KT-12328 Qualified function name inserted when typing before "if"

#KT-12328 Fixed

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/handlers/KotlinCallableInsertHandler.kt

@@ -37,7 +37,8 @@ abstract class KotlinCallableInsertHandler(val callType: CallType<*>) : BaseDecl
     }
 
     private fun addImport(context : InsertionContext, item : LookupElement) {
-        PsiDocumentManager.getInstance(context.project).commitAllDocuments()
+        val psiDocumentManager = PsiDocumentManager.getInstance(context.project)
+        psiDocumentManager.commitAllDocuments()
 
         val file = context.file
         val o = item.`object`
@@ -50,10 +51,15 @@ abstract class KotlinCallableInsertHandler(val callType: CallType<*>) : BaseDecl
             }
             else if (callType == CallType.DEFAULT) {
                 val fqName = descriptor.importableFqName ?: return
-                context.document.replaceString(context.startOffset, context.tailOffset, fqName.render())
+                context.document.replaceString(context.startOffset, context.tailOffset, fqName.render() + " ") // insert space after for correct parsing
 
-                PsiDocumentManager.getInstance(context.project).commitAllDocuments()
+                psiDocumentManager.commitAllDocuments()
-                ShortenReferences.DEFAULT.process(file, context.startOffset, context.tailOffset)
+
+                ShortenReferences.DEFAULT.process(file, context.startOffset, context.tailOffset - 1)
+
+                psiDocumentManager.doPostponedOperationsAndUnblockDocument(context.document)
+
+                context.document.deleteString(context.tailOffset - 1, context.tailOffset) // delete space
             }
         }
     }

idea/idea-completion/testData/handlers/basic/KT12328.kt

@@ -0,0 +1,5 @@
+fun f() {
+    val v = <caret>if (x) a else b
+}
+
+// ELEMENT: emptyList

idea/idea-completion/testData/handlers/basic/KT12328.kt.after

@@ -0,0 +1,5 @@
+fun f() {
+    val v = emptyList<<caret>>()if (x) a else b
+}
+
+// ELEMENT: emptyList

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/handlers/BasicCompletionHandlerTestGenerated.java

@@ -137,6 +137,12 @@ public class BasicCompletionHandlerTestGenerated extends AbstractBasicCompletion
         doTest(fileName);
     }
 
+    @TestMetadata("KT12328.kt")
+    public void testKT12328() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/handlers/basic/KT12328.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("NestedTypeArg.kt")
     public void testNestedTypeArg() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/handlers/basic/NestedTypeArg.kt");