@Nullable
public UsageInfo[] preprocessUsages(final Project project, final UsageInfo[] usages) {
final ArrayList<UsageInfo> result = new ArrayList<>();
final ArrayList<UsageInfo> overridingMethods = new ArrayList<>();
final ArrayList<SafeDeleteParameterCallHierarchyUsageInfo> delegatingParams = new ArrayList<>();
final ArrayList<SafeDeleteMethodCalleeUsageInfo> calleesSafeToDelete = new ArrayList<>();
for (UsageInfo usage : usages) {
if (usage.isNonCodeUsage) {
result.add(usage);
} else if (usage instanceof SafeDeleteMethodCalleeUsageInfo) {
calleesSafeToDelete.add((SafeDeleteMethodCalleeUsageInfo) usage);
} else if (usage instanceof SafeDeleteOverridingMethodUsageInfo) {
overridingMethods.add(usage);
} else if (usage instanceof SafeDeleteParameterCallHierarchyUsageInfo) {
delegatingParams.add((SafeDeleteParameterCallHierarchyUsageInfo) usage);
} else if (usage instanceof SafeDeleteAnnotation) {
result.add(
new SafeDeleteAnnotation(
(PsiAnnotation) usage.getElement(),
((SafeDeleteAnnotation) usage).getReferencedElement(),
true));
} else {
result.add(usage);
}
}
if (!overridingMethods.isEmpty()) {
if (ApplicationManager.getApplication().isUnitTestMode()) {
result.addAll(overridingMethods);
} else {
OverridingMethodsDialog dialog = new OverridingMethodsDialog(project, overridingMethods);
if (!dialog.showAndGet()) {
return null;
}
final ArrayList<UsageInfo> selected = dialog.getSelected();
final Set<UsageInfo> unselected = new HashSet<>(overridingMethods);
unselected.removeAll(selected);
if (!unselected.isEmpty()) {
final List<PsiMethod> unselectedMethods =
ContainerUtil.map(
unselected,
info -> ((SafeDeleteOverridingMethodUsageInfo) info).getOverridingMethod());
for (Iterator<UsageInfo> iterator = result.iterator(); iterator.hasNext(); ) {
final UsageInfo info = iterator.next();
if (info instanceof SafeDeleteOverrideAnnotation
&& !allSuperMethodsSelectedToDelete(
unselectedMethods, ((SafeDeleteOverrideAnnotation) info).getMethod())) {
iterator.remove();
}
}
}
result.addAll(selected);
}
}
if (!delegatingParams.isEmpty()) {
final SafeDeleteParameterCallHierarchyUsageInfo parameterHierarchyUsageInfo =
delegatingParams.get(0);
if (ApplicationManager.getApplication().isUnitTestMode()) {
result.addAll(delegatingParams);
} else {
final PsiMethod method = parameterHierarchyUsageInfo.getCalledMethod();
final PsiParameter parameter = parameterHierarchyUsageInfo.getReferencedElement();
final int parameterIndex = method.getParameterList().getParameterIndex(parameter);
final JavaCallerChooser chooser =
new SafeDeleteJavaCallerChooser(method, project, result) {
@Override
protected ArrayList<SafeDeleteParameterCallHierarchyUsageInfo> getTopLevelItems() {
return delegatingParams;
}
@Override
protected int getParameterIdx() {
return parameterIndex;
}
};
TreeUtil.expand(chooser.getTree(), 2);
if (!chooser.showAndGet()) {
return null;
}
}
}
if (!calleesSafeToDelete.isEmpty()) {
if (ApplicationManager.getApplication().isUnitTestMode()) {
result.addAll(calleesSafeToDelete);
} else {
final PsiMethod method = calleesSafeToDelete.get(0).getCallerMethod();
final ArrayList<UsageInfo> list = new ArrayList<>();
JavaCallerChooser chooser =
new SafeDeleteJavaCalleeChooser(method, project, list) {
@Override
protected ArrayList<SafeDeleteMethodCalleeUsageInfo> getTopLevelItems() {
return calleesSafeToDelete;
}
};
TreeUtil.expand(chooser.getTree(), 2);
if (!chooser.showAndGet()) {
return null;
}
result.addAll(list);
final List<PsiElement> methodsToDelete = new ArrayList<>();
for (UsageInfo info : list) {
methodsToDelete.add(info.getElement());
}
methodsToDelete.add(method);
final Condition<PsiElement> insideDeletedCondition =
getUsageInsideDeletedFilter(
methodsToDelete.toArray(new PsiElement[methodsToDelete.size()]));
for (UsageInfo info : list) {
SafeDeleteProcessor.addNonCodeUsages(
info.getElement(),
result,
insideDeletedCondition,
JavaRefactoringSettings.getInstance().RENAME_SEARCH_FOR_TEXT_FOR_METHOD,
JavaRefactoringSettings.getInstance().RENAME_SEARCH_IN_COMMENTS_FOR_METHOD);
}
}
}
return result.toArray(new UsageInfo[result.size()]);
}
private static Set<PsiMethod> validateOverridingMethods(
PsiMethod originalMethod,
final Collection<PsiReference> originalReferences,
Collection<PsiMethod> overridingMethods,
HashMap<PsiMethod, Collection<PsiReference>> methodToReferences,
List<UsageInfo> usages,
final PsiElement[] allElementsToDelete) {
Set<PsiMethod> validOverriding = new LinkedHashSet<>(overridingMethods);
Set<PsiMethod> multipleInterfaceImplementations = new HashSet<>();
boolean anyNewBadRefs;
do {
anyNewBadRefs = false;
for (PsiMethod overridingMethod : overridingMethods) {
if (validOverriding.contains(overridingMethod)) {
final Collection<PsiReference> overridingReferences =
methodToReferences.get(overridingMethod);
boolean anyOverridingRefs = false;
for (final PsiReference overridingReference : overridingReferences) {
final PsiElement element = overridingReference.getElement();
if (!isInside(element, allElementsToDelete) && !isInside(element, validOverriding)) {
anyOverridingRefs = true;
break;
}
}
if (!anyOverridingRefs
&& isMultipleInterfacesImplementation(
overridingMethod, originalMethod, allElementsToDelete)) {
anyOverridingRefs = true;
multipleInterfaceImplementations.add(overridingMethod);
}
if (anyOverridingRefs) {
validOverriding.remove(overridingMethod);
anyNewBadRefs = true;
for (PsiReference reference : originalReferences) {
final PsiElement element = reference.getElement();
if (!isInside(element, allElementsToDelete)
&& !isInside(element, overridingMethods)) {
usages.add(
new SafeDeleteReferenceJavaDeleteUsageInfo(element, originalMethod, false));
validOverriding.clear();
}
}
}
}
}
} while (anyNewBadRefs && !validOverriding.isEmpty());
for (PsiMethod method : validOverriding) {
if (method != originalMethod) {
usages.add(new SafeDeleteOverridingMethodUsageInfo(method, originalMethod));
}
}
for (PsiMethod method : overridingMethods) {
if (!validOverriding.contains(method)
&& !multipleInterfaceImplementations.contains(method)
&& canBePrivate(
method, methodToReferences.get(method), validOverriding, allElementsToDelete)) {
usages.add(new SafeDeletePrivatizeMethod(method, originalMethod));
} else {
usages.add(new SafeDeleteOverrideAnnotation(method, originalMethod));
}
}
return 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);
}