@Override
public void beforeDocumentChange(DocumentEvent event) {
final Document document = event.getDocument();
final FileViewProvider viewProvider = getCachedViewProvider(document);
if (viewProvider == null) return;
if (!isRelevant(viewProvider)) return;
VirtualFile virtualFile = viewProvider.getVirtualFile();
if (virtualFile.getFileType().isBinary()) return;
final List<PsiFile> files = viewProvider.getAllFiles();
PsiFile psiCause = null;
for (PsiFile file : files) {
mySmartPointerManager.fastenBelts(file, event.getOffset(), null);
if (TextBlock.get(file).isLocked()) {
psiCause = file;
}
}
if (psiCause == null) {
beforeDocumentChangeOnUnlockedDocument(viewProvider);
}
((SingleRootFileViewProvider) viewProvider).beforeDocumentChanged(psiCause);
}
