/// <summary>
/// Event Handler for a center button tap, calling user-registered events and handling navigation (if enabled)
/// </summary>
/// <param name="s">Sending object</param>
/// <param name="e">Event information</param>
private void OnCenterButtonTapped(object s, TappedRoutedEventArgs e)
{
// If an event has been registered with the center button tap, call it
CenterButtonTapped?.Invoke(this, e);
if (PreviousPies.Count == 0)
{
TogglePie();
}
if (PreviousPies.Count <= 0 || !IsCenterButtonNavigationEnabled)
{
return;
}
// a custom menu may have changed dragability. Ensure we are draggable, of using Floating
var floatingParent = FindParent <Floating>(this);
if (floatingParent != null)
{
floatingParent.ShouldManipulateChild = true;
}
// If we have a previous pie, we're going back to it
ChangePie(this, PreviousPies[PreviousPies.Count - 1], false);
PreviousPies.RemoveAt(PreviousPies.Count - 1);
// We don't necessarily have the same amount of pies and center buttons.
// Users can create submenues that don't bring their own center button
if (PreviousButtons.Count <= 0)
{
return;
}
ChangeCenterButton(this, PreviousButtons.Pop(), false);
}
/// <summary>
/// Clears the current pie, removing all currently displayed slices.
/// </summary>
/// <param name="storePrevious">Should we store the pie (for back navigation)?</param>
private void _clearPie(bool storePrevious)
{
// Store the current pie
if (storePrevious)
{
var backupPie = new Pie();
foreach (var rmb in Pie.Slices)
{
backupPie.Slices.Add(rmb);
}
backupPie.SelectedItem = Pie.SelectedItem;
PreviousPies.Add(backupPie);
}
// Delete the current slices
Pie.Slices.Clear();
CustomRadialControlRoot.Children.Clear();
}