KT-4000 Class name completion is not available inside call expressions

#KT-4000 Fixed

idea/src/org/jetbrains/jet/plugin/completion/CompletionSession.java

@@ -207,20 +207,9 @@ public class CompletionSession {
         PsiElement element = getPosition();
         if (getPosition().getNode().getElementType() == JetTokens.IDENTIFIER) {
             if (element.getParent() instanceof JetSimpleNameExpression) {
-                JetSimpleNameExpression nameExpression = (JetSimpleNameExpression)element.getParent();
+                if (!JetPsiUtil.isSelectorInQualified((JetSimpleNameExpression) element.getParent())) {
-
+                    return true;
-                // Top level completion should be executed for simple name which is not in qualified expression
-                if (PsiTreeUtil.getParentOfType(nameExpression, JetQualifiedExpression.class) != null) {
-                    return false;
                 }
-
-                // Don't call top level completion in qualified named position of user type
-                PsiElement parent = nameExpression.getParent();
-                if (parent instanceof JetUserType && ((JetUserType) parent).getQualifier() != null) {
-                    return false;
-                }
-
-                return true;
             }
         }
 

idea/testData/completion/basic/common/TopLevelClassCompletionInQualifiedCall.kt

@@ -0,0 +1,13 @@
+class Test {
+    fun foo(a: Collection<String>) {
+
+    }
+}
+
+fun test() {
+    val t = Test()
+    t.foo(Array<caret>)
+}
+
+// EXIST: ArrayList
+// INVOCATION_COUNT: 2

idea/tests/org/jetbrains/jet/completion/JetBasicJSCompletionTestGenerated.java

@@ -354,6 +354,11 @@ public class JetBasicJSCompletionTestGenerated extends AbstractJetJSCompletionTe
             doTest("idea/testData/completion/basic/common/SubpackageInFun.kt");
         }
         
+        @TestMetadata("TopLevelClassCompletionInQualifiedCall.kt")
+        public void testTopLevelClassCompletionInQualifiedCall() throws Exception {
+            doTest("idea/testData/completion/basic/common/TopLevelClassCompletionInQualifiedCall.kt");
+        }
+        
         @TestMetadata("VariableClassName.kt")
         public void testVariableClassName() throws Exception {
             doTest("idea/testData/completion/basic/common/VariableClassName.kt");

idea/tests/org/jetbrains/jet/completion/JetBasicJavaCompletionTestGenerated.java

@@ -354,6 +354,11 @@ public class JetBasicJavaCompletionTestGenerated extends AbstractJavaCompletionT
             doTest("idea/testData/completion/basic/common/SubpackageInFun.kt");
         }
         
+        @TestMetadata("TopLevelClassCompletionInQualifiedCall.kt")
+        public void testTopLevelClassCompletionInQualifiedCall() throws Exception {
+            doTest("idea/testData/completion/basic/common/TopLevelClassCompletionInQualifiedCall.kt");
+        }
+        
         @TestMetadata("VariableClassName.kt")
         public void testVariableClassName() throws Exception {
             doTest("idea/testData/completion/basic/common/VariableClassName.kt");