/// <summary>
/// Pushes the element on the stack. If an opposing element exists, remove this element;
/// TODO: Optimize it by using an Array (no resizing etc.)
/// </summary>
/// <param name="element">Element that should be pushed back</param>
public void Push(Element element)
{
Element opposingElement = elements.Find((Element otherElement) =>
{
return element.OpposingElementName == otherElement.ElementType; //Find opposing Element
});
if (opposingElement != null)
{
elements.Remove(opposingElement); // Remove that element, if not null
RaiseElementRemoved(opposingElement);
return;
}
// If less than 3 elements are in the stack, push that element back.
if (elements.Count < 3)
{
elements.Add(element);
RaiseOnElementPushed(element);
}
}
private void RaiseOnElementPushed(Element element)
{
if (ElementPushed != null)
{
ElementPushed(this, new PushedEventArgs(element));
}
}
private void RaiseElementRemoved(Element opposingElement)
{
if (ElementRemoved != null)
{
ElementRemoved.Invoke(this, new RemovedEventArgs(opposingElement));
}
}
public PushedEventArgs(Element pushedElement)
{
PushedElement = pushedElement;
}
public RemovedEventArgs(Element removedElement)
{
RemovedElement = removedElement;
}