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Class Diagram top/bottom example

See original GitHub issue

Hi,

I’m a new engineer for the OpenCAESAR project at NASA’s JPL. I’ve been trying to learn how sprotty works and admittedly it’s been difficult since there doesn’t appear to be a lot of documentation.

How exactly should we add labels similar to the top/bottom labels in the Class Diagram example? I looked at the source and it seems like they’re implemented directly in some sort of schema, but why is it done this way?

<SLabelSchema> {
    id: 'edge1_label_bottom',
    type: 'label:text',
    text: 'bottom',
    edgePlacement:  {
        position: 0,
        side: 'bottom',
    }
},

What if we want different text to render based on certain conditions? Should I be extending the SLabelView?

We created our own LSP with Xtext. Below is a piece of our DiagramGenerator, and the subtext child for the edge below is what I’m trying to render right next to the origin of the edge.

	protected dispatch def void addToDiagram(ReifiedRelationship relationship, SGraph diagram) {
		if (relationship.source === null || relationship.target === null) {
			return
		}
		
		postProcesses.add([
			var source = semantic2diagram.get(relationship.source)
			if (source === null) {
				relationship.source.addToDiagram(diagram)
				source = semantic2diagram.get(relationship.source)
			}
			
			var target = semantic2diagram.get(relationship.target)
			if (target === null) {
				relationship.target.addToDiagram(diagram)
				target = semantic2diagram.get(relationship.target)
			}

			val id = relationship.getLocalName(resource)
			val edge = newEdge(source, target, id, "augments") => [
				children += newSElement(SLabel, id + '-label', 'text') => [
					text = id
				]
				if (relationship.inverseFunctional) {
					children += newSElement(SLabel, 'oml-invFunc', 'subtext') => [
						text = "[0,1]"
					]
				}
			]
			semantic2diagram.get(resource.contents.head).children += edge
			trace(edge, relationship)
		])
	}