protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
_staticHeader = this.GetTemplateChild("StaticHeader") as PivotHeaderPanel;
_titleContentControl = this.GetTemplateChild("TitleContentControl") as ContentControl;
_header = this.GetTemplateChild("Header") as PivotHeaderPanel;
_headerClipperGeometry = this.GetTemplateChild("HeaderClipperGeometry") as RectangleGeometry;
_headerClipper = this.GetTemplateChild("HeaderClipper") as ContentControl;
_pivotItemTemplate = new DataTemplate(() => new PivotItem());
_isUWPTemplate = _staticHeader != null;
if (!_isUWPTemplate)
{
ItemsPanelRoot = null;
}
_isTemplateApplied = true;
UpdateProperties();
#if __WASM__ || __SKIA__
//TODO: Workaround for https://github.com/unoplatform/uno/issues/5144
//OnApplyTemplate() is comming too late when using bindings
SetNeedsUpdateItems();
#endif
SynchronizeItems();
}
protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
_staticHeader = this.GetTemplateChild("StaticHeader") as PivotHeaderPanel;
_titleContentControl = this.GetTemplateChild("TitleContentControl") as ContentControl;
_header = this.GetTemplateChild("Header") as PivotHeaderPanel;
_headerClipperGeometry = this.GetTemplateChild("HeaderClipperGeometry") as RectangleGeometry;
_headerClipper = this.GetTemplateChild("HeaderClipper") as ContentControl;
_pivotItemTemplate = new DataTemplate(() => new PivotItem());
_isUWPTemplate = _staticHeader != null;
if (!_isUWPTemplate)
{
ItemsPanelRoot = null;
}
_isTemplateApplied = true;
Loaded += (s, e) => RegisterHeaderEvents();
Unloaded += (s, e) => UnregisterHeaderEvents();
Items.VectorChanged += OnItemsVectorChanged;
UpdateProperties();
SynchronizeItems();
}
private static FrameworkElement GetPivotHeaderIndicator(PivotHeaderPanel panel, string Name, int Index)
{
if (panel == null)
{
return(null);
}
var container = panel.Children[Index] as FrameworkElement;
return(container?.VisualTreeFindName(Name));
}
protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
#if WINDOWS_PHONE_APP
this.PivotHeaderPanel = (PivotHeaderPanel)this.GetTemplateChild("Header");
#else
this.PivotHeaderPanel = (PivotHeaderPanel)this.GetTemplateChild("StaticHeader");
#endif
this.Loaded += (s, e) => UpdateHeaderItemsOpacity();
this.DataContextChanged += (s, e) => UpdateHeaderItemsOpacity();
this.SelectionChanged += (s, e) => UpdateHeaderItemsOpacity();
}
//private static void TryStartPivotHeaderAnimation(Pivot pivot, object NewItem, object OldItem)
//{
// if (NewItem == null) return;
// var NewIndex = -1;
// var OldIndex = -1;
// if (pivot.ContainerFromItem(OldItem) is PivotItem oldContainer)
// {
// OldIndex = pivot.IndexFromContainer(oldContainer);
// }
// if (pivot.ContainerFromItem(NewItem) is PivotItem newContainer)
// {
// NewIndex = pivot.IndexFromContainer(newContainer);
// }
// if (NewIndex >= 0)
// {
// var name = GetName(pivot);
// var Headers = pivot.VisualTreeFindAll<PivotHeaderPanel>();
// var Header = Headers.FirstOrDefault(c => c.Name == "Header");
// var StaticHeader = Headers.FirstOrDefault(c => c.Name == "StaticHeader");
// var newIndicator = GetPivotHeaderIndicator(Header, name, NewIndex);
// var newStaticIndicator = GetPivotHeaderIndicator(StaticHeader, name, NewIndex);
// if (OldIndex >= 0)
// {
// var oldIndicator = GetPivotHeaderIndicator(Header, name, OldIndex);
// var oldStaticIndicator = GetPivotHeaderIndicator(StaticHeader, name, OldIndex);
// if (Header != null && newIndicator != null && oldIndicator != null)
// {
// TryStartPivotHeaderAnimation(Header, newIndicator, oldIndicator, GetIsScaleEnabled(pivot));
// }
// if (StaticHeader != null && newStaticIndicator != null && oldStaticIndicator != null)
// {
// TryStartPivotHeaderAnimation(StaticHeader, newStaticIndicator, oldStaticIndicator, GetIsScaleEnabled(pivot));
// }
// }
// else
// {
// if (newIndicator != null)
// {
// newIndicator.Visibility = Visibility.Visible;
// }
// if (newStaticIndicator != null)
// {
// newStaticIndicator.Visibility = Visibility.Visible;
// }
// }
// }
//}
private static void TryStartPivotHeaderAnimation(PivotHeaderPanel panel, FrameworkElement NewIndicator, FrameworkElement OldIndicator, bool isScaleEnabled)
{
NewIndicator.Visibility = Visibility.Visible;
NewIndicator.UpdateLayout();
if (IsLoaded(NewIndicator))
{
TryStartAnimation(NewIndicator, OldIndicator, isScaleEnabled);
OldIndicator.Visibility = Visibility.Collapsed;
}
else
{
NewIndicator.Loaded += NewIndicatorLoaded;
}
void NewIndicatorLoaded(object sender, RoutedEventArgs args)
{
NewIndicator.Loaded -= NewIndicatorLoaded;
TryStartAnimation(NewIndicator, OldIndicator, isScaleEnabled);
NewIndicator.Visibility = Visibility.Visible;
OldIndicator.Visibility = Visibility.Collapsed;
}
}
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();
}
}
