protected override LazyScreen <TScreen, TMetadata> EnsureItem(LazyScreen <TScreen, TMetadata> newItem)
{
var node = newItem as IChild;
if (node != null && node.Parent != this)
{
node.Parent = this;
}
return(newItem);
}
private void CloseItemCore(LazyScreen <TScreen, TMetadata> item)
{
if (item.Equals(ActiveItem))
{
var next = DetermineNextItemToActivate(item);
ChangeActiveItem(next, true);
}
else
{
ScreenExtensions.TryDeactivate(item, true);
}
item.Reset();
}
public override void DeactivateItem(LazyScreen <TScreen, TMetadata> item, bool close)
{
if (item == null)
{
return;
}
if (close)
{
CloseStrategy.Execute(new[] { item }, (canClose, closable) =>
{
if (canClose)
{
CloseItemCore(item);
}
});
}
else
{
ScreenExtensions.TryDeactivate(item, false);
}
}
protected LazyScreen <TScreen, TMetadata> DetermineNextItemToActivate(LazyScreen <TScreen, TMetadata> currentItem)
{
var next = Items.FirstOrDefault(x => x != currentItem && x.IsScreenCreated);
return(next);
}