1 // 2 // System.Web.UI.DataBindingCollection.cs 3 // 4 // Duncan Mak (duncan@ximian.com) 5 // 6 // (C) Ximian, Inc. 7 // Copyright (C) 2005-2010 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.ComponentModel; 30 using System.Collections; 31 using System.Security.Permissions; 32 33 namespace System.Web.UI { 34 35 // CAS - no InheritanceDemand here as the class is sealed 36 [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)] 37 public sealed class DataBindingCollection : ICollection, IEnumerable 38 { 39 static readonly object changedEvent = new object (); 40 Hashtable list; 41 ArrayList removed; 42 43 EventHandlerList events = new EventHandlerList (); 44 45 public event EventHandler Changed { 46 add { events.AddHandler (changedEvent, value); } 47 remove { events.RemoveHandler (changedEvent, value); } 48 } 49 DataBindingCollection()50 public DataBindingCollection () 51 { 52 list = new Hashtable (); 53 removed = new ArrayList (); 54 } 55 56 public int Count { 57 get { return list.Count; } 58 } 59 60 public bool IsReadOnly { 61 get { return list.IsReadOnly; } 62 } 63 64 public bool IsSynchronized { 65 get { return list.IsSynchronized; } 66 } 67 68 public DataBinding this [string propertyName] { 69 get { return list [propertyName] as DataBinding; } 70 } 71 72 public string [] RemovedBindings { 73 get { return (string []) removed.ToArray (typeof (string)); } 74 } 75 76 public object SyncRoot { 77 get { return list.SyncRoot; } 78 } 79 Add(DataBinding binding)80 public void Add (DataBinding binding) 81 { 82 list.Add (binding.PropertyName, binding); 83 RaiseChanged (); 84 } 85 Clear()86 public void Clear () 87 { 88 list.Clear (); 89 } 90 CopyTo(Array array, int index)91 public void CopyTo (Array array, int index) 92 { 93 list.Values.CopyTo (array, index); 94 } 95 GetEnumerator()96 public IEnumerator GetEnumerator () 97 { 98 return list.GetEnumerator (); 99 } 100 Remove(DataBinding binding)101 public void Remove (DataBinding binding) 102 { 103 string key = binding.PropertyName; 104 Remove (key); 105 } 106 Remove(string propertyName)107 public void Remove (string propertyName) 108 { 109 removed.Add (propertyName); 110 list.Remove (propertyName); 111 RaiseChanged (); 112 } 113 Remove(string propertyName, bool addToRemovedList)114 public void Remove (string propertyName, 115 bool addToRemovedList) 116 { 117 if (addToRemovedList) 118 removed.Add (String.Empty); // LAMESPEC 119 else 120 removed.Add (propertyName); 121 122 list.Remove (propertyName); 123 } 124 Contains(string propertyName)125 public bool Contains (string propertyName) 126 { 127 return list.Contains (propertyName); 128 } 129 RaiseChanged()130 internal void RaiseChanged () 131 { 132 EventHandler eh = events [changedEvent] as EventHandler; 133 if (eh != null) 134 eh (this, EventArgs.Empty); 135 } 136 } 137 } 138