More refactoring

idea/src/org/jetbrains/kotlin/idea/quickfix/ChangeFunctionLiteralSignatureFix.kt

@@ -75,11 +75,7 @@ class ChangeFunctionLiteralSignatureFix(
             return Data(element, descriptor, parameterTypes)
         }
 
-        override fun createQuickFix(diagnostic: Diagnostic, quickFixDataFactory: () -> Data?): QuickFixWithDelegateFactory? {
-            return QuickFixWithDelegateFactory {
-                val (functionLiteral, descriptor, parameterTypes) = quickFixDataFactory() ?: return@QuickFixWithDelegateFactory null
-                ChangeFunctionLiteralSignatureFix(functionLiteral, descriptor, parameterTypes)
-            }
-        }
+        override fun createQuickFix(data: Data)
+                = ChangeFunctionLiteralSignatureFix(data.functionLiteral, data.descriptor, data.parameterTypes)
     }
 }

idea/src/org/jetbrains/kotlin/idea/quickfix/ChangeFunctionSignatureFix.kt

@@ -88,12 +88,7 @@ abstract class ChangeFunctionSignatureFix(
             return Data(element, descriptor)
         }
 
-        override fun createQuickFix(diagnostic: Diagnostic, quickFixDataFactory: () -> Data?): QuickFixWithDelegateFactory {
-            return QuickFixWithDelegateFactory {
-                val (callElement, descriptor) = quickFixDataFactory() ?: return@QuickFixWithDelegateFactory null
-                createFix(callElement, callElement, descriptor)
-            }
-        }
+        override fun createQuickFix(data: Data) = createFix(data.callElement, data.callElement, data.descriptor)
 
         private fun createFix(callElement: JetCallElement, context: PsiElement, descriptor: CallableDescriptor): ChangeFunctionSignatureFix? {
             val functionDescriptor = when (descriptor) {

idea/src/org/jetbrains/kotlin/idea/quickfix/KotlinIntentionActionFactoryWithDelegate.kt

@@ -25,16 +25,29 @@ import org.jetbrains.kotlin.idea.caches.resolve.analyze
 import org.jetbrains.kotlin.psi.JetElement
 import org.jetbrains.kotlin.psi.psiUtil.createSmartPointer
 import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
-import org.jetbrains.kotlin.utils.singletonOrEmptyList
 
-abstract class KotlinSingleIntentionActionFactoryWithDelegate<E : JetElement, D : Any> : KotlinIntentionActionFactoryWithDelegate<E, D>() {
-    protected open fun createQuickFix(diagnostic: Diagnostic, quickFixDataFactory: () -> D?): QuickFixWithDelegateFactory? = null
+abstract class KotlinSingleIntentionActionFactoryWithDelegate<E : JetElement, D : Any>(
+        private val isLowPriority: Boolean = false
+) : KotlinIntentionActionFactoryWithDelegate<E, D>() {
+
+    protected abstract fun createQuickFix(data: D): IntentionAction?
 
     protected override final fun createQuickFixes(
             originalElementPointer: SmartPsiElementPointer<E>,
             diagnostic: Diagnostic,
             quickFixDataFactory: () -> D?
-    ): List<QuickFixWithDelegateFactory> = createQuickFix(diagnostic, quickFixDataFactory).singletonOrEmptyList()
+    ): List<QuickFixWithDelegateFactory> {
+        fun createAction(): IntentionAction? {
+            val data = quickFixDataFactory() ?: return null
+            return createQuickFix(data)
+        }
+
+        val delegateFactory = if (isLowPriority)
+            LowPriorityQuickFixWithDelegateFactory(::createAction)
+        else
+            QuickFixWithDelegateFactory(::createAction)
+        return listOf(delegateFactory)
+    }
 }
 
 abstract class KotlinIntentionActionFactoryWithDelegate<E : JetElement, D : Any> : JetIntentionActionsFactory() {
@@ -60,9 +73,8 @@ abstract class KotlinIntentionActionFactoryWithDelegate<E : JetElement, D : Any>
         // Cache data so that it can be shared between quick fixes bound to the same element & diagnostic
         // Cache null values
         var cachedData: Ref<D>? = null
-        val actions: List<QuickFixWithDelegateFactory>
-        try {
-            actions = createQuickFixes(originalElementPointer, diagnostic) factory@ {
+        val actions: List<QuickFixWithDelegateFactory> = try {
+            createQuickFixes(originalElementPointer, diagnostic) factory@ {
                 val element = originalElementPointer.element ?: return@factory null
                 val diagnosticElement = diagnosticElementPointer.element ?: return@factory null
                 if (!diagnosticElement.isValid || !element.isValid) return@factory null

idea/src/org/jetbrains/kotlin/idea/quickfix/createFromUsage/createVariable/CreateParameterFromUsageFactory.kt

@@ -16,10 +16,9 @@
 
 package org.jetbrains.kotlin.idea.quickfix.createFromUsage.createVariable
 
+import com.intellij.codeInsight.intention.IntentionAction
 import org.jetbrains.kotlin.descriptors.FunctionDescriptor
-import org.jetbrains.kotlin.diagnostics.Diagnostic
 import org.jetbrains.kotlin.idea.quickfix.KotlinSingleIntentionActionFactoryWithDelegate
-import org.jetbrains.kotlin.idea.quickfix.QuickFixWithDelegateFactory
 import org.jetbrains.kotlin.idea.refactoring.changeSignature.JetParameterInfo
 import org.jetbrains.kotlin.psi.JetElement
 import org.jetbrains.kotlin.resolve.BindingContext
@@ -31,17 +30,10 @@ data class CreateParameterData<E : JetElement>(
 )
 
 abstract class CreateParameterFromUsageFactory<E : JetElement>: KotlinSingleIntentionActionFactoryWithDelegate<E, CreateParameterData<E>>() {
-    override fun createQuickFix(
-            diagnostic: Diagnostic,
-            quickFixDataFactory: () -> CreateParameterData<E>?
-    ): QuickFixWithDelegateFactory? {
-        return QuickFixWithDelegateFactory {
-            quickFixDataFactory()?.let { data ->
-                CreateParameterFromUsageFix(
-                        data.parameterInfo.callableDescriptor as FunctionDescriptor,
-                        data.parameterInfo,
-                        data.originalExpression)
-            }
-        }
+    override fun createQuickFix(data: CreateParameterData<E>): IntentionAction? {
+        return CreateParameterFromUsageFix(
+                data.parameterInfo.callableDescriptor as FunctionDescriptor,
+                data.parameterInfo,
+                data.originalExpression)
     }
 }