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

   1 //
   2 // System.Web.UI.ControlCollection.cs
   3 //
   4 // Duncan Mak  (duncan@ximian.com)
   5 //
   6 // (C) Ximian, Inc.
   7 //
   8
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System;
  31 using System.Collections;
  32
  33 namespace System.Web.UI {
  34
  35         public class ControlCollection : ICollection, IEnumerable
  36         {
  37                 ArrayList list;
  38                 Control owner;
  39
  40                 public ControlCollection (Control owner)
  41                 {
  42                         if (owner == null)
  43                                 throw new ArgumentException ();
  44
  45                         list = new ArrayList ();
  46                         this.owner = owner;
  47                 }
  48
  49                 internal ControlCollection (Control owner, bool shortList)
  50                 {
  51                         if (owner == null)
  52                                 throw new ArgumentException ();
  53
  54                         list = new ArrayList (shortList ? 1 : 0);
  55                         this.owner = owner;
  56                 }
  57
  58                 public int Count {
  59                         get { return list.Count; }
  60                 }
  61
  62                 public bool IsReadOnly {
  63                         get { return list.IsReadOnly; }
  64                 }
  65
  66                 public bool  IsSynchronized {
  67                         get { return list.IsSynchronized; }
  68                 }
  69
  70                 public virtual Control this [int index] {
  71                         get { return list [index] as Control; }
  72                 }
  73
  74                 protected Control Owner {
  75                         get { return owner; }
  76                 }
  77
  78                 public object SyncRoot {
  79                         get { return list.SyncRoot; }
  80                 }
  81
  82                 public virtual void Add (Control child)
  83                 {
  84                         if (child == null)
  85                                 throw new ArgumentNullException ();
  86                         if (IsReadOnly)
  87                                 throw new HttpException ();
  88
  89                         list.Add (child);
  90                         owner.AddedControl (child, list.Count - 1);
  91                 }
  92
  93                 public virtual void AddAt (int index, Control child)
  94                 {
  95                         if (child == null) // maybe we should check for ! (child is Control)?
  96                                 throw new ArgumentNullException ();
  97
  98                         if ((index < -1) || (index > Count))
  99                                 throw new ArgumentOutOfRangeException ();
 100
 101                         if (IsReadOnly)
 102                                 throw new HttpException ();
 103
 104                         if (index == -1){
 105                                 Add (child);
 106                         } else {
 107                                 list.Insert (index, child);
 108                                 owner.AddedControl (child, index);
 109                         }
 110                 }
 111
 112                 public virtual void Clear ()
 113                 {
 114                         list.Clear ();
 115                         if (owner != null)
 116                                 owner.ResetChildNames ();
 117                 }
 118
 119                 public virtual bool Contains (Control c)
 120                 {
 121                         return list.Contains (c);
 122                 }
 123
 124                 public void CopyTo (Array array, int index)
 125                 {
 126                         list.CopyTo (array, index);
 127                 }
 128
 129                 public IEnumerator GetEnumerator ()
 130                 {
 131                         return list.GetEnumerator ();
 132                 }
 133
 134                 public virtual int IndexOf (Control c)
 135                 {
 136                         return list.IndexOf (c);
 137                 }
 138
 139                 public virtual void Remove (Control value)
 140                 {
 141                         list.Remove (value);
 142                         owner.RemovedControl (value);
 143                 }
 144
 145                 public virtual void RemoveAt (int index)
 146                 {
 147                         if (IsReadOnly)
 148                                 throw new HttpException ();
 149
 150                         Control value = (Control) list [index];
 151                         list.RemoveAt (index);
 152                         owner.RemovedControl (value);
 153                 }
 154         }
 155 }