mcs/class/System.ComponentModel.Composition/src/ComponentModel/System/ComponentModel/Composition/Diagnostics/CompositionTraceSource.cs

   1 // -----------------------------------------------------------------------\r
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.\r
   3 // -----------------------------------------------------------------------\r
   4 using System;\r
   5 using Microsoft.Internal;\r
   6 \r
   7 namespace System.ComponentModel.Composition.Diagnostics\r
   8 {\r
   9     internal static class CompositionTraceSource\r
  10     {\r
  11 #if SILVERLIGHT\r
  12         private static readonly SilverlightTraceWriter Source = new SilverlightTraceWriter();\r
  13 #else\r
  14         private static readonly TraceSourceTraceWriter Source = new TraceSourceTraceWriter();\r
  15 #endif\r
  16 \r
  17         public static bool CanWriteInformation\r
  18         {\r
  19             get { return Source.CanWriteInformation; }\r
  20         }\r
  21 \r
  22         public static bool CanWriteWarning\r
  23         {\r
  24             get { return Source.CanWriteWarning; }\r
  25         }\r
  26 \r
  27         public static bool CanWriteError\r
  28         {\r
  29             get { return Source.CanWriteError; }\r
  30         }\r
  31 \r
  32         public static void WriteInformation(CompositionTraceId traceId, string format, params object[] arguments)\r
  33         {\r
  34             EnsureEnabled(CanWriteInformation);\r
  35 \r
  36             Source.WriteInformation(traceId, format, arguments);\r
  37         }\r
  38 \r
  39         public static void WriteWarning(CompositionTraceId traceId, string format, params object[] arguments)\r
  40         {\r
  41             EnsureEnabled(CanWriteWarning);\r
  42 \r
  43             Source.WriteWarning(traceId, format, arguments);\r
  44         }\r
  45 \r
  46         public static void WriteError(CompositionTraceId traceId, string format, params object[] arguments)\r
  47         {\r
  48             EnsureEnabled(CanWriteError);\r
  49 \r
  50             Source.WriteError(traceId, format, arguments);\r
  51         }\r
  52 \r
  53         private static void EnsureEnabled(bool condition)\r
  54         {\r
  55             Assumes.IsTrue(condition, "To avoid unnecessary work when a trace level has not been enabled, check CanWriteXXX before calling this method.");\r
  56         }\r
  57     }\r
  58 }\r