find groovy usages of methods overriding the search target

plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/impl/statements/expressions/GrReferenceExpressionImpl.java

@@ -67,6 +67,7 @@ import org.jetbrains.plugins.groovy.lang.resolve.ResolveUtil;
 import org.jetbrains.plugins.groovy.lang.resolve.processors.*;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.EnumSet;
 import java.util.List;
 
@@ -816,7 +817,19 @@ public class GrReferenceExpressionImpl extends GrReferenceElementImpl<GrExpressi
   }
 
   public boolean isReferenceTo(PsiElement element) {
-    return getManager().areElementsEquivalent(element, GroovyTargetElementEvaluator.correctSearchTargets(resolve()));
+    PsiElement target = GroovyTargetElementEvaluator.correctSearchTargets(resolve());
+    if (getManager().areElementsEquivalent(element, target)) {
+      return true;
+    }
+
+    if (element instanceof PsiMethod && target instanceof PsiMethod) {
+      PsiMethod[] superMethods = ((PsiMethod)target).findSuperMethods(false);
+      if (Arrays.asList(superMethods).contains((PsiMethod)element)) {
+        return true;
+      }
+    }
+
+    return false;
   }
 
   @NotNull

plugins/groovy/src/org/jetbrains/plugins/groovy/lang/psi/util/PsiUtil.java

@@ -304,7 +304,7 @@ public class PsiUtil {
 
   public static <Qualifier extends PsiElement> boolean shortenReference(GrQualifiedReference<Qualifier> ref) {
     final Qualifier qualifier = ref.getQualifier();
-    if (qualifier != null &&
+    if (qualifier != null && !(qualifier instanceof GrSuperReferenceExpression) &&
         (PsiTreeUtil.getParentOfType(ref, GrDocMemberReference.class) != null ||
          PsiTreeUtil.getParentOfType(ref, GrDocComment.class) == null) &&
         PsiTreeUtil.getParentOfType(ref, GrImportStatement.class) == null &&

plugins/groovy/test/org/jetbrains/plugins/groovy/lang/findUsages/FindUsagesTest.java

@@ -139,6 +139,10 @@ public class FindUsagesTest extends LightGroovyTestCase {
     doTestImpl("A.groovy", 1);
   }
 
+  public void testOverridingMethodUsage() throws Throwable {
+    doTestImpl("OverridingMethodUsage.groovy", 2);
+  }
+
   public void testAnnotatedMemberSearch() throws Throwable {
 
     final PsiReference ref = myFixture.getReferenceAtCaretPosition("A.groovy");

plugins/groovy/testdata/findUsages/overridingMethodUsage/OverridingMethodUsage.groovy

@@ -0,0 +1,11 @@
+class Bar {
+    boolean isFo<caret>cused() { }
+}
+
+class BarImpl extends Bar {
+    @Override
+    boolean isFocused() { }
+}
+
+println new BarImpl().focused
+println new BarImpl().isFocused()