private static void OnIsExpandedChanged(object sender, DependencyPropertyChangedEventArgs e)
{
LoopingSelector picker = (LoopingSelector)sender;
if (picker.IsExpanded)
{
picker.Balance();
}
else
{
picker.SelectAndSnapToClosest();
}
picker.UpdateItemState();
if (picker._state == State.Normal || picker._state == State.Expanded)
{
picker._state = picker.IsExpanded ? State.Expanded : State.Normal;
}
picker._actualIsExpanded = picker.IsExpanded;
var listeners = picker.IsExpandedChanged;
if (listeners != null)
{
listeners(picker, e);
}
}
private static void OnDataSourceChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
LoopingSelector picker = (LoopingSelector)obj;
if (e.OldValue != null)
{
((ILoopingSelectorDataSource)e.OldValue).SelectionChanged -= picker.OnDataSourceSelectionChanged;
}
if (e.NewValue != null)
{
((ILoopingSelectorDataSource)e.NewValue).SelectionChanged += picker.OnDataSourceSelectionChanged;
}
picker.UpdateData();
}
private static void OnItemTemplateChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
LoopingSelector picker = (LoopingSelector)obj;
picker.UpdateItemTemplates();
}