private static void IsPopupOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
NavigationPaneExpander expander = (NavigationPaneExpander)d;
bool newValue = (bool)e.NewValue;
bool oldValue = !newValue;
// todo: implement automation
//ComboBoxAutomationPeer peer = UIElementAutomationPeer.FromElement(element) as ComboBoxAutomationPeer;
//if (peer != null)
//{
// peer.RaiseExpandCollapseAutomationEvent(oldValue, newValue);
//}
if (newValue)
{
if (expander.part_popup != null)
{
expander.popupResizer = new PopupResizer(expander.part_popup, expander.part_contentHost, expander.PopupResizePreviewStyle);
}
expander.OnPopupOpened();
}
else
{
expander.OnPopupClosed();
if (expander.popupResizer != null)
{
expander.popupResizer.Dispose();
}
expander.popupResizer = null;
}
}
private void SwitchContentToPopUp(bool minimized)
{
//Application.Current.Dispatcher.BeginInvoke((SetMinimized)((e, m) =>
//{
NavigationPaneExpander e = this;
bool m = minimized;
Border expanded = e.part_contentHostContainerExpanded;
Border unexpanded = e.part_contentHostContainerUnexpanded;
ItemsPresenter presenter = e.part_contentHost;
if (expanded != null && unexpanded != null && presenter != null)
{
if (m)
{
expanded.Child = null;
unexpanded.Child = presenter;
//unexpanded.InvalidateVisual();
}
else
{
unexpanded.Child = null;
expanded.Child = presenter;
}
}
//}), DispatcherPriority.Render, this, minimized);
}
private static object CoerceExpandedWidth(DependencyObject d, object value)
{
NavigationPaneExpander expander = d as NavigationPaneExpander;
if (expander.IsMinimized)
{
return(expander.widthDelta + expander.part_contentHost.ActualWidth);
}
else
{
return(expander.ActualWidth);
}
}
private static object CoerceIsPopupOpen(DependencyObject d, object value)
{
NavigationPaneExpander p = d as NavigationPaneExpander;
return(p.IsMinimized ? value : false);
}