skip non code usages during check for writable on safe delete (IDEA-97458)

platform/lang-impl/src/com/intellij/refactoring/BaseRefactoringProcessor.java

@@ -282,10 +282,15 @@ public abstract class BaseRefactoringProcessor {
     showUsageView(viewDescriptor, factory, usages);
   }
 
+  protected boolean skipNonCodeUsages() {
+    return false;
+  }
+  
   private boolean ensureElementsWritable(@NotNull final UsageInfo[] usages, final UsageViewDescriptor descriptor) {
     Set<PsiElement> elements = new THashSet<PsiElement>();
     for (UsageInfo usage : usages) {
       assert usage != null: "Found null element in usages array";
+      if (skipNonCodeUsages() && usage.isNonCodeUsage()) continue;
       PsiElement element = usage.getElement();
       if (element != null) elements.add(element);
     }

platform/lang-impl/src/com/intellij/refactoring/safeDelete/SafeDeleteProcessor.java

@@ -472,4 +472,9 @@ public class SafeDeleteProcessor extends BaseRefactoringProcessor {
   public void setSearchNonJava(boolean searchNonJava) {
     mySearchNonJava = searchNonJava;
   }
+
+  @Override
+  protected boolean skipNonCodeUsages() {
+    return true;
+  }
 }