mcs/class/System.Design/System.ComponentModel.Design/DesignSurfaceCollection.cs

   1 //
   2 // System.ComponentModel.Design.DesignSurfaceCollection
   3 //
   4 // Authors:
   5 //        Ivan N. Zlatev (contact i-nZ.net)
   6 //
   7 // (C) 2006 Ivan N. Zlatev
   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 #if NET_2_0
  31
  32 using System;
  33 using System.ComponentModel;
  34 using System.Collections;
  35
  36 namespace System.ComponentModel.Design
  37 {
  38         // A read-only collection of design surfaces.
  39         // A wrapper around a DesignerCollection, which get's the DesignSurface for the IDesignerHost
  40         // on the fly.
  41         //
  42         public sealed class DesignSurfaceCollection : ICollection, IEnumerable
  43         {
  44
  45                 private class DesignSurfaceEnumerator : IEnumerator
  46                 {
  47                         IEnumerator _designerCollectionEnumerator;
  48
  49                         public DesignSurfaceEnumerator (IEnumerator designerCollectionEnumerator)
  50                         {
  51                                 _designerCollectionEnumerator = designerCollectionEnumerator;
  52                         }
  53
  54                         public bool MoveNext ()
  55                         {
  56                                 return _designerCollectionEnumerator.MoveNext ();
  57                         }
  58
  59                         public void Reset ()
  60                         {
  61                                 _designerCollectionEnumerator.Reset ();
  62                         }
  63
  64                         public object Current {
  65                                 get {
  66                                         IDesignerHost designer = (IDesignerHost) _designerCollectionEnumerator.Current;
  67                                         DesignSurface surface = designer.GetService (typeof (DesignSurface)) as DesignSurface;
  68                                         if (surface == null)
  69                                                 throw new NotSupportedException ();
  70
  71                                         return surface;
  72                                 }
  73                         }
  74
  75                 } // DesignSurfaceEnumerator
  76
  77
  78                 private DesignerCollection _designers;
  79
  80                 internal DesignSurfaceCollection (DesignerCollection designers)
  81                 {
  82                         if (designers == null)
  83                                 designers = new DesignerCollection (null);
  84
  85                         _designers = designers;
  86                 }
  87
  88                 public int Count {
  89                         get { return _designers.Count; }
  90                 }
  91
  92                 public object this[int index] {
  93                         get {
  94                                 IDesignerHost designer = _designers[index];
  95                                 DesignSurface surface = designer.GetService (typeof (DesignSurface)) as DesignSurface;
  96                                 if (surface == null)
  97                                         throw new NotSupportedException ();
  98
  99                                 return surface;
 100                         }
 101                 }
 102
 103                 public void CopyTo (DesignSurface[] array, int index)
 104                 {
 105                         ((ICollection) this).CopyTo (array, index);
 106                 }
 107
 108                 void ICollection.CopyTo (Array array, int index)
 109                 {
 110                         foreach (DesignSurface surface in this) {
 111                                 array.SetValue (surface, index);
 112                                 index++;
 113                         }
 114                 }
 115
 116                 public IEnumerator GetEnumerator ()
 117                 {
 118                         return new DesignSurfaceEnumerator (_designers.GetEnumerator ());
 119                 }
 120
 121                 IEnumerator IEnumerable.GetEnumerator ()
 122                 {
 123                         return GetEnumerator ();
 124                 }
 125
 126                 int ICollection.Count {
 127                         get { return this.Count; }
 128                 }
 129
 130                 bool ICollection.IsSynchronized {
 131                         get { return false; }
 132                 }
 133
 134                 object ICollection.SyncRoot {
 135                         get { return null; }
 136                 }
 137
 138         }
 139
 140 }
 141 #endif