AbstractInformationControlManager.computeSizeConstraints(
Control subjectControl,
IInformationControl informationControl)
Computes the size constraints of the information control in points based on the
default font of the given subject control as well as the size constraints in character
width.
AbstractInformationControlManager.IInformationControlCloser.setInformationControl(
IInformationControl control)
Sets the closer's information control, the one to close if necessary.