF0-B19A-05285ACAF571} = {9B9E3891-2366-4253-A952-D08BCEB71098} EndGlobalSection GlobalSection(ExtensibilityGlobals) = postSolution SolutionGuid = {87366D66-1391-4D90-8999-95A620AD786A} diff --git a/Avalonia.v3.ncrunchsolution b/Avalonia.v3.ncrunchsolution index bef7e45524..afce1018ec 100644 --- a/Avalonia.v3.ncrunchsolution +++ b/Avalonia.v3.ncrunchsolution @@ -6,6 +6,9 @@ src\Avalonia.Build.Tasks\bin\Debug\netstandard2.0\Mono.Cecil.dll True + + RunApiCompat = false + .ncrunch True diff --git a/build/NetFX.props b/build/NetFX.props index ed5cb6dd69..8ffc9ec561 100644 --- a/build/NetFX.props +++ b/build/NetFX.props @@ -1,7 +1,7 @@  - + diff --git a/build/SkiaSharp.props b/build/SkiaSharp.props index d7d04c7971..f2e7df36cd 100644 --- a/build/SkiaSharp.props +++ b/build/SkiaSharp.props @@ -1,6 +1,6 @@  - - + + diff --git a/samples/ControlCatalog/MainView.xaml b/samples/ControlCatalog/MainView.xaml index efc90357ed..790813fda0 100644 --- a/samples/ControlCatalog/MainView.xaml +++ b/samples/ControlCatalog/MainView.xaml @@ -45,7 +45,10 @@ - + + + diff --git a/samples/ControlCatalog/Pages/ListBoxPage.xaml b/samples/ControlCatalog/Pages/ListBoxPage.xaml index edf3d41bf5..3521ad71a9 100644 --- a/samples/ControlCatalog/Pages/ListBoxPage.xaml +++ b/samples/ControlCatalog/Pages/ListBoxPage.xaml @@ -1,35 +1,25 @@ - - ListBox - Hosts a collection of ListBoxItem. - - - - - - - - - - - - - Single - Multiple - Toggle - AlwaysSelected - - + + + ListBox + Hosts a collection of ListBoxItem. - + + Multiple + Toggle + AlwaysSelected + AutoScrollToSelectedItem + + + + + + + + diff --git a/samples/ControlCatalog/ViewModels/ListBoxPageViewModel.cs b/samples/ControlCatalog/ViewModels/ListBoxPageViewModel.cs index d088576998..f75bc32105 100644 --- a/samples/ControlCatalog/ViewModels/ListBoxPageViewModel.cs +++ b/samples/ControlCatalog/ViewModels/ListBoxPageViewModel.cs @@ -10,22 +10,39 @@ namespace ControlCatalog.ViewModels { public class ListBoxPageViewModel : ReactiveObject { + private bool _multiple; + private bool _toggle; + private bool _alwaysSelected; + private bool _autoScrollToSelectedItem = true; private int _counter; - private SelectionMode _selectionMode; + private ObservableAsPropertyHelper _selectionMode; public ListBoxPageViewModel() { Items = new ObservableCollection(Enumerable.Range(1, 10000).Select(i => GenerateItem())); + Selection = new SelectionModel(); Selection.Select(1); + _selectionMode = this.WhenAnyValue( + x => x.Multiple, + x => x.Toggle, + x => x.AlwaysSelected, + (m, t, a) => + (m ? SelectionMode.Multiple : 0) | + (t ? SelectionMode.Toggle : 0) | + (a ? SelectionMode.AlwaysSelected : 0)) + .ToProperty(this, x => x.SelectionMode); + AddItemCommand = ReactiveCommand.Create(() => Items.Add(GenerateItem())); RemoveItemCommand = ReactiveCommand.Create(() => { - while (Selection.Count > 0) + var items = Selection.SelectedItems.ToList(); + + foreach (var item in items) { - Items.Remove(Selection.SelectedItems.First()); + Items.Remove(item); } }); @@ -42,25 +59,37 @@ namespace ControlCatalog.ViewModels } public ObservableCollection Items { get; } - public SelectionModel Selection { get; } + public SelectionMode SelectionMode => _selectionMode.Value; - public ReactiveCommand AddItemCommand { get; } + public bool Multiple + { + get => _multiple; + set => this.RaiseAndSetIfChanged(ref _multiple, value); + } - public ReactiveCommand RemoveItemCommand { get; } + public bool Toggle + { + get => _toggle; + set => this.RaiseAndSetIfChanged(ref _toggle, value); + } - public ReactiveCommand SelectRandomItemCommand { get; } + public bool AlwaysSelected + { + get => _alwaysSelected; + set => this.RaiseAndSetIfChanged(ref _alwaysSelected, value); + } - public SelectionMode SelectionMode + public bool AutoScrollToSelectedItem { - get => _selectionMode; - set - { - Selection.Clear(); - this.RaiseAndSetIfChanged(ref _selectionMode, value); - } + get => _autoScrollToSelectedItem; + set => this.RaiseAndSetIfChanged(ref _autoScrollToSelectedItem, value); } + public ReactiveCommand AddItemCommand { get; } + public ReactiveCommand RemoveItemCommand { get; } + public ReactiveCommand SelectRandomItemCommand { get; } + private string GenerateItem() => $"Item {_counter++.ToString()}"; } } diff --git a/samples/Sandbox/App.axaml b/samples/Sandbox/App.axaml new file mode 100644 index 0000000000..699781eb94 --- /dev/null +++ b/samples/Sandbox/App.axaml @@ -0,0 +1,8 @@ + + + + + diff --git a/samples/Sandbox/App.axaml.cs b/samples/Sandbox/App.axaml.cs new file mode 100644 index 0000000000..7eb8345784 --- /dev/null +++ b/samples/Sandbox/App.axaml.cs @@ -0,0 +1,22 @@ +using Avalonia; +using Avalonia.Controls.ApplicationLifetimes; +using Avalonia.Markup.Xaml; + +namespace Sandbox +{ + public class App : Application + { + public override void Initialize() + { + AvaloniaXamlLoader.Load(this); + } + + public override void OnFrameworkInitializationCompleted() + { + if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktopLifetime) + { + desktopLifetime.MainWindow = new MainWindow(); + } + } + } +} diff --git a/samples/Sandbox/MainWindow.axaml b/samples/Sandbox/MainWindow.axaml new file mode 100644 index 0000000000..6929f192c7 --- /dev/null +++ b/samples/Sandbox/MainWindow.axaml @@ -0,0 +1,4 @@ + + diff --git a/samples/Sandbox/MainWindow.axaml.cs b/samples/Sandbox/MainWindow.axaml.cs new file mode 100644 index 0000000000..b7222e043d --- /dev/null +++ b/samples/Sandbox/MainWindow.axaml.cs @@ -0,0 +1,20 @@ +using Avalonia; +using Avalonia.Controls; +using Avalonia.Markup.Xaml; + +namespace Sandbox +{ + public class MainWindow : Window + { + public MainWindow() + { + this.InitializeComponent(); + this.AttachDevTools(); + } + + private void InitializeComponent() + { + AvaloniaXamlLoader.Load(this); + } + } +} diff --git a/samples/Sandbox/Program.cs b/samples/Sandbox/Program.cs new file mode 100644 index 0000000000..4d7eda8d9f --- /dev/null +++ b/samples/Sandbox/Program.cs @@ -0,0 +1,17 @@ +using Avalonia; +using Avalonia.ReactiveUI; + +namespace Sandbox +{ + public class Program + { + static void Main(string[] args) + { + AppBuilder.Configure() + .UsePlatformDetect() + .UseReactiveUI() + .LogToDebug() + .StartWithClassicDesktopLifetime(args); + } + } +} diff --git a/samples/Sandbox/Sandbox.csproj b/samples/Sandbox/Sandbox.csproj new file mode 100644 index 0000000000..1a0a8a7ce5 --- /dev/null +++ b/samples/Sandbox/Sandbox.csproj @@ -0,0 +1,18 @@ + + + + WinExe + netcoreapp3.1 + true + + + + + + + + + + + + diff --git a/src/Avalonia.Controls.DataGrid/DataGridBoundColumn.cs b/src/Avalonia.Controls.DataGrid/DataGridBoundColumn.cs index 8e82bf1a38..1e72a07760 100644 --- a/src/Avalonia.Controls.DataGrid/DataGridBoundColumn.cs +++ b/src/Avalonia.Controls.DataGrid/DataGridBoundColumn.cs @@ -49,8 +49,12 @@ namespace Avalonia.Controls { if(_binding is Avalonia.Data.Binding binding) { - // Force the TwoWay binding mode if there is a Path present. TwoWay binding requires a Path. - if (!String.IsNullOrEmpty(binding.Path)) + if (binding.Mode == BindingMode.OneWayToSource) + { + throw new InvalidOperationException("DataGridColumn doesn't support BindingMode.OneWayToSource. Use BindingMode.TwoWay instead."); + } + + if (!String.IsNullOrEmpty(binding.Path) && binding.Mode == BindingMode.Default) { binding.Mode = BindingMode.TwoWay; } diff --git a/src/Avalonia.Controls/ListBox.cs b/src/Avalonia.Controls/ListBox.cs index f7e86d697a..d1b8038581 100644 --- a/src/Avalonia.Controls/ListBox.cs +++ b/src/Avalonia.Controls/ListBox.cs @@ -163,6 +163,7 @@ namespace Avalonia.Controls protected override void OnApplyTemplate(TemplateAppliedEventArgs e) { + base.OnApplyTemplate(e); Scroll = e.NameScope.Find("PART_ScrollViewer"); } } diff --git a/src/Avalonia.Controls/Primitives/SelectingItemsControl.cs b/src/Avalonia.Controls/Primitives/SelectingItemsControl.cs index 5f8c5da2f8..c954f9fd4a 100644 --- a/src/Avalonia.Controls/Primitives/SelectingItemsControl.cs +++ b/src/Avalonia.Controls/Primitives/SelectingItemsControl.cs @@ -6,7 +6,6 @@ using System.ComponentModel; using System.Linq; using Avalonia.Controls.Generators; using Avalonia.Controls.Selection; -using Avalonia.Controls.Utils; using Avalonia.Data; using Avalonia.Input; using Avalonia.Input.Platform; @@ -70,8 +69,8 @@ namespace Avalonia.Controls.Primitives /// /// Defines the property. /// - protected static readonly DirectProperty SelectedItemsProperty = - AvaloniaProperty.RegisterDirect( + protected static readonly DirectProperty SelectedItemsProperty = + AvaloniaProperty.RegisterDirect( nameof(SelectedItems), o => o.SelectedItems, (o, v) => o.SelectedItems = v); @@ -111,12 +110,13 @@ namespace Avalonia.Controls.Primitives RoutingStrategies.Bubble); private static readonly IList Empty = Array.Empty(); - private SelectedItemsSync? _selectedItemsSync; private ISelectionModel? _selection; private int _oldSelectedIndex; private object? _oldSelectedItem; - private int _initializing; + private IList? _oldSelectedItems; private bool _ignoreContainerSelectionChanged; + private UpdateState? _updateState; + private bool _hasScrolledToSelectedItem; /// /// Initializes static members of the class. @@ -149,8 +149,27 @@ namespace Avalonia.Controls.Primitives /// public int SelectedIndex { - get => Selection.SelectedIndex; - set => Selection.SelectedIndex = value; + get + { + // When a Begin/EndInit/DataContext update is in place we return the value to be + // updated here, even though it's not yet active and the property changed notification + // has not yet been raised. If we don't do this then the old value will be written back + // to the source when two-way bound, and the update value will be lost. + return _updateState?.SelectedIndex.HasValue == true ? + _updateState.SelectedIndex.Value : + Selection.SelectedIndex; + } + set + { + if (_updateState is object) + { + _updateState.SelectedIndex = value; + } + else + { + Selection.SelectedIndex = value; + } + } } /// @@ -158,17 +177,67 @@ namespace Avalonia.Controls.Primitives /// public object? SelectedItem { - get => Selection.SelectedItem; - set => Selection.SelectedItem = value; + get + { + // See SelectedIndex setter for more information. + return _updateState?.SelectedItem.HasValue == true ? + _updateState.SelectedItem.Value : + Selection.SelectedItem; + } + set + { + if (_updateState is object) + { + _updateState.SelectedItem = value; + } + else + { + Selection.SelectedItem = value; + } + } } /// /// Gets or sets the selected items. /// - protected IList SelectedItems + /// + /// By default returns a collection that can be modified in order to manipulate the control + /// selection, however this property will return null if is + /// re-assigned; you should only use _either_ Selection or SelectedItems. + /// + protected IList? SelectedItems { - get => SelectedItemsSync.SelectedItems; - set => SelectedItemsSync.SelectedItems = value; + get + { + // See SelectedIndex setter for more information. + if (_updateState?.SelectedItems.HasValue == true) + { + return _updateState.SelectedItems.Value; + } + else if (Selection is InternalSelectionModel ism) + { + var result = ism.WritableSelectedItems; + _oldSelectedItems = result; + return result; + } + + return null; + } + set + { + if (_updateState is object) + { + _updateState.SelectedItems = new Optional(value); + } + else if (Selection is InternalSelectionModel i) + { + i.WritableSelectedItems = value; + } + else + { + throw new InvalidOperationException("Cannot set both Selection and SelectedItems."); + } + } } /// @@ -178,19 +247,30 @@ namespace Avalonia.Controls.Primitives { get { - if (_selection is null) + if (_updateState?.Selection.HasValue == true) { - _selection = CreateDefaultSelectionModel(); - InitializeSelectionModel(_selection); + return _updateState.Selection.Value; } + else + { + if (_selection is null) + { + _selection = CreateDefaultSelectionModel(); + InitializeSelectionModel(_selection); + } - return _selection; + return _selection; + } } set { value ??= CreateDefaultSelectionModel(); - if (_selection != value) + if (_updateState is object) + { + _updateState.Selection = new Optional(value); + } + else if (_selection != value) { if (value.Source != null && value.Source != Items) { @@ -212,6 +292,15 @@ namespace Avalonia.Controls.Primitives } InitializeSelectionModel(_selection); + + if (_oldSelectedItems != SelectedItems) + { + RaisePropertyChanged( + SelectedItemsProperty, + new Optional(_oldSelectedItems), + new BindingValue(SelectedItems)); + _oldSelectedItems = SelectedItems; + } } } } @@ -234,20 +323,18 @@ namespace Avalonia.Controls.Primitives /// protected bool AlwaysSelected => (SelectionMode & SelectionMode.AlwaysSelected) != 0; - private SelectedItemsSync SelectedItemsSync => _selectedItemsSync ??= new SelectedItemsSync(Selection); - /// public override void BeginInit() { base.BeginInit(); - ++_initializing; + BeginUpdating(); } /// public override void EndInit() { base.EndInit(); - --_initializing; + EndUpdating(); } /// @@ -295,6 +382,28 @@ namespace Avalonia.Controls.Primitives } } + protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e) + { + base.OnAttachedToVisualTree(e); + AutoScrollToSelectedItemIfNecessary(); + } + + protected override void OnApplyTemplate(TemplateAppliedEventArgs e) + { + base.OnApplyTemplate(e); + + void ExecuteScrollWhenLayoutUpdated(object sender, EventArgs e) + { + LayoutUpdated -= ExecuteScrollWhenLayoutUpdated; + AutoScrollToSelectedItemIfNecessary(); + } + + if (AutoScrollToSelectedItem) + { + LayoutUpdated += ExecuteScrollWhenLayoutUpdated; + } + } + /// protected override void OnContainersMaterialized(ItemContainerEventArgs e) { @@ -351,30 +460,14 @@ namespace Avalonia.Controls.Primitives protected override void OnDataContextBeginUpdate() { base.OnDataContextBeginUpdate(); - ++_initializing; - - if (_selection is object) - { - _selection.Source = null; - } + BeginUpdating(); } /// protected override void OnDataContextEndUpdate() { base.OnDataContextEndUpdate(); - --_initializing; - - if (_selection is object && _initializing == 0) - { - _selection.Source = Items; - - if (Items is null) - { - _selection.Clear(); - _selectedItemsSync?.SelectedItems?.Clear(); - } - } + EndUpdating(); } protected override void OnInitialized() @@ -411,9 +504,11 @@ namespace Avalonia.Controls.Primitives { base.OnPropertyChanged(change); - if (change.Property == ItemsProperty && - _initializing == 0 && - _selection is object) + if (change.Property == AutoScrollToSelectedItemProperty) + { + AutoScrollToSelectedItemIfNecessary(); + } + if (change.Property == ItemsProperty && _updateState is null && _selection is object) { var newValue = change.NewValue.GetValueOrDefault(); _selection.Source = newValue; @@ -601,23 +696,30 @@ namespace Avalonia.Controls.Primitives /// The event args. private void OnSelectionModelPropertyChanged(object sender, PropertyChangedEventArgs e) { - if (e.PropertyName == nameof(ISelectionModel.AnchorIndex) && AutoScrollToSelectedItem) + if (e.PropertyName == nameof(ISelectionModel.AnchorIndex)) { - if (Selection.AnchorIndex > 0) - { - ScrollIntoView(Selection.AnchorIndex); - } + _hasScrolledToSelectedItem = false; + AutoScrollToSelectedItemIfNecessary(); } - else if (e.PropertyName == nameof(ISelectionModel.SelectedIndex)) + else if (e.PropertyName == nameof(ISelectionModel.SelectedIndex) && _oldSelectedIndex != SelectedIndex) { RaisePropertyChanged(SelectedIndexProperty, _oldSelectedIndex, SelectedIndex); _oldSelectedIndex = SelectedIndex; } - else if (e.PropertyName == nameof(ISelectionModel.SelectedItem)) + else if (e.PropertyName == nameof(ISelectionModel.SelectedItem) && _oldSelectedItem != SelectedItem) { RaisePropertyChanged(SelectedItemProperty, _oldSelectedItem, SelectedItem); _oldSelectedItem = SelectedItem; } + else if (e.PropertyName == nameof(InternalSelectionModel.WritableSelectedItems) && + _oldSelectedItems != (Selection as InternalSelectionModel)?.SelectedItems) + { + RaisePropertyChanged( + SelectedItemsProperty, + new Optional(_oldSelectedItems), + new BindingValue(SelectedItems)); + _oldSelectedItems = SelectedItems; + } } /// @@ -674,6 +776,19 @@ namespace Avalonia.Controls.Primitives } } + private void AutoScrollToSelectedItemIfNecessary() + { + if (AutoScrollToSelectedItem && + !_hasScrolledToSelectedItem && + Presenter is object && + Selection.AnchorIndex >= 0 && + ((IVisual)this).IsAttachedToVisualTree) + { + ScrollIntoView(Selection.AnchorIndex); + _hasScrolledToSelectedItem = true; + } + } + /// /// Called when a container raises the . /// @@ -734,14 +849,6 @@ namespace Avalonia.Controls.Primitives } } - private void MarkContainersUnselected() - { - foreach (var container in ItemContainerGenerator.Containers) - { - MarkContainerSelected(container.ContainerControl, false); - } - } - /// /// Sets an item container's 'selected' class or . /// @@ -757,23 +864,6 @@ namespace Avalonia.Controls.Primitives } } - /// - /// Sets an item container's 'selected' class or . - /// - /// The item. - /// Whether the item should be selected or deselected. - private int MarkItemSelected(object item, bool selected) - { - var index = IndexOf(Items, item); - - if (index != -1) - { - MarkItemSelected(index, selected); - } - - return index; - } - private void UpdateContainerSelection() { if (Presenter?.Panel is IPanel panel) @@ -789,7 +879,7 @@ namespace Avalonia.Controls.Primitives private ISelectionModel CreateDefaultSelectionModel() { - return new SelectionModel + return new InternalSelectionModel { SingleSelect = !SelectionMode.HasFlagCustom(SelectionMode.Multiple), }; @@ -797,7 +887,7 @@ namespace Avalonia.Controls.Primitives private void InitializeSelectionModel(ISelectionModel model) { - if (_initializing == 0) + if (_updateState is null) { model.Source = Items; } @@ -825,9 +915,6 @@ namespace Avalonia.Controls.Primitives UpdateContainerSelection(); - _selectedItemsSync ??= new SelectedItemsSync(model); - _selectedItemsSync.SelectionModel = model; - if (SelectedIndex != -1) { RaiseEvent(new SelectionChangedEventArgs( @@ -845,5 +932,96 @@ namespace Avalonia.Controls.Primitives model.SelectionChanged -= OnSelectionModelSelectionChanged; } } + + private void BeginUpdating() + { + _updateState ??