@Override
  public void resolveEntryPoints(@NotNull final RefManager manager) {
    if (!myResolved) {
      myResolved = true;
      cleanup();
      validateEntryPoints();

      ApplicationManager.getApplication()
          .runReadAction(
              () -> {
                for (SmartRefElementPointer entryPoint : myPersistentEntryPoints.values()) {
                  if (entryPoint.resolve(manager)) {
                    RefEntity refElement = entryPoint.getRefElement();
                    ((RefElementImpl) refElement).setEntry(true);
                    ((RefElementImpl) refElement).setPermanentEntry(entryPoint.isPersistent());
                  }
                }

                for (ClassPattern pattern : myPatterns) {
                  final RefEntity refClass =
                      manager.getReference(RefJavaManager.CLASS, pattern.pattern);
                  if (refClass != null) {
                    for (RefMethod constructor : ((RefClass) refClass).getConstructors()) {
                      ((RefMethodImpl) constructor).setEntry(true);
                      ((RefMethodImpl) constructor).setPermanentEntry(true);
                    }
                  }
                }
              });
    }
  }
  @Override
  public void addEntryPoint(@NotNull RefElement newEntryPoint, boolean isPersistent) {
    if (!newEntryPoint.isValid()) return;
    if (isPersistent) {
      if (newEntryPoint instanceof RefMethod && ((RefMethod) newEntryPoint).isConstructor()
          || newEntryPoint instanceof RefClass) {
        final ClassPattern classPattern = new ClassPattern();
        classPattern.pattern = new SmartRefElementPointerImpl(newEntryPoint, true).getFQName();
        getPatterns().add(classPattern);

        final EntryPointsManager entryPointsManager =
            getInstance(newEntryPoint.getElement().getProject());
        if (this != entryPointsManager) {
          entryPointsManager.addEntryPoint(newEntryPoint, true);
        }

        return;
      }
    }

    if (newEntryPoint instanceof RefClass) {
      RefClass refClass = (RefClass) newEntryPoint;

      if (refClass.isAnonymous()) {
        // Anonymous class cannot be an entry point.
        return;
      }

      List<RefMethod> refConstructors = refClass.getConstructors();
      if (refConstructors.size() == 1) {
        addEntryPoint(refConstructors.get(0), isPersistent);
      } else if (refConstructors.size() > 1) {
        // Many constructors here. Need to ask user which ones are used
        for (RefMethod refConstructor : refConstructors) {
          addEntryPoint(refConstructor, isPersistent);
        }
      }
    }

    if (!isPersistent) {
      myTemporaryEntryPoints.add(newEntryPoint);
      ((RefElementImpl) newEntryPoint).setEntry(true);
    } else {
      if (myPersistentEntryPoints.get(newEntryPoint.getExternalName()) == null) {
        final SmartRefElementPointerImpl entry =
            new SmartRefElementPointerImpl(newEntryPoint, true);
        myPersistentEntryPoints.put(entry.getFQName(), entry);
        ((RefElementImpl) newEntryPoint).setEntry(true);
        ((RefElementImpl) newEntryPoint).setPermanentEntry(true);
        if (entry.isPersistent()) { // do save entry points
          final EntryPointsManager entryPointsManager =
              getInstance(newEntryPoint.getElement().getProject());
          if (this != entryPointsManager) {
            entryPointsManager.addEntryPoint(newEntryPoint, true);
          }
        }
      }
    }
  }
  public void removeEntryPoint(RefElement anEntryPoint) {
    if (anEntryPoint instanceof RefClass) {
      RefClass refClass = (RefClass) anEntryPoint;
      if (!refClass.isInterface()) {
        anEntryPoint = refClass.getDefaultConstructor();
      }
    }

    if (anEntryPoint == null) return;

    myTemporaryEntryPoints.remove(anEntryPoint);

    Set<Map.Entry<String, SmartRefElementPointer>> set = myPersistentEntryPoints.entrySet();
    String key = null;
    for (Map.Entry<String, SmartRefElementPointer> entry : set) {
      SmartRefElementPointer value = entry.getValue();
      if (value.getRefElement() == anEntryPoint) {
        key = entry.getKey();
        break;
      }
    }

    if (key != null) {
      myPersistentEntryPoints.remove(key);
      ((RefElementImpl) anEntryPoint).setEntry(false);
    }

