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 using System;
  10 using System.Collections;
  11
  12 namespace System.Web.UI {
  13
  14         public class ControlCollection : ICollection, IEnumerable
  15         {
  16                 ArrayList list = new ArrayList ();
  17                 Control owner;
  18
  19                 public ControlCollection (Control owner)
  20                 {
  21                         if (owner == null)
  22                                 throw new ArgumentException ();
  23
  24                         this.owner = owner;
  25                 }
  26
  27                 public int Count {
  28                         get { return list.Count; }
  29                 }
  30
  31                 public bool IsReadOnly {
  32                         get { return list.IsReadOnly; }
  33                 }
  34
  35                 public bool  IsSynchronized {
  36                         get { return list.IsSynchronized; }
  37                 }
  38
  39                 public virtual Control this [int index] {
  40                         get { return list [index] as Control; }
  41                 }
  42
  43                 protected Control Owner {
  44                         get { return owner; }
  45                 }
  46
  47                 public object SyncRoot {
  48                         get { return list.SyncRoot; }
  49                 }
  50
  51                 public virtual void Add (Control child)
  52                 {
  53                         if (child == null)
  54                                 throw new ArgumentNullException ();
  55                         if (IsReadOnly)
  56                                 throw new HttpException ();
  57
  58                         list.Add (child);
  59                         owner.AddedControl (child, list.Count - 1);
  60                 }
  61
  62                 public virtual void AddAt (int index, Control child)
  63                 {
  64                         if (child == null) // maybe we should check for ! (child is Control)?
  65                                 throw new ArgumentNullException ();
  66
  67                         if ((index < -1) || (index > Count))
  68                                 throw new ArgumentOutOfRangeException ();
  69
  70                         if (IsReadOnly)
  71                                 throw new HttpException ();
  72
  73                         if (index == -1){
  74                                 Add (child);
  75                         } else {
  76                                 list [index] = child;
  77                                 owner.AddedControl (child, index);
  78                         }
  79                 }
  80
  81                 public virtual void Clear ()
  82                 {
  83                         list.Clear ();
  84                 }
  85
  86                 public virtual bool Contains (Control c)
  87                 {
  88                         return list.Contains (c);
  89                 }
  90
  91                 public void CopyTo (Array array, int index)
  92                 {
  93                         list.CopyTo (array, index);
  94                 }
  95
  96                 public IEnumerator GetEnumerator ()
  97                 {
  98                         return list.GetEnumerator ();
  99                 }
 100
 101                 public virtual int IndexOf (Control c)
 102                 {
 103                         return list.IndexOf (c);
 104                 }
 105
 106                 public virtual void Remove (Control value)
 107                 {
 108                         list.Remove (value);
 109                         owner.RemovedControl (value);
 110                 }
 111
 112                 public virtual void RemoveAt (int index)
 113                 {
 114                         if (IsReadOnly)
 115                                 throw new HttpException ();
 116
 117                         Control value = (Control) list [index];
 118                         list.RemoveAt (index);
 119                         owner.RemovedControl (value);
 120                 }
 121         }
 122 }