public BaseTreeItem(string title, IFlatListItem parent)
{
if (parent == null)
{
throw new ArgumentNullException("parent");
}
Title = title;
AttachTo(parent);
}
private static void AddItemsTo(BindableCollection <Node> newParentCollection, IFlatListItem insertPlace, IEnumerable <Node> items)
{
var newItems = new List <Node>();
var position = newParentCollection.IndexOf(insertPlace as Node);
if (position != -1)
{
newItems.AddRange(newParentCollection.Take(position));
newItems.AddRange(items);
newItems.AddRange(newParentCollection.Skip(position));
}
else
{
newItems.AddRange(newParentCollection);
newItems.AddRange(items);
}
newParentCollection.IsNotifying = false;
newParentCollection.Clear();
newParentCollection.AddRange(newItems);
newParentCollection.IsNotifying = true;
newParentCollection.Refresh();
}
public CompositeViewModel(string title, IFlatListItem parent)
: base(title, parent)
{
SubItems.CollectionChanged += CollectionChangedHandler;
}
public void AttachTo(IFlatListItem parent)
{
Parent = parent;
LeftMargin = parent == null ? 0 : parent.SizeWidth;
}
public LeafViewModel(string title, IFlatListItem parent)
: base(title, parent)
{
}