Computer Science in Perspective: Essays Dedicated to Thomas by Jürgen Albert, Holger Höhn (auth.), Rolf Klein, Hans-Werner

By Jürgen Albert, Holger Höhn (auth.), Rolf Klein, Hans-Werner Six, Lutz Wegner (eds.)

By featuring state of the art points of theoretical desktop technology and functional functions in a variety of fields, this booklet commemorates the sixtieth birthday of Thomas Ottmann.

The 26 learn papers awarded span the total variety of Thomas Ottmann's clinical occupation, from formal languages to algorithms and knowledge buildings, from themes in useful machine technology like software program engineering or database platforms to functions of internet expertise, groupware, and e-learning.

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Include: Edit folder). Alternative flow The Mail Tool User creates a new folder. (include: New Folder) Alternative flow The Mail Tool User selects a mail folder from a list of existing folders and deletes the folder. End Edit Folderlist Fig. 2. Textual description of use case Edit Folderlist The activity diagram in Fig. 3 refines the use case Edit Folderlist. It starts with the «decision interaction» which decides on the subsequent action. In case of having chosen the «business interaction» Select Folder, the Mail Tool User can select a mail folder from the current list of mail folders and afterwards decide to edit the selected folder ("control flow" moves to the «macro action» Edit Folder starting the associated use case) or to delete it ("control flow" moves to the «system action» Delete Folder).

External window structure and navigation for the Mail Tool A possible draft of the internal structure of the main window is provided by Fig. 7. The main window is divided into three panels. The top panel contains the buttons "Compose" and "Edit Adressbook". The panel "Edit Folderlist" includes the two subpanels for the Folderlist and the three buttons below. Analogously, the panel "Edit Folder" comprises the two subpanels for the list of mails and the four buttons below. Fig. 7. Draft of the Mail Tool’s main window Systematic Development of Complex Web-Based User Interfaces 31 If the Mail Tool is to be implemented as Web application, the composition of the Web-UI structure and the determination of the additional navigation proceed analogously to the GUI case.

An «application operation» is activated by the user during a «business interaction» and models an application function. It also stands for functions like editing or selecting 28 Henrik Behrens, Thorsten Ritter, and Hans-Werner Six instances of domain classes which are presented in a class view of the scene. After the execution of an «application operation» an implicit navigation to the next scene happens. Note that such an implicit navigation is triggered by the system and not activated by the user.

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