Represents a Window Controller.
Occurs when a Controller is activated.
Occurs after a Controller is created.
Occurs after a Controller has been deactivated.
Occurs after a Frame (Window) has been assigned to a Controller.
Occurs after closing the View of the Window Controller's Window.
Occurs before closing the View of the Window Controller's Window.
Occurs when checking whether the View of the Window Controller's Window is allowed to be closed.