protected override void OnItemsChanged(NotifyCollectionChangedEventArgs e)
{
base.OnItemsChanged(e);
if (e.Action == NotifyCollectionChangedAction.Add && SelectNewTabOnCreate)
{
TabItem tabItem = (TabItem)this.ItemContainerGenerator.ContainerFromItem(e.NewItems[e.NewItems.Count - 1]);
SelectedItem = tabItem;
TabPanel itemsHost = Helper.FindVirtualizingTabPanel(this);
if (itemsHost != null)
{
itemsHost.MakeVisible(tabItem, Rect.Empty);
}
tabItem.Focus();
}
}
protected override void OnPreviewKeyDown(KeyEventArgs e)
{
var tabsCount = GetTabsCount();
if (tabsCount == 0)
{
return;
}
TabItem ti = null;
switch (e.Key)
{
case Key.Home:
ti = GetTabItem(0);
break;
case Key.End:
ti = GetTabItem(tabsCount - 1);
break;
case Key.Tab:
if (e.KeyboardDevice.Modifiers == ModifierKeys.Control)
{
var index = SelectedIndex;
var direction = e.KeyboardDevice.Modifiers == ModifierKeys.Shift ? -1 : 1;
while (true)
{
index += direction;
if (index < 0)
{
index = tabsCount - 1;
}
else if (index > tabsCount - 1)
{
index = 0;
}
FrameworkElement ui = GetTabItem(index);
if (ui != null)
{
if (ui.Visibility == Visibility.Visible && ui.IsEnabled)
{
ti = GetTabItem(index);
break;
}
}
}
}
break;
}
TabPanel panel = Helper.FindVirtualizingTabPanel(this);
if (panel != null && ti != null)
{
panel.MakeVisible(ti, Rect.Empty);
SelectedItem = ti;
e.Handled = ti.Focus();
}
base.OnPreviewKeyDown(e);
}
