/// <summary>
/// Provides a value for UIAutomation's SizeOfSet property
/// Reads <see cref="AutomationProperties.SizeOfSetProperty"/> and returns the value if one was provided,
/// otherwise it attempts to calculate one.
/// </summary>
override protected int GetSizeOfSetCore()
{
int sizeOfSet = AutomationProperties.GetSizeOfSet(_owner);
if (sizeOfSet == AutomationProperties.AutomationSizeOfSetDefault)
{
// If a value has been set for <see cref="UIElement.PositionAndSizeOfSetController"/>
// forward the call to that element, otherwise return the default value.
UIElement element = _owner.PositionAndSizeOfSetController;
if (element != null)
{
AutomationPeer peer = UIElementAutomationPeer.FromElement(element);
peer = peer.EventsSource ?? peer;
if (peer != null)
{
try
{
sizeOfSet = peer.GetSizeOfSet();
}
catch (ElementNotAvailableException)
{
sizeOfSet = AutomationProperties.AutomationSizeOfSetDefault;
}
}
}
}
return(sizeOfSet);
}
/// <summary>
/// Provides a value for UIAutomation's SizeOfSet property
/// Reads <see cref="AutomationProperties.SizeOfSetProperty"/> and returns the value.
/// </summary>
override protected int GetSizeOfSetCore()
{
return(AutomationProperties.GetSizeOfSet(_owner));
}