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The Labs \ Source Viewer \ SSCLI \ System.Diagnostics \ SourceElementsCollection

SSCLI
  1. //------------------------------------------------------------------------------
  2. // <copyright file="SourceElementsCollection .cs" company="Microsoft Corporation">
  3. //
  4. // Copyright (c) 2006 Microsoft Corporation. All rights reserved.
  5. //
  6. // The use and distribution terms for this software are contained in the file
  7. // named license.txt, which can be found in the root of this distribution.
  8. // By using this software in any fashion, you are agreeing to be bound by the
  9. // terms of this license.
  10. //
  11. // You must not remove this notice, or any other, from this software.
  12. //
  13. // </copyright>
  14. //------------------------------------------------------------------------------
  15. using System.Configuration;
  16. using System.Collections;
  17. using System.Collections.Specialized;
  18. using System.Xml;
  20. namespace System.Diagnostics
  21. {
  22.     [ConfigurationCollection(typeof(SourceElement), AddItemName = "source", CollectionType = ConfigurationElementCollectionType.BasicMap)]
  23.     internal class SourceElementsCollection : ConfigurationElementCollection
  24.     {
  25.        
  26.         public new SourceElement this[string name]
  27.         {
  28.             get { return (SourceElement)BaseGet(name); }
  29.         }
  30.        
  31.         protected override string ElementName {
  32.             get { return "source"; }
  33.         }
  34.        
  35.         public override ConfigurationElementCollectionType CollectionType {
  36.             get { return ConfigurationElementCollectionType.BasicMap; }
  37.         }
  38.        
  39.         protected override ConfigurationElement CreateNewElement()
  40.         {
  41.             SourceElement se = new SourceElement();
  42.             se.Listeners.InitializeDefaultInternal();
  43.             return se;
  44.         }
  45.        
  46.         protected override object GetElementKey(ConfigurationElement element)
  47.         {
  48.             return ((SourceElement)element).Name;
  49.         }
  50.     }
  51.    
  52.    
  53.     internal class SourceElement : ConfigurationElement
  54.     {
  55.         private static readonly ConfigurationPropertyCollection _properties;
  56.         private static readonly ConfigurationProperty _propName = new ConfigurationProperty("name", typeof(string), "", ConfigurationPropertyOptions.IsRequired);
  57.         private static readonly ConfigurationProperty _propSwitchName = new ConfigurationProperty("switchName", typeof(string), null, ConfigurationPropertyOptions.None);
  58.         private static readonly ConfigurationProperty _propSwitchValue = new ConfigurationProperty("switchValue", typeof(string), null, ConfigurationPropertyOptions.None);
  59.         private static readonly ConfigurationProperty _propSwitchType = new ConfigurationProperty("switchType", typeof(string), null, ConfigurationPropertyOptions.None);
  60.         private static readonly ConfigurationProperty _propListeners = new ConfigurationProperty("listeners", typeof(ListenerElementsCollection), new ListenerElementsCollection(), ConfigurationPropertyOptions.None);
  61.        
  62.         private Hashtable _attributes;
  63.        
  64.         static SourceElement()
  65.         {
  66.             _properties = new ConfigurationPropertyCollection();
  67.             _properties.Add(_propName);
  68.             _properties.Add(_propSwitchName);
  69.             _properties.Add(_propSwitchValue);
  70.             _properties.Add(_propSwitchType);
  71.             _properties.Add(_propListeners);
  72.         }
  73.        
  74.         public Hashtable Attributes {
  75.             get {
  76.                 if (_attributes == null)
  77.                     _attributes = new Hashtable(StringComparer.OrdinalIgnoreCase);
  78.                 return _attributes;
  79.             }
  80.         }
  81.        
  82.         [ConfigurationProperty("listeners")]
  83.         public ListenerElementsCollection Listeners {
  84.             get { return (ListenerElementsCollection)this[_propListeners]; }
  85.         }
  86.        
  87.         [ConfigurationProperty("name", IsRequired = true, DefaultValue = "")]
  88.         public string Name {
  89.             get { return (string)this[_propName]; }
  90.         }
  91.        
  92.         protected override ConfigurationPropertyCollection Properties {
  93.             get { return _properties; }
  94.         }
  95.        
  96.         [ConfigurationProperty("switchName")]
  97.         public string SwitchName {
  98.             get { return (string)this[_propSwitchName]; }
  99.         }
  100.        
  101.         [ConfigurationProperty("switchValue")]
  102.         public string SwitchValue {
  103.             get { return (string)this[_propSwitchValue]; }
  104.         }
  105.        
  106.         [ConfigurationProperty("switchType")]
  107.         public string SwitchType {
  108.             get { return (string)this[_propSwitchType]; }
  109.         }
  110.        
  111.        
  112.         protected override void DeserializeElement(XmlReader reader, bool serializeCollectionKey)
  113.         {
  114.             base.DeserializeElement(reader, serializeCollectionKey);
  115.            
  116.             if (!String.IsNullOrEmpty(SwitchName) && !String.IsNullOrEmpty(SwitchValue))
  117.                 throw new ConfigurationErrorsException(SR.GetString(SR.Only_specify_one, Name));
  118.         }
  119.        
  120.         protected override bool OnDeserializeUnrecognizedAttribute(string name, string value)
  121.         {
  122.             ConfigurationProperty _propDynamic = new ConfigurationProperty(name, typeof(string), value);
  123.             _properties.Add(_propDynamic);
  124.             base[_propDynamic] = value;
  125.             // Add them to the property bag
  126.             Attributes.Add(name, value);
  127.             return true;
  128.         }
  129.        
  130.         internal void ResetProperties()
  131.         {
  132.             // blow away any UnrecognizedAttributes that we have deserialized earlier
  133.             if (_attributes != null) {
  134.                 _attributes.Clear();
  135.                 _properties.Clear();
  136.                 _properties.Add(_propName);
  137.                 _properties.Add(_propSwitchName);
  138.                 _properties.Add(_propSwitchValue);
  139.                 _properties.Add(_propSwitchType);
  140.                 _properties.Add(_propListeners);
  141.             }
  142.         }
  143.     }
  144.    
  145. }

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