private static boolean allSuperMethodsSelectedToDelete(
List<PsiMethod> unselectedMethods, PsiMethod method) {
final ArrayList<PsiMethod> superMethods =
new ArrayList<>(Arrays.asList(method.findSuperMethods()));
superMethods.retainAll(unselectedMethods);
return superMethods.isEmpty();
}
@Nullable
private static Condition<PsiElement> findMethodUsages(
final PsiMethod psiMethod, final PsiElement[] allElementsToDelete, List<UsageInfo> usages) {
final Collection<PsiReference> references = ReferencesSearch.search(psiMethod).findAll();
if (psiMethod.isConstructor()) {
return findConstructorUsages(psiMethod, references, usages, allElementsToDelete);
}
final PsiMethod[] overridingMethods =
removeDeletedMethods(
OverridingMethodsSearch.search(psiMethod).toArray(PsiMethod.EMPTY_ARRAY),
allElementsToDelete);
findFunctionalExpressions(usages, ArrayUtil.prepend(psiMethod, overridingMethods));
final HashMap<PsiMethod, Collection<PsiReference>> methodToReferences = new HashMap<>();
for (PsiMethod overridingMethod : overridingMethods) {
final Collection<PsiReference> overridingReferences =
ReferencesSearch.search(overridingMethod).findAll();
methodToReferences.put(overridingMethod, overridingReferences);
}
final Set<PsiMethod> validOverriding =
validateOverridingMethods(
psiMethod,
references,
Arrays.asList(overridingMethods),
methodToReferences,
usages,
allElementsToDelete);
for (PsiReference reference : references) {
final PsiElement element = reference.getElement();
if (!isInside(element, allElementsToDelete) && !isInside(element, validOverriding)) {
usages.add(
new SafeDeleteReferenceJavaDeleteUsageInfo(
element,
psiMethod,
PsiTreeUtil.getParentOfType(element, PsiImportStaticStatement.class) != null));
}
}
final List<PsiMethod> calleesSafeToDelete =
SafeDeleteJavaCalleeChooser.computeCalleesSafeToDelete(psiMethod);
if (calleesSafeToDelete != null) {
for (PsiMethod method : calleesSafeToDelete) {
usages.add(new SafeDeleteMethodCalleeUsageInfo(method, psiMethod));
}
}
return usage -> {
if (usage instanceof PsiFile) return false;
return isInside(usage, allElementsToDelete) || isInside(usage, validOverriding);
};
}
@Nullable
@Override
public Collection<? extends PsiElement> getElementsToSearch(
@NotNull PsiElement element,
@Nullable Module module,
@NotNull Collection<PsiElement> allElementsToDelete) {
Project project = element.getProject();
if (element instanceof PsiPackage && module != null) {
final PsiDirectory[] directories =
((PsiPackage) element).getDirectories(module.getModuleScope());
if (directories.length == 0) return null;
return Arrays.asList(directories);
} else if (element instanceof PsiMethod) {
final PsiMethod[] methods =
SuperMethodWarningUtil.checkSuperMethods(
(PsiMethod) element,
RefactoringBundle.message("to.delete.with.usage.search"),
allElementsToDelete);
if (methods.length == 0) return null;
final ArrayList<PsiMethod> psiMethods = new ArrayList<>(Arrays.asList(methods));
psiMethods.add((PsiMethod) element);
return psiMethods;
} else if (element instanceof PsiParameter
&& ((PsiParameter) element).getDeclarationScope() instanceof PsiMethod) {
PsiMethod method = (PsiMethod) ((PsiParameter) element).getDeclarationScope();
final Set<PsiParameter> parametersToDelete = new HashSet<>();
parametersToDelete.add((PsiParameter) element);
final int parameterIndex =
method.getParameterList().getParameterIndex((PsiParameter) element);
final List<PsiMethod> superMethods =
new ArrayList<>(Arrays.asList(method.findDeepestSuperMethods()));
if (superMethods.isEmpty()) {
superMethods.add(method);
}
for (PsiMethod superMethod : superMethods) {
parametersToDelete.add(superMethod.getParameterList().getParameters()[parameterIndex]);
OverridingMethodsSearch.search(superMethod)
.forEach(
overrider -> {
parametersToDelete.add(
overrider.getParameterList().getParameters()[parameterIndex]);
return true;
});
}
if (parametersToDelete.size() > 1 && !ApplicationManager.getApplication().isUnitTestMode()) {
String message =
RefactoringBundle.message(
"0.is.a.part.of.method.hierarchy.do.you.want.to.delete.multiple.parameters",
UsageViewUtil.getLongName(method));
int result =
Messages.showYesNoCancelDialog(
project, message, SafeDeleteHandler.REFACTORING_NAME, Messages.getQuestionIcon());
if (result == Messages.CANCEL) return null;
if (result == Messages.NO) return Collections.singletonList(element);
}
return parametersToDelete;
} else if (element instanceof PsiTypeParameter) {
final PsiTypeParameterListOwner owner = ((PsiTypeParameter) element).getOwner();
if (owner instanceof PsiMethod && !owner.hasModifierProperty(PsiModifier.STATIC)) {
final PsiTypeParameterList typeParameterList = owner.getTypeParameterList();
if (typeParameterList != null) {
final int index = typeParameterList.getTypeParameterIndex((PsiTypeParameter) element);
if (index >= 0) {
final ArrayList<PsiTypeParameter> overriders = new ArrayList<>();
overriders.add((PsiTypeParameter) element);
OverridingMethodsSearch.search((PsiMethod) owner)
.forEach(
overrider -> {
final PsiTypeParameter[] typeParameters = overrider.getTypeParameters();
if (index < typeParameters.length) {
overriders.add(typeParameters[index]);
}
return true;
});
if (overriders.size() > 1) {
String message =
RefactoringBundle.message(
"0.is.a.part.of.method.hierarchy.do.you.want.to.delete.multiple.type.parameters",
UsageViewUtil.getLongName(owner));
int result =
ApplicationManager.getApplication().isUnitTestMode()
? Messages.YES
: Messages.showYesNoCancelDialog(
project,
message,
SafeDeleteHandler.REFACTORING_NAME,
Messages.getQuestionIcon());
if (result == Messages.CANCEL) return null;
if (result == Messages.YES) return overriders;
}
}
}
}
}
return Collections.singletonList(element);
}
private static boolean isInside(PsiElement place, PsiElement[] ancestors) {
return isInside(place, Arrays.asList(ancestors));
}