= new UpdateState(); + _updateState.UpdateCount++; + } + + private void EndUpdating() + { + if (_updateState is object && --_updateState.UpdateCount == 0) + { + var state = _updateState; + _updateState = null; + + if (state.Selection.HasValue) + { + Selection = state.Selection.Value; + } + + if (state.SelectedItems.HasValue) + { + SelectedItems = state.SelectedItems.Value; + } + + Selection.Source = Items; + + if (Items is null) + { + Selection.Clear(); + } + + if (state.SelectedIndex.HasValue) + { + SelectedIndex = state.SelectedIndex.Value; + } + else if (state.SelectedItem.HasValue) + { + SelectedItem = state.SelectedItem.Value; + } + } + } + + // When in a BeginInit..EndInit block, or when the DataContext is updating, we need to + // defer changes to the selection model because we have no idea in which order properties + // will be set. Consider: + // + // - Both Items and SelectedItem are bound + // - The DataContext changes + // - The binding for SelectedItem updates first, producing an item + // - Items is searched to find the index of the new selected item + // - However Items isn't yet updated; the item is not found + // - SelectedIndex is incorrectly set to -1 + // + // This logic cannot be encapsulated in SelectionModel because the selection model can also + // be bound, consider: + // + // - Both Items and Selection are bound + // - The DataContext changes + // - The binding for Items updates first + // - The new items are assigned to Selection.Source + // - The binding for Selection updates, producing a new SelectionModel + // - Both the old and new SelectionModels have the incorrect Source + private class UpdateState + { + private Optional _selectedIndex; + private Optional _selectedItem; + + public int UpdateCount { get; set; } + public Optional Selection { get; set; } + public Optional SelectedItems { get; set; } + + public Optional SelectedIndex + { + get => _selectedIndex; + set + { + _selectedIndex = value; + _selectedItem = default; + } + } + + public Optional SelectedItem + { + get => _selectedItem; + set + { + _selectedItem = value; + _selectedIndex = default; + } + } + } } } diff --git a/src/Avalonia.Controls/Selection/InternalSelectionModel.cs b/src/Avalonia.Controls/Selection/InternalSelectionModel.cs new file mode 100644 index 0000000000..a28e4b2785 --- /dev/null +++ b/src/Avalonia.Controls/Selection/InternalSelectionModel.cs @@ -0,0 +1,273 @@ +using System; +using System.Collections; +using System.Collections.Generic; +using System.Collections.Specialized; +using System.Diagnostics.CodeAnalysis; +using System.Linq; +using Avalonia.Collections; + +#nullable enable + +namespace Avalonia.Controls.Selection +{ + internal class InternalSelectionModel : SelectionModel + { + private IList? _writableSelectedItems; + private bool _ignoreModelChanges; + private bool _ignoreSelectedItemsChanges; + + public InternalSelectionModel() + { + SelectionChanged += OnSelectionChanged; + SourceReset += OnSourceReset; + } + + [AllowNull] + public IList WritableSelectedItems + { + get + { + if (_writableSelectedItems is null) + { + _writableSelectedItems = new AvaloniaList(); + SubscribeToSelectedItems(); + } + + return _writableSelectedItems; + } + set + { + value ??= new AvaloniaList(); + + if (value.IsFixedSize) + { + throw new NotSupportedException("Cannot assign fixed size selection to SelectedItems."); + } + + if (_writableSelectedItems != value) + { + UnsubscribeFromSelectedItems(); + _writableSelectedItems = value; + SyncFromSelectedItems(); + SubscribeToSelectedItems(); + + if (ItemsView is null) + { + SetInitSelectedItems(value); + } + + RaisePropertyChanged(nameof(WritableSelectedItems)); + } + } + } + + private protected override void SetSource(IEnumerable? value) + { + object?[]? oldSelection = null; + + if (Source is object && value is object) + { + oldSelection = new object?[WritableSelectedItems.Count]; + WritableSelectedItems.CopyTo(oldSelection, 0); + } + + try + { + _ignoreSelectedItemsChanges = true; + base.SetSource(value); + } + finally + { + _ignoreSelectedItemsChanges = false; + } + + if (oldSelection is null) + { + SyncToSelectedItems(); + } + else + { + foreach (var i in oldSelection) + { + var index = ItemsView!.IndexOf(i); + Select(index); + } + } + } + + private void SyncToSelectedItems() + { + if (_writableSelectedItems is object) + { + try + { + _ignoreSelectedItemsChanges = true; + _writableSelectedItems.Clear(); + + foreach (var i in base.SelectedItems) + { + _writableSelectedItems.Add(i); + } + } + finally + { + _ignoreSelectedItemsChanges = false; + } + } + } + + private void SyncFromSelectedItems() + { + if (Source is null || _writableSelectedItems is null) + { + return; + } + + try + { + _ignoreModelChanges = true; + + using (BatchUpdate()) + { + Clear(); + Add(_writableSelectedItems); + } + } + finally + { + _ignoreModelChanges = false; + } + } + + private void SubscribeToSelectedItems() + { + if (_writableSelectedItems is INotifyCollectionChanged incc) + { + incc.CollectionChanged += OnSelectedItemsCollectionChanged; + } + } + + private void UnsubscribeFromSelectedItems() + { + if (_writableSelectedItems is INotifyCollectionChanged incc) + { + incc.CollectionChanged += OnSelectedItemsCollectionChanged; + } + } + + private void OnSelectionChanged(object sender, SelectionModelSelectionChangedEventArgs e) + { + if (_ignoreModelChanges) + { + return; + } + + try + { + var items = WritableSelectedItems; + var deselected = e.DeselectedItems.ToList(); + var selected = e.SelectedItems.ToList(); + + _ignoreSelectedItemsChanges = true; + + foreach (var i in deselected) + { + items.Remove(i); + } + + foreach (var i in selected) + { + items.Add(i); + } + } + finally + { + _ignoreSelectedItemsChanges = false; + } + } + + private void OnSourceReset(object sender, EventArgs e) => SyncFromSelectedItems(); + + private void OnSelectedItemsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e) + { + if (_ignoreSelectedItemsChanges) + { + return; + } + + if (_writableSelectedItems == null) + { + throw new AvaloniaInternalException("CollectionChanged raised but we don't have items."); + } + + void Remove() + { + foreach (var i in e.OldItems) + { + var index = IndexOf(Source, i); + + if (index != -1) + { + Deselect(index); + } + } + } + + try + { + using var operation = BatchUpdate(); + + _ignoreModelChanges = true; + + switch (e.Action) + { + case NotifyCollectionChangedAction.Add: + Add(e.NewItems); + break; + case NotifyCollectionChangedAction.Remove: + Remove(); + break; + case NotifyCollectionChangedAction.Replace: + Remove(); + Add(e.NewItems); + break; + case NotifyCollectionChangedAction.Reset: + Clear(); + Add(_writableSelectedItems); + break; + } + } + finally + { + _ignoreModelChanges = false; + } + } + + private void Add(IList newItems) + { + foreach (var i in newItems) + { + var index = IndexOf(Source, i); + + if (index != -1) + { + Select(index); + } + } + } + + private static int IndexOf(object? source, object? item) + { + if (source is IList l) + { + return l.IndexOf(item); + } + else if (source is ItemsSourceView v) + { + return v.IndexOf(item); + } + + return -1; + } + } +} diff --git a/src/Avalonia.Controls/Selection/SelectionModel.cs b/src/Avalonia.Controls/Selection/SelectionModel.cs index 2556bd4c4c..fd27cb340a 100644 --- a/src/Avalonia.Controls/Selection/SelectionModel.cs +++ b/src/Avalonia.Controls/Selection/SelectionModel.cs @@ -20,8 +20,7 @@ namespace Avalonia.Controls.Selection private SelectedItems? _selectedItems; private SelectedItems.Untyped? _selectedItemsUntyped; private EventHandler? _untypedSelectionChanged; - [AllowNull] private T _initSelectedItem = default; - private bool _hasInitSelectedItem; + private IList? _initSelectedItems; public SelectionModel() { @@ -82,7 +81,19 @@ namespace Avalonia.Controls.Selection [MaybeNull, AllowNull] public T SelectedItem { - get => ItemsView is object ? GetItemAt(_selectedIndex) : _initSelectedItem; + get + { + if (ItemsView is object) + { + return GetItemAt(_selectedIndex); + } + else if (_initSelectedItems is object && _initSelectedItems.Count > 0) + { + return (T)_initSelectedItems[0]; + } + + return default; + } set { if (ItemsView is object) @@ -92,8 +103,9 @@ namespace Avalonia.Controls.Selection else { Clear(); - _initSelectedItem = value; - _hasInitSelectedItem = true; +#pragma warning disable CS8601 + SetInitSelectedItems(new T[] { value }); +#pragma warning restore CS8601 } } } @@ -102,9 +114,10 @@ namespace Avalonia.Controls.Selection { get { - if (ItemsView is null && _hasInitSelectedItem) + if (ItemsView is null && _initSelectedItems is object) { - return new[] { _initSelectedItem }; + return _initSelectedItems is IReadOnlyList i ? + i : _initSelectedItems.Cast().ToList(); } return _selectedItems ??= new SelectedItems(this); @@ -258,8 +271,7 @@ namespace Avalonia.Controls.Selection o.SelectedIndex = -1; } - _initSelectedItem = default; - _hasInitSelectedItem = false; + _initSelectedItems = null; } public void SelectAll() => SelectRange(0, int.MaxValue); @@ -270,7 +282,7 @@ namespace Avalonia.Controls.Selection PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName)); } - private void SetSource(IEnumerable? value) + private protected virtual void SetSource(IEnumerable? value) { if (base.Source != value) { @@ -292,11 +304,14 @@ namespace Avalonia.Controls.Selection { update.Operation.IsSourceUpdate = true; - if (_hasInitSelectedItem) + if (_initSelectedItems is object && ItemsView is object) { - SelectedItem = _initSelectedItem; - _initSelectedItem = default; - _hasInitSelectedItem = false; + foreach (T i in _initSelectedItems) + { + Select(ItemsView.IndexOf(i)); + } + + _initSelectedItems = null; } else { @@ -345,7 +360,9 @@ namespace Avalonia.Controls.Selection LostSelection(this, EventArgs.Empty); } - CommitOperation(update.Operation); + // Don't raise PropertyChanged events here as the OnSourceCollectionChanged event that + // let to this method being called will raise them if necessary. + CommitOperation(update.Operation, raisePropertyChanged: false); } private protected override CollectionChangeState OnItemsAdded(int index, IList items) @@ -430,6 +447,11 @@ namespace Avalonia.Controls.Selection RaisePropertyChanged(nameof(SelectedIndex)); } + if (e.Action == NotifyCollectionChangedAction.Remove && e.OldStartingIndex <= oldSelectedIndex) + { + RaisePropertyChanged(nameof(SelectedItem)); + } + if (oldAnchorIndex != _anchorIndex) { RaisePropertyChanged(nameof(AnchorIndex)); @@ -459,6 +481,16 @@ namespace Avalonia.Controls.Selection return true; } + private protected void SetInitSelectedItems(IList items) + { + if (Source is object) + { + throw new InvalidOperationException("Cannot set init selected items when Source is set."); + } + + _initSelectedItems = items; + } + protected override void OnSourceCollectionChangeFinished() { if (_operation is object) @@ -532,8 +564,7 @@ namespace Avalonia.Controls.Selection o.SelectedIndex = o.AnchorIndex = start; } - _initSelectedItem = default; - _hasInitSelectedItem = false; + _initSelectedItems = null; } [return: MaybeNull] @@ -611,7 +642,7 @@ namespace Avalonia.Controls.Selection } } - private void CommitOperation(Operation operation) + private void CommitOperation(Operation operation, bool raisePropertyChanged = true) { try { @@ -679,23 +710,34 @@ namespace Avalonia.Controls.Selection } } - if (oldSelectedIndex != _selectedIndex) + if (raisePropertyChanged) { - indexesChanged = true; - RaisePropertyChanged(nameof(SelectedIndex)); - RaisePropertyChanged(nameof(SelectedItem)); - } + if (oldSelectedIndex != _selectedIndex) + { + indexesChanged = true; + RaisePropertyChanged(nameof(SelectedIndex)); + } - if (oldAnchorIndex != _anchorIndex) - { - indexesChanged = true; - RaisePropertyChanged(nameof(AnchorIndex)); - } + if (oldSelectedIndex != _selectedIndex || operation.IsSourceUpdate) + { + RaisePropertyChanged(nameof(SelectedItem)); + } - if (indexesChanged) - { - RaisePropertyChanged(nameof(SelectedIndexes)); - RaisePropertyChanged(nameof(SelectedItems)); + if (oldAnchorIndex != _anchorIndex) + { + indexesChanged = true; + RaisePropertyChanged(nameof(AnchorIndex)); + } + + if (indexesChanged) + { + RaisePropertyChanged(nameof(SelectedIndexes)); + } + + if (indexesChanged || operation.IsSourceUpdate) + { + RaisePropertyChanged(nameof(SelectedItems)); + } } } finally diff --git a/src/Avalonia.Controls/TabControl.cs b/src/Avalonia.Controls/TabControl.cs index f81e355a7d..306a9d3e6a 100644 --- a/src/Avalonia.Controls/TabControl.cs +++ b/src/Avalonia.Controls/TabControl.cs @@ -1,3 +1,4 @@ +using System.ComponentModel; using System.Linq; using Avalonia.Collections; using Avalonia.Controls.Generators; @@ -66,7 +67,7 @@ namespace Avalonia.Controls SelectionModeProperty.OverrideDefaultValue(SelectionMode.AlwaysSelected); ItemsPanelProperty.OverrideDefaultValue(DefaultPanel); AffectsMeasure(TabStripPlacementProperty); - SelectedIndexProperty.Changed.AddClassHandler((x, e) => x.UpdateSelectedContent(e)); + SelectedItemProperty.Changed.AddClassHandler((x, e) => x.UpdateSelectedContent()); } /// @@ -145,55 +146,27 @@ namespace Avalonia.Controls protected override void OnContainersMaterialized(ItemContainerEventArgs e) { base.OnContainersMaterialized(e); - - if (SelectedContent != null || SelectedIndex == -1) - { - return; - } - - var container = (TabItem)ItemContainerGenerator.ContainerFromIndex(SelectedIndex); - - if (container == null) - { - return; - } - - UpdateSelectedContent(container); + UpdateSelectedContent(); } - private void UpdateSelectedContent(AvaloniaPropertyChangedEventArgs e) + protected override void OnContainersRecycled(ItemContainerEventArgs e) { - var index = (int)e.NewValue; - - if (index == -1) - { - SelectedContentTemplate = null; - - SelectedContent = null; - - return; - } - - var container = (TabItem)ItemContainerGenerator.ContainerFromIndex(index); - - if (container == null) - { - return; - } - - UpdateSelectedContent(container); + base.OnContainersRecycled(e); + UpdateSelectedContent(); } - private void UpdateSelectedContent(IContentControl item) + private void UpdateSelectedContent() { - if (SelectedContentTemplate != item.ContentTemplate) + if (SelectedIndex == -1) { - SelectedContentTemplate = item.ContentTemplate; + SelectedContent = SelectedContentTemplate = null; } - - if (SelectedContent != item.Content) + else { - SelectedContent = item.Content; + var container = SelectedItem as IContentControl ?? + ItemContainerGenerator.ContainerFromIndex(SelectedIndex) as IContentControl; + SelectedContentTemplate = container?.ContentTemplate; + SelectedContent = container?.Content; } } diff --git a/src/Avalonia.Controls/Utils/SelectedItemsSync.cs b/src/Avalonia.Controls/Utils/SelectedItemsSync.cs deleted file mode 100644 index 83b62c7b6e..0000000000 --- a/src/Avalonia.Controls/Utils/SelectedItemsSync.cs +++ /dev/null @@ -1,283 +0,0 @@ -using System; -using System.Collections; -using System.Collections.Specialized; -using System.ComponentModel; -using System.Linq; -using Avalonia.Collections; -using Avalonia.Controls.Selection; - -#nullable enable - -namespace Avalonia.Controls.Utils -{ - /// - /// Synchronizes an with a list of SelectedItems. - /// - internal class SelectedItemsSync : IDisposable - { - private ISelectionModel _selectionModel; - private IList _selectedItems; - private bool _updatingItems; - private bool _updatingModel; - - public SelectedItemsSync(ISelectionModel model) - { - _selectionModel = model ?? throw new ArgumentNullException(nameof(model)); - _selectedItems = new AvaloniaList(); - SyncSelectedItemsWithSelectionModel(); - SubscribeToSelectedItems(_selectedItems); - SubscribeToSelectionModel(model); - } - - public ISelectionModel SelectionModel - { - get => _selectionModel; - set - { - if (_selectionModel != value) - { - value = value ?? throw new ArgumentNullException(nameof(value)); - UnsubscribeFromSelectionModel(_selectionModel); - _selectionModel = value; - SubscribeToSelectionModel(_selectionModel); - SyncSelectedItemsWithSelectionModel(); - } - } - } - - public IList SelectedItems - { - get => _selectedItems; - set - { - value ??= new AvaloniaList(); - - if (_selectedItems != value) - { - if (value.IsFixedSize) - { - throw new NotSupportedException( - "Cannot assign fixed size selection to SelectedItems."); - } - - UnsubscribeFromSelectedItems(_selectedItems); - _selectedItems = value; - SubscribeToSelectedItems(_selectedItems); - SyncSelectionModelWithSelectedItems(); - } - } - } - - public void Dispose() - { - UnsubscribeFromSelectedItems(_selectedItems); - UnsubscribeFromSelectionModel(_selectionModel); - } - - private void SyncSelectedItemsWithSelectionModel() - { - _updatingItems = true; - - try - { - _selectedItems.Clear(); - - if (_selectionModel.Source is object) - { - foreach (var i in _selectionModel.SelectedItems) - { - _selectedItems.Add(i); - } - } - } - finally - { - _updatingItems = false; - } - } - - private void SyncSelectionModelWithSelectedItems() - { - _updatingModel = true; - - try - { - if (_selectionModel.Source is object) - { - using (_selectionModel.BatchUpdate()) - { - SelectionModel.Clear(); - Add(_selectedItems); - } - } - } - finally - { - _updatingModel = false; - } - } - - private void SelectedItemsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e) - { - if (_updatingItems) - { - return; - } - - if (_selectedItems == null) - { - throw new AvaloniaInternalException("CollectionChanged raised but we don't have items."); - } - - void Remove() - { - foreach (var i in e.OldItems) - { - var index = IndexOf(SelectionModel.Source, i); - - if (index != -1) - { - SelectionModel.Deselect(index); - } - } - } - - try - { - using var operation = SelectionModel.BatchUpdate(); - - _updatingModel = true; - - switch (e.Action) - { - case NotifyCollectionChangedAction.Add: - Add(e.NewItems); - break; - case NotifyCollectionChangedAction.Remove: - Remove(); - break; - case NotifyCollectionChangedAction.Replace: - Remove(); - Add(e.NewItems); - break; - case NotifyCollectionChangedAction.Reset: - SelectionModel.Clear(); - Add(_selectedItems); - break; - } - } - finally - { - _updatingModel = false; - } - } - - private void Add(IList newItems) - { - foreach (var i in newItems) - { - var index = IndexOf(SelectionModel.Source, i); - - if (index != -1) - { - SelectionModel.Select(index); - } - } - } - - private void SelectionModelPropertyChanged(object sender, PropertyChangedEventArgs e) - { - if (e.PropertyName == nameof(ISelectionModel.Source)) - { - if (_selectedItems.Count > 0) - { - SyncSelectionModelWithSelectedItems(); - } - else - { - SyncSelectedItemsWithSelectionModel(); - } - } - } - - private void SelectionModelSelectionChanged(object sender, SelectionModelSelectionChangedEventArgs e) - { - if (_updatingModel || _selectionModel.Source is null) - { - return; - } - - try - { - var deselected = e.DeselectedItems.ToList(); - var selected = e.SelectedItems.ToList(); - - _updatingItems = true; - - foreach (var i in deselected) - { - _selectedItems.Remove(i); - } - - foreach (var i in selected) - { - _selectedItems.Add(i); - } - } - finally - { - _updatingItems = false; - } - } - - private void SelectionModelSourceReset(object sender, EventArgs e) - { - SyncSelectionModelWithSelectedItems(); - } - - - private void SubscribeToSelectedItems(IList selectedItems) - { - if (selectedItems is INotifyCollectionChanged incc) - { - incc.CollectionChanged += SelectedItemsCollectionChanged; - } - } - - private void SubscribeToSelectionModel(ISelectionModel model) - { - model.PropertyChanged += SelectionModelPropertyChanged; - model.SelectionChanged += SelectionModelSelectionChanged; - model.SourceReset += SelectionModelSourceReset; - } - - private void UnsubscribeFromSelectedItems(IList selectedItems) - { - if (selectedItems is INotifyCollectionChanged incc) - { - incc.CollectionChanged -= SelectedItemsCollectionChanged; - } - } - - private void UnsubscribeFromSelectionModel(ISelectionModel model) - { - model.PropertyChanged -= SelectionModelPropertyChanged; - model.SelectionChanged -= SelectionModelSelectionChanged; - model.SourceReset -= SelectionModelSourceReset; - } - - private static int IndexOf(object? source, object? item) - { - if (source is IList l) - { - return l.IndexOf(item); - } - else if (source is ItemsSourceView v) - { - return v.IndexOf(item); - } - - return -1; - } - } -} diff --git a/src/Avalonia.DesignerSupport/Remote/HtmlTransport/HtmlTransport.cs b/src/Avalonia.DesignerSupport/Remote/HtmlTransport/HtmlTransport.cs index 55e2df8890..03dcf85b87 100644 --- a/src/Avalonia.DesignerSupport/Remote/HtmlTransport/HtmlTransport.cs +++ b/src/Avalonia.DesignerSupport/Remote/HtmlTransport/HtmlTransport.cs @@ -38,11 +38,13 @@ namespace