Controlling user interface objects through pre- and postconditions

  • Authors:
  • Daniel F. Gieskens;James D. Foley

  • Affiliations:
  • -;-

  • Venue:
  • CHI '92 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
  • Year:
  • 1992

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Abstract

We have augmented user interface objects (i.e. windows, menus, buttons, sliders, ets.) with preconditions that determine their visibility and their enabled/disabled status and postconditions that are asserted when certain actions are performed on the object. Postconditions are associated with each functionally different action on the object. Attaching pre- and postconditions to interface objects provides several useful features, such as selective enabling of controls, rapid prototyping, and automatic generation of explanations and help text.