unknown class get all unresolved reference fixes (IDEA-192090)

java/java-analysis-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightUtil.java

@@ -2004,7 +2004,13 @@ public class HighlightUtil extends HighlightUtilBase {
       if (aClass == null) {
         String canonicalText = type.getCanonicalText();
         String description = JavaErrorMessages.message("unknown.class", canonicalText);
-        return HighlightInfo.newHighlightInfo(HighlightInfoType.ERROR).range(typeElement).descriptionAndTooltip(description).create();
+        HighlightInfo info =
+          HighlightInfo.newHighlightInfo(HighlightInfoType.ERROR).range(typeElement).descriptionAndTooltip(description).create();
+        PsiJavaCodeReferenceElement referenceElement = typeElement.getInnermostComponentReferenceElement();
+        if (referenceElement != null) {
+          UnresolvedReferenceQuickFixProvider.registerReferenceFixes(referenceElement, new QuickFixActionRegistrarImpl(info));
+        }
+        return info;
       }
     }
 

java/java-impl/src/com/intellij/codeInsight/daemon/impl/quickfix/CreateClassFromUsageBaseFix.java

@@ -105,8 +105,13 @@ public abstract class CreateClassFromUsageBaseFix extends BaseIntentionAction {
   public boolean isAvailable(@NotNull final Project project, final Editor editor, final PsiFile file) {
     final PsiJavaCodeReferenceElement element = getRefElement();
     if (element == null ||
-        !element.getManager().isInProject(element) ||
-        CreateFromUsageUtils.isValidReference(element, true)) return false;
+        !element.getManager().isInProject(element)) {
+      return false;
+    }
+    JavaResolveResult[] results = element.multiResolve(true);
+    if (results.length > 0 && results[0].getElement() instanceof PsiClass) {
+      return false;
+    }
     final String refName = element.getReferenceName();
     if (refName == null || !checkClassName(refName)) return false;
     PsiElement nameElement = element.getReferenceNameElement();

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/createClassFromUsage/afterSameNamedField.java

@@ -0,0 +1,7 @@
+// "Create class 'Abc'" "true"
+public class Test {
+  Abc Abc;
+}
+
+public class Abc {
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/createClassFromUsage/beforeSameNamedField.java

@@ -0,0 +1,4 @@
+// "Create class 'Abc'" "true"
+public class Test {
+  <caret>Abc Abc;
+}