/// <summary>
/// OnMinMaxChanged callback responds to any of the Min/Max dependency properties changing
/// </summary>
/// <param name="d"></param>
/// <param name="e"></param>
private static void OnMinMaxChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TabControl tc = (TabControl)d;
if (tc.Template == null)
{
return;
}
foreach (TabItem child in tc.InternalChildren())
{
if (child != null)
{
child.Dimension = null;
}
}
TabPanel tp = Helper.FindVirtualizingTabPanel(tc);
if (tp != null)
{
tp.InvalidateMeasure();
}
}
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);
}