Added parameters and type text (grayed) to "::xxx" items in smart completion

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/smart/SmartCompletion.kt

@@ -324,16 +324,13 @@ class SmartCompletion(
             if (matchedExpectedInfos.isEmpty()) return null
 
             var lookupElement = lookupElementFactory.createLookupElement(descriptor, useReceiverTypes = false, parametersAndTypeGrayed = true)
-            val text = "::" + (if (descriptor is ConstructorDescriptor) descriptor.getContainingDeclaration().getName() else descriptor.getName())
             lookupElement = object: LookupElementDecorator<LookupElement>(lookupElement) {
-                override fun getLookupString() = text
-                override fun getAllLookupStrings() = setOf(text)
+                override fun getLookupString() = "::" + delegate.lookupString
+                override fun getAllLookupStrings() = setOf(lookupString)
 
                 override fun renderElement(presentation: LookupElementPresentation) {
                     super.renderElement(presentation)
-                    presentation.setItemText(text)
-                    presentation.clearTail()
-                    presentation.setTypeText(null)
+                    presentation.itemText = "::" + presentation.itemText
                 }
 
                 override fun handleInsert(context: InsertionContext) {

idea/idea-completion/testData/smart/callableReference/NoQualifier1.kt

@@ -7,7 +7,7 @@ fun bar() {
 fun f1(){}
 fun f2(i: Int){}
 
-// EXIST: { lookupString:"::f1", itemText:"::f1", tailText:null, typeText:null }
+// EXIST: { lookupString: "::f1", itemText: "::f1", tailText: "() (<root>)", typeText: "Unit" }
 // ABSENT: ::f2
 // ABSENT: ::Unit
 // ABSENT: ::Nothing

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/ExpectedCompletionUtils.kt

@@ -64,9 +64,7 @@ public object ExpectedCompletionUtils {
                     throw RuntimeException("Invalid json property '$key'")
                 }
                 val value = entry.value
-                if (value !is JsonNull) {
-                    map.put(key, value.asString)
-                }
+                map.put(key, if (value !is JsonNull) value.asString else null)
             }
         }