/// <summary>
/// Called by the <see cref="EventQueue"/> when the underlying collection has changed.
/// </summary>
protected virtual void HandlePropertyChanged(object sender, PropertyEventArgs args_)
{
PropertyCollectionEventArgs args = args_ as PropertyCollectionEventArgs;
if ((args == null) || (args.Removed == null && args.Added == null))
{
// Behave as if each member were added in sequence.
using (Synchronizer.Lock(this.m_Owner.SyncRoot)) {
int index = 0;
foreach (object member in this.Collection)
{
this.m_HandlePropertyChangedDispatch.Dispatcher(sender,
new PropertyCollectionEventArgs(this.Property, index++, null, member));
}
}
}
else
{
if (args.Removed != null)
{
this.TearDownMember(args.Index, args.Removed, this.m_TagTable[args.Removed]);
this.m_TagTable.Remove(args.Removed);
}
if (args.Added != null)
{
this.m_TagTable[args.Added]
= this.SetUpMember(args.Index, args.Added);
}
}
}
/// <summary>
/// Called by the <see cref="EventQueue"/> when the underlying collection is about to change.
/// </summary>
protected virtual void HandlePropertyChanging(object sender, PropertyEventArgs args_)
{
PropertyCollectionEventArgs args = args_ as PropertyCollectionEventArgs;
if ((args == null) || (args.Removed == null && args.Added == null))
{
// Behave as if each member were removed from the collection.
using (Synchronizer.Lock(this.m_Owner.SyncRoot)) {
foreach (object member in this.Collection)
{
this.m_HandlePropertyChangedDispatch.Dispatcher(sender,
new PropertyCollectionEventArgs(this.Property, -1, member, null));
}
}
}
}
