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Framework/Localization/EnumLocalizer.cs

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+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using Kreta.Framework.Caching;
+
+namespace Kreta.Framework.Localization
+{
+    /// <summary>
+    /// Felsorolások nyelvesítésére szolgáló <see cref="ILocalizer"/> megvalósítás.
+    /// </summary>
+    internal sealed class EnumLocalizer : ILocalizer
+    {
+        private static object SyncObject = new object();
+
+        private static readonly Dictionary<Enum, FriendlyNameAttribute> friendlyNameAttributeCache = new Dictionary<Enum, FriendlyNameAttribute>();
+
+        /// <summary>
+        /// Az osztály alapértelmezett konstruktora.
+        /// </summary>
+        public EnumLocalizer()
+        {
+        }
+
+        /// <summary>
+        /// Lásd <see cref="ILocalizer.Localize"/>.
+        /// </summary>
+        /// <param name="value">Lásd <see cref="ILocalizer.Localize"/></param>
+        /// <param name="cultureInfo">Lásd <see cref="ILocalizer.Localize"/></param>
+        /// <returns>Lásd <see cref="ILocalizer.Localize"/></returns>
+        string ILocalizer.Localize(object value, CultureInfo cultureInfo)
+        {
+            return Localize((Enum)value, cultureInfo);
+        }
+
+        /// <summary>
+        /// Lásd <see cref="ILocalizer.Localize"/>.
+        /// </summary>
+        /// <remarks>
+        /// A nyelvesítés a felsorolás mezőire tett <see cref="FriendlyNameAttribute"/> attribútum
+        /// alapján történik. A felsorolás mezője ilyet nem tartalmaz, akkor egyszerűen a <see cref="Enum.ToString()"/>
+        /// metódus lesz használva.
+        /// </remarks>
+        /// <param name="value">Lásd <see cref="ILocalizer.Localize"/></param>
+        /// <param name="cultureInfo">Lásd <see cref="ILocalizer.Localize"/></param>
+        /// <returns>Lásd <see cref="ILocalizer.Localize"/></returns>
+        public string Localize(Enum value, CultureInfo cultureInfo)
+        {
+            FriendlyNameAttribute attribute;
+            lock (SyncObject)
+            {
+                if (!friendlyNameAttributeCache.ContainsKey(value))
+                {
+                    System.Reflection.FieldInfo fieldinfo = value.GetType().GetField(value.ToString());
+                    attribute = (FriendlyNameAttribute)fieldinfo.GetCustomAttributes(typeof(FriendlyNameAttribute), false).FirstOrDefault(); // no inheritance
+                    friendlyNameAttributeCache[value] = attribute;
+                }
+                else
+                {
+                    attribute = friendlyNameAttributeCache[value];
+                }
+            }
+
+            return attribute != null
+                ? SDAServer.Instance.CacheManager.AquireCache<StringResourcesCache>().Get(attribute.StringResourceId, cultureInfo.LCID, attribute.DisplayText)
+                : value.ToString();
+        }
+    }
+}