1 files changed, 140 insertions, 0 deletions
diff --git a/samples/IrcChatSystem/ChatClientApp/Client/UserPreferences.cs b/samples/IrcChatSystem/ChatClientApp/Client/UserPreferences.cs
new file mode 100644
index 0000000..64143c6
--- /dev/null
+++ b/samples/IrcChatSystem/ChatClientApp/Client/UserPreferences.cs
@@ -0,0 +1,140 @@
+using System;
+using System.IO;
+using Hik.Samples.Scs.IrcChat.Arguments;
+
+namespace Hik.Samples.Scs.IrcChat.Client
+{
+    /// <summary>
+    /// This class is used to save and load preferences of the user.
+    /// </summary>
+    [Serializable]
+    internal class UserPreferences
+    {
+        /// <summary>
+        /// Gets the singleton instance of this class.
+        /// </summary>
+        public static UserPreferences Current
+        {
+            get
+            {
+                if (_current == null)
+                {
+                    lock (SyncObj)
+                    {
+                        if (_current == null)
+                        {
+                            _current = LoadPreferences();
+                        }
+                    }
+                }
+
+                return _current;
+            }
+        }
+
+        /// <summary>
+        /// Nick of the user.
+        /// </summary>
+        public string Nick { get; set; }
+
+        /// <summary>
+        /// Path of user's avatar file.
+        /// </summary>
+        public string AvatarFile { get; set; }
+
+        /// <summary>
+        /// Sound preference of user.
+        /// True if sound is on.
+        /// </summary>
+        public bool IsSoundOn { get; set; }
+
+        /// <summary>
+        /// Ip address of the chat server.
+        /// </summary>
+        public string ServerIpAddress { get; set; }
+
+        /// <summary>
+        /// TCP port of the chat server.
+        /// </summary>
+        public int ServerTcpPort { get; set; }
+        
+        /// <summary>
+        /// Text style of user.
+        /// </summary>
+        public MessageTextStyle TextStyle { get; private set; }
+
+        /// <summary>
+        /// The singleton instance of this class.
+        /// </summary>
+        private static UserPreferences _current;
+
+        /// <summary>
+        /// Used to synronize threads while creating singleton object.
+        /// </summary>
+        private static readonly object SyncObj = new object();
+
+        /// <summary>
+        /// Constructor.
+        /// </summary>
+        private UserPreferences()
+        {
+            IsSoundOn = true;
+            TextStyle = new MessageTextStyle();
+        }
+
+        /// <summary>
+        /// Saves preferences to the disc.
+        /// </summary>
+        public void Save()
+        {
+            try
+            {
+                ClientHelper.SerializeObjectToFile(
+                    this, 
+                    Path.Combine(ClientHelper.GetCurrentDirectory(), "Preferences.bin")
+                    );
+            }
+            catch
+            {
+                
+            }
+        }
+
+        /// <summary>
+        /// Load last preferences from the disc.
+        /// </summary>
+        /// <returns>Last user preferences (or default values if not found)</returns>
+        private static UserPreferences LoadPreferences()
+        {
+            try
+            {
+                var preferenceFile = Path.Combine(ClientHelper.GetCurrentDirectory(), "Preferences.bin");
+                if (File.Exists(preferenceFile))
+                {
+                    return (UserPreferences)ClientHelper.DeserializeObjectFromFile(preferenceFile);
+                }
+            }
+            catch
+            {
+
+            }
+
+            return CreateDefault();
+        }
+
+        /// <summary>
+        /// Creates a default-valued instance of this class.
+        /// </summary>
+        /// <returns>UserPreferences object with default values</returns>
+        private static UserPreferences CreateDefault()
+        {
+            return new UserPreferences
+                   {
+                       Nick = "User Nick",
+                       AvatarFile = Path.Combine(ClientHelper.GetCurrentDirectory(), @"Images\user_male.png"),
+                       ServerIpAddress = "127.0.0.1",
+                       ServerTcpPort = 10048
+                   };
+        }
+    }
+}