The Diagrammer Class

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The diagram component is represented by the IlvDiagrammer class, which is in the main ILOG JViews Diagrammer package, ilog.views.diagrammer, see Figure 1.2.

The IlvDiagrammer class is a façade that gives easy access to the following underlying facilities:

• The SDM (Stylable Data Mapper) engine in the package ilog.views.sdm, which transforms your application data into graphic objects on your screen, based on styling information contained in one or more style sheets.
• A project, which gives access to the first style sheet and the data source for loading your data.
• A grapher, which is a low-level object whose role is to manage the nodes and the links and arrange them as a graph.
• An SDM View (also in the SDM package), which displays the resulting diagram on the screen.
• The Graph Layout package ( (ilog.views.graphlayout), which contains advanced algorithms used to place the nodes and to route the links of the graph. Several graph layout algorithms are available, each adapted to a particular type of graph or to a particular application domain. (Graph layout features are available only if you purchased a full JViews Diagrammer license.)
• The Composite Graphics package ((ilog.views.graphic.composite), which lets you define complex graphic objects from basic elements like shapes, text, and icons.
• The Application package ( ilog.views.diagrammer.application), which contains Swing objects such as actions and toolbars that make it very easy to build a complete Swing GUI around a diagram component. A prebuilt application is also available in the Application package.