@Nullable
public static PsiQualifiedReferenceElement getClassReferenceToShorten(
@NotNull final PsiClass refClass,
final boolean addImports,
@NotNull final PsiQualifiedReferenceElement reference) {
PsiClass parentClass = refClass.getContainingClass();
if (parentClass != null) {
JavaPsiFacade facade = JavaPsiFacade.getInstance(parentClass.getProject());
final PsiResolveHelper resolveHelper = facade.getResolveHelper();
if (resolveHelper.isAccessible(refClass, reference, null)
&& isSafeToShortenReference(reference.getReferenceName(), reference, refClass)) {
return reference;
}
if (!CodeStyleSettingsManager.getSettings(reference.getProject())
.INSERT_INNER_CLASS_IMPORTS) {
final PsiElement qualifier = reference.getQualifier();
if (qualifier instanceof PsiQualifiedReferenceElement) {
return getClassReferenceToShorten(
parentClass, addImports, (PsiQualifiedReferenceElement) qualifier);
}
return null;
}
}
if (addImports && !((PsiImportHolder) reference.getContainingFile()).importClass(refClass))
return null;
if (!isSafeToShortenReference(reference, refClass)) return null;
return reference;
}
@NotNull
private static ASTNode replaceReferenceWithShort(PsiQualifiedReferenceElement reference) {
ASTNode node = reference.getNode();
assert node != null;
deQualifyImpl((CompositeElement) node);
return node;
}