private static void OnIsDropDownOpenChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
GroupNavigationControl groupNavigationControl = ( GroupNavigationControl )sender;
if (( bool )e.NewValue)
{
// To avoid lag while generating the control, we do
// a late binding of the items.
if (groupNavigationControl.ItemsSource == null)
{
Group group = groupNavigationControl.DataContext as Group;
if (group != null)
{
groupNavigationControl.ItemsSource = group.SiblingGroups;
}
}
Mouse.Capture(groupNavigationControl, CaptureMode.SubTree);
}
else
{
groupNavigationControl.ItemsSource = null;
if (groupNavigationControl.IsKeyboardFocusWithin)
{
groupNavigationControl.Focus();
}
if (Mouse.Captured == groupNavigationControl)
{
Mouse.Capture(null);
}
}
}
private static void OnMouseButtonDown(object sender, MouseButtonEventArgs e)
{
GroupNavigationControl groupNavigationControl = ( GroupNavigationControl )sender;
if (!groupNavigationControl.IsKeyboardFocusWithin)
{
groupNavigationControl.Focus();
}
e.Handled = true;
if ((Mouse.Captured == groupNavigationControl) && (e.OriginalSource == groupNavigationControl))
{
groupNavigationControl.Close();
}
}