How to add/create a new Concept using the Open API?

You may take inspiration from the "CreateMissingStub" quick fix:

execute(node)->void { 
  node<ConceptDeclaration> declaration = node : ConceptDeclaration; 
  string name = declaration.name; 
  string virtualPackage = declaration.virtualPackage; 
  node<ConceptDeclaration> stub = declaration.model.new root node(ConceptDeclaration); 
  stub.name = "Stub" + name; 
  stub.virtualPackage = virtualPackage; 
  stub.extends.set(declaration); 
  node<InterfaceConceptReference> ref1 = new node<InterfaceConceptReference>(); 
  ref1.intfc.set(concept/IDontSubstituteByDefault/.asNode); 
  stub.implements.add(ref1); 
  node<InterfaceConceptReference> ref2 = new node<InterfaceConceptReference>(); 
  ref2.intfc.set(concept/IStubForAnotherConcept/.asNode); 
  stub.implements.add(ref2); 
   
  SModel model = declaration/.getModel(); 
  if (model == null) { return; } 
  SModule language = model.getModule(); 
  SModel editorModel = LanguageAspect.EDITOR.get((Language) language); 
  if (editorModel == null) { return; } 
   
  node<ConceptEditorDeclaration> editor = new node<ConceptEditorDeclaration>(); 
  editor.conceptDeclaration.set(stub); 
  editor.virtualPackage = virtualPackage; 
  node<CellModel_Component> component = new node<CellModel_Component>(); 
  component.editorComponent.set(node/ImplementationRemovedInStubMessage/); 
  editor.cellModel.set(component); 
  editorModel.addRootNode(editor); 
}

node<ConceptEditorDeclaration> editor = new node<ConceptEditorDeclaration>();

I'm not able to import the jetbrains.mps.lang.editor.structure.ConceptEditorDeclaration into my Action. What dependencies and languages do I have to import, in order to make it work?

I tried the following dependencies and languages:

Dependencies:

---

jetbrains.mps.lang.structure.editor@java_stub
jetbrains.mps.openapi.editor@java_stub
jetbrains.mps.baselanguage.editor

Used Languages:

---

jetbrains.mps.baselanguage
jetbrains.mps.lang.editor
jetbrains.mps.lang.structure

Unfortunately most of these imports are grayed out, so I figured they are not being used..?

j.m.lang.editor.structure is the model that you need to depend on, I believe.

Thank you very much! It is working, but the import gives me (out of scope). Why is that?
FYI my action is contained in a Plugin Aspect in my language. Perhaps this has something to do with the issue?

I guess you're missing j.m.lang.editor dependency in the surrounding module (solution). Could it be it?

Vaclav

Nope, the surrounding module already depends on jetbrains.mps.lang.editor... It's kinda weird, 'cause even so it's working properly.

Sorry, I meant the dependencies of the surrounding Language, not Solution.

Yo may also try to add the import by Control/Cmd + R and typing "ConceptEditorDeclaration". This should import both the language and the model dependencies.