DiagramNodeMapping

A node mapping in a Diagram. Intended for advanced use cases where you need fine-grained controls over nodes, and the config options available in cells are not granular enough.

Name	Type	Description
allowLoopback?	boolean	Whether or not to allow edges from this vertex back to itself. Defaults to true. This flag will not prevent an edge from a port back to the node/group to which it belongs - for that, see allowVertexLoopback.
allowVertexLoopback?	boolean	Whether or not to allow edges from a port back to the vertex it belongs to. Defaults to true.
anchorPositionFinder?	AnchorPositionFinder<any>	Optional function to call on connection drop, to determine the location for the target anchor for the new connection. Returning null from this indicates no preference, and VisuallyJs will use its own computed value.
anchorPositions?	Array<ObjectAnchorSpec>	Optional array of anchor positions to use.
defaultSize?	Size	Optional default size to use for the vertex. This is not used to set the size in the DOM for a vertex - it is used to insert width and height values into the backing data for any vertex of this type that does not have them set.
edgeType?	string	Type to assign to edges connected to this vertex as a source.
events?	EVT	Optional map of event bindings.
maxConnections?	number	Maximum number of connections this vertex supports. Default is 1. A value of -1 means no limit.
mergeStrategy?	string	When merging a type description into its parent(s), values in the child for connector, anchor and anchors will always overwrite any such values in the parent. But other values, such as overlays, will be merged with their parent's entry for that key. You can force a child's type to override every corresponding value in its parent by setting mergeStrategy:'override'.
parameters?	Record<string,any>	A map of parameters that the template engine will merge with the backing data when rendering the vertex.
parent?	string | Array<string>	Optional ID of one or more edge definitions to include in this definition. The child definition is merged on top of the parent definition(s). Circular references are not allowed and will throw an error.
templateIdResolver?	(data:ObjectData, ui:UICore<BrowserElement>, model:VisuallyJsModel, object:Vertex) => string	A function that can resolve the ID of the template to use for the given vertex. This is an advanced configuration that is not often needed, and is only for 'vanilla' VisuallyJs. This function will take precedence over both template and templateId.