// Token: 0x06007712 RID: 30482 RVA: 0x002205B8 File Offset: 0x0021E7B8
private void AddListener(object source, PropertyDescriptor pd, IWeakEventListener listener, EventHandler <ValueChangedEventArgs> handler)
{
using (base.WriteLock)
{
HybridDictionary hybridDictionary = (HybridDictionary) base[source];
if (hybridDictionary == null)
{
hybridDictionary = new HybridDictionary();
base[source] = hybridDictionary;
}
ValueChangedEventManager.ValueChangedRecord valueChangedRecord = (ValueChangedEventManager.ValueChangedRecord)hybridDictionary[pd];
if (valueChangedRecord == null)
{
valueChangedRecord = new ValueChangedEventManager.ValueChangedRecord(this, source, pd);
hybridDictionary[pd] = valueChangedRecord;
}
valueChangedRecord.Add(listener, handler);
base.ScheduleCleanup();
}
}
// Token: 0x06007713 RID: 30483 RVA: 0x00220638 File Offset: 0x0021E838
private void RemoveListener(object source, PropertyDescriptor pd, IWeakEventListener listener, EventHandler <ValueChangedEventArgs> handler)
{
using (base.WriteLock)
{
HybridDictionary hybridDictionary = (HybridDictionary) base[source];
if (hybridDictionary != null)
{
ValueChangedEventManager.ValueChangedRecord valueChangedRecord = (ValueChangedEventManager.ValueChangedRecord)hybridDictionary[pd];
if (valueChangedRecord != null)
{
valueChangedRecord.Remove(listener, handler);
if (valueChangedRecord.IsEmpty)
{
hybridDictionary.Remove(pd);
}
}
if (hybridDictionary.Count == 0)
{
base.Remove(source);
}
}
}
}
// Token: 0x0600770C RID: 30476 RVA: 0x002203C0 File Offset: 0x0021E5C0
protected override bool Purge(object source, object data, bool purgeAll)
{
bool result = false;
HybridDictionary hybridDictionary = (HybridDictionary)data;
if (!BaseAppContextSwitches.EnableWeakEventMemoryImprovements)
{
ICollection keys = hybridDictionary.Keys;
PropertyDescriptor[] array = new PropertyDescriptor[keys.Count];
keys.CopyTo(array, 0);
for (int i = array.Length - 1; i >= 0; i--)
{
bool flag = purgeAll || source == null;
ValueChangedEventManager.ValueChangedRecord valueChangedRecord = (ValueChangedEventManager.ValueChangedRecord)hybridDictionary[array[i]];
if (!flag)
{
if (valueChangedRecord.Purge())
{
result = true;
}
flag = valueChangedRecord.IsEmpty;
}
if (flag)
{
valueChangedRecord.StopListening();
if (!purgeAll)
{
hybridDictionary.Remove(array[i]);
}
}
}
}
else
{
IDictionaryEnumerator enumerator = hybridDictionary.GetEnumerator();
while (enumerator.MoveNext())
{
bool flag2 = purgeAll || source == null;
ValueChangedEventManager.ValueChangedRecord valueChangedRecord2 = (ValueChangedEventManager.ValueChangedRecord)enumerator.Value;
if (!flag2)
{
if (valueChangedRecord2.Purge())
{
result = true;
}
flag2 = valueChangedRecord2.IsEmpty;
}
if (flag2)
{
valueChangedRecord2.StopListening();
if (!purgeAll)
{
this._toRemove.Add((PropertyDescriptor)enumerator.Key);
}
}
}
if (this._toRemove.Count > 0)
{
foreach (PropertyDescriptor key in this._toRemove)
{
hybridDictionary.Remove(key);
}
this._toRemove.Clear();
this._toRemove.TrimExcess();
}
}
if (hybridDictionary.Count == 0)
{
result = true;
if (source != null)
{
base.Remove(source);
}
}
return(result);
}
