[kotlin] k2: Make "Make open" quick fix work from Java code

^KTIJ-26318

GitOrigin-RevId: 25d67416b5ab5560080a9496cae9589b07c1b6dd

plugins/kotlin/code-insight/fixes-k2/tests/test/org/jetbrains/kotlin/idea/k2/codeinsight/fixes/HighLevelQuickFixMultiFileTestGenerated.java

@@ -980,6 +980,11 @@ public abstract class HighLevelQuickFixMultiFileTestGenerated extends AbstractHi
             KotlinTestUtils.runTest(this::doTestWithExtraFile, this, testDataFilePath);
         }
 
+        @TestMetadata("extendsFromJava.before.Main.java")
+        public void testExtendsFromJava() throws Exception {
+            runTest("../../../idea/tests/testData/quickfix/modifiers/addOpenToClassDeclaration/extendsFromJava.before.Main.java");
+        }
+
         @TestMetadata("finalJavaSupertype.before.Main.kt")
         public void testFinalJavaSupertype() throws Exception {
             runTest("../../../idea/tests/testData/quickfix/modifiers/addOpenToClassDeclaration/finalJavaSupertype.before.Main.kt");

plugins/kotlin/code-insight/kotlin.code-insight.k2/src/org/jetbrains/kotlin/idea/k2/codeinsight/quickFixes/createFromUsage/K2ElementActionsFactory.kt

@@ -4,18 +4,35 @@ package org.jetbrains.kotlin.idea.k2.codeinsight.quickFixes.createFromUsage
 import com.intellij.codeInsight.intention.IntentionAction
 import com.intellij.codeInsight.intention.impl.BaseIntentionAction
 import com.intellij.lang.jvm.JvmClass
+import com.intellij.lang.jvm.JvmModifier
+import com.intellij.lang.jvm.JvmModifiersOwner
+import com.intellij.lang.jvm.actions.ChangeModifierRequest
 import com.intellij.lang.jvm.actions.CreateMethodRequest
 import com.intellij.lang.jvm.actions.JvmElementActionsFactory
 import com.intellij.psi.PsiElement
 import com.intellij.psi.createSmartPointer
+import org.jetbrains.kotlin.asJava.unwrapped
 import org.jetbrains.kotlin.idea.base.resources.KotlinBundle
 import org.jetbrains.kotlin.idea.k2.codeinsight.quickFixes.createFromUsage.K2CreateFromUsageUtil.toKtClassOrFile
+import org.jetbrains.kotlin.idea.quickfix.AddModifierFix
 import org.jetbrains.kotlin.idea.refactoring.isAbstract
 import org.jetbrains.kotlin.idea.refactoring.isInterfaceClass
+import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.KtClassOrObject
 import org.jetbrains.kotlin.psi.KtElement
+import org.jetbrains.kotlin.psi.KtModifierListOwner
 
 class K2ElementActionsFactory : JvmElementActionsFactory() {
+    override fun createChangeModifierActions(target: JvmModifiersOwner, request: ChangeModifierRequest): List<IntentionAction> {
+        val kModifierOwner = target.sourceElement?.unwrapped as? KtModifierListOwner  ?: return emptyList()
+
+        if (request.modifier != JvmModifier.FINAL || request.shouldBePresent()) return emptyList()
+
+        return listOf(
+            AddModifierFix(kModifierOwner, KtTokens.OPEN_KEYWORD)
+        )
+    }
+
     override fun createAddMethodActions(targetClass: JvmClass, request: CreateMethodRequest): List<IntentionAction> {
         if (targetClass is PsiElement && !BaseIntentionAction.canModify(targetClass)) return emptyList()
         var container = targetClass.toKtClassOrFile() ?: return emptyList()

plugins/kotlin/idea/tests/test/org/jetbrains/kotlin/idea/quickfix/QuickFixMultiFileTestGenerated.java

@@ -2156,6 +2156,11 @@ public abstract class QuickFixMultiFileTestGenerated extends AbstractQuickFixMul
                 KotlinTestUtils.runTest(this::doTestWithExtraFile, this, testDataFilePath);
             }
 
+            @TestMetadata("extendsFromJava.before.Main.java")
+            public void testExtendsFromJava() throws Exception {
+                runTest("testData/quickfix/modifiers/addOpenToClassDeclaration/extendsFromJava.before.Main.java");
+            }
+
             @TestMetadata("finalJavaSupertype.before.Main.kt")
             public void testFinalJavaSupertype() throws Exception {
                 runTest("testData/quickfix/modifiers/addOpenToClassDeclaration/finalJavaSupertype.before.Main.kt");

plugins/kotlin/idea/tests/testData/quickfix/modifiers/addOpenToClassDeclaration/extendsFromJava.after.Dependency.kt

@@ -0,0 +1 @@
+open class BaseClass

plugins/kotlin/idea/tests/testData/quickfix/modifiers/addOpenToClassDeclaration/extendsFromJava.after.java

@@ -0,0 +1,2 @@
+// "Make 'BaseClass' 'open'" "true"
+class ChildClass extends BaseClass<selection><caret></selection> {}

plugins/kotlin/idea/tests/testData/quickfix/modifiers/addOpenToClassDeclaration/extendsFromJava.before.Dependency.kt

@@ -0,0 +1 @@
+class BaseClass

plugins/kotlin/idea/tests/testData/quickfix/modifiers/addOpenToClassDeclaration/extendsFromJava.before.Main.java

@@ -0,0 +1,2 @@
+// "Make 'BaseClass' 'open'" "true"
+class ChildClass extends BaseClass<caret> {}