= HowTo: Super =

== Description ==
SUPER is a macro defined in {{{core/Super.h}}}. It's capable to call a function in the parent class of another class. This avoids class-hierarchy-dependend code like {{{MyParentClass::function();}}}. Instead we use {{{SUPER(MyClass, function);}}}. As you can see, the super-call depends only on the current class. If the parent changes, we don't have to modify the code.

'''Important''': A super-function must be virtual and public. If you don't declare the function {{{public}}} you'll get a compiler error complaining about the private nature of the function.

[wiki:doc/Super] explains in detail how to add a new super-function.

== Usage ==
This is how you call the SUPER macro:
 * '''SUPER('''''MyClass, functionname, arguments...''''')''';
''MyClass'' is the name of the class implementing this function.[[br]]
''functionname'' is the name of the super-function.[[br]]
''arguments'': The arguments passed to the function. If the function takes no arguments, SUPER gets called with only 2 parameters (''MyClass'' and ''functionname'').

== Example ==
This is an example how to use SUPER:

*.h file:
{{{
#include "core/BaseObject.h"

class MyClass : public BaseObject
{
    public:
        virtual void XMLPort(Element& xmlelement, XMLPort::Mode mode);
};
}}}

*.cc file:
{{{
void MyClass::XMLPort(Element& xmlelement, XMLPort::Mode mode)
{
    SUPER(MyClass, XMLPort, xmlelement, mode);

    doSomething();
    ...
}
}}}