// listen for changes to a property
internal void RegisterForChanges(object item, PropertyDescriptor pd, DataBindEngine engine)
{
// lazy creation of the cache
if (_table == null)
{
_table = new HybridDictionary();
}
ValueTableKey key = new ValueTableKey(item, pd);
object value = _table[key];
if (value == null)
{
// new entry needed - add a listener
INotifyPropertyChanged inpc = item as INotifyPropertyChanged;
if (inpc != null)
{
PropertyChangedEventManager.AddHandler(inpc, OnPropertyChanged, pd.Name);
}
else
{
ValueChangedEventManager.AddHandler(item, OnValueChanged, pd);
}
}
}
// Token: 0x06008DF6 RID: 36342 RVA: 0x0025AC58 File Offset: 0x00258E58
public ValueChangedRecord(ValueChangedEventManager manager, object source, PropertyDescriptor pd)
{
this._manager = manager;
this._source = source;
this._pd = pd;
this._eventArgs = new ValueChangedEventArgs(pd);
pd.AddValueChanged(source, new EventHandler(this.OnValueChanged));
}
public ValueChangedRecord(ValueChangedEventManager manager, object source, PropertyDescriptor pd)
{
// keep a strong reference to the source. Normally we avoid this, but
// it's OK here since its scope is exactly the same as the strong reference
// held by the PD: begins with pd.AddValueChanged, ends with
// pd.RemoveValueChanged. This ensures that we _can_ call RemoveValueChanged
// even in cases where the source implements value-semantics (which
// confuses the PD - see 795205).
_manager = manager;
_source = source;
_pd = pd;
_eventArgs = new ValueChangedEventArgs(pd);
pd.AddValueChanged(source, new EventHandler(OnValueChanged));
}
public ValueChangedRecord(ValueChangedEventManager manager, object source, PropertyDescriptor pd)
{
// keep a strong reference to the source. Normally we avoid this, but
// it's OK here since its scope is exactly the same as the strong reference
// held by the PD: begins with pd.AddValueChanged, ends with
// pd.RemoveValueChanged. This ensures that we _can_ call RemoveValueChanged
// even in cases where the source implements value-semantics (which
// confuses the PD - see 795205).
_manager = manager;
_source = source;
_pd = pd;
_eventArgs = new ValueChangedEventArgs(pd);
pd.AddValueChanged(source, new EventHandler(OnValueChanged));
}
