@Override
public RefactoringStatus checkInitialConditions(final IProgressMonitor monitor)
throws CoreException {
final SubMonitor progress = SubMonitor.convert(monitor, 6);
try {
if (fSelectionRegion != null) {
fSourceUnit.connect(progress.newChild(1));
try {
final AbstractDocument document = fSourceUnit.getDocument(monitor);
final IRModelInfo modelInfo =
(IRModelInfo)
fSourceUnit.getModelInfo(
RModel.TYPE_ID, IRModelManager.MODEL_FILE, progress.newChild(1));
if (modelInfo != null) {
final IRegion region = fAdapter.trimToAstRegion(document, fSelectionRegion);
ISourceStructElement element =
LTKUtil.getCoveringSourceElement(modelInfo.getSourceElement(), region);
while (element != null) {
if (element instanceof IRMethod) {
fFunction = (IRMethod) element;
break;
}
element = element.getSourceParent();
}
}
if (fFunction != null) {
final ISourceStructElement source = (ISourceStructElement) fFunction;
fOperationRegion =
fAdapter.expandSelectionRegion(document, source.getSourceRange(), fSelectionRegion);
}
} finally {
fSourceUnit.disconnect(progress.newChild(1));
}
}
if (fFunction == null) {
return RefactoringStatus.createFatalErrorStatus(
Messages.FunctionToS4Method_error_InvalidSelection_message);
}
final RefactoringStatus result = new RefactoringStatus();
fAdapter.checkInitialForModification(result, fElementSet);
progress.worked(1);
if (result.hasFatalError()) {
return result;
}
checkFunction(result);
progress.worked(2);
return result;
} finally {
progress.done();
}
}
