i introduced a new enum in the Plasma namespace, ItemType, so we can keep track of these id's centrally.
however, the right click mechanism is rather broken in its implementation; we need a way to offer a centralized menu on appets no metter where they are clicked.
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=678562
#include <plasma/foo.h>
in headers in libplasma. this is important so that they can be used post-install by third party plugins, apps, etc.
also, changed Applet::loadDataEngine to just Applet::dataEngine and make it actually return the data engine; move the applets to using it. safer and fewer LoC
svn path=/trunk/KDE/kdebase/workspace/lib/plasma/; revision=670850
* add a FormFactor for MediaCenter
* ScreenEdge -> Location, as it isn't always an edge
* document enum values
svn path=/trunk/KDE/kdebase/workspace/plasma/lib/; revision=668310
