@Override
public Collection<String> findConflicts(
PsiElement element, PsiElement[] elements, UsageInfo[] usages) {
String methodRefFound = null;
if (!ApplicationManager.getApplication().isUnitTestMode()
&& (element instanceof PsiMethod || element instanceof PsiParameter)) {
for (UsageInfo usage : usages) {
final PsiElement refElement = usage.getElement();
if (refElement instanceof PsiMethodReferenceExpression) {
methodRefFound = RefactoringBundle.message("expand.method.reference.warning");
break;
}
}
}
if (methodRefFound != null) {
Collection<String> result = new ArrayList<>();
result.add(methodRefFound);
final Collection<String> conflicts = super.findConflicts(element, elements, usages);
if (conflicts != null) {
result.addAll(conflicts);
}
return result;
}
return super.findConflicts(element, elements, usages);
}
private static void findTypeParameterExternalUsages(
final PsiTypeParameter typeParameter, final Collection<UsageInfo> usages) {
PsiTypeParameterListOwner owner = typeParameter.getOwner();
if (owner != null) {
final PsiTypeParameterList parameterList = owner.getTypeParameterList();
if (parameterList != null) {
final int paramsCount = parameterList.getTypeParameters().length;
final int index = parameterList.getTypeParameterIndex(typeParameter);
ReferencesSearch.search(owner)
.forEach(
reference -> {
if (reference instanceof PsiJavaCodeReferenceElement) {
final PsiReferenceParameterList parameterList1 =
((PsiJavaCodeReferenceElement) reference).getParameterList();
if (parameterList1 != null) {
PsiTypeElement[] typeArgs = parameterList1.getTypeParameterElements();
if (typeArgs.length > index) {
if (typeArgs.length == 1
&& paramsCount > 1
&& typeArgs[0].getType() instanceof PsiDiamondType) return true;
usages.add(
new SafeDeleteReferenceJavaDeleteUsageInfo(
typeArgs[index], typeParameter, true));
}
}
}
return true;
});
}
}
}
private void captureUsagesExpandState(TreePath pathFrom, final Collection<UsageState> states) {
if (!myTree.isExpanded(pathFrom)) {
return;
}
final DefaultMutableTreeNode node = (DefaultMutableTreeNode) pathFrom.getLastPathComponent();
final int childCount = node.getChildCount();
for (int idx = 0; idx < childCount; idx++) {
final TreeNode child = node.getChildAt(idx);
if (child instanceof UsageNode) {
final Usage usage = ((UsageNode) child).getUsage();
states.add(
new UsageState(
usage,
myTree.getSelectionModel().isPathSelected(pathFrom.pathByAddingChild(child))));
} else {
captureUsagesExpandState(pathFrom.pathByAddingChild(child), states);
}
}
}