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Merge pull request #157 from AvaloniaCommunity/feature/Sync-Stable-v8…
….1.97.11xx Publish v8.1.97.11073
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| using System; | ||
|
|
||
| namespace Prism.Common | ||
| { | ||
| internal static class Stubs | ||
| { | ||
| public static readonly Action Nop = () => { }; | ||
| public static readonly Action<Exception> Throw = ex => { throw ex; }; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| using System; | ||
| using Avalonia.Reactive; | ||
| using Prism.Common; | ||
|
|
||
| namespace Prism.Extensions | ||
| { | ||
| internal static class ObservableExtensions | ||
| { | ||
| /// <summary> | ||
| /// Subscribes an element handler to an observable sequence. | ||
| /// </summary> | ||
| /// <typeparam name="T">The type of the elements in the source sequence.</typeparam> | ||
| /// <param name="source">Observable sequence to subscribe to.</param> | ||
| /// <param name="onNext">Action to invoke for each element in the observable sequence.</param> | ||
| /// <returns><see cref="IDisposable"/> object used to unsubscribe from the observable sequence.</returns> | ||
| /// <exception cref="ArgumentNullException"><paramref name="source"/> or <paramref name="onNext"/> is <c>null</c>.</exception> | ||
| public static IDisposable Subscribe<T>(this IObservable<T> source, Action<T> onNext) | ||
| { | ||
| if (source == null) | ||
| { | ||
| throw new ArgumentNullException(nameof(source)); | ||
| } | ||
|
|
||
| if (onNext == null) | ||
| { | ||
| throw new ArgumentNullException(nameof(onNext)); | ||
| } | ||
|
|
||
| // | ||
| // [OK] Use of unsafe Subscribe: non-pretentious constructor for an observer; this overload is not to be used internally. | ||
| // | ||
| return source.Subscribe/*Unsafe*/(new AnonymousObserver<T>(onNext, Stubs.Throw, Stubs.Nop)); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 +1,5 @@ | ||
| using Avalonia; | ||
| using Avalonia; | ||
| using Prism.Extensions; | ||
| using System; | ||
|
|
||
| namespace Prism.Regions | ||
|
|
||
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56 changes: 56 additions & 0 deletions
56
tests/Avalonia/Prism.Avalonia.Tests/Interactivity/ObservableBehaviorFixture.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| using Avalonia; | ||
| using Xunit; | ||
| using Prism.Extensions; | ||
|
|
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| namespace Prism.Avalonia.Tests.Interactivity | ||
| { | ||
| public class ObservableBehaviorFixture | ||
| { | ||
| [Fact] | ||
| public void SubscribeWorksOnIObservableWithLambda() | ||
| { | ||
| var targetUIElement = new TestAvaloniaObject(); | ||
| targetUIElement.Test = "123"; | ||
|
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| Assert.Equal("123", targetUIElement.OutTest); | ||
| } | ||
| } | ||
|
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| class TestAvaloniaObject : AvaloniaObject | ||
| { | ||
| /// <summary> | ||
| /// The property to subscribe on. | ||
| /// </summary> | ||
| public static readonly StyledProperty<string> TestProperty = | ||
| AvaloniaProperty.Register<TestAvaloniaObject, string>("Test"); | ||
|
|
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| /// <summary> | ||
| /// Gets or sets a value to the TestProperty. | ||
| /// </summary> | ||
| public string Test | ||
| { | ||
| get { return (string)GetValue(TestProperty); } | ||
| set { SetValue(TestProperty, value); } | ||
| } | ||
|
|
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| /// <summary> | ||
| /// The out test property to check after TestProperty change | ||
| /// </summary> | ||
| public string OutTest { get; set; } | ||
|
|
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| /// <summary> | ||
| /// Initializes a new instance of <see cref="TestAvaloniaObject"/>. | ||
| /// </summary> | ||
| #pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable. | ||
| public TestAvaloniaObject() | ||
| #pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable. | ||
| { | ||
| TestProperty.Changed.Subscribe(args => OnPropertyChanged(args)); | ||
| } | ||
|
|
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| private void OnPropertyChanged(AvaloniaPropertyChangedEventArgs<string> args) | ||
| { | ||
| OutTest = args.NewValue.Value; | ||
| } | ||
| } | ||
| } |