private void UnmonitorExtendElement(object element)
{
if (element != null)
{
MeasureElement extend = element as MeasureElement;
if (extend != null)
{
extend.NeedMeasure -= new EventHandler(OnNeedMeasure);
LogicalChildRemove(extend);
}
}
}
private void MonitorExtendElement(object element)
{
if (element != null)
{
MeasureElement extend = element as MeasureElement;
if (extend != null)
{
LogicalChildAdd(extend);
extend.NeedMeasure += new EventHandler(OnNeedMeasure);
}
}
}
/// <summary>
/// Invoked when a property change requires a measure to occur.
/// </summary>
/// <param name="d">Owning object.</param>
/// <param name="e">Details of property that has changed.</param>
protected static void OnNeedMeasureOnChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
MeasureElement sender = (MeasureElement)d;
sender.OnNeedMeasure(sender, EventArgs.Empty);
}