Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System/sys/system/configuration/SettingsPropertyCollection.cs

@@ -0,0 +1,155 @@
+//------------------------------------------------------------------------------
+// <copyright file="SettingsPropertyCollection.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Configuration {
+    using  System.Collections;
+    using  System.Collections.Specialized;
+    using  System.Runtime.Serialization;
+    using  System.Configuration.Provider;
+    using  System.Globalization;
+    using  System.IO;
+    using System.Runtime.Serialization.Formatters.Binary;
+    using System.Xml.Serialization;
+    using System.ComponentModel;
+
+   ////////////////////////////////////////////////////////////
+   ////////////////////////////////////////////////////////////
+   ////////////////////////////////////////////////////////////
+   public class SettingsPropertyCollection : IEnumerable, ICloneable, ICollection
+   {
+       private Hashtable _Hashtable = null;
+       private bool      _ReadOnly = false;
+
+
+       ////////////////////////////////////////////////////////////
+       ////////////////////////////////////////////////////////////
+       public SettingsPropertyCollection()
+       {
+           _Hashtable = new Hashtable(10, StringComparer.CurrentCultureIgnoreCase);
+       }
+
+       ////////////////////////////////////////////////////////////
+       ////////////////////////////////////////////////////////////
+       public void Add(SettingsProperty property)
+       {
+           if (_ReadOnly)
+               throw new NotSupportedException();
+
+           OnAdd(property);
+           _Hashtable.Add(property.Name, property);
+           try {
+               OnAddComplete(property);
+           }
+           catch {
+               _Hashtable.Remove(property.Name);
+               throw;
+           }
+       }
+
+       ////////////////////////////////////////////////////////////
+       ////////////////////////////////////////////////////////////
+       public void Remove(string name)
+       {
+           if (_ReadOnly)
+               throw new NotSupportedException();
+           SettingsProperty toRemove = (SettingsProperty)_Hashtable[name];
+           if (toRemove == null)
+               return;
+           OnRemove(toRemove);
+           _Hashtable.Remove(name);
+           try {
+               OnRemoveComplete(toRemove);
+           }
+           catch {
+               _Hashtable.Add(name, toRemove);
+               throw;
+           }
+
+       }
+
+       ////////////////////////////////////////////////////////////
+       ////////////////////////////////////////////////////////////
+       public SettingsProperty this[string name]
+       {
+           get {
+               return _Hashtable[name] as SettingsProperty;
+           }
+       }
+
+       ////////////////////////////////////////////////////////////
+       ////////////////////////////////////////////////////////////
+       public IEnumerator GetEnumerator()
+       {
+           return _Hashtable.Values.GetEnumerator();
+       }
+
+       ////////////////////////////////////////////////////////////
+       ////////////////////////////////////////////////////////////
+       public object Clone()
+       {
+           return new SettingsPropertyCollection(_Hashtable);
+       }
+
+       ////////////////////////////////////////////////////////////
+       ////////////////////////////////////////////////////////////
+       public void SetReadOnly()
+       {
+           if (_ReadOnly)
+               return;
+           _ReadOnly = true;
+       }
+
+       ////////////////////////////////////////////////////////////
+       ////////////////////////////////////////////////////////////
+       public void Clear() {
+           if (_ReadOnly)
+               throw new NotSupportedException();
+           OnClear();
+           _Hashtable.Clear();
+           OnClearComplete();
+       }
+
+
+       ////////////////////////////////////////////////////////////
+       ////////////////////////////////////////////////////////////
+       // On* Methods for deriving classes to override.  These have
+       // been modeled after the CollectionBase class but have
+       // been stripped of their "index" parameters as there is no
+       // visible index to this collection.
+       
+       protected virtual void OnAdd(SettingsProperty property) {}
+
+       protected virtual void OnAddComplete(SettingsProperty property) {}
+
+       protected virtual void OnClear() {}
+
+       protected virtual void OnClearComplete() {}
+
+       protected virtual void OnRemove(SettingsProperty property) {}
+
+       protected virtual void OnRemoveComplete(SettingsProperty property) {}
+
+
+       ////////////////////////////////////////////////////////////
+       ////////////////////////////////////////////////////////////
+       // ICollection interface
+       public int       Count           { get { return _Hashtable.Count; } }
+       public bool      IsSynchronized  { get { return false; } }
+       public object    SyncRoot        { get { return this; } }
+
+       public void CopyTo(Array array, int index)
+       {
+           _Hashtable.Values.CopyTo(array, index);
+       }
+
+       /////////////////////////////////////////////////////////////////////////////
+       /////////////////////////////////////////////////////////////////////////////
+       private SettingsPropertyCollection(Hashtable h)
+       {
+           _Hashtable = (Hashtable)h.Clone();
+       }
+   }
+}