Disable extract actions on non-JVM classes #KT-28476 Fixed

idea/src/org/jetbrains/kotlin/idea/refactoring/introduce/extractClass/KotlinExtractInterfaceHandler.kt

@@ -25,6 +25,8 @@ object KotlinExtractInterfaceHandler : KotlinExtractSuperHandlerBase(true) {
     val REFACTORING_NAME = "Extract Interface"
 
     override fun getErrorMessage(klass: KtClassOrObject): String? {
+        val superMessage = super.getErrorMessage(klass)
+        if (superMessage != null) return superMessage
         if (klass is KtClass && klass.isAnnotation()) return "Interface cannot be extracted from an annotation class"
         return null
     }

idea/src/org/jetbrains/kotlin/idea/refactoring/introduce/extractClass/KotlinExtractSuperHandlerBase.kt

@@ -30,11 +30,13 @@ import com.intellij.refactoring.RefactoringBundle
 import com.intellij.refactoring.extractSuperclass.ExtractSuperClassUtil
 import com.intellij.refactoring.lang.ElementsHandler
 import com.intellij.refactoring.util.CommonRefactoringUtil
+import org.jetbrains.kotlin.asJava.toLightClass
 import org.jetbrains.kotlin.idea.refactoring.SeparateFileWrapper
 import org.jetbrains.kotlin.idea.refactoring.chooseContainerElementIfNecessary
 import org.jetbrains.kotlin.idea.refactoring.getExtractionContainers
 import org.jetbrains.kotlin.idea.refactoring.introduce.extractClass.ui.KotlinExtractSuperDialogBase
 import org.jetbrains.kotlin.idea.refactoring.showWithTransaction
+import org.jetbrains.kotlin.idea.util.isExpectDeclaration
 import org.jetbrains.kotlin.psi.KtClassOrObject
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.psi.psiUtil.getNonStrictParentOfType
@@ -108,7 +110,11 @@ abstract class KotlinExtractSuperHandlerBase(private val isExtractInterface: Boo
         return ExtractSuperClassUtil.showConflicts(dialog, conflicts, originalClass.project)
     }
 
-    internal abstract fun getErrorMessage(klass: KtClassOrObject): String?
+    internal open fun getErrorMessage(klass: KtClassOrObject): String? = when {
+        klass.isExpectDeclaration() -> "Extraction from expect class is not yet supported"
+        klass.toLightClass() == null -> "Extraction from non-JVM class is not yet supported"
+        else -> null
+    }
 
     protected abstract fun createDialog(klass: KtClassOrObject, targetParent: PsiElement): KotlinExtractSuperDialogBase
 }

idea/src/org/jetbrains/kotlin/idea/refactoring/introduce/extractClass/KotlinExtractSuperclassHandler.kt

@@ -26,6 +26,8 @@ object KotlinExtractSuperclassHandler : KotlinExtractSuperHandlerBase(false) {
     val REFACTORING_NAME = "Extract Superclass"
 
     override fun getErrorMessage(klass: KtClassOrObject): String? {
+        val superMessage = super.getErrorMessage(klass)
+        if (superMessage != null) return superMessage
         if (klass is KtClass) {
             if (klass.isInterface()) return RefactoringBundle.message("superclass.cannot.be.extracted.from.an.interface")
             if (klass.isEnum()) return RefactoringBundle.message("superclass.cannot.be.extracted.from.an.enum")