The UML semantic defines only the UML metamodel. A modeling tool developed by No Magic Inc. has its own structure of classes for UML elements representation in the diagram. The base class of this structure is com.nomagic.magicdraw.uml.symbols.PresentationElement. A presentation element is a textual or graphical presentation of one or more model elements.
Presentation elements are sometimes called symbols also.
In the metamodel, a PresentationElement is the com.nomagic.magicdraw.uml.BaseElement that presents a set of model elements to a user. It is the base for all metaclasses used for the presentation. All other metaclasses with this purpose are indirect subclasses of PresentationElement.
A current version of Open API provides just a basic structure of presentation elements:
Every presentation element can have children. For example, com.nomagic.magicdraw.uml.symbols.DiagramPresentationElement has a collection of inner presentation elements. PresentationElement of some Package can have a collection of presentation elements for inner Package elements.
Current version PresentationElement API allows you to:
- Access element bounds PresentationElement.getBounds()
- Access a model com.nomagic.uml2.ext.magicdraw.classes.mdkernel.Element of a presentation element PresentationElement.getElement(). A presentation element can have no Element, for example, a com.nomagic.magicdraw.uml.symbols.shapes.TextBoxView.
- Access children PresentationElement.getPresentationElements()
- Access properties of the element PresentationElement.getProperty(java.lang.String), PresentationElement.getPropertyManager(). The sample of properties would be the Suppress Operations property for a class presentation element, the Autosize property for any com.nomagic.magicdraw.uml.symbols.shapes.ShapeElement.
- Select/unselect or access a selection state of the presentation element (PresentationElement.isSelected(), PresentationElement.setSelected(boolean)).
A subclass of presentation elements com.nomagic.magicdraw.uml.symbols.paths.PathConnector provides information about connected paths to the presentation element. To get a collection of connected paths to the presentation element, use the method PathConnector.getConnectedPathElements().
- Diagram presentation element
- Shapes
- Paths
- Working with presentation elements
- Creating shape elements
- Creating path elements
- Reshaping shape elements
- Moving symbols on diagram to another location
- Moving symbols on diagram to another location and to different parent
- Changing path break points
- Deleting presentation elements
- Changing properties of presentation elements
- Managing compartments
- Collecting presentation elements, finding usages in diagrams
- Displaying related elements in the diagram
- Layouting symbols in the diagram
- Custom presentation elements rendering