IAbpStringLocalizer.GetSupportedCultures method converted to async

framework/src/Volo.Abp.AspNetCore.Mvc.Client.Common/Volo/Abp/AspNetCore/Mvc/Client/RemoteLocalizationContributor.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Threading.Tasks;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Localization;
 using Microsoft.Extensions.Logging;
@@ -55,11 +56,11 @@ public class RemoteLocalizationContributor : ILocalizationResourceContributor
         }
     }
 
-    public IEnumerable<string> GetSupportedCultures()
+    public Task<IEnumerable<string>> GetSupportedCulturesAsync()
     {
         /* This contributor does not know all the supported cultures by the
          remote localization resource, and it is not needed on the client side */
-        return Array.Empty<string>();
+        return Task.FromResult((IEnumerable<string>)Array.Empty<string>());
     }
 
     private Dictionary<string, string> GetResourceOrNull()

framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpDictionaryBasedStringLocalizer.cs

@@ -4,6 +4,7 @@ using System.Collections.Immutable;
 using System.Globalization;
 using System.Linq;
 using System.Resources;
+using System.Threading.Tasks;
 using Microsoft.Extensions.Localization;
 
 namespace Volo.Abp.Localization;
@@ -51,9 +52,9 @@ public class AbpDictionaryBasedStringLocalizer : IAbpStringLocalizer
         );
     }
 
-    public IEnumerable<string> GetSupportedCultures()
+    public Task<IEnumerable<string>> GetSupportedCulturesAsync()
     {
-        return Resource.Contributors.GetSupportedCultures();
+        return Resource.Contributors.GetSupportedCulturesAsync();
     }
 
     protected virtual LocalizedString GetLocalizedStringFormatted(string name, params object[] arguments)
@@ -224,9 +225,9 @@ public class AbpDictionaryBasedStringLocalizer : IAbpStringLocalizer
             return _innerLocalizer.GetAllStrings(_cultureName, includeParentCultures, includeBaseLocalizers, includeDynamicContributors);
         }
 
-        public IEnumerable<string> GetSupportedCultures()
+        public Task<IEnumerable<string>> GetSupportedCulturesAsync()
         {
-            return _innerLocalizer.GetSupportedCultures();
+            return _innerLocalizer.GetSupportedCulturesAsync();
         }
     }
 }

framework/src/Volo.Abp.Localization/Volo/Abp/Localization/AbpStringLocalizerExtensions.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Reflection;
+using System.Threading.Tasks;
 using JetBrains.Annotations;
 using Microsoft.Extensions.Localization;
 using Volo.Abp.DynamicProxy;
@@ -58,12 +59,12 @@ public static class AbpStringLocalizerExtensions
         );
     }
 
-    public static IEnumerable<string> GetSupportedCultures(this IStringLocalizer localizer)
+    public static async Task<IEnumerable<string>> GetSupportedCulturesAsync(this IStringLocalizer localizer)
     {
         var internalLocalizer = ((IStringLocalizer)ProxyHelper.UnProxy(localizer)).GetInternalLocalizer();
         if (internalLocalizer is IAbpStringLocalizer abpStringLocalizer)
         {
-            return abpStringLocalizer.GetSupportedCultures();
+            return await abpStringLocalizer.GetSupportedCulturesAsync();
         }
 
         return Array.Empty<string>();

framework/src/Volo.Abp.Localization/Volo/Abp/Localization/IAbpStringLocalizer.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Threading.Tasks;
 using Microsoft.Extensions.Localization;
 
 namespace Volo.Abp.Localization;
@@ -11,5 +12,5 @@ public interface IAbpStringLocalizer : IStringLocalizer
         bool includeDynamicContributors
     );
 
-    IEnumerable<string> GetSupportedCultures();
+    Task<IEnumerable<string>> GetSupportedCulturesAsync();
 }

framework/src/Volo.Abp.Localization/Volo/Abp/Localization/ILocalizationResourceContributor.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Threading.Tasks;
 using Microsoft.Extensions.Localization;
 
 namespace Volo.Abp.Localization;
@@ -13,5 +14,5 @@ public interface ILocalizationResourceContributor
 
     void Fill(string cultureName, Dictionary<string, LocalizedString> dictionary);
     
-    IEnumerable<string> GetSupportedCultures();
+    Task<IEnumerable<string>> GetSupportedCulturesAsync();
 }

framework/src/Volo.Abp.Localization/Volo/Abp/Localization/LocalizationResourceBase.cs

@@ -32,9 +32,4 @@ public abstract class LocalizationResourceBase
             Contributors.Add(initialContributor);
         }
     }
-
-    internal IEnumerable<string> GetSupportedCultures()
-    {
-        return Contributors.GetSupportedCultures();
-    }
 }

framework/src/Volo.Abp.Localization/Volo/Abp/Localization/LocalizationResourceContributorList.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading.Tasks;
 using Microsoft.Extensions.Localization;
 
 namespace Volo.Abp.Localization;
@@ -44,8 +45,15 @@ public class LocalizationResourceContributorList : List<ILocalizationResourceCon
         }
     }
 
-    internal IEnumerable<string> GetSupportedCultures()
+    internal async Task<IEnumerable<string>> GetSupportedCulturesAsync()
     {
-        return this.SelectMany(c => c.GetSupportedCultures()).Distinct();
+        var cultures = new List<string>();
+
+        foreach (var contributor in this)
+        {
+            cultures.AddRange(await contributor.GetSupportedCulturesAsync());
+        }
+
+        return cultures;
     }
 }

framework/src/Volo.Abp.Localization/Volo/Abp/Localization/VirtualFiles/VirtualFileLocalizationResourceContributorBase.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Threading.Tasks;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.FileProviders;
 using Microsoft.Extensions.Localization;
@@ -39,9 +40,9 @@ public abstract class VirtualFileLocalizationResourceContributorBase : ILocaliza
         GetDictionaries().GetOrDefault(cultureName)?.Fill(dictionary);
     }
 
-    public IEnumerable<string> GetSupportedCultures()
+    public Task<IEnumerable<string>> GetSupportedCulturesAsync()
     {
-        return GetDictionaries().Keys;
+        return Task.FromResult((IEnumerable<string>)GetDictionaries().Keys);
     }
 
     private Dictionary<string, ILocalizationDictionary> GetDictionaries()

framework/test/Volo.Abp.Localization.Tests/Volo/Abp/Localization/AbpLocalization_Tests.cs

@@ -1,5 +1,6 @@
 using System.Globalization;
 using System.Linq;
+using System.Threading.Tasks;
 using Microsoft.Extensions.Localization;
 using Shouldly;
 using Volo.Abp.Localization.TestResources.Source;
@@ -361,9 +362,9 @@ public class AbpLocalization_Tests : AbpIntegratedTest<AbpLocalizationTestModule
     }
 
     [Fact]
-    public void Should_Get_Supported_Cultures()
+    public async Task Should_Get_Supported_Cultures()
     {
-        var cultures = _localizer.GetSupportedCultures();
+        var cultures = await _localizer.GetSupportedCulturesAsync();
         cultures.Count().ShouldBeGreaterThan(0);
     }
 }