private static void OnIsShowingChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
////Debug.Print($"Visible changed to: {e.NewValue}");
var textBox = (TextBox)d;
if (Equals(e.NewValue, true))
{
var adorner = textBox.GetAdorner();
if (adorner == null)
{
adorner = new WatermarkAdorner(textBox);
textBox.SetAdorner(adorner);
var textStyle = textBox.GetTextStyle();
if (textStyle != null)
{
adorner.SetCurrentValue(WatermarkAdorner.TextStyleProperty, textStyle);
}
AdornerService.Show(adorner);
textBox.SetCurrentValue(AdornerProperty, adorner);
}
else
{
Debug.Assert(condition: false, message: "Already visible");
}
}
else
{
var adorner = textBox.GetAdorner();
if (adorner != null)
{
AdornerService.Remove(adorner);
textBox.ClearValue(AdornerProperty);
}
}
}
private static void SetAdorner(this DependencyObject element, WatermarkAdorner value)
{
element.SetValue(AdornerProperty, value);
}
