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

   1 //
   2 // System.Web.UI.ExpressionBindingCollection.cs
   3 //
   4 // Authors:
   5 //      Sanjay Gupta gsanjay@novell.com)
   6 //
   7 // (C) 2004 Novell, Inc. (http://www.novell.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 #if NET_2_0
  32 using System;
  33 using System.Collections;
  34
  35 namespace System.Web.UI {
  36
  37         public sealed class ExpressionBindingCollection : ICollection, IEnumerable
  38         {
  39                 Hashtable list;
  40                 ArrayList removed;
  41
  42                 public ExpressionBindingCollection ()
  43                 {
  44                         list = new Hashtable ();
  45                         removed = new ArrayList ();
  46                 }
  47
  48                 public int Count {
  49                         get { return list.Count; }
  50                 }
  51
  52                 public bool IsReadOnly {
  53                         get { return list.IsReadOnly; }
  54                 }
  55
  56                 public bool IsSynchronized {
  57                         get { return list.IsSynchronized; }
  58                 }
  59
  60                 public ExpressionBinding this [string propertyName] {
  61                         get { return list [propertyName] as ExpressionBinding; }
  62                 }
  63
  64                 public string [] RemovedBindings {
  65                         get { return (string []) removed.ToArray (typeof (string)); }
  66                 }
  67
  68                 public object SyncRoot {
  69                         get { return list.SyncRoot; }
  70                 }
  71
  72                 public void Add (ExpressionBinding binding)
  73                 {
  74                         list.Add (binding.PropertyName, binding);
  75                         OnChanged (new EventArgs ());
  76                 }
  77
  78                 public void Clear ()
  79                 {
  80                         list.Clear ();
  81                         removed.Clear ();
  82                         OnChanged (new EventArgs ());
  83                 }
  84
  85                 public bool Contains (string propertyName)
  86                 {
  87                         return list.Contains (propertyName);
  88                 }
  89
  90                 public void CopyTo (Array array, int index)
  91                 {
  92                         list.CopyTo (array, index);
  93                 }
  94
  95                 public void CopyTo (ExpressionBinding [] bindings, int index)
  96                 {
  97                         if (index < 0)
  98                                 throw new ArgumentNullException ("Index cannot be negative");
  99                         if (index >= bindings.Length)
 100                                 throw new ArgumentException ("Index cannot be greater than or equal to length of array passed");
 101                         if (list.Count > (bindings.Length - index + 1))
 102                                 throw new ArgumentException ("Number of elements in source is greater than available space from index to end of destination");
 103
 104                         foreach (string key in list.Keys)
 105                                 bindings [index++] = (ExpressionBinding) list [key];
 106                 }
 107
 108                 public IEnumerator GetEnumerator ()
 109                 {
 110                         return list.GetEnumerator ();
 111                 }
 112
 113                 public void Remove (ExpressionBinding binding)
 114                 {
 115                         Remove(binding.PropertyName, true);
 116                 }
 117
 118                 public void Remove (string propertyName)
 119                 {
 120                         Remove (propertyName, true);
 121                 }
 122
 123                 public void Remove (string propertyName, bool addToRemovedList)
 124                 {
 125                         if (addToRemovedList)
 126                                 removed.Add (String.Empty);
 127                         else
 128                                 removed.Add (propertyName);
 129
 130                         list.Remove (propertyName);
 131                         OnChanged (new EventArgs ());
 132                 }
 133
 134                 public event EventHandler Changed;
 135
 136                 protected void OnChanged (EventArgs e)
 137                 {
 138                         if (Changed != null)
 139                                 Changed (this, e);
 140                 }
 141
 142         }
 143 }
 144 #endif