| | | 1 | | // ----------------------------------------------------------------------- |
| | | 2 | | // <copyright file="MetadataBehaviorApplicator.cs" company="Stéphane ANDRE"> |
| | | 3 | | // Copyright (c) Stéphane ANDRE. All rights reserved. |
| | | 4 | | // </copyright> |
| | | 5 | | // ----------------------------------------------------------------------- |
| | | 6 | | |
| | | 7 | | using System; |
| | | 8 | | using System.Runtime.CompilerServices; |
| | | 9 | | using MyNet.Globalization.Facade; |
| | | 10 | | using MyNet.Metadata; |
| | | 11 | | using MyNet.Observable.Behaviors.Metadata; |
| | | 12 | | using MyNet.Observable.Behaviors.Metadata.Features; |
| | | 13 | | using MyNet.Observable.Behaviors.Metadata.Features.Events; |
| | | 14 | | |
| | | 15 | | namespace MyNet.Observable.Behaviors; |
| | | 16 | | |
| | | 17 | | /// <summary> |
| | | 18 | | /// Applies runtime behaviors declared in <see cref="MetadataRegistry"/> to <see cref="ObservableObject"/> instances. |
| | | 19 | | /// </summary> |
| | | 20 | | public static class MetadataBehaviorApplicator |
| | | 21 | | { |
| | 9 | 22 | | private static readonly ConditionalWeakTable<ObservableObject, object?> AppliedOwners = []; |
| | | 23 | | |
| | | 24 | | /// <summary> |
| | | 25 | | /// Applies metadata-driven behaviors for the owner instance (currently property-changed forwarding). |
| | | 26 | | /// </summary> |
| | | 27 | | public static void Apply(ObservableObject owner) |
| | | 28 | | { |
| | 1935 | 29 | | if (AppliedOwners.TryGetValue(owner, out _)) |
| | 0 | 30 | | return; |
| | | 31 | | |
| | 1935 | 32 | | AppliedOwners.Add(owner, null); |
| | | 33 | | |
| | 1935 | 34 | | var needsCulture = false; |
| | 1935 | 35 | | var needsTimeZone = false; |
| | | 36 | | |
| | 14796 | 37 | | for (var current = owner.GetType(); current is not null && typeof(ObservableObject).IsAssignableFrom(current); c |
| | | 38 | | { |
| | 5463 | 39 | | var typeMetadata = MetadataRegistry.Get(current); |
| | | 40 | | |
| | 10974 | 41 | | foreach (var propertyName in typeMetadata.WithFeature<PropertyChangedForwardingFeature>()) |
| | | 42 | | { |
| | 24 | 43 | | var feature = typeMetadata.GetFeatureOrDefault<PropertyChangedForwardingFeature>(propertyName); |
| | 24 | 44 | | if (feature is null) |
| | | 45 | | continue; |
| | | 46 | | |
| | 24 | 47 | | ReplaceForwardingBehavior(owner, propertyName, feature.ConcatenatePropertyName); |
| | | 48 | | } |
| | | 49 | | |
| | 5463 | 50 | | if (!needsCulture) |
| | 5439 | 51 | | needsCulture = typeMetadata.WithFeature<EventReactionFeature>(x => x.Events.Contains(typeof(CultureChang |
| | | 52 | | |
| | 5463 | 53 | | if (!needsTimeZone) |
| | 5460 | 54 | | needsTimeZone = typeMetadata.WithFeature<EventReactionFeature>(x => x.Events.Contains(typeof(TimeZoneCha |
| | | 55 | | } |
| | | 56 | | |
| | 1935 | 57 | | if (needsCulture) |
| | 24 | 58 | | owner.ReactOnCultureChanged(GlobalizationServices.Current); |
| | | 59 | | |
| | 1935 | 60 | | if (needsTimeZone) |
| | 3 | 61 | | owner.ReactOnTimeZoneChanged(GlobalizationServices.Current); |
| | 1935 | 62 | | } |
| | | 63 | | |
| | | 64 | | /// <summary> |
| | | 65 | | /// Registers forwarding for a single property and records it in metadata when not already configured. |
| | | 66 | | /// </summary> |
| | | 67 | | public static void ApplyForwardProperty(ObservableObject owner, string propertyName, bool concatenatePropertyName = |
| | | 68 | | { |
| | 18 | 69 | | ArgumentNullException.ThrowIfNull(owner); |
| | 18 | 70 | | ArgumentException.ThrowIfNullOrWhiteSpace(propertyName); |
| | | 71 | | |
| | 18 | 72 | | var propertyMetadata = MetadataRegistry.Get(owner.GetType()).GetProperty(propertyName); |
| | 18 | 73 | | MetadataApplicators.ApplyForwardProperty(propertyMetadata, concatenatePropertyName); |
| | 18 | 74 | | ReplaceForwardingBehavior(owner, propertyName, concatenatePropertyName); |
| | 18 | 75 | | } |
| | | 76 | | |
| | 42 | 77 | | private static void ReplaceForwardingBehavior(ObservableObject owner, string propertyName, bool concatenatePropertyN |
| | 42 | 78 | | new PropertyChangedForwardingBehavior(owner, propertyName, concatenatePropertyName), |
| | 42 | 79 | | propertyName, |
| | 42 | 80 | | nameof(PropertyChangedForwardingBehavior)); |
| | | 81 | | } |
| | | 82 | | |