IDEA-177292 No "new" keyword completion after dot

java/java-impl/src/com/intellij/codeInsight/completion/JavaKeywordCompletion.java

@@ -457,6 +457,29 @@ public class JavaKeywordCompletion {
         addKeyword(createKeyword(PsiKeyword.FALSE));
       }
     }
+
+    if (isQualifiedNewContext()) {
+      addKeyword(createKeyword(PsiKeyword.NEW));
+    }
+  }
+
+  private boolean isQualifiedNewContext() {
+    if (myPosition.getParent() instanceof PsiReferenceExpression) {
+      PsiExpression qualifier = ((PsiReferenceExpression)myPosition.getParent()).getQualifierExpression();
+      PsiClass qualifierClass = PsiUtil.resolveClassInClassTypeOnly(qualifier == null ? null : qualifier.getType());
+      if (qualifierClass != null &&
+          ContainerUtil.exists(qualifierClass.getAllInnerClasses(), inner -> canBeCreatedInQualifiedNew(qualifierClass, inner))) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  private boolean canBeCreatedInQualifiedNew(PsiClass outer, PsiClass inner) {
+    PsiMethod[] constructors = inner.getConstructors();
+    return !inner.hasModifierProperty(PsiModifier.STATIC) &&
+           PsiUtil.isAccessible(inner, myPosition, outer) &&
+           (constructors.length == 0 || ContainerUtil.exists(constructors, c -> PsiUtil.isAccessible(c, myPosition, outer)));
   }
 
   private void addFileHeaderKeywords() {

java/java-tests/testData/codeInsight/completion/keywords/qualifiedNew.java

@@ -0,0 +1,10 @@
+public class Test {
+  public Inner getInner() {
+    return this.<caret>
+  }
+
+  public class Inner {
+    public void foo() {
+    }
+  }
+}

java/java-tests/testSrc/com/intellij/java/codeInsight/completion/KeywordCompletionTest.java

@@ -153,6 +153,7 @@ public class KeywordCompletionTest extends LightCompletionTestCase {
   public void testNoStatementInForLoopCondition() { doTest(0, "synchronized", "if"); }
   public void testNoStatementInForLoopUpdate() { doTest(0, "synchronized", "if"); }
   public void testPrivateInJava9Interface() { setLanguageLevel(LanguageLevel.JDK_1_9); doTest(); }
+  public void testQualifiedNew() { doTest(1, "new"); }
 
   public void testOverwriteCatch() {
     configureByTestName();