private void SynchronizeItems()
{
if (_isUWPTemplate)
{
_staticHeader.Visibility = Items.Count != 0 ? Visibility.Visible : Visibility.Collapsed;
UnregisterHeaderEvents();
_staticHeader.Children.Clear();
foreach (var item in Items)
{
var headerItem = new PivotHeaderItem()
{
ContentTemplate = HeaderTemplate,
IsHitTestVisible = true
};
if (item is PivotItem pivotItem)
{
headerItem.Content = pivotItem.Header;
}
else
{
headerItem.Content = item;
}
headerItem.SetBinding(
ContentControl.ContentTemplateProperty,
new Binding
{
Path = "HeaderTemplate",
RelativeSource = RelativeSource.TemplatedParent
}
);
_staticHeader.Children.Add(headerItem);
}
if (SelectedIndex == -1 && Items.Count != 0)
{
SelectedIndex = 0;
}
else
{
SynchronizeSelectedItem();
}
RegisterHeaderEvents();
}
else
{
if (TemplatedRoot is NativePivotPresenter presenter)
{
presenter.Items.Clear();
presenter.Items.AddRange(Items);
}
}
}
private void UpdateVisualStates(PivotHeaderItem headerItem)
{
if (!_isUWPTemplate)
{
return;
}
if (!headerItem.IsEnabled)
{
VisualStateManager.GoToState(headerItem, PivotHeaderItemSelectionStates.Disabled, true);
return;
}
var isSelected = SelectedIndex == _staticHeader.Children.IndexOf(headerItem);
var state = (isSelected, headerItem.IsPointerOver, headerItem.IsPointerPressed) switch
{
(true, true, _) => PivotHeaderItemSelectionStates.SelectedPointerOver,
(true, _, true) => PivotHeaderItemSelectionStates.SelectedPressed,
(true, _, _) => PivotHeaderItemSelectionStates.Selected,
(false, true, _) => PivotHeaderItemSelectionStates.UnselectedPointerOver,
(false, _, true) => PivotHeaderItemSelectionStates.UnselectedPressed,
(false, _, _) => PivotHeaderItemSelectionStates.Unselected,
};
private static async void ClosePiovt(FrameworkElement sources)
{
try
{
PivotHeaderItem item = sources.GetParentControl <PivotHeaderItem>();
PivotHeaderPanel panel = sources.GetParentControl <PivotHeaderPanel>();
for (int i = 0; i < panel.Children.Count; i++)
{
var child = panel.Children[i];
if (child == item)
{
PivotViewModel pivot = sources.GetParentControl <Pivot>().DataContext as PivotViewModel;
pivot.RemoveAt(i);
return;
}
}
}
catch (Exception ex)
{
MessageDialog messageDialog = new MessageDialog(ex.Message);
await messageDialog.ShowAsync();
}
}
