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                         : this (true)
  48                 {
  49                 }
  50
  51                 internal TraceListenerCollection (bool addDefault)
  52                 {
  53                         if (addDefault)
  54                                 Add (new DefaultTraceListener ());
  55                 }
  56
  57                 public int Count{
  58                         get {return listeners.Count;}
  59                 }
  60
  61                 public TraceListener this [string name] {
  62                         get {
  63                                 lock (listeners.SyncRoot) {
  64                                         foreach (TraceListener listener in listeners) {
  65                                                 if (listener.Name == name)
  66                                                         return listener;
  67                                         }
  68                                 }
  69                                 return null;
  70                         }
  71                 }
  72
  73                 public TraceListener this [int index] {
  74                         get {return (TraceListener) listeners[index];}
  75                         set {
  76                                 InitializeListener (value);
  77                                 listeners[index] = value;
  78                         }
  79                 }
  80
  81                 object IList.this [int index] {
  82                         get {return listeners[index];}
  83                         set {
  84                                 TraceListener l = (TraceListener) value;
  85                                 InitializeListener (l);
  86                                 this[index] = l;
  87                         }
  88                 }
  89
  90                 bool ICollection.IsSynchronized {
  91                         get {return listeners.IsSynchronized;}
  92                 }
  93
  94                 object ICollection.SyncRoot {
  95                         get {return listeners.SyncRoot;}
  96                 }
  97
  98                 bool IList.IsFixedSize {
  99                         get {return listeners.IsFixedSize;}
 100                 }
 101
 102                 bool IList.IsReadOnly {
 103                         get {return listeners.IsReadOnly;}
 104                 }
 105
 106                 public int Add (TraceListener listener)
 107                 {
 108                         InitializeListener (listener);
 109                         return listeners.Add (listener);
 110                 }
 111
 112                 internal void Add (TraceListener listener, TraceImplSettings settings)
 113                 {
 114                         listener.IndentLevel = settings.IndentLevel;
 115                         listener.IndentSize  = settings.IndentSize;
 116                         listeners.Add (listener);
 117                 }
 118
 119                 private void InitializeListener (TraceListener listener)
 120                 {
 121                         listener.IndentLevel = TraceImpl.IndentLevel;
 122                         listener.IndentSize = TraceImpl.IndentSize;
 123                 }
 124
 125                 private void InitializeRange (IList listeners)
 126                 {
 127                         int e = listeners.Count;
 128                         for (int i = 0; i != e; ++i)
 129                                 InitializeListener (
 130                                         (TraceListener) listeners[i]);
 131                 }
 132
 133                 public void AddRange (TraceListener[] value)
 134                 {
 135                         InitializeRange (value);
 136                         listeners.AddRange (value);
 137                 }
 138
 139                 public void AddRange (TraceListenerCollection value)
 140                 {
 141                         InitializeRange (value);
 142                         listeners.AddRange (value.listeners);
 143                 }
 144
 145                 public void Clear ()
 146                 {
 147                         listeners.Clear ();
 148                 }
 149
 150                 public bool Contains (TraceListener listener)
 151                 {
 152                         return listeners.Contains (listener);
 153                 }
 154
 155                 public void CopyTo (TraceListener[] listeners, int index)
 156                 {
 157                         listeners.CopyTo (listeners, index);
 158                 }
 159
 160                 public IEnumerator GetEnumerator ()
 161                 {
 162                         return listeners.GetEnumerator ();
 163                 }
 164
 165                 void ICollection.CopyTo (Array array, int index)
 166                 {
 167                         listeners.CopyTo (array, index);
 168                 }
 169
 170                 int IList.Add (object value)
 171                 {
 172                         if (value is TraceListener)
 173                                 return Add ((TraceListener) value);
 174                         throw new NotSupportedException (Locale.GetText (
 175                                 "You can only add TraceListener objects to the collection"));
 176                 }
 177
 178                 bool IList.Contains (object value)
 179                 {
 180                         if (value is TraceListener)
 181                                 return listeners.Contains (value);
 182                         return false;
 183                 }
 184
 185                 int IList.IndexOf (object value)
 186                 {
 187                         if (value is TraceListener)
 188                                 return listeners.IndexOf (value);
 189                         return -1;
 190                 }
 191
 192                 void IList.Insert (int index, object value)
 193                 {
 194                         if (value is TraceListener) {
 195                                 Insert (index, (TraceListener) value);
 196                                 return;
 197                         }
 198                         throw new NotSupportedException (Locale.GetText (
 199                                 "You can only insert TraceListener objects into the collection"));
 200                 }
 201
 202                 void IList.Remove (object value)
 203                 {
 204                         if (value is TraceListener)
 205                                 listeners.Remove (value);
 206                 }
 207
 208                 public int IndexOf (TraceListener listener)
 209                 {
 210                         return listeners.IndexOf (listener);
 211                 }
 212
 213                 public void Insert (int index, TraceListener listener)
 214                 {
 215                         InitializeListener (listener);
 216                         listeners.Insert (index, listener);
 217                 }
 218
 219                 public void Remove (string name)
 220                 {
 221                         TraceListener found = null;
 222
 223                         lock (listeners.SyncRoot) {
 224                                 foreach (TraceListener listener in listeners) {
 225                                         if (listener.Name == name) {
 226                                                 found = listener;
 227                                                 break;
 228                                         }
 229                                 }
 230
 231                                 if (found != null)
 232                                         listeners.Remove (found);
 233                                 else
 234                                         throw new ArgumentException (Locale.GetText (
 235                                                 "TraceListener " + name + " was not in the collection"));
 236                         }
 237                 }
 238
 239                 public void Remove (TraceListener listener)
 240                 {
 241                         listeners.Remove (listener);
 242                 }
 243
 244                 public void RemoveAt (int index)
 245                 {
 246                         listeners.RemoveAt (index);
 247                 }
 248         }
 249 }
 250