Added a "log level" and a "close to tray" settings for the Windows application

02_Windows_App/Perun_v1/01_Classes/LogController.cs

@@ -3,9 +3,47 @@ using System.IO;
 
 class LogController
 {
-    // TBD - done via https://stackoverflow.com/questions/20185015/how-to-write-log-file-in-c
-    public static void WriteLog(string strLog)
+    private static LogController _instance = new LogController();
+
+    public static LogController instance
     {
+        get
+        {
+            return _instance;
+        }
+    }
+
+    public int level
+    {
+        get;
+        set;
+    }
+
+    public void LogError(string strLog)
+    {
+        this.WriteLog(0, strLog);
+    }
+
+    public void LogWarning(string strLog)
+    {
+        this.WriteLog(1, strLog);
+    }
+
+    public void LogInfo(string strLog)
+    {
+        this.WriteLog(2, strLog);
+    }
+
+    public void LogDebug(string strLog)
+    {
+        this.WriteLog(3, strLog);
+    }
+
+    // TBD - done via https://stackoverflow.com/questions/20185015/how-to-write-log-file-in-c
+    public void WriteLog(int logLevel, string strLog)
+    {
+        if (logLevel > this.level) return;
+
         StreamWriter LogStreamWriter;
         FileStream LogFileStream = null;
         DirectoryInfo LogDirectoryInfo = null;