/// <summary>
/// Main flow of the render pipeline.
/// </summary>
/// <param name="sc"></param>
/// <param name="ist"></param>
/// <param name="recycler"></param>
void ElementPipeline(SelectorContext sc, ItemState ist, Recycler <FrameworkElement, ItemState> recycler)
{
sc.SetTick(ist.index);
var createit = true;
if (LabelSelector != null)
{
var ox = LabelSelector.Convert(sc, typeof(bool), null, System.Globalization.CultureInfo.CurrentUICulture.Name);
if (ox is bool bx)
{
createit = bx;
}
else
{
createit = ox != null;
}
}
if (!createit)
{
return;
}
var current = recycler.Next(ist);
if (current == null)
{
return;
}
if (!current.Item1)
{
// recycled: restore binding if we are using a LabelFormatter
if (LabelFormatter != null && LabelStyle != null)
{
BindTo(this, nameof(LabelStyle), current.Item2, FrameworkElement.StyleProperty);
}
}
// default text
var text = ist.label == null
? String.Empty
: (String.IsNullOrEmpty(LabelFormatString)
? ist.label.ToString()
: String.Format(LabelFormatString, ist.label)
);
if (LabelFormatter != null)
{
// call for Style, String override
var format = LabelFormatter.Convert(sc, typeof(Tuple <Style, String>), null, System.Globalization.CultureInfo.CurrentUICulture.Name);
if (format is Tuple <Style, String> ovx)
{
if (ovx.Item1 != null)
{
current.Item2.Style = ovx.Item1;
}
if (ovx.Item2 != null)
{
text = ovx.Item2;
}
}
}
// back-fill values
var shim = new TextShim()
{
Text = text
};
current.Item2.DataContext = shim;
BindTo(shim, nameof(Visibility), current.Item2, UIElement.VisibilityProperty);
ist.element = current.Item2;
sc.Generated(ist);
}
