Developing a DSL Graphical Notation - Eclipse Modeling Project: A Domain-Specific Language Toolkit - page 114

G001 G002

F G003 F

R001 R002

F F F

R004 R003 R006

F

R005

Figure 4-19 Requirements dependency diagram

4.4.5 ToolTips

Because we have decided not to clutter our dependency view by displaying only
the ID of each Requirement and RequirementGroup , we need to populate a
ToolTip with the Requirement 's title. This provides a convenient way to browse
the diagram with the mouse but not have to select each element and look in the
Properties view to see its information. For now, we just display the title attrib-
ute value in a Label by modifying the createMainFigure() method of the
RequirementEditPart class, as follows:

/**
* Creates figure for this edit part.
*
* Body of this method does not depend on settings in generation model,
* so you may safely remove <i>generated</i> tag and modify it.
*
* @generated NOT
*/
protected NodeFigure createMainFigure() {
NodeFigure figure = createNodePlate();
figure.setLayoutManager(new StackLayout());
IFigure shape = createNodeShape();
figure.add(shape);
contentPane = setupContentPane(shape);