IF_WD_PORTAL_INTEGRATION 
Class IF_WD_PORTAL_INTEGRATION as the portal manager provides all the necessary methods for integrating Web Dynpro ABAP applications into the portal.
See also:
Methods
NAVIGATE_TO_OBJECT
Method for Object-Based Navigation (OBN).
NAVIGATE_ABSOLUTE
Method for Absolute Navigation.
NAVIGATE_RELATIVE
Method for Relative Navigation.
FIRE
Method for firing a portal event, see also Triggering a Portal Event.
SUBSCRIBE_EVENT and UNSUBSCRIBE_EVENT
Methods for registering for an event and for deleting the registration, see also Registering and Handling an Event.
SET_APPLICATION_DIRTY_FLAG
Method for setting the “dirty” flag, see also Work Protect Mode.
SET_WORK_PROTECT_MODE
Method for setting the Work Protect Mode.