private void UpdateVisualStateForNavigationViewPositionChange()
{
var position = Position;
var stateName = NavigationViewItemHelper.c_OnLeftNavigation;
bool handled = false;
switch (position)
{
case NavigationViewRepeaterPosition.LeftNav:
case NavigationViewRepeaterPosition.LeftFooter:
if (SharedHelpers.IsRS4OrHigher() && Application.Current.FocusVisualKind == FocusVisualKind.Reveal)
{
// OnLeftNavigationReveal is introduced in RS6 and only in the V1 style.
// Fallback to OnLeftNavigation for other styles.
if (VisualStateManager.GoToState(this, NavigationViewItemHelper.c_OnLeftNavigationReveal, false /*useTransitions*/))
{
handled = true;
}
}
break;
case NavigationViewRepeaterPosition.TopPrimary:
case NavigationViewRepeaterPosition.TopFooter:
stateName = NavigationViewItemHelper.c_OnTopNavigationPrimary;
if (SharedHelpers.IsRS4OrHigher() && Application.Current.FocusVisualKind == FocusVisualKind.Reveal)
{
// OnTopNavigationPrimaryReveal is introduced in RS6 and only in the V1 style.
// Fallback to c_OnTopNavigationPrimary for other styles.
if (VisualStateManager.GoToState(this, NavigationViewItemHelper.c_OnTopNavigationPrimaryReveal, false /*useTransitions*/))
{
handled = true;
}
}
break;
case NavigationViewRepeaterPosition.TopOverflow:
stateName = NavigationViewItemHelper.c_OnTopNavigationOverflow;
break;
}
if (!handled)
{
VisualStateManager.GoToState(this, stateName, false /*useTransitions*/);
}
}
void UpdateVisualStateForNavigationViewListPositionChange()
{
var position = Position();
var stateName = NavigationViewItemHelper.c_OnLeftNavigation;
bool handled = false;
if (position == NavigationViewListPosition.LeftNav)
{
#if !IS_UNO
if (SharedHelpers.IsRS4OrHigher() && Application.Current.FocusVisualKind == FocusVisualKind.Reveal)
{
// OnLeftNavigationReveal is introduced in RS6.
// Will fallback to stateName for the customer who re-template rs5 NavigationViewItem
if (VisualStateManager.GoToState(this, NavigationViewItemHelper.c_OnLeftNavigationReveal, false /*useTransitions*/))
{
handled = true;
}
}
#endif
}
else if (position == NavigationViewListPosition.TopPrimary)
{
#if !IS_UNO
if (SharedHelpers.IsRS4OrHigher() && Application.Current.FocusVisualKind == FocusVisualKind.Reveal)
{
stateName = NavigationViewItemHelper.c_OnTopNavigationPrimaryReveal;
}
else
#endif
{
stateName = NavigationViewItemHelper.c_OnTopNavigationPrimary;
}
}
else if (position == NavigationViewListPosition.TopOverflow)
{
stateName = NavigationViewItemHelper.c_OnTopNavigationOverflow;
}
if (!handled)
{
VisualStateManager.GoToState(this, stateName, false /*useTransitions*/);
}
}