mcs/class/System.Web/System.Web.UI/DataBindingCollection.cs

   1 //
   2 // System.Web.UI.DataBindingCollection.cs
   3 //
   4 // Duncan Mak  (duncan@ximian.com)
   5 //
   6 // (C) Ximian, Inc.
   7 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.Collections;
  30 using System.Security.Permissions;
  31
  32 namespace System.Web.UI {
  33
  34         // CAS - no InheritanceDemand here as the class is sealed
  35         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  36         public sealed class DataBindingCollection : ICollection, IEnumerable
  37         {
  38                 Hashtable list;
  39                 ArrayList removed;
  40
  41                 public DataBindingCollection ()
  42                 {
  43                         list = new Hashtable ();
  44                         removed = new ArrayList ();
  45                 }
  46
  47                 public int Count {
  48                         get { return list.Count; }
  49                 }
  50
  51                 public bool IsReadOnly {
  52                         get { return list.IsReadOnly; }
  53                 }
  54
  55                 public bool IsSynchronized {
  56                         get { return list.IsSynchronized; }
  57                 }
  58
  59                 public DataBinding this [string propertyName] {
  60                         get { return list [propertyName] as DataBinding; }
  61                 }
  62
  63                 public string [] RemovedBindings {
  64                         get { return (string []) removed.ToArray (typeof (string)); }
  65                 }
  66
  67                 public object SyncRoot {
  68                         get { return list.SyncRoot; }
  69                 }
  70
  71                 public void Add (DataBinding binding)
  72                 {
  73                         list.Add (binding.PropertyName, binding);
  74                         RaiseChanged ();
  75                 }
  76
  77                 public void Clear ()
  78                 {
  79                         list.Clear ();
  80                 }
  81
  82                 public void CopyTo (Array array, int index)
  83                 {
  84                         list.CopyTo (array, index);
  85                 }
  86
  87                 public IEnumerator GetEnumerator ()
  88                 {
  89                         return list.GetEnumerator ();
  90                 }
  91
  92                 public void Remove (DataBinding binding)
  93                 {
  94                         string key = binding.PropertyName;
  95                         Remove (key);
  96                 }
  97
  98                 public void Remove (string propertyName)
  99                 {
 100                         removed.Add (propertyName);
 101                         list.Remove (propertyName);
 102                         RaiseChanged ();
 103                 }
 104
 105                 public void Remove (string propertyName,
 106                                     bool addToRemovedList)
 107                 {
 108                         if (addToRemovedList)
 109                                 removed.Add (String.Empty); // LAMESPEC
 110                         else
 111                                 removed.Add (propertyName);
 112
 113                         list.Remove (propertyName);
 114                 }
 115
 116 #if NET_2_0
 117                 public bool Contains (string propertyName)
 118                 {
 119                         return list.Contains (propertyName);
 120                 }
 121
 122                 public event EventHandler Changed;
 123
 124                 public
 125 #else
 126                 internal event EventHandler Changed;
 127
 128                 internal
 129 #endif
 130                 void RaiseChanged ()
 131                 {
 132                         if (Changed != null)
 133                                 Changed (this, EventArgs.Empty);
 134                 }
 135         }
 136 }