mcs/class/Managed.Windows.Forms/System.Windows.Forms/BindingsCollection.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
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   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2004-2005 Novell, Inc.
  21 //
  22 // Authors:
  23 //      Peter Bartok    pbartok@novell.com
  24 //      Jackson Harper  jackson@ximian.com
  25 //
  26
  27
  28 // COMPLETE
  29
  30 using System.Collections;
  31 using System.ComponentModel;
  32
  33 namespace System.Windows.Forms {
  34         [DefaultEvent("CollectionChanged")]
  35         public class BindingsCollection : BaseCollection {
  36
  37 #region Public Constructors
  38                 internal BindingsCollection ()
  39                 {
  40                 }
  41                 #endregion      // Public Constructors
  42
  43                 #region Public Instance Properties
  44                 public override int Count {
  45                         get {
  46                                 return base.Count;
  47                         }
  48                 }
  49
  50                 public Binding this[int index] {
  51                         get {
  52                                 return (Binding)(base.List[index]);
  53                         }
  54                 }
  55                 #endregion      // Public Instance Properties
  56
  57                 #region Protected Instance Properties
  58                 protected override ArrayList List {
  59                         get {
  60                                 return base.List;
  61                         }
  62                 }
  63                 #endregion      // Protected Instance Properties
  64
  65                 #region Protected Instance Methods
  66                 protected internal void Add(Binding binding) {
  67                         AddCore(binding);
  68                 }
  69
  70                 protected virtual void AddCore (Binding dataBinding)
  71                 {
  72                         CollectionChangeEventArgs args = new CollectionChangeEventArgs (CollectionChangeAction.Add, dataBinding);
  73                         OnCollectionChanging (args);
  74                         base.List.Add(dataBinding);
  75                         OnCollectionChanged (args);
  76                 }
  77
  78                 protected internal void Clear() {
  79                         ClearCore();
  80                 }
  81
  82                 protected virtual void ClearCore()
  83                 {
  84                         CollectionChangeEventArgs args = new CollectionChangeEventArgs(CollectionChangeAction.Refresh, null);
  85                         OnCollectionChanging (args);
  86                         base.List.Clear();
  87                         OnCollectionChanged (args);
  88                 }
  89
  90                 protected virtual void OnCollectionChanged(System.ComponentModel.CollectionChangeEventArgs ccevent) {
  91                         if (CollectionChanged!=null) CollectionChanged(this, ccevent);
  92                 }
  93
  94                 protected virtual void OnCollectionChanging (CollectionChangeEventArgs e)
  95                 {
  96                         if (CollectionChanging != null)
  97                                 CollectionChanging (this, e);
  98                 }
  99
 100                 protected internal void Remove(Binding binding) {
 101                         RemoveCore(binding);
 102                 }
 103
 104                 protected internal void RemoveAt(int index) {
 105                         base.List.RemoveAt(index);
 106                         OnCollectionChanged(new CollectionChangeEventArgs(CollectionChangeAction.Remove, base.List));
 107                 }
 108
 109                 protected virtual void RemoveCore(Binding dataBinding)
 110                 {
 111                         CollectionChangeEventArgs args = new CollectionChangeEventArgs(CollectionChangeAction.Remove, dataBinding);
 112                         OnCollectionChanging (args);
 113                         base.List.Remove(dataBinding);
 114                         OnCollectionChanged (args);
 115                 }
 116
 117                 protected internal bool ShouldSerializeMyAll() {
 118                         if (this.Count>0) {
 119                                 return(true);
 120                         } else {
 121                                 return(false);
 122                         }
 123                 }
 124                 #endregion      // Public Instance Methods
 125
 126                 internal bool Contains (Binding binding)
 127                 {
 128                         return List.Contains (binding);
 129                 }
 130
 131                 #region Events
 132                 public event CollectionChangeEventHandler       CollectionChanged;
 133                 public event CollectionChangeEventHandler       CollectionChanging;
 134                 #endregion      // Events
 135         }
 136 }