class/WindowsBase/System.Windows/WeakEventManager.cs

   1 //
   2 // WeakEventManager.cs
   3 //
   4 // Author:
   5 //   Chris Toshok (toshok@ximian.com)
   6 //
   7 // (C) 2007 Novell, Inc.
   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.Collections;
  30 using System.Windows.Threading;
  31
  32 namespace System.Windows {
  33
  34         public abstract class WeakEventManager : DispatcherObject
  35         {
  36                 Hashtable sourceData;
  37
  38                 protected WeakEventManager ()
  39                 {
  40                         sourceData = new Hashtable ();
  41                 }
  42
  43                 protected IDisposable ReadLock {
  44                         get { throw new NotImplementedException (); }
  45                 }
  46
  47                 protected IDisposable WriteLock {
  48                         get { throw new NotImplementedException (); }
  49                 }
  50
  51                 protected object this [object source] {
  52                         get { return sourceData[source]; }
  53                         set { sourceData[source] = value; }
  54                 }
  55
  56                 protected void DeliverEvent (object sender, EventArgs args)
  57                 {
  58                         DeliverEventToList (sender, args, (ListenerList)this[sender]);
  59                 }
  60
  61                 protected void DeliverEventToList (object sender, EventArgs args, ListenerList list)
  62                 {
  63                         for (int i = 0; i < list.Count; i ++) {
  64                                 IWeakEventListener listener = list[i];
  65                                 listener.ReceiveWeakEvent (GetType(), sender, args);
  66                         }
  67                 }
  68
  69                 protected void ProtectedAddListener (object source, IWeakEventListener listener)
  70                 {
  71                         ListenerList list = sourceData[source] as ListenerList;
  72                         if (list != null)
  73                                 list.Add (listener);
  74                 }
  75
  76                 protected void ProtectedRemoveListener (object source, IWeakEventListener listener)
  77                 {
  78                         ListenerList list = sourceData[source] as ListenerList;
  79                         if (list != null)
  80                                 list.Remove (listener);
  81                 }
  82
  83                 protected virtual bool Purge (object source, object data, bool purgeAll)
  84                 {
  85                         throw new NotImplementedException ();
  86                 }
  87
  88                 protected void Remove (object source)
  89                 {
  90                         throw new NotImplementedException ();
  91                 }
  92
  93                 protected void ScheduleCleanup ()
  94                 {
  95                         throw new NotImplementedException ();
  96                 }
  97
  98                 protected abstract void StartListening (object source);
  99                 protected abstract void StopListening (object source);
 100
 101
 102                 protected static WeakEventManager GetCurrentManager (Type managerType)
 103                 {
 104                         throw new NotImplementedException ();
 105                 }
 106
 107                 protected static void SetCurrentManager (Type managerType, WeakEventManager manager)
 108                 {
 109                         throw new NotImplementedException ();
 110                 }
 111
 112
 113                 protected class ListenerList
 114                 {
 115                         public ListenerList ()
 116                         {
 117                                 throw new NotImplementedException ();
 118                         }
 119
 120                         public ListenerList (int capacity)
 121                         {
 122                                 throw new NotImplementedException ();
 123                         }
 124
 125                         public int Count {
 126                                 get { throw new NotImplementedException (); }
 127                         }
 128
 129                         public static ListenerList Empty {
 130                                 get { throw new NotImplementedException (); }
 131                         }
 132
 133                         public bool IsEmpty {
 134                                 get { throw new NotImplementedException (); }
 135                         }
 136
 137                         public IWeakEventListener this[int index] {
 138                                 get { throw new NotImplementedException (); }
 139                         }
 140
 141                         public void Add (IWeakEventListener listener)
 142                         {
 143                                 throw new NotImplementedException ();
 144                         }
 145
 146                         public bool BeginUse ()
 147                         {
 148                                 throw new NotImplementedException ();
 149                         }
 150
 151                         public WeakEventManager.ListenerList Clone ()
 152                         {
 153                                 throw new NotImplementedException ();
 154                         }
 155
 156                         public void EndUse ()
 157                         {
 158                                 throw new NotImplementedException ();
 159                         }
 160
 161                         public static bool PrepareForWriting (ref WeakEventManager.ListenerList list)
 162                         {
 163                                 throw new NotImplementedException ();
 164                         }
 165
 166                         public bool Purge ()
 167                         {
 168                                 throw new NotImplementedException ();
 169                         }
 170
 171                         public void Remove (IWeakEventListener listener)
 172                         {
 173                                 throw new NotImplementedException ();
 174                         }
 175                 }
 176         }
 177
 178 }