    if (anEntryPoint.isPermanentEntry() && anEntryPoint.isValid()) {
      final Project project = anEntryPoint.getElement().getProject();
      final EntryPointsManagerImpl entryPointsManager = getInstance(project);
      if (this != entryPointsManager) {
        entryPointsManager.removeEntryPoint(anEntryPoint);
      }
    }
  }
  private void purgeTemporaryEntryPoints() {
    for (RefElement entryPoint : myTemporaryEntryPoints) {
      ((RefElementImpl) entryPoint).setEntry(false);
    }

    myTemporaryEntryPoints.clear();
  }
 @Override
 public void onInitialize(RefElement refElement) {
   ((RefElementImpl) refElement).setFlag(true, CAN_BE_FINAL_MASK);
   if (refElement instanceof RefClass) {
     final RefClass refClass = (RefClass) refElement;
     final PsiClass psiClass = refClass.getElement();
     if (refClass.isEntry()) {
       ((RefClassImpl) refClass).setFlag(false, CAN_BE_FINAL_MASK);
       return;
     }
     if (refClass.isAbstract() || refClass.isAnonymous() || refClass.isInterface()) {
       ((RefClassImpl) refClass).setFlag(false, CAN_BE_FINAL_MASK);
       return;
     }
     if (!refClass.isSelfInheritor(psiClass)) {
       for (PsiClass psiSuperClass : psiClass.getSupers()) {
         if (myManager.belongsToScope(psiSuperClass)) {
           RefClass refSuperClass = (RefClass) myManager.getReference(psiSuperClass);
           if (refSuperClass != null) {
             ((RefClassImpl) refSuperClass).setFlag(false, CAN_BE_FINAL_MASK);
           }
         }
       }
     }
   } else if (refElement instanceof RefMethod) {
     final RefMethod refMethod = (RefMethod) refElement;
     final PsiElement element = refMethod.getElement();
     if (element instanceof PsiMethod) {
       PsiMethod psiMethod = (PsiMethod) element;
       if (refMethod.isConstructor()
           || refMethod.isAbstract()
           || refMethod.isStatic()
           || PsiModifier.PRIVATE.equals(refMethod.getAccessModifier())
           || refMethod.getOwnerClass().isAnonymous()
           || refMethod.getOwnerClass().isInterface()) {
         ((RefMethodImpl) refMethod).setFlag(false, CAN_BE_FINAL_MASK);
       }
       if (PsiModifier.PRIVATE.equals(refMethod.getAccessModifier())
           && refMethod.getOwner() != null
           && !(refMethod.getOwnerClass().getOwner() instanceof RefElement)) {
         ((RefMethodImpl) refMethod).setFlag(false, CAN_BE_FINAL_MASK);
       }
       for (PsiMethod psiSuperMethod : psiMethod.findSuperMethods()) {
         if (myManager.belongsToScope(psiSuperMethod)) {
           RefMethod refSuperMethod = (RefMethod) myManager.getReference(psiSuperMethod);
           if (refSuperMethod != null) {
             ((RefMethodImpl) refSuperMethod).setFlag(false, CAN_BE_FINAL_MASK);
           }
         }
       }
     }
   }
 }
  @Override
  public void removeEntryPoint(@NotNull RefElement anEntryPoint) {
    myTemporaryEntryPoints.remove(anEntryPoint);

    Set<Map.Entry<String, SmartRefElementPointer>> set = myPersistentEntryPoints.entrySet();
    String key = null;
    for (Map.Entry<String, SmartRefElementPointer> entry : set) {
      SmartRefElementPointer value = entry.getValue();
      if (value.getRefElement() == anEntryPoint) {
        key = entry.getKey();
        break;
      }
    }

    if (key != null) {
      myPersistentEntryPoints.remove(key);
    }
    ((RefElementImpl) anEntryPoint).setEntry(false);

    if (anEntryPoint.isPermanentEntry() && anEntryPoint.isValid()) {
      final Project project = anEntryPoint.getElement().getProject();
      final EntryPointsManager entryPointsManager = getInstance(project);
      if (this != entryPointsManager) {
        entryPointsManager.removeEntryPoint(anEntryPoint);
      }
    }

    if (anEntryPoint instanceof RefMethod && ((RefMethod) anEntryPoint).isConstructor()
        || anEntryPoint instanceof RefClass) {
      final RefClass aClass =
          anEntryPoint instanceof RefClass
              ? (RefClass) anEntryPoint
              : ((RefMethod) anEntryPoint).getOwnerClass();
      final String qualifiedName = aClass.getQualifiedName();
      for (Iterator<ClassPattern> iterator = getPatterns().iterator(); iterator.hasNext(); ) {
        if (Comparing.equal(iterator.next().pattern, qualifiedName)) {
          // todo if inheritance or pattern?
          iterator.remove();
        }
      }
    }
  }