show location package in chained call items (IDEA-58766)

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

@@ -19,11 +19,13 @@ import com.intellij.codeInsight.lookup.*;
 import com.intellij.featureStatistics.FeatureUsageTracker;
 import com.intellij.openapi.editor.Document;
 import com.intellij.openapi.util.ClassConditionKey;
+import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.psi.*;
 import com.intellij.psi.codeStyle.CodeStyleSettingsManager;
 import com.intellij.psi.util.PsiTreeUtil;
 import gnu.trove.THashSet;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.Set;
 
@@ -65,11 +67,16 @@ public class JavaChainLookupElement extends LookupElementDecorator<LookupElement
   }
 
   private String maybeAddParentheses(String s) {
+    return getQualifierObject() instanceof PsiMethod ? s + "()" : s;
+  }
+
+  @Nullable
+  private Object getQualifierObject() {
     Object qObject = myQualifier.getObject();
     if (qObject instanceof ResolveResult) {
       qObject = ((ResolveResult)qObject).getElement();
     }
-    return qObject instanceof PsiMethod ? s + "()" : s;
+    return qObject;
   }
 
   @Override
@@ -80,6 +87,10 @@ public class JavaChainLookupElement extends LookupElementDecorator<LookupElement
     String name = maybeAddParentheses(qualifierPresentation.getItemText());
     final String qualifierText = myQualifier.as(CastingLookupElementDecorator.CLASS_CONDITION_KEY) != null ? "(" + name + ")" : name;
     presentation.setItemText(qualifierText + "." + presentation.getItemText());
+
+    if (getQualifierObject() instanceof PsiClass) {
+      presentation.setTailText(StringUtil.notNullize(presentation.getTailText()) + qualifierPresentation.getTailText());
+    }
   }
 
   @Override

platform/lang-api/src/com/intellij/codeInsight/lookup/LookupElementPresentation.java

@@ -167,4 +167,10 @@ public class LookupElementPresentation {
   public void setTypeGrayed(boolean typeGrayed) {
     myTypeGrayed = typeGrayed;
   }
+
+  public static LookupElementPresentation renderElement(LookupElement element) {
+    LookupElementPresentation presentation = new LookupElementPresentation();
+    element.renderElement(presentation);
+    return presentation;
+  }
 }

plugins/groovy/test/org/jetbrains/plugins/groovy/completion/GroovyCompletionTest.groovy

@@ -1114,6 +1114,12 @@ public class KeyVO {
     myFixture.configureByText 'a.groovy', 'Util.<caret>'
     myFixture.completeBasic()
     assert myFixture.lookupElementStrings[0..1] == ['Util.bar', 'Util.foo']
+
+    def presentation = LookupElementPresentation.renderElement(myFixture.lookupElements[0])
+    assert 'Util.bar' == presentation.itemText
+    assert '() (bar)' == presentation.tailText
+    assert !presentation.tailGrayed
+
     myFixture.type 'f\n'
     myFixture.checkResult '''import foo.Util