Box-orientation Constants:
static int TOP
static int LEFT
static int BOTTOM
static int RIGHT
Geographical-direction Constants:
static int NORTH
static int NORTH_EAST
static int EAST
static int SOUTH_EAST
static int SOUTH
static int SOUTH_WEST
static int SOUTH
static int NORTH_WEST
static int CENTER
The orientation of a component:
static int HORIZONTAL
static int VERTICAL