add GetActiveLanguages method

Author: Musa Demir

src/Abp.Zero.Common/Localization/ApplicationLanguageManager.cs

@@ -57,6 +57,11 @@ public virtual async Task<IReadOnlyList<ApplicationLanguage>> GetLanguagesAsync(
             return (await GetLanguageDictionaryAsync(tenantId)).Values.ToImmutableList();
         }
 
+        public virtual async Task<IReadOnlyList<ApplicationLanguage>> GetActiveLanguagesAsync(int? tenantId)
+        {
+            return (await GetLanguagesAsync(tenantId)).Where(l => !l.IsDisabled).ToImmutableList();
+        }
+
         /// <summary>
         /// Gets list of all languages available to given tenant (or null for host)
         /// </summary>
@@ -66,6 +71,11 @@ public virtual IReadOnlyList<ApplicationLanguage> GetLanguages(int? tenantId)
             return (GetLanguageDictionary(tenantId)).Values.ToImmutableList();
         }
 
+        public virtual IReadOnlyList<ApplicationLanguage> GetActiveLanguages(int? tenantId)
+        {
+            return GetLanguages(tenantId).Where(l => !l.IsDisabled).ToImmutableList();
+        }
+
         /// <summary>
         /// Adds a new language.
         /// </summary>

src/Abp.Zero.Common/Localization/ApplicationLanguageProvider.cs

@@ -57,6 +57,20 @@ public IReadOnlyList<LanguageInfo> GetLanguages()
 
             return languageInfos;
         }
+        /// <summary>
+        /// Gets the active languages for current tenant.
+        /// </summary>
+        public IReadOnlyList<LanguageInfo> GetActiveLanguages()
+        {
+            var languageInfos = _applicationLanguageManager.GetLanguages(AbpSession.TenantId)
+               .OrderBy(l => l.DisplayName)
+               .Select(l => l.ToLanguageInfo())
+               .ToList();
+
+            SetDefaultLanguage(languageInfos);
+
+            return languageInfos;
+        }
 
         private async Task SetDefaultLanguageAsync(List<LanguageInfo> languageInfos)
         {

src/Abp.Zero.Common/Localization/IApplicationLanguageManager.cs

@@ -14,12 +14,24 @@ public interface IApplicationLanguageManager
         /// <param name="tenantId">TenantId or null for host</param>
         Task<IReadOnlyList<ApplicationLanguage>> GetLanguagesAsync(int? tenantId);
 
+        /// <summary>
+        /// Gets list of all active languages available to given tenant (or null for host)
+        /// </summary>
+        /// <param name="tenantId">TenantId or null for host</param>
+        Task<IReadOnlyList<ApplicationLanguage>> GetActiveLanguagesAsync(int? tenantId);
+
         /// <summary>
         /// Gets list of all languages available to given tenant (or null for host)
         /// </summary>
         /// <param name="tenantId">TenantId or null for host</param>
         IReadOnlyList<ApplicationLanguage> GetLanguages(int? tenantId);
 
+        /// <summary>
+        /// Gets list of all active languages available to given tenant (or null for host)
+        /// </summary>
+        /// <param name="tenantId">TenantId or null for host</param>
+        IReadOnlyList<ApplicationLanguage> GetActiveLanguages(int? tenantId);
+
         /// <summary>
         /// Adds a new language.
         /// </summary>

src/Abp/Localization/DefaultLanguageProvider.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.Collections.Immutable;
+using System.Linq;
 using Abp.Configuration.Startup;
 using Abp.Dependency;
 
@@ -18,5 +19,10 @@ public IReadOnlyList<LanguageInfo> GetLanguages()
         {
             return _configuration.Languages.ToImmutableList();
         }
+
+        public IReadOnlyList<LanguageInfo> GetActiveLanguages()
+        {
+            return _configuration.Languages.Where(l => !l.IsDisabled).ToImmutableList();
+        }
     }
 }

src/Abp/Localization/ILanguageManager.cs

@@ -7,5 +7,7 @@ public interface ILanguageManager
         LanguageInfo CurrentLanguage { get; }
 
         IReadOnlyList<LanguageInfo> GetLanguages();
+
+        IReadOnlyList<LanguageInfo> GetActiveLanguages();
     }
 }

src/Abp/Localization/ILanguageProvider.cs

@@ -5,5 +5,7 @@ namespace Abp.Localization
     public interface ILanguageProvider
     {
         IReadOnlyList<LanguageInfo> GetLanguages();
+
+        IReadOnlyList<LanguageInfo> GetActiveLanguages();
     }
 }

src/Abp/Localization/LanguageManager.cs

@@ -22,6 +22,11 @@ public IReadOnlyList<LanguageInfo> GetLanguages()
             return _languageProvider.GetLanguages();
         }
 
+        public IReadOnlyList<LanguageInfo> GetActiveLanguages()
+        {
+            return _languageProvider.GetActiveLanguages();
+        }
+
         private LanguageInfo GetCurrentLanguage()
         {
             var languages = _languageProvider.GetLanguages();