11.5: Multiple Edges

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The message edgesFrom: is used to draw one edge at most per node. A variant of it is edges:from:toAll:. It supports the definition of several edges starting from a given node. Consider the dependencies between classes. The script:

view shape rectangle
    size: [:cls | cls referencedClasses size ];
    withText.
view nodes: ArrayedCollection withAllSubclasses.
view shape arrowedLine.
view
    edges: ArrayedCollection withAllSubclasses from: #yourself toAll: #referencedClasses.
view circleLayout.

The obtained visualization is given in Figure \(\PageIndex{1}\).

References between classes. — Figure \(\PageIndex{1}\): Direct references between classes.

String and CompiledMethod clearly shows up. These two classes contains many references to other classes. We also see that text: makes a shape contain a text.

Mondrian provides a set of utility methods to easily create elements. Consider the expression:

view edgesFrom: #superclass

edgesFrom: is equivalent to edges:from:to: :

view edges: Collection withAllSubclasses from: #superclass to: #yourself.

itself equivalent to

view
    edges: Collection withAllSubclasses
    from: [ :each | each superclass ]
    to: [ :each | each yourself ].