Avalonia.DesignerSupport.Remote.HtmlTransport public HtmlWebSocketTransport(IAvaloniaRemoteTransportConnection signalTransport, Uri listenUri) { if (listenUri.Scheme != "http") - throw new ArgumentException("listenUri"); + throw new ArgumentException("URI scheme is not HTTP.", nameof(listenUri)); var resourcePrefix = "Avalonia.DesignerSupport.Remote.HtmlTransport.webapp.build."; _resources = typeof(HtmlWebSocketTransport).Assembly.GetManifestResourceNames() - .Where(r => r.StartsWith(resourcePrefix) && r.EndsWith(".gz")).ToDictionary( + .Where(r => r.StartsWith(resourcePrefix, StringComparison.OrdinalIgnoreCase) + && r.EndsWith(".gz", StringComparison.OrdinalIgnoreCase)) + .ToDictionary( r => r.Substring(resourcePrefix.Length).Substring(0,r.Length-resourcePrefix.Length-3), r => { diff --git a/src/Avalonia.Input/KeyGesture.cs b/src/Avalonia.Input/KeyGesture.cs index ad447794bc..aa6fcc8bff 100644 --- a/src/Avalonia.Input/KeyGesture.cs +++ b/src/Avalonia.Input/KeyGesture.cs @@ -1,7 +1,5 @@ using System; using System.Collections.Generic; -using System.Linq; -using System.Runtime.InteropServices; using System.Text; namespace Avalonia.Input @@ -29,7 +27,7 @@ namespace Avalonia.Input KeyModifiers = modifiers; } - public bool Equals(KeyGesture other) + public bool Equals(KeyGesture? other) { if (ReferenceEquals(null, other)) return false; if (ReferenceEquals(this, other)) return true; @@ -37,12 +35,12 @@ namespace Avalonia.Input return Key == other.Key && KeyModifiers == other.KeyModifiers; } - public override bool Equals(object obj) + public override bool Equals(object? obj) { if (ReferenceEquals(null, obj)) return false; if (ReferenceEquals(this, obj)) return true; - return obj is KeyGesture && Equals((KeyGesture)obj); + return obj is KeyGesture gesture && Equals(gesture); } public override int GetHashCode() @@ -53,12 +51,12 @@ namespace Avalonia.Input } } - public static bool operator ==(KeyGesture left, KeyGesture right) + public static bool operator ==(KeyGesture? left, KeyGesture? right) { return Equals(left, right); } - public static bool operator !=(KeyGesture left, KeyGesture right) + public static bool operator !=(KeyGesture? left, KeyGesture? right) { return !Equals(left, right); } diff --git a/src/Avalonia.Input/PointerEventArgs.cs b/src/Avalonia.Input/PointerEventArgs.cs index 1cbddf89aa..451f80b1df 100644 --- a/src/Avalonia.Input/PointerEventArgs.cs +++ b/src/Avalonia.Input/PointerEventArgs.cs @@ -86,14 +86,14 @@ namespace Avalonia.Input } [Obsolete("Use GetCurrentPoint")] - public PointerPoint GetPointerPoint(IVisual relativeTo) => GetCurrentPoint(relativeTo); + public PointerPoint GetPointerPoint(IVisual? relativeTo) => GetCurrentPoint(relativeTo); /// /// Returns the PointerPoint associated with the current event /// /// The visual which coordinate system to use. Pass null for toplevel coordinate system /// - public PointerPoint GetCurrentPoint(IVisual relativeTo) + public PointerPoint GetCurrentPoint(IVisual? relativeTo) => new PointerPoint(Pointer, GetPosition(relativeTo), _properties); /// diff --git a/src/Avalonia.OpenGL/Angle/AngleEglInterface.cs b/src/Avalonia.OpenGL/Angle/AngleEglInterface.cs index 375b93c27c..8565d99b45 100644 --- a/src/Avalonia.OpenGL/Angle/AngleEglInterface.cs +++ b/src/Avalonia.OpenGL/Angle/AngleEglInterface.cs @@ -17,14 +17,19 @@ namespace Avalonia.OpenGL.Angle static Func LoadAngle() { - if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) - throw new PlatformNotSupportedException(); + if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) { var disp = eglGetProcAddress("eglGetPlatformDisplayEXT"); + if (disp == IntPtr.Zero) + { throw new OpenGlException("libegl.dll doesn't have eglGetPlatformDisplayEXT entry point"); + } + return eglGetProcAddress; } + + throw new PlatformNotSupportedException(); } } diff --git a/src/Avalonia.OpenGL/AngleOptions.cs b/src/Avalonia.OpenGL/AngleOptions.cs index 84744288ed..0807eb7ab4 100644 --- a/src/Avalonia.OpenGL/AngleOptions.cs +++ b/src/Avalonia.OpenGL/AngleOptions.cs @@ -10,6 +10,12 @@ namespace Avalonia.OpenGL DirectX11 } + public IList GlProfiles { get; set; } = new List + { + new GlVersion(GlProfileType.OpenGLES, 3, 0), + new GlVersion(GlProfileType.OpenGLES, 2, 0) + }; + public IList AllowedPlatformApis { get; set; } = null; } } diff --git a/src/Avalonia.OpenGL/EglDisplay.cs b/src/Avalonia.OpenGL/EglDisplay.cs index 7b194e4346..7f41e75d6a 100644 --- a/src/Avalonia.OpenGL/EglDisplay.cs +++ b/src/Avalonia.OpenGL/EglDisplay.cs @@ -1,5 +1,6 @@ using System; using System.Collections.Generic; +using System.Linq; using System.Runtime.InteropServices; using Avalonia.Platform.Interop; using static Avalonia.OpenGL.EglConsts; @@ -61,20 +62,43 @@ namespace Avalonia.OpenGL if (!_egl.Initialize(_display, out var major, out var minor)) throw OpenGlException.GetFormattedException("eglInitialize", _egl); - foreach (var cfg in new[] + var glProfiles = AvaloniaLocator.Current.GetService()?.GlProfiles + ?? new[] + { + new GlVersion(GlProfileType.OpenGLES, 3, 0), + new GlVersion(GlProfileType.OpenGLES, 2, 0) + }; + + var cfgs = glProfiles.Select(x => { - new + var typeBit = EGL_OPENGL_ES3_BIT; + + switch (x.Major) + { + case 2: + typeBit = EGL_OPENGL_ES2_BIT; + break; + + case 1: + typeBit = EGL_OPENGL_ES_BIT; + break; + } + + return new { Attributes = new[] { - EGL_CONTEXT_CLIENT_VERSION, 2, + EGL_CONTEXT_MAJOR_VERSION, x.Major, + EGL_CONTEXT_MINOR_VERSION, x.Minor, EGL_NONE }, Api = EGL_OPENGL_ES_API, - RenderableTypeBit = EGL_OPENGL_ES2_BIT, - Version = new GlVersion(GlProfileType.OpenGLES, 2, 0) - } - }) + RenderableTypeBit = typeBit, + Version = x + }; + }); + + foreach (var cfg in cfgs) { if (!_egl.BindApi(cfg.Api)) continue; diff --git a/src/Avalonia.X11/Glx/GlxDisplay.cs b/src/Avalonia.X11/Glx/GlxDisplay.cs index 903d6b570b..b82895d12c 100644 --- a/src/Avalonia.X11/Glx/GlxDisplay.cs +++ b/src/Avalonia.X11/Glx/GlxDisplay.cs @@ -18,7 +18,7 @@ namespace Avalonia.X11.Glx public XVisualInfo* VisualInfo => _visual; public GlxContext DeferredContext { get; } public GlxInterface Glx { get; } = new GlxInterface(); - public GlxDisplay(X11Info x11, List probeProfiles) + public GlxDisplay(X11Info x11, IList probeProfiles) { _x11 = x11; _probeProfiles = probeProfiles.ToList(); diff --git a/src/Avalonia.X11/Glx/GlxPlatformFeature.cs b/src/Avalonia.X11/Glx/GlxPlatformFeature.cs index e3250e6733..ad3a54bcc1 100644 --- a/src/Avalonia.X11/Glx/GlxPlatformFeature.cs +++ b/src/Avalonia.X11/Glx/GlxPlatformFeature.cs @@ -12,7 +12,7 @@ namespace Avalonia.X11.Glx public GlxContext DeferredContext { get; private set; } public IGlContext MainContext => DeferredContext; - public static bool TryInitialize(X11Info x11, List glProfiles) + public static bool TryInitialize(X11Info x11, IList glProfiles) { var feature = TryCreate(x11, glProfiles); if (feature != null) @@ -24,7 +24,7 @@ namespace Avalonia.X11.Glx return false; } - public static GlxGlPlatformFeature TryCreate(X11Info x11, List glProfiles) + public static GlxGlPlatformFeature TryCreate(X11Info x11, IList glProfiles) { try { diff --git a/src/Avalonia.X11/X11Platform.cs b/src/Avalonia.X11/X11Platform.cs index 7f3255d4da..d7bd81db98 100644 --- a/src/Avalonia.X11/X11Platform.cs +++ b/src/Avalonia.X11/X11Platform.cs @@ -103,7 +103,7 @@ namespace Avalonia public bool UseDBusMenu { get; set; } public bool UseDeferredRendering { get; set; } = true; - public List GlProfiles { get; set; } = new List + public IList GlProfiles { get; set; } = new List { new GlVersion(GlProfileType.OpenGL, 4, 0), new GlVersion(GlProfileType.OpenGL, 3, 2), @@ -113,7 +113,7 @@ namespace Avalonia new GlVersion(GlProfileType.OpenGLES, 2, 0) }; - public List GlxRendererBlacklist { get; set; } = new List + public IList GlxRendererBlacklist { get; set; } = new List { // llvmpipe is a software GL rasterizer. If it's returned by glGetString, // that usually means that something in the system is horribly misconfigured diff --git a/tests/Avalonia.Controls.UnitTests/Primitives/SelectingItemsControlTests.cs b/tests/Avalonia.Controls.UnitTests/Primitives/SelectingItemsControlTests.cs index 00d148093a..192d6e0286 100644 --- a/tests/Avalonia.Controls.UnitTests/Primitives/SelectingItemsControlTests.cs +++ b/tests/Avalonia.Controls.UnitTests/Primitives/SelectingItemsControlTests.cs @@ -554,6 +554,44 @@ namespace Avalonia.Controls.UnitTests.Primitives Assert.False(items.Single().IsSelected); } + [Fact] + public void Removing_Selected_Item_Should_Update_Selection_With_AlwaysSelected() + { + var item0 = new Item(); + var item1 = new Item(); + var items = new AvaloniaList + { + item0, + item1, + }; + + var target = new TestSelector + { + Items = items, + Template = Template(), + SelectionMode = SelectionMode.AlwaysSelected, + }; + + Prepare(target); + target.SelectedIndex = 1; + + Assert.Equal(items[1], target.SelectedItem); + Assert.Equal(1, target.SelectedIndex); + + SelectionChangedEventArgs receivedArgs = null; + + target.SelectionChanged += (_, args) => receivedArgs = args; + + items.RemoveAt(1); + + Assert.Same(item0, target.SelectedItem); + Assert.Equal(0, target.SelectedIndex); + Assert.NotNull(receivedArgs); + Assert.Equal(new[] { item0 }, receivedArgs.AddedItems); + Assert.Equal(new[] { item1 }, receivedArgs.RemovedItems); + Assert.True(items.Single().IsSelected); + } + [Fact] public void Removing_Selected_Item_Should_Clear_Selection_With_BeginInit() { @@ -771,6 +809,186 @@ namespace Avalonia.Controls.UnitTests.Primitives Assert.True(called); } + [Fact] + public void Setting_SelectedIndex_Should_Raise_PropertyChanged_Events() + { + var items = new ObservableCollection { "foo", "bar", "baz" }; + + var target = new TestSelector + { + Items = items, + Template = Template(), + }; + + var