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reworking

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This commit is contained in:
neuecc 2024-08-20 19:06:57 +09:00
parent 998f74c18d
commit ffa8a97e35
2 changed files with 43 additions and 52 deletions
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3
src/ObservableCollections/IObservableCollection.cs
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@ -37,6 +37,9 @@ namespace ObservableCollections
object SyncRoot { get; }
ISynchronizedViewFilter<T, TView> CurrentFilter { get; }
// TODO: add
event Action<SynchronizedViewChangedEventArgs<T,TView>>? ViewChanged;
// TODO: remove
event NotifyCollectionChangedEventHandler<T>? RoutingCollectionChanged;
event Action<NotifyCollectionChangedAction>? CollectionStateChanged;

92
src/ObservableCollections/Internal/NotifyCollectionChangedSynchronizedView.cs
View File

@ -12,75 +12,62 @@ namespace ObservableCollections.Internal
{
readonly ISynchronizedView<T, TView> parent;
readonly List<TView> listView;
readonly Func<T, TView> selector;
public SynchronizedViewList(ISynchronizedView<T, TView> parent, Func<T, TView> selector)
public SynchronizedViewList(ISynchronizedView<T, TView> parent)
{
this.parent = parent;
this.selector = selector;
parent.RoutingCollectionChanged += Parent_RoutingCollectionChanged; // TODO: -=
// TODO:add
parent.ViewChanged += Parent_ViewChanged;
}
private void Parent_RoutingCollectionChanged(in NotifyCollectionChangedEventArgs<T> e)
private void Parent_ViewChanged(SynchronizedViewChangedEventArgs<T, TView> e)
{
// call in parent.lock.
// event is called inside lock(parent.SyncRoot)
// TODO: invoke in ICollectionEventDispatcher?
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
if (e.IsSingleItem)
case NotifyCollectionChangedAction.Add: // Add or Insert
if (e.NewViewIndex == -1)
{
// parent.CurrentFilter.IsMatch(
var item = selector(e.NewItem);
if (e.NewStartingIndex != -1)
{
listView.Insert(e.NewStartingIndex, selector(e.NewItem));
}
else // dict is -1
{
listView.Add(selector(e.NewItem));
}
listView.Add(e.NewView);
}
else
{
if (e.NewStartingIndex != -1)
{
var array = ArrayPool<TView>.Shared.Rent(e.NewItems.Length);
try
{
var i = 0;
foreach (var item in e.NewItems)
{
array[i++] = selector(item);
}
listView.InsertRange(e.NewStartingIndex, array.Take(e.NewItems.Length));
}
finally
{
ArrayPool<TView>.Shared.Return(array, true);
}
}
else
{
foreach (var item in e.NewItems)
{
listView.Add(selector(item));
}
}
listView.Insert(e.NewViewIndex, e.NewView);
}
break;
case NotifyCollectionChangedAction.Remove:
case NotifyCollectionChangedAction.Remove: // Remove
if (e.OldViewIndex == -1) // can't gurantee correct remove if index is not provided
{
listView.Remove(e.OldView);
}
else
{
listView.RemoveAt(e.OldViewIndex);
}
break;
case NotifyCollectionChangedAction.Replace:
case NotifyCollectionChangedAction.Replace: // Indexer
if (e.NewViewIndex == -1)
{
}
else
{
listView[e.NewViewIndex] = e.NewView;
}
break;
case NotifyCollectionChangedAction.Move:
case NotifyCollectionChangedAction.Move: //Remove and Insert
if (e.NewViewIndex == -1)
{
}
else
{
listView.RemoveAt(e.OldViewIndex);
listView.Insert(e.NewViewIndex, e.NewView);
}
break;
case NotifyCollectionChangedAction.Reset:
case NotifyCollectionChangedAction.Reset: // Clear
break;
default:
break;
@ -89,6 +76,7 @@ namespace ObservableCollections.Internal
// throw new NotImplementedException();
}
public TView this[int index] => throw new NotImplementedException();
public int Count => throw new NotImplementedException();