At the most abstract level, the protocol is given by 3 interfaces:
Similarly, a wizard page is any object implementing IWizardPage. The abstract base class WizardPage is provided as a starting point. The main responsibility of a WizardPage subclass is providing the SWT controls and the backing logic for a single wizard page.
WizardDialog is a ready-to-use JFace dialog that is instantiated with a wizard and acts as the wizard's container. This dialog has a standard layout: an area at the top containing the wizard's title, description, and image; the actual wizard page appears in the middle; below it is a progress indicator; and at the bottom is an area with a message line and a button bar containing Next, Back, Finish, Cancel, and Help buttons.
WizardSelectionPage, a special abstract subclass of WizardPage, allows whole other wizards to be connected to a root page.
Note: None of the classes in this package maintain global state.