Nested Graph

[arcanefoam]

I am trying to make a node contain a subgraph (edges and nodes). It this possible? I have done it in code, but in the editor the parent node does not change size to fit the child elements. Further, I can place the nested nodes anywhere in the graph, not only in its parent.

[tortmayr]

Hi @arcanefoam,

we have first-level supported for structured-nested nodes in GLSP. For reference you can look at the Category nodes in the workflow example:

What kind of layout do you want for your subgraph? Are the elements freely placeable/moveable in the subnode?
If so you can look at the Category nodes of the workflow example for reference:

In a nutshell, you need to wrap the children of your subgraph/node intoa a container with free-form layout.
See https://github.com/eclipse-glsp/glsp-server-node/blob/79035df6eee608a14015ef71cadd9923b787a62e/examples/workflow-server/src/common/graph-extension.ts#L159

Further, I can place the nested nodes anywhere in the graph, not only in its parent.

You can adjust this behavior with the server side diagram-configuration.
Just create a ShapeTypeHint for the parent node/compartment of your subgraph and define the containableElementIds.