private IDictionary <long, T> ToMutableDictionary <T>(ImmutableSortedList <long, T> immutableSortedList)
{
if (null == immutableSortedList)
{
return(new Dictionary <long, T>());
}
return(new Dictionary <long, T>(immutableSortedList.AsDictionary()));
}
public virtual void Update(WorkspaceChangeArgs workspaceChange)
{
if (null == _entityList)
{
return;
}
var newData = GetData(Workspace.Data) ?? ImmutableSortedList <TKey, TData> .EMPTY;
var newKeys = new HashSet <TKey>(newData.Keys);
bool changed = !Equals(newData.Keys, _entityList.Keys);
if (changed)
{
var entities = new Dictionary <TKey, TEntity>(_entityList.AsDictionary());
foreach (var key in newKeys)
{
TEntity entity;
if (!entities.TryGetValue(key, out entity))
{
TData itemData;
newData.TryGetValue(key, out itemData);
entities.Add(key, CreateEntityForKey(key, itemData));
}
}
_entityList = ImmutableSortedList.FromValues(entities, _entityList.KeyComparer);
}
foreach (var entity in _entityList.Values)
{
TData itemData;
var key = GetKey(entity);
newData.TryGetValue(key, out itemData);
entity.Update(workspaceChange, itemData);
}
if (changed)
{
var listChanged = ListChanged;
if (listChanged != null)
{
listChanged(this, new ListChangedEventArgs(ListChangedType.Reset, -1));
}
}
}
