use grabbed flag and pre-post swap callbacks.
use grabbed flag and pre-post swap callbacks.



SVN revision: 45517

tizenorg/platform.upstream.enlightenment,FlorentRevest/Enlightenment,rvandegrift/e,FlorentRevest/Enlightenment,FlorentRevest/Enlightenment,tizenorg/platform.upstream.enlightenment,tasn/enlightenment,tasn/enlightenment,tasn/enlightenment,rvandegrift/e,rvandegrift/e,tizenorg/platform.upstream.enlightenment