[webkit-dev] pywebkitgtk - adding DOM javascript executing and evaluation; next step, addEventListener etc.

in "WebCore/loader/ImageDocument.cpp", you have an example addEventListener(), which adds a class listener resulting in ImageListener::handleEvent() being called at line 334... .. is it as simple as that?? if i write some functions which make it possible to add event listeners to nodes (including e.g. document.window), is that basically it? the infrastructure already exists, in c-code (well... c++ anyway) for event callbacks?