selectedIndexRaised = 0; + var selectedItemRaised = 0; + + target.PropertyChanged += (s, e) => + { + if (e.Property == SelectingItemsControl.SelectedIndexProperty) + { + Assert.Equal(-1, e.OldValue); + Assert.Equal(1, e.NewValue); + ++selectedIndexRaised; + } + else if (e.Property == SelectingItemsControl.SelectedItemProperty) + { + Assert.Null(e.OldValue); + Assert.Equal("bar", e.NewValue); + ++selectedItemRaised; + } + }; + + target.SelectedIndex = 1; + + Assert.Equal(1, selectedIndexRaised); + Assert.Equal(1, selectedItemRaised); + } + + [Fact] + public void Removing_Selected_Item_Should_Raise_PropertyChanged_Events() + { + var items = new ObservableCollection { "foo", "bar", "baz" }; + + var target = new TestSelector + { + Items = items, + Template = Template(), + }; + + var selectedIndexRaised = 0; + var selectedItemRaised = 0; + target.SelectedIndex = 1; + + target.PropertyChanged += (s, e) => + { + if (e.Property == SelectingItemsControl.SelectedIndexProperty) + { + Assert.Equal(1, e.OldValue); + Assert.Equal(-1, e.NewValue); + ++selectedIndexRaised; + } + else if (e.Property == SelectingItemsControl.SelectedItemProperty) + { + Assert.Equal("bar", e.OldValue); + Assert.Null(e.NewValue); + } + }; + + items.RemoveAt(1); + + Assert.Equal(1, selectedIndexRaised); + Assert.Equal(0, selectedItemRaised); + } + + [Fact] + public void Removing_Selected_Item0_Should_Raise_PropertyChanged_Events_With_AlwaysSelected() + { + var items = new ObservableCollection { "foo", "bar", "baz" }; + + var target = new TestSelector + { + Items = items, + Template = Template(), + SelectionMode = SelectionMode.AlwaysSelected, + }; + + var selectedIndexRaised = 0; + var selectedItemRaised = 0; + target.SelectedIndex = 0; + + target.PropertyChanged += (s, e) => + { + if (e.Property == SelectingItemsControl.SelectedIndexProperty) + { + ++selectedIndexRaised; + } + else if (e.Property == SelectingItemsControl.SelectedItemProperty) + { + Assert.Equal("foo", e.OldValue); + Assert.Equal("bar", e.NewValue); + ++selectedItemRaised; + } + }; + + items.RemoveAt(0); + + Assert.Equal(0, selectedIndexRaised); + Assert.Equal(1, selectedItemRaised); + } + + [Fact] + public void Removing_Selected_Item1_Should_Raise_PropertyChanged_Events_With_AlwaysSelected() + { + var items = new ObservableCollection { "foo", "bar", "baz" }; + + var target = new TestSelector + { + Items = items, + Template = Template(), + SelectionMode = SelectionMode.AlwaysSelected, + }; + + var selectedIndexRaised = 0; + var selectedItemRaised = 0; + target.SelectedIndex = 1; + + target.PropertyChanged += (s, e) => + { + if (e.Property == SelectingItemsControl.SelectedIndexProperty) + { + Assert.Equal(1, e.OldValue); + Assert.Equal(0, e.NewValue); + ++selectedIndexRaised; + } + else if (e.Property == SelectingItemsControl.SelectedItemProperty) + { + Assert.Equal("bar", e.OldValue); + Assert.Equal("foo", e.NewValue); + } + }; + + items.RemoveAt(1); + + Assert.Equal(1, selectedIndexRaised); + Assert.Equal(0, selectedItemRaised); + } + + [Fact] + public void Removing_Item_Before_Selection_Should_Raise_PropertyChanged_Events() + { + var items = new ObservableCollection { "foo", "bar", "baz" }; + + var target = new SelectingItemsControl + { + Items = items, + Template = Template(), + }; + + var selectedIndexRaised = 0; + var selectedItemRaised = 0; + target.SelectedIndex = 1; + + target.PropertyChanged += (s, e) => + { + if (e.Property == SelectingItemsControl.SelectedIndexProperty) + { + Assert.Equal(1, e.OldValue); + Assert.Equal(0, e.NewValue); + ++selectedIndexRaised; + } + else if (e.Property == SelectingItemsControl.SelectedItemProperty) + { + ++selectedItemRaised; + } + }; + + items.RemoveAt(0); + + Assert.Equal(1, selectedIndexRaised); + Assert.Equal(0, selectedItemRaised); + } + [Fact] public void Order_Of_Setting_Items_And_SelectedIndex_During_Initialization_Should_Not_Matter() { @@ -1184,12 +1402,36 @@ namespace Avalonia.Controls.UnitTests.Primitives Items = items, }; + var raised = false; + Prepare(target); + target.AddHandler(Control.RequestBringIntoViewEvent, (s, e) => raised = true); + target.SelectedIndex = 2; + + Assert.True(raised); + } + + [Fact] + public void AutoScrollToSelectedItem_Causes_Scroll_To_Initial_SelectedItem() + { + var items = new ObservableCollection + { + "Foo", + "Bar", + "Baz" + }; + + var target = new ListBox + { + Template = Template(), + Items = items, + }; var raised = false; - target.AddHandler(Control.RequestBringIntoViewEvent, (s, e) => raised = true); + target.AddHandler(Control.RequestBringIntoViewEvent, (s, e) => raised = true); target.SelectedIndex = 2; + Prepare(target); Assert.True(raised); } @@ -1233,6 +1475,99 @@ namespace Avalonia.Controls.UnitTests.Primitives } } + [Fact] + public void AutoScrollToSelectedItem_Scrolls_When_Reattached_To_Visual_Tree_If_Selection_Changed_While_Detached_From_Visual_Tree() + { + var items = new ObservableCollection + { + "Foo", + "Bar", + "Baz" + }; + + var target = new ListBox + { + Template = Template(), + Items = items, + SelectedIndex = 2, + }; + + var raised = false; + + Prepare(target); + + var root = (TestRoot)target.Parent; + + target.AddHandler(Control.RequestBringIntoViewEvent, (s, e) => raised = true); + + root.Child = null; + target.SelectedIndex = 1; + root.Child = target; + + Assert.True(raised); + } + + [Fact] + public void AutoScrollToSelectedItem_Doesnt_Scroll_If_Reattached_To_Visual_Tree_With_No_Selection_Change() + { + var items = new ObservableCollection + { + "Foo", + "Bar", + "Baz" + }; + + var target = new ListBox + { + Template = Template(), + Items = items, + SelectedIndex = 2, + }; + + var raised = false; + + Prepare(target); + + var root = (TestRoot)target.Parent; + + target.AddHandler(Control.RequestBringIntoViewEvent, (s, e) => raised = true); + + root.Child = null; + root.Child = target; + + Assert.False(raised); + } + + [Fact] + public void AutoScrollToSelectedItem_Causes_Scroll_When_Turned_On() + { + var items = new ObservableCollection + { + "Foo", + "Bar", + "Baz" + }; + + var target = new ListBox + { + Template = Template(), + Items = items, + AutoScrollToSelectedItem = false, + }; + + Prepare(target); + + var raised = false; + target.AddHandler(Control.RequestBringIntoViewEvent, (s, e) => raised = true); + target.SelectedIndex = 2; + + Assert.False(raised); + + target.AutoScrollToSelectedItem = true; + + Assert.True(raised); + } + [Fact] public void Can_Set_Both_SelectedItem_And_SelectedItems_During_Initialization() { @@ -1376,6 +1711,108 @@ namespace Avalonia.Controls.UnitTests.Primitives Assert.Equal(new[] { "foo" }, target.SelectedItems); } + [Fact] + public void Preserves_Initial_SelectedItems_When_Bound() + { + // Issue #4272 (there are two issues there, this addresses the second one). + var vm = new SelectionViewModel + { + Items = { "foo", "bar", "baz" }, + SelectedItems = { "bar" }, + }; + + var target = new ListBox + { + [!ListBox.ItemsProperty] = new Binding("Items"), + [!ListBox.SelectedItemsProperty] = new Binding("SelectedItems"), + DataContext = vm, + }; + + Prepare(target); + + Assert.Equal(1, target.SelectedIndex); + Assert.Equal(new[] { 1 }, target.Selection.SelectedIndexes); + Assert.Equal("bar", target.SelectedItem); + Assert.Equal(new[] { "bar" }, target.SelectedItems); + } + + [Fact] + public void Preserves_SelectedItem_When_Items_Changed() + { + // Issue #4048 + var target = new SelectingItemsControl + { + Items = new[] { "foo", "bar", "baz"}, + SelectedItem = "bar", + }; + + Prepare(target); + + Assert.Equal(1, target.SelectedIndex); + Assert.Equal("bar", target.SelectedItem); + + target.Items = new[] { "qux", "foo", "bar" }; + + Assert.Equal(2, target.SelectedIndex); + Assert.Equal("bar", target.SelectedItem); + } + + [Fact] + public void Setting_SelectedItems_Raises_PropertyChanged() + { + var target = new TestSelector + { + Items = new[] { "foo", "bar", "baz" }, + }; + + var raised = 0; + var newValue = new AvaloniaList(); + + Prepare(target); + + target.PropertyChanged += (s, e) => + { + if (e.Property == ListBox.SelectedItemsProperty) + { + Assert.Null(e.OldValue); + Assert.Same(newValue, e.NewValue); + ++raised; + } + }; + + target.SelectedItems = newValue; + + Assert.Equal(1, raised); + } + + [Fact] + public void Setting_Selection_Raises_SelectedItems_PropertyChanged() + { + var target = new TestSelector + { + Items = new[] { "foo", "bar", "baz" }, + }; + + var raised = 0; + var oldValue = target.SelectedItems; + + Prepare(target); + + target.PropertyChanged += (s, e) => + { + if (e.Property == ListBox.SelectedItemsProperty) + { + Assert.Same(oldValue, e.OldValue); + Assert.Null(e.NewValue); + ++raised; + } + }; + + target.Selection = new SelectionModel(); + + Assert.Equal(1, raised); + } + private static void Prepare(SelectingItemsControl target) { var root = new TestRoot @@ -1445,6 +1882,7 @@ namespace Avalonia.Controls.UnitTests.Primitives public SelectionViewModel() { Items = new ObservableCollection(); + SelectedItems = new ObservableCollection(); } public int SelectedIndex @@ -1458,6 +1896,7 @@ namespace Avalonia.Controls.UnitTests.Primitives } public ObservableCollection Items { get; } + public ObservableCollection SelectedItems { get; } } private class RootWithItems : TestRoot @@ -1484,6 +1923,12 @@ namespace Avalonia.Controls.UnitTests.Primitives set => base.Selection = value; } + public new IList SelectedItems + { + get => base.SelectedItems; + set => base.SelectedItems = value; + } + public new SelectionMode SelectionMode { get => base.SelectionMode; diff --git a/tests/Avalonia.Controls.UnitTests/Selection/InternalSelectionModelTests.cs b/tests/Avalonia.Controls.UnitTests/Selection/InternalSelectionModelTests.cs new file mode 100644 index 0000000000..b64812e290 --- /dev/null +++ b/tests/Avalonia.Controls.UnitTests/Selection/InternalSelectionModelTests.cs @@ -0,0 +1,254 @@ +using System; +using System.Collections; +using System.Collections.Generic; +using System.Collections.Specialized; +using Avalonia.Collections; +using Avalonia.Controls.Selection; +using Xunit; + +namespace Avalonia.Controls.UnitTests.Selection +{ + public class InternalSelectionModelTests + { + [Fact] + public void Selecting_Item_Adds_To_WritableSelectedItems() + { + var target = CreateTarget(); + + target.Select(0); + + Assert.Equal(new[] { "foo" }, target.WritableSelectedItems); + } + + [Fact] + public void Selecting_Duplicate_On_Model_Adds_To_WritableSelectedItems() + { + var target = CreateTarget(source: new[] { "foo", "bar", "baz", "foo", "bar", "baz" }); + + target.SelectRange(1, 4); + + Assert.Equal(new[] { "bar", "baz", "foo", "bar" }, target.WritableSelectedItems); + } + + [Fact] + public void Deselecting_On_Model_Removes_SelectedItem() + { + var target = CreateTarget(); + + target.SelectRange(1, 2); + target.Deselect(1); + + Assert.Equal(new[] { "baz" }, target.WritableSelectedItems); + } + + [Fact] + public void Deselecting_Duplicate_On_Model_Removes_SelectedItem() + { + var target = CreateTarget(source: new[] { "foo", "bar", "baz", "foo", "bar", "baz" }); + + target.SelectRange(1, 2); + target.Select(4); + target.Deselect(4); + + Assert.Equal(new[] { "baz", "bar" }, target.WritableSelectedItems); + } + + [Fact] + public void Adding_To_WritableSelectedItems_Selects_On_Model() + { + var target = CreateTarget(); + + target.SelectRange(1, 2); + target.WritableSelectedItems.Add("foo"); + + Assert.Equal(new[] { 0, 1, 2 }, target.SelectedIndexes); + Assert.Equal(new[] { "bar", "baz", "foo" }, target.WritableSelectedItems); + } + + [Fact] + public void Removing_From_WritableSelectedItems_Deselects_On_Model() + { + var target = CreateTarget(); + + target.SelectRange(1, 2); + target.WritableSelectedItems.Remove("baz"); + + Assert.Equal(new[] { 1 }, target.SelectedIndexes); + Assert.Equal(new[] { "bar" }, target.WritableSelectedItems); + } + + [Fact] + public void Replacing_SelectedItem_Updates_Model() + { + var target = CreateTarget(); + + target.SelectRange(1, 2); + target.WritableSelectedItems[0] = "foo"; + + Assert.Equal(new[] { 0, 2 }, target.SelectedIndexes); + Assert.Equal(new[] { "foo", "baz" }, target.WritableSelectedItems); + } + + [Fact] + public void Clearing_WritableSelectedItems_Updates_Model() + { + var target = CreateTarget(); + + target.WritableSelectedItems.Clear(); + + Assert.Empty(target.SelectedIndexes); + } + + [Fact] + public void Setting_WritableSelectedItems_Updates_Model() + { + var target = CreateTarget(); + var oldItems = target.WritableSelectedItems; + + var newItems = new AvaloniaList { "foo", "baz" }; + target.WritableSelectedItems = newItems; + + Assert.Equal(new[] { 0, 2 }, target.SelectedIndexes); + Assert.Same(newItems, target.WritableSelectedItems); + Assert.NotSame(oldItems, target.WritableSelectedItems); + Assert.Equal(new[] { "foo", "baz" }, newItems); + } + + [Fact] + public void Setting_Items_To_Null_Clears_Selection() + { + var target = CreateTarget(); + + target.SelectRange(1, 2); + target.WritableSelectedItems = null; + + Assert.Empty(target.SelectedIndexes); + } + + [Fact] + public void Setting_Items_To_Null_Creates_Empty_Items() + { + var target = CreateTarget(); + var oldItems = target.WritableSelectedItems; + + target.WritableSelectedItems = null; + + Assert.NotNull(target.WritableSelectedItems); + Assert.NotSame(oldItems, target.WritableSelectedItems); + Assert.IsType>(target.WritableSelectedItems); + } + + [Fact] + public void Adds_Null_WritableSelectedItems_When_Source_Is_Null() + { + var target = CreateTarget(nullSource: true); + + target.SelectRange(1, 2); + Assert.Equal(new object[] { null, null }, target.WritableSelectedItems); + } + + [Fact] + public void Updates_WritableSelectedItems_When_Source_Changes_From_Null() + { + var target = CreateTarget(nullSource: true); + + target.SelectRange(1, 2); + Assert.Equal(new object[] { null, null }, target.WritableSelectedItems); + + target.Source = new[] { "foo", "bar", "baz" }; + Assert.Equal(new[] { "bar", "baz" }, target.WritableSelectedItems); + } + + [Fact] + public void Updates_WritableSelectedItems_When_Source_Changes_To_Null() + { + var target = CreateTarget(); + + target.SelectRange(1, 2); + Assert.Equal(new[] { "bar", "baz" }, target.WritableSelectedItems); + + target.Source = null; + Assert.Equal(new object[] { null, null }, target.WritableSelectedItems); + } + + [Fact] + public void WritableSelectedItems_Can_Be_Set_Before_Source() + { + var target = CreateTarget(nullSource: true); + var items = new AvaloniaList { "foo", "bar", "baz" }; + var WritableSelectedItems = new AvaloniaList { "bar" }; + + target.WritableSelectedItems = WritableSelectedItems; + target.Source = items; + + Assert.Equal(1, target.SelectedIndex); + } + + [Fact] + public void Does_Not_Accept_Fixed_Size_Items() + { + var target = CreateTarget(); + + Assert.Throws(() => + target.WritableSelectedItems = new[] { "foo", "bar", "baz" }); + } + + [Fact] + public void Restores_Selection_On_Items_Reset() + { + var items = new ResettingCollection(new[] { "foo", "bar", "baz" }); + var target = CreateTarget(source: items); + + target.SelectedIndex = 1; + items.Reset(new[] { "baz", "foo", "bar" }); + + Assert.Equal(2, target.SelectedIndex); + } + + [Fact] + public void Preserves_Selection_On_Source_Changed() + { + var target = CreateTarget(); + + target.SelectedIndex = 1; + target.Source = new[] { "baz", "foo", "bar" }; + + Assert.Equal(2, target.SelectedIndex); + } + + private static InternalSelectionModel CreateTarget( + bool singleSelect = false, + IList source = null, + bool nullSource = false) + { + source ??= !nullSource ? new[] { "foo", "bar", "baz" } : null; + + var result = new InternalSelectionModel + { + SingleSelect = singleSelect, + }; + + ((ISelectionModel)result).Source = source; + return result; + } + + private class ResettingCollection : List, INotifyCollectionChanged + { + public ResettingCollection(IEnumerable items) + { + AddRange(items); + } + + public void Reset(IEnumerable items) + { + Clear(); + AddRange(items); + CollectionChanged?.Invoke( + this, + new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset)); + } + + public event NotifyCollectionChangedEventHandler CollectionChanged; + } + } +} diff --git a/tests/Avalonia.Controls.UnitTests/Selection/SelectionModelTests_Multiple.cs b/tests/Avalonia.Controls.UnitTests/Selection/SelectionModelTests_Multiple.cs index 3eddd35465..5d0c6d31e1 100644 --- a/tests/Avalonia.Controls.UnitTests/Selection/SelectionModelTests_Multiple.cs +++ b/tests/Avalonia.Controls.UnitTests/Selection/SelectionModelTests_Multiple.cs @@ -121,6 +121,34 @@ namespace Avalonia.Controls.UnitTests.Selection Assert.Equal(0, raised); } + [Fact] + public void Initializing_Source_Raises_SelectedItems_PropertyChanged() + { + var target = CreateTarget(false); + var selectedItemRaised = 0; + var selectedItemsRaised = 0; + + target.Select(1); + target.Select(2); + + target.PropertyChanged += (s, e) => + { + if (e.PropertyName == nameof(target.SelectedItem)) + { + ++selectedItemRaised; + } + else if (e.PropertyName == nameof(target.SelectedItems)) + { + ++selectedItemsRaised; + } + }; + + target.Source = new[] { "foo", "bar", "baz" }; + + Assert.Equal(1, selectedItemRaised); + Assert.Equal(1, selectedItemsRaised); + } + [Fact] public void Initializing_Source_Respects_Range_SourceItem_Order() { @@ -152,6 +180,34 @@ namespace Avalonia.Controls.UnitTests.Selection Assert.Equal("bar", target.SelectedItem); Assert.Equal(new[] { "bar" }, target.SelectedItems); } + + [Fact] + public void Changing_Source_To_Null_Raises_SelectedItems_PropertyChanged() + { + var target = CreateTarget(); + var selectedItemRaised = 0; + var selectedItemsRaised = 0; + + target.Select(1); + target.Select(2); + + target.PropertyChanged += (s, e) => + { + if (e.PropertyName == nameof(target.SelectedItem)) + { + ++selectedItemRaised; + } + else if (e.PropertyName == nameof(target.SelectedItems)) + { + ++selectedItemsRaised; + } + }; + + target.Source = null; + + Assert.Equal(1, selectedItemRaised); + Assert.Equal(1, selectedItemsRaised); + } } public class SelectedIndex diff --git a/tests/Avalonia.Controls.UnitTests/Selection/SelectionModelTests_Single.cs b/tests/Avalonia.Controls.UnitTests/Selection/SelectionModelTests_Single.cs index 1b37730797..66a2cef921 100644 --- a/tests/Avalonia.Controls.UnitTests/Selection/SelectionModelTests_Single.cs +++ b/tests/Avalonia.Controls.UnitTests/Selection/SelectionModelTests_Single.cs @@ -174,6 +174,33 @@ namespace Avalonia.Controls.UnitTests.Selection Assert.Equal(new[] { "bar" }, target.SelectedItems); } + [Fact] + public void Initializing_Source_Raises_SelectedItems_PropertyChanged() + { + var target = CreateTarget(false); + var selectedItemRaised = 0; + var selectedItemsRaised = 0; + + target.Select(1); + + target.PropertyChanged += (s, e) => + { + if (e.PropertyName == nameof(target.SelectedItem)) + { + ++selectedItemRaised; + } + else if (e.PropertyName == nameof(target.SelectedItems)) + { + ++selectedItemsRaised; + } + }; + + target.Source = new[] { "foo", "bar", "baz" }; + + Assert.Equal(1, selectedItemRaised); + Assert.Equal(1, selectedItemsRaised); + } + [Fact] public void Changing_Source_To_Null_Doesnt_Clear_Selection() { @@ -194,7 +221,7 @@ namespace Avalonia.Controls.UnitTests.Selection } [Fact] - public void Changing_Source_To_NonNUll_First_Clears_Old_Selection() + public void Changing_Source_To_NonNull_First_Clears_Old_Selection() { var target = CreateTarget(); var raised = 0; @@ -219,6 +246,33 @@ namespace