Since 2.2, the supported solution is using IEditedResourceProvider
with an EmbeddedEditorFactory
(since editing an attribute belongs to an embedded editor anyway). Sample code in Xtend (the attribute is updated whenever the editor changes):
val injector = MyDslActivator.instance.getInjector(MyDslActivator.COM_EXAMPLE_MY_DSL)
val resourceSet = injector.getInstance(IResourceSetProvider).get(null)
val fileExtension = injector.getInstance(Key.get(String, Names.named(Constants.FILE_EXTENSIONS)))
val resourceProvider = [|
resourceSet.createResource(createURI('''temp.«fileExtension»''')) as XtextResource
]
injector.getInstance(EmbeddedEditorFactory).newEditor(resourceProvider).withParent(parent) => [
createPartialEditor("", editedAttribute ?: "", "", false)
document.addModelListener[_ | editedAttribute = document.get]
]
Based on: EditTemplateDialog source, StackOverflow, Eclipse Forum.