Thesis full text PDF - Politecnico di Milano

output; the first time you connect a source Action unit with another target unit the link will be aSuccess link, which represents the success path needed for the controller configuration file. Thesecond link will be a Failure link, which represents the failure path of the Action unit. If there isno Failure link the target unit, connected to the Success link, will be considered both the successpath and the failure path.Figure 5.7 – Use case “Add an element”The user can remove a unit or a link selecting it and cancelling or using the undo / redo functionof the tool.Figure 5.8 – Use case “Delete an element”For each unit the developer can set a list of properties which will go to define the controllerconfiguration file of the application. These properties are managed using the Property panel ofthe tool. As regards the Form unit we have to specify that the user can define the own properties52