Question

I’ve added a quickfix option to my DSL in which I want to make some modifications to the document text – including renaming some element. I can change text in that element just fine, but I want to also rename all of its references – i.e. rename refactoring. How do I do that?

Can I somehow trigger the built-in rename refactoring from inside a quickfix? Or alternatively, how do I go over all of the element’s references and change them?

Answer 1

So, I found a way to programmatically trigger a rename refactor. I don’t know if it’s the “proper” way – I guess it isn’t, since I had to add @SuppressWarnings("restriction") to my code – but it works:

private void performDirectRenameRefactoring(EObject object, String newName) throws InterruptedException {
    XtextEditor editor = EditorUtils.getActiveXtextEditor();
    IRenameElementContext renameContext = new IRenameElementContext.Impl(
        EcoreUtil.getURI(object),
        object.eClass(),
        editor,
        editor.getSelectionProvider().getSelection(),
        null);
    IRenameSupport rename = renameSupportFactory.create(renameContext, newName);
    rename.startDirectRefactoring();
}

So to call this from a quick fix, all you need to do is to get the EObject and calculate the new name. If the issue occupies a part of the EObject itself, the object could be retrieved by:

private EObject findObject(IXtextDocument doc, final Issue issue) {
    EObject object = doc.readOnly(new IUnitOfWork<EObject, XtextResource>() {
        public EObject exec(XtextResource state) throws Exception {
            return state.getEObject(issue.getUriToProblem().fragment());
        }
    });
}

You can get an IXtextDocument from either IssueResolutionAcceptor (which you should have if you’re handling an issue) or from IModificationContext (which you should have if you’re proposing a change).