Processes a mouse event.
event
is a
MouseEvent
with source being the receiving element's component.
path
is the path of the receiving element in the menu
hierarchy including the receiving element itself.
manager
is the
MenuSelectionManager
for the menu hierarchy.
This method should process the
MouseEvent
and change
the menu selection if necessary
by using
MenuSelectionManager
's API
Note: you do not have to forward the event to sub-components.
This is done automatically by the
MenuSelectionManager
.