mcs/class/System/System.Diagnostics/TraceSwitch.cs

   1 //
   2 // System.Diagnostics.TraceSwtich.cs
   3 //
   4 // Comments from John R. Hicks <angryjohn69@nc.rr.com> original implementation
   5 // can be found at: /mcs/docs/apidocs/xml/en/System.Diagnostics
   6 //
   7 // Author:
   8 //      John R. Hicks (angryjohn69@nc.rr.com)
   9 //      Jonathan Pryor (jonpryor@vt.edu)
  10 //
  11 // (C) 2001-2002
  12 //
  13
  14 namespace System.Diagnostics
  15 {
  16         public class TraceSwitch : Switch
  17         {
  18                 public TraceSwitch(string displayName, string description)
  19                         : base(displayName, description)
  20                 {
  21                 }
  22
  23                 public TraceLevel Level {
  24                         get {return (TraceLevel) SwitchSetting;}
  25                         set {
  26                                 if (!Enum.IsDefined (typeof(TraceLevel), value))
  27                                         throw new ArgumentException ("value");
  28                                 SwitchSetting = (int) value;
  29                         }
  30                 }
  31
  32                 public bool TraceError {
  33                         get {return SwitchSetting >= (int) TraceLevel.Error;}
  34                 }
  35
  36                 public bool TraceWarning {
  37                         get {return SwitchSetting >= (int) TraceLevel.Warning;}
  38                 }
  39
  40                 public bool TraceInfo {
  41                         get {return SwitchSetting >= (int) TraceLevel.Info;}
  42                 }
  43
  44                 public bool TraceVerbose {
  45                         get {return SwitchSetting >= (int) TraceLevel.Verbose;}
  46                 }
  47
  48                 // .NET accepts values over 4; they're equivalent to TraceLevel.Verbose
  49                 // For -1, .NET crashes.  (Oops!)  Other negative numbers work with an
  50                 // equivalent to setting SwitchSetting to TraceLevel.Off.
  51                 // The logic for the accessors will cope with values >= 4, so we'll just
  52                 // check for negative numbers.
  53                 protected override void OnSwitchSettingChanged()
  54                 {
  55                         if (SwitchSetting < 0)
  56                                 SwitchSetting = (int) TraceLevel.Off;
  57                 }
  58         }
  59 }
  60