The manager and the grapher are graphic
objects that can be embedded inside another manager or grapher.
This nesting feature of Rogue Wave JViews allows you to create
applications that display a graph inside another graph.
The manager and the grapher are the main
classes that can contain graphic objects for displaying and
manipulating in several views.
For an introduction to the manager ( IlvManager) and its subclass the grapher ( IlvGrapher), see Managers and Graphers of The Essential JViews Framework.
The following figure shows an example of
nested graphs.
Nested graphs
In this figure, the object entitled “Obtain Supplies” is a grapher
(instance of IlvGrapher) that itself contains two other
graphers, “deliver supplies” and “pay for supplies.” The figure
shows that a manager (and a grapher) can be surrounded by a frame;
in this example the three (blue) frames each display the name of
the manager as a title. This type of decoration as well as the
background of the submanager can be completely customized. Another
feature shown in this example is the fact that links between nodes
can cross subgraph boundaries. Such links are called intergraph links.
Each grapher or manager embedded inside
another manager or grapher can also be displayed in several views,
just like top-level managers.
A manager or grapher embedded inside
another manager has two different representations: an expanded
state where all the objects contained in the submanager are
visible, and a collapsed state where the manager is drawn with a
collapsed representation that can also be customized.