public RefactoringStatus checkActivationBasics(CompilationUnit rootNode) throws CoreException {
RefactoringStatus result = new RefactoringStatus();
fRootNode = rootNode;
fAnalyzer = new SurroundWithTryCatchAnalyzer(fCUnit, fSelection);
fRootNode.accept(fAnalyzer);
result.merge(fAnalyzer.getStatus());
ITypeBinding[] exceptions = fAnalyzer.getExceptions();
if (fIsMultiCatch && (exceptions == null || exceptions.length <= 1)) {
result.merge(
RefactoringStatus.createWarningStatus(
RefactoringCoreMessages.SurroundWithTryCatchRefactoring_notMultipleexceptions));
}
return result;
}
