private bool HandledEvent(AsyncCollectionRequest <KeyValuePair <TKey, TValue> > request)
{
var changesMade = false;
if (request.EventType == AsyncCollectionEventType.Clear)
{
changesMade = true;
_trustedSource.Clear();
// ReSharper disable once ConditionIsAlwaysTrueOrFalse
return(changesMade);
}
switch (request.EventType)
{
case (AsyncCollectionEventType.Remove):
if (_trustedSource.ContainsKey((TKey)request.Data))
{
changesMade = true;
_trustedSource.Remove((TKey)request.Data);
}
break;
case (AsyncCollectionEventType.TryUpdate):
case (AsyncCollectionEventType.TryAdd):
{
var kvp = (KeyValuePair <TKey, TValue>)request.Data;
if (!_trustedSource.ContainsKey(kvp.Key))
{
if (AsyncCollectionEventType.TryAdd == request.EventType)
{
changesMade = true;
_trustedSource.Add(kvp.Key, kvp.Value);
}
}
else
{
changesMade = true;
if (request.TryFunc == null)
{
_trustedSource[kvp.Key] = kvp.Value;
}
else
{
var currentValue = _trustedSource[kvp.Key];
var selectedValue = request.TryFunc(new KeyValuePair <TKey, TValue>(kvp.Key, currentValue), kvp);
_trustedSource[kvp.Key] = selectedValue.Value;
}
}
}
break;
}
return(changesMade);
}
private bool HandledEvent(AsyncCollectionRequest <T> request)
{
var changesMade = false;
if (request.EventType == AsyncCollectionEventType.Clear)
{
changesMade = true;
_trustedSource.Clear();
// ReSharper disable once ConditionIsAlwaysTrueOrFalse
return(changesMade);
}
switch (request.EventType)
{
case (AsyncCollectionEventType.Remove):
if (request.Index >= 0 && _trustedSource.Count > request.Index)
{
changesMade = true;
_trustedSource.RemoveAt(request.Index);
}
else if (request.Data != null)
{
changesMade = true;
_trustedSource.Remove((T)request.Data);
}
break;
case (AsyncCollectionEventType.Add):
changesMade = true;
_trustedSource.Add((T)request.Data);
break;
case (AsyncCollectionEventType.TryUpdate):
if (request.Index >= 0 && _trustedSource.Count > request.Index)
{
changesMade = true;
_trustedSource[request.Index] = (T)request.Data;
}
break;
case (AsyncCollectionEventType.TryInsert):
if (request.Index >= 0 && _trustedSource.Count > request.Index)
{
changesMade = true;
_trustedSource.Insert(request.Index, (T)request.Data);
}
break;
}
return(changesMade);
}
