mcs/class/System/System.Diagnostics/TraceListenerCollection.cs

   1 //
   2 // System.Diagnostics.TraceListenerCollection.cs
   3 //
   4 // Authors:
   5 //   Jonathan Pryor (jonpryor@vt.edu)
   6 //
   7 // Comments from John R. Hicks <angryjohn69@nc.rr.com> original implementation
   8 // can be found at: /mcs/docs/apidocs/xml/en/System.Diagnostics
   9 //
  10 // (C) 2002 Jonathan Pryor
  11 //
  12
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34
  35 using System;
  36 using System.Collections;
  37 using System.Diagnostics;
  38 using System.Globalization;
  39
  40 namespace System.Diagnostics {
  41
  42         public class TraceListenerCollection : IList, ICollection, IEnumerable {
  43
  44                 private ArrayList listeners = ArrayList.Synchronized (new ArrayList (1));
  45
  46                 internal TraceListenerCollection ()
  47                 {
  48                         Add (new DefaultTraceListener ());
  49                 }
  50
  51                 public int Count{
  52                         get {return listeners.Count;}
  53                 }
  54
  55                 public TraceListener this [string name] {
  56                         get {
  57                                 lock (listeners.SyncRoot) {
  58                                         foreach (TraceListener listener in listeners) {
  59                                                 if (listener.Name == name)
  60                                                         return listener;
  61                                         }
  62                                 }
  63                                 return null;
  64                         }
  65                 }
  66
  67                 public TraceListener this [int index] {
  68                         get {return (TraceListener) listeners[index];}
  69                         set {
  70                                 InitializeListener (value);
  71                                 listeners[index] = value;
  72                         }
  73                 }
  74
  75                 object IList.this [int index] {
  76                         get {return listeners[index];}
  77                         set {
  78                                 TraceListener l = (TraceListener) value;
  79                                 InitializeListener (l);
  80                                 this[index] = l;
  81                         }
  82                 }
  83
  84                 bool ICollection.IsSynchronized {
  85                         get {return listeners.IsSynchronized;}
  86                 }
  87
  88                 object ICollection.SyncRoot {
  89                         get {return listeners.SyncRoot;}
  90                 }
  91
  92                 bool IList.IsFixedSize {
  93                         get {return listeners.IsFixedSize;}
  94                 }
  95
  96                 bool IList.IsReadOnly {
  97                         get {return listeners.IsReadOnly;}
  98                 }
  99
 100                 public int Add (TraceListener listener)
 101                 {
 102                         InitializeListener (listener);
 103                         return listeners.Add (listener);
 104                 }
 105
 106                 private void InitializeListener (TraceListener listener)
 107                 {
 108                         listener.IndentLevel = TraceImpl.IndentLevel;
 109                         listener.IndentSize = TraceImpl.IndentSize;
 110                 }
 111
 112                 private void InitializeRange (IList listeners)
 113                 {
 114                         int e = listeners.Count;
 115                         for (int i = 0; i != e; ++i)
 116                                 InitializeListener (
 117                                         (TraceListener) listeners[i]);
 118                 }
 119
 120                 public void AddRange (TraceListener[] value)
 121                 {
 122                         InitializeRange (value);
 123                         listeners.AddRange (value);
 124                 }
 125
 126                 public void AddRange (TraceListenerCollection value)
 127                 {
 128                         InitializeRange (value);
 129                         listeners.AddRange (value.listeners);
 130                 }
 131
 132                 public void Clear ()
 133                 {
 134                         listeners.Clear ();
 135                 }
 136
 137                 public bool Contains (TraceListener listener)
 138                 {
 139                         return listeners.Contains (listener);
 140                 }
 141
 142                 public void CopyTo (TraceListener[] listeners, int index)
 143                 {
 144                         listeners.CopyTo (listeners, index);
 145                 }
 146
 147                 public IEnumerator GetEnumerator ()
 148                 {
 149                         return listeners.GetEnumerator ();
 150                 }
 151
 152                 void ICollection.CopyTo (Array array, int index)
 153                 {
 154                         listeners.CopyTo (array, index);
 155                 }
 156
 157                 int IList.Add (object value)
 158                 {
 159                         if (value is TraceListener)
 160                                 return Add ((TraceListener) value);
 161                         throw new NotSupportedException (Locale.GetText (
 162                                 "You can only add TraceListener objects to the collection"));
 163                 }
 164
 165                 bool IList.Contains (object value)
 166                 {
 167                         if (value is TraceListener)
 168                                 return listeners.Contains (value);
 169                         return false;
 170                 }
 171
 172                 int IList.IndexOf (object value)
 173                 {
 174                         if (value is TraceListener)
 175                                 return listeners.IndexOf (value);
 176                         return -1;
 177                 }
 178
 179                 void IList.Insert (int index, object value)
 180                 {
 181                         if (value is TraceListener) {
 182                                 Insert (index, (TraceListener) value);
 183                                 return;
 184                         }
 185                         throw new NotSupportedException (Locale.GetText (
 186                                 "You can only insert TraceListener objects into the collection"));
 187                 }
 188
 189                 void IList.Remove (object value)
 190                 {
 191                         if (value is TraceListener)
 192                                 listeners.Remove (value);
 193                 }
 194
 195                 public int IndexOf (TraceListener listener)
 196                 {
 197                         return listeners.IndexOf (listener);
 198                 }
 199
 200                 public void Insert (int index, TraceListener listener)
 201                 {
 202                         InitializeListener (listener);
 203                         listeners.Insert (index, listener);
 204                 }
 205
 206                 public void Remove (string name)
 207                 {
 208                         TraceListener found = null;
 209
 210                         lock (listeners.SyncRoot) {
 211                                 foreach (TraceListener listener in listeners) {
 212                                         if (listener.Name == name) {
 213                                                 found = listener;
 214                                                 break;
 215                                         }
 216                                 }
 217
 218                                 if (found != null)
 219                                         listeners.Remove (found);
 220                                 else
 221                                         throw new ArgumentException (Locale.GetText (
 222                                                 "TraceListener " + name + " was not in the collection"));
 223                         }
 224                 }
 225
 226                 public void Remove (TraceListener listener)
 227                 {
 228                         listeners.Remove (listener);
 229                 }
 230
 231                 public void RemoveAt (int index)
 232                 {
 233                         listeners.RemoveAt (index);
 234                 }
 235         }
 236 }
 237