Modelling Human Factors using the Systems Modelling Language

HFIDTC/2/WP2.8.9/1Version 2/ 24th September 2008Figure 7-21 - Block Definition Diagram – Situation DisplayThe diagram above shows that the Situation Display Window is composed of a set ofcontrols, graphics, icons and tooltips. It specifies properties and attributes for theseblocks. For example, the Soldier Icon has properties including its height, width andcolour, and operations such as ‘On Mouse Over’ and ‘On Click’. The User InterfaceDesign Specification would specify what happens when these operations are called. Forexample, the On Mouse Over operation for the Soldier icon will display a tooltip adjacentto the icon that displays that soldier’s ID and Callsign.It is likely that the design work to produce such SysML representations of the UI will besupported by graphical designs. Figure 7-22 and Figure 7-23 show possible renderings ofthe diagram above. The production of such UI designs may both drive, and be driven by,the production of SysML representations of the UI.42