Developing a DSL Graphical Notation - Eclipse Modeling Project: A Domain-Specific Language Toolkit - page 106

Table 4-11 Requirements Figure Definition (continued)

Element Property Value

Default Size Facet

Dimension Dx, Dy 20, 20

Node Name RequirementGroup

Figure Figure Descriptor

RoundedRectangleCenterLabel

Resize Constraint NONE

Default Size Facet

Dimension Dx, Dy 50, 20

Connection Name RequirementChild

Figure Figure Descriptor SolidLine

Connection Name GroupRequirement

Figure Figure Descriptor SolidLine

Connection Name Dependency

Figure Figure Descriptor

DashedLineWithOpenArrow

Connection Name GroupChild

Figure Figure Descriptor SolidLine

Diagram Label Name RequirementTitle

Figure Figure Descriptor BasicLabel

Diagram Label Name RequirementGroupName

Figure Figure Descriptor

RoundedRectangleCenterLabel

Diagram Label Name RequirementType

Figure Figure Descriptor Circle

Note that the Resource Constraint property is set to NONE on both the
Requirement and RequirementGroup nodes. This makes the node nonresiz-
able. Another option to make an element nonresizable is to add org.eclipse.
gef.editpolicies.NonResizableEditPolicy to the Primary Drag
Policy Qualified Class Name property of the corresponding Gen Top
Level Node property in the gmfgen model. Alternatively, you can use the
NonResizableEditPolicyEx class from the GMF runtime.