Avalonia.Controls.UnitTests.Selection Assert.Equal(1, raised); } + [Fact] + public void Changing_Source_To_Null_Raises_SelectedItems_PropertyChanged() + { + var target = CreateTarget(); + var selectedItemRaised = 0; + var selectedItemsRaised = 0; + + target.Select(1); + + target.PropertyChanged += (s, e) => + { + if (e.PropertyName == nameof(target.SelectedItem)) + { + ++selectedItemRaised; + } + else if (e.PropertyName == nameof(target.SelectedItems)) + { + ++selectedItemsRaised; + } + }; + + target.Source = null; + + Assert.Equal(1, selectedItemRaised); + Assert.Equal(1, selectedItemsRaised); + } + [Fact] public void Raises_PropertyChanged() { diff --git a/tests/Avalonia.Controls.UnitTests/TabControlTests.cs b/tests/Avalonia.Controls.UnitTests/TabControlTests.cs index fd52aeb9af..e6f7ac601f 100644 --- a/tests/Avalonia.Controls.UnitTests/TabControlTests.cs +++ b/tests/Avalonia.Controls.UnitTests/TabControlTests.cs @@ -122,11 +122,86 @@ namespace Avalonia.Controls.UnitTests Items = collection, }; - target.ApplyTemplate(); + Prepare(target); target.SelectedItem = collection[1]; + + Assert.Same(collection[1], target.SelectedItem); + Assert.Equal(collection[1].Content, target.SelectedContent); + collection.RemoveAt(1); Assert.Same(collection[0], target.SelectedItem); + Assert.Equal(collection[0].Content, target.SelectedContent); + } + + [Fact] + public void Removal_Should_Set_New_Item0_When_Item0_Selected() + { + var collection = new ObservableCollection() + { + new TabItem + { + Name = "first", + Content = "foo", + }, + new TabItem + { + Name = "second", + Content = "bar", + }, + new TabItem + { + Name = "3rd", + Content = "barf", + }, + }; + + var target = new TabControl + { + Template = TabControlTemplate(), + Items = collection, + }; + + Prepare(target); + target.SelectedItem = collection[0]; + + Assert.Same(collection[0], target.SelectedItem); + Assert.Equal(collection[0].Content, target.SelectedContent); + + collection.RemoveAt(0); + + Assert.Same(collection[0], target.SelectedItem); + Assert.Equal(collection[0].Content, target.SelectedContent); + } + + [Fact] + public void Removal_Should_Set_New_Item0_When_Item0_Selected_With_DataTemplate() + { + using var app = UnitTestApplication.Start(TestServices.StyledWindow); + + var collection = new ObservableCollection() + { + new Item("first"), + new Item("second"), + new Item("3rd"), + }; + + var target = new TabControl + { + Template = TabControlTemplate(), + Items = collection, + }; + + Prepare(target); + target.SelectedItem = collection[0]; + + Assert.Same(collection[0], target.SelectedItem); + Assert.Equal(collection[0], target.SelectedContent); + + collection.RemoveAt(0); + + Assert.Same(collection[0], target.SelectedItem); + Assert.Equal(collection[0], target.SelectedContent); } [Fact] @@ -383,6 +458,13 @@ namespace Avalonia.Controls.UnitTests }.RegisterInNameScope(scope)); } + private void Prepare(TabControl target) + { + ApplyTemplate(target); + target.Measure(Size.Infinity); + target.Arrange(new Rect(target.DesiredSize)); + } + private void ApplyTemplate(TabControl target) { target.ApplyTemplate(); diff --git a/tests/Avalonia.Controls.UnitTests/Utils/SelectedItemsSyncTests.cs b/tests/Avalonia.Controls.UnitTests/Utils/SelectedItemsSyncTests.cs deleted file mode 100644 index 3899d9dfbf..0000000000 --- a/tests/Avalonia.Controls.UnitTests/Utils/SelectedItemsSyncTests.cs +++ /dev/null @@ -1,278 +0,0 @@ -using System; -using System.Collections.Generic; -using System.Collections.Specialized; -using Avalonia.Collections; -using Avalonia.Controls.Selection; -using Avalonia.Controls.Utils; -using Xunit; - -namespace Avalonia.Controls.UnitTests.Utils -{ - public class SelectedItemsSyncTests - { - [Fact] - public void Initial_Items_Are_From_Model() - { - var target = CreateTarget(); - var items = target.SelectedItems; - - Assert.Equal(new[] { "bar", "baz" }, items); - } - - [Fact] - public void Selecting_On_Model_Adds_Item() - { - var target = CreateTarget(); - var items = target.SelectedItems; - - target.SelectionModel.Select(0); - - Assert.Equal(new[] { "bar", "baz", "foo" }, items); - } - - [Fact] - public void Selecting_Duplicate_On_Model_Adds_Item() - { - var target = CreateTarget(new[] { "foo", "bar", "baz", "foo", "bar", "baz" }); - var items = target.SelectedItems; - - target.SelectionModel.Select(4); - - Assert.Equal(new[] { "bar", "baz", "bar" }, items); - } - - [Fact] - public void Deselecting_On_Model_Removes_Item() - { - var target = CreateTarget(); - var items = target.SelectedItems; - - target.SelectionModel.Deselect(1); - - Assert.Equal(new[] { "baz" }, items); - } - - [Fact] - public void Deselecting_Duplicate_On_Model_Removes_Item() - { - var target = CreateTarget(new[] { "foo", "bar", "baz", "foo", "bar", "baz" }); - var items = target.SelectedItems; - - target.SelectionModel.Select(4); - target.SelectionModel.Deselect(4); - - Assert.Equal(new[] { "baz", "bar" }, items); - } - - [Fact] - public void Reassigning_Model_Resets_Items() - { - var target = CreateTarget(); - var items = target.SelectedItems; - - var newModel = new SelectionModel - { - Source = (string[])target.SelectionModel.Source, - SingleSelect = false - }; - - newModel.Select(0); - newModel.Select(1); - - target.SelectionModel = newModel; - - Assert.Equal(new[] { "foo", "bar" }, items); - } - - [Fact] - public void Reassigning_Model_Tracks_New_Model() - { - var target = CreateTarget(); - var items = target.SelectedItems; - - var newModel = new SelectionModel - { - Source = (string[])target.SelectionModel.Source, - SingleSelect = false - }; - - target.SelectionModel = newModel; - - newModel.Select(0); - newModel.Select(1); - - Assert.Equal(new[] { "foo", "bar" }, items); - } - - [Fact] - public void Adding_To_Items_Selects_On_Model() - { - var target = CreateTarget(); - var items = target.SelectedItems; - - items.Add("foo"); - - Assert.Equal(new[] { 0, 1, 2 }, target.SelectionModel.SelectedIndexes); - Assert.Equal(new[] { "bar", "baz", "foo" }, items); - } - - [Fact] - public void Removing_From_Items_Deselects_On_Model() - { - var target = CreateTarget(); - var items = target.SelectedItems; - - items.Remove("baz"); - - Assert.Equal(new[] { 1 }, target.SelectionModel.SelectedIndexes); - Assert.Equal(new[] { "bar" }, items); - } - - [Fact] - public void Replacing_Item_Updates_Model() - { - var target = CreateTarget(); - var items = target.SelectedItems; - - items[0] = "foo"; - - Assert.Equal(new[] { 0, 2 }, target.SelectionModel.SelectedIndexes); - Assert.Equal(new[] { "foo", "baz" }, items); - } - - [Fact] - public void Clearing_Items_Updates_Model() - { - var target = CreateTarget(); - var items = target.SelectedItems; - - items.Clear(); - - Assert.Empty(target.SelectionModel.SelectedIndexes); - } - - [Fact] - public void Setting_Items_Updates_Model() - { - var target = CreateTarget(); - var oldItems = target.SelectedItems; - - var newItems = new AvaloniaList { "foo", "baz" }; - target.SelectedItems = newItems; - - Assert.Equal(new[] { 0, 2 }, target.SelectionModel.SelectedIndexes); - Assert.Same(newItems, target.SelectedItems); - Assert.NotSame(oldItems, target.SelectedItems); - Assert.Equal(new[] { "foo", "baz" }, newItems); - } - - [Fact] - public void Setting_Items_Subscribes_To_Model() - { - var target = CreateTarget(); - var items = new AvaloniaList { "foo", "baz" }; - - target.SelectedItems = items; - target.SelectionModel.Select(1); - - Assert.Equal(new[] { "foo", "baz", "bar" }, items); - } - - [Fact] - public void Setting_Items_To_Null_Creates_Empty_Items() - { - var target = CreateTarget(); - var oldItems = target.SelectedItems; - - target.SelectedItems = null; - - var newItems = Assert.IsType>(target.SelectedItems); - - Assert.NotSame(oldItems, newItems); - } - - [Fact] - public void Handles_Null_Model_Source() - { - var model = new SelectionModel { SingleSelect = false }; - model.Select(1); - - var target = new SelectedItemsSync(model); - var items = target.SelectedItems; - - Assert.Empty(items); - - model.Select(2); - model.Source = new[] { "foo", "bar", "baz" }; - - Assert.Equal(new[] { "bar", "baz" }, items); - } - - [Fact] - public void Does_Not_Accept_Fixed_Size_Items() - { - var target = CreateTarget(); - - Assert.Throws(() => - target.SelectedItems = new[] { "foo", "bar", "baz" }); - } - - [Fact] - public void Selected_Items_Can_Be_Set_Before_SelectionModel_Source() - { - var model = new SelectionModel(); - var target = new SelectedItemsSync(model); - var items = new AvaloniaList { "foo", "bar", "baz" }; - var selectedItems = new AvaloniaList { "bar" }; - - target.SelectedItems = selectedItems; - model.Source = items; - - Assert.Equal(1, model.SelectedIndex); - } - - [Fact] - public void Restores_Selection_On_Items_Reset() - { - var items = new ResettingCollection(new[] { "foo", "bar", "baz" }); - var model = new SelectionModel { Source = items }; - var target = new SelectedItemsSync(model); - - model.SelectedIndex = 1; - items.Reset(new[] { "baz", "foo", "bar" }); - - Assert.Equal(2, model.SelectedIndex); - } - - private static SelectedItemsSync CreateTarget( - IEnumerable items = null) - { - items ??= new[] { "foo", "bar", "baz" }; - - var model = new SelectionModel { Source = items, SingleSelect = false }; - model.SelectRange(1, 2); - - var target = new SelectedItemsSync(model); - return target; - } - - private class ResettingCollection : List, INotifyCollectionChanged - { - public ResettingCollection(IEnumerable items) - { - AddRange(items); - } - - public void Reset(IEnumerable items) - { - Clear(); - AddRange(items); - CollectionChanged?.Invoke( - this, - new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset)); - } - - public event NotifyCollectionChangedEventHandler CollectionChanged; - } - } -}