Introduce dialog for function inlining #KT-6159 Fixed

See KotlinInlineFunctionProcessor and KotlinInlineFunctionDialog

idea/src/org/jetbrains/kotlin/idea/codeInliner/UsageReplacementStrategy.kt

@@ -69,12 +69,12 @@ fun UsageReplacementStrategy.replaceUsagesInWholeProject(
             })
 }
 
-private fun UsageReplacementStrategy.replaceUsages(
+fun UsageReplacementStrategy.replaceUsages(
         usages: Collection<KtSimpleNameExpression>,
         targetPsiElement: PsiElement,
         project: Project,
         commandName: String,
-        postAction: () -> Unit
+        postAction: () -> Unit = {}
 ) {
     GuiUtils.invokeLaterIfNeeded({
         project.executeWriteCommand(commandName) {

idea/src/org/jetbrains/kotlin/idea/refactoring/inline/KotlinInlineFunctionDialog.kt

@@ -0,0 +1,91 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring.inline
+
+import com.intellij.openapi.help.HelpManager
+import com.intellij.openapi.project.Project
+import com.intellij.refactoring.HelpID
+import com.intellij.refactoring.JavaRefactoringSettings
+import com.intellij.refactoring.RefactoringBundle
+import com.intellij.refactoring.inline.InlineOptionsDialog
+import org.jetbrains.kotlin.idea.codeInliner.CallableUsageReplacementStrategy
+import org.jetbrains.kotlin.idea.quickfix.createFromUsage.callableBuilder.getReturnTypeReference
+import org.jetbrains.kotlin.idea.references.KtSimpleNameReference
+import org.jetbrains.kotlin.psi.KtConstructor
+import org.jetbrains.kotlin.psi.KtNamedFunction
+
+// NB: similar to IDEA InlineMethodDialog / KotlinInlineValDialog
+class KotlinInlineFunctionDialog(
+        project: Project,
+        private val function: KtNamedFunction,
+        private val reference: KtSimpleNameReference?,
+        private val replacementStrategy: CallableUsageReplacementStrategy,
+        private val allowInlineThisOnly: Boolean
+) : InlineOptionsDialog(project, true, function) {
+
+    private var occurrencesNumber = initOccurrencesNumber(function)
+
+    init {
+        myInvokedOnReference = reference != null
+        title = RefactoringBundle.message("inline.method.title")
+        init()
+    }
+
+    override fun allowInlineAll() = true
+
+    override fun getNameLabelText(): String {
+        val occurrencesString =
+                if (occurrencesNumber > -1) " - $occurrencesNumber occurrence${if (occurrencesNumber == 1) "" else "s"}"
+                else ""
+        val methodText = "${function.nameAsSafeName}" + function.valueParameters.joinToString(prefix = "(", postfix = ")") {
+                             "${it.nameAsSafeName}: ${it.typeReference?.text}"
+                         } + (function.getReturnTypeReference()?.let { ": " + it.text } ?: "")
+        return RefactoringBundle.message("inline.method.method.label", methodText, occurrencesString)
+    }
+
+    override fun getBorderTitle(): String = RefactoringBundle.message("inline.method.border.title")
+
+    override fun getInlineThisText(): String = RefactoringBundle.message("this.invocation.only.and.keep.the.method")
+
+    override fun getInlineAllText(): String = RefactoringBundle.message(
+            if (function.isWritable) "all.invocations.and.remove.the.method"
+            else "all.invocations.in.project"
+    )
+
+    override fun getKeepTheDeclarationText(): String =
+            if (function.isWritable) RefactoringBundle.message("all.invocations.keep.the.method")
+            else super.getKeepTheDeclarationText()
+
+    public override fun doAction() {
+        invokeRefactoring(
+                KotlinInlineFunctionProcessor(project, replacementStrategy, function,
+                                              reference, isInlineThisOnly, !isInlineThisOnly && !isKeepTheDeclaration)
+        )
+
+        val settings = JavaRefactoringSettings.getInstance()
+        if (myRbInlineThisOnly.isEnabled && myRbInlineAll.isEnabled) {
+            settings.INLINE_METHOD_THIS = isInlineThisOnly
+        }
+    }
+
+    override fun doHelpAction() =
+            HelpManager.getInstance().invokeHelp(if (function is KtConstructor<*>) HelpID.INLINE_CONSTRUCTOR else HelpID.INLINE_METHOD)
+
+    override fun canInlineThisOnly() = allowInlineThisOnly
+
+    override fun isInlineThis() = JavaRefactoringSettings.getInstance().INLINE_METHOD_THIS
+}

idea/src/org/jetbrains/kotlin/idea/refactoring/inline/KotlinInlineFunctionHandler.kt

@@ -16,11 +16,14 @@
 
 package org.jetbrains.kotlin.idea.refactoring.inline
 
+import com.intellij.codeInsight.TargetElementUtil
 import com.intellij.lang.Language
 import com.intellij.lang.refactoring.InlineActionHandler
+import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiElement
+import com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference
 import com.intellij.refactoring.RefactoringBundle
 import com.intellij.refactoring.util.CommonRefactoringUtil
 import org.jetbrains.kotlin.descriptors.SimpleFunctionDescriptor
@@ -30,8 +33,8 @@ import org.jetbrains.kotlin.idea.caches.resolve.getResolutionFacade
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptor
 import org.jetbrains.kotlin.idea.codeInliner.CallableUsageReplacementStrategy
 import org.jetbrains.kotlin.idea.codeInliner.CodeToInlineBuilder
-import org.jetbrains.kotlin.idea.codeInliner.replaceUsagesInWholeProject
 import org.jetbrains.kotlin.idea.core.copied
+import org.jetbrains.kotlin.idea.references.KtSimpleNameReference
 import org.jetbrains.kotlin.idea.util.getResolutionScope
 import org.jetbrains.kotlin.psi.KtBlockExpression
 import org.jetbrains.kotlin.psi.KtNamedFunction
@@ -39,6 +42,7 @@ import org.jetbrains.kotlin.psi.KtReturnExpression
 import org.jetbrains.kotlin.psi.psiUtil.collectDescendantsOfType
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.types.TypeUtils
+import org.jetbrains.kotlin.utils.addToStdlib.firstIsInstanceOrNull
 
 class KotlinInlineFunctionHandler: InlineActionHandler() {
     override fun isEnabledForLanguage(language: Language) = language == KotlinLanguage.INSTANCE
@@ -92,8 +96,22 @@ class KotlinInlineFunctionHandler: InlineActionHandler() {
             replacementBuilder.prepareCodeToInline(bodyCopy, emptyList(), ::analyzeBodyCopy)
         }
 
-        val commandName = RefactoringBundle.message("inline.command", element.name)
+        val reference = editor?.let { TargetElementUtil.findReference(it, it.caretModel.offset) }
-        CallableUsageReplacementStrategy(replacement)
+        val nameReference = when (reference) {
-                .replaceUsagesInWholeProject(element, commandName, commandName, postAction = { element.delete() })
+            is KtSimpleNameReference -> reference
+            is PsiMultiReference -> reference.references.firstIsInstanceOrNull<KtSimpleNameReference>()
+            else -> null
+        }
+
+        val replacementStrategy = CallableUsageReplacementStrategy(replacement)
+
+        // TODO: allowInlineThisOnly
+        val dialog = KotlinInlineFunctionDialog(project, element, nameReference, replacementStrategy, allowInlineThisOnly = false)
+        if (!ApplicationManager.getApplication().isUnitTestMode) {
+            dialog.show()
+        }
+        else {
+            dialog.doAction()
+        }
     }
 }

idea/src/org/jetbrains/kotlin/idea/refactoring/inline/KotlinInlineFunctionProcessor.kt

@@ -0,0 +1,82 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.refactoring.inline
+
+import com.intellij.lang.findUsages.DescriptiveNameUtil
+import com.intellij.openapi.project.Project
+import com.intellij.psi.search.GlobalSearchScope
+import com.intellij.psi.search.searches.ReferencesSearch
+import com.intellij.refactoring.BaseRefactoