private void IdentityCollection_CollectionChangeAdded(object sender, IdentityCollectionAddEventArgs <T> e)
{
List <T> list = new List <T>(e.AddedItems);
IdentityCollectionAddEventArgs <T> args =
new IdentityCollectionAddEventArgs <T>(list);
CollectionChangeAdded?.Invoke(this, args);
}
/// <summary>
/// Adds given item to collection, if collection does not contain this item.
/// </summary>
/// <param name="item">Item to add to collection.</param>
public void AddItem(T item)
{
List <T> list = new List <T>();
if (Add(item))
{
list.Add(item);
IdentityCollectionAddEventArgs <T> args =
new IdentityCollectionAddEventArgs <T>(list);
CollectionChangeAdded?.Invoke(this, args);
}
}
public void AddRange(IEnumerable <T> items)
{
List <T> added = new List <T>();
foreach (T item in items)
{
if (Add(item, false))
{
added.Add(item);
}
}
if (added.Count > 0)
{
SelectionCollectionAddEventArgs <T> args =
new SelectionCollectionAddEventArgs <T>(added);
CollectionChangeAdded?.Invoke(this, args);
}
}
private bool Add(T item, bool sendEvent)
{
if (!allItems.Any(x => x.Id.Equals(item.Id)))
{
allItems.Add(item);
if (sendEvent)
{
SelectionCollectionAddEventArgs <T> args =
new SelectionCollectionAddEventArgs <T>(new List <T>()
{
item
});
CollectionChangeAdded?.Invoke(this, args);
}
return(true);
}
return(false);
}
/// <summary>
/// Adds given items to collection, if collection does not contain these items.
/// </summary>
/// <param name="items">Items to add to collection.</param>
public void AddRange(IEnumerable <T> items)
{
List <T> list = new List <T>();
foreach (T item in items)
{
if (Add(item))
{
list.Add(item);
}
}
if (list.Count > 0)
{
IdentityCollectionAddEventArgs <T> args =
new IdentityCollectionAddEventArgs <T>(list);
CollectionChangeAdded?.Invoke(this, args);
}
}
private void Add(IEnumerable <T> targetItems)
{
List <ISelectionItem <T> > added = new List <ISelectionItem <T> >();
foreach (T item in targetItems)
{
if (!allItems.Any(x => x.Target.Identifier.Id.Equals(item.Identifier.Id)))
{
ISelectionItem <T> selectionItem = new SelectionItem <T>(item);
allItems.Add(selectionItem);
added.Add(selectionItem);
}
}
if (added.Count > 0)
{
SelectionCollectionAddEventArgs <T> args =
new SelectionCollectionAddEventArgs <T>(added);
CollectionChangeAdded?.Invoke(this, args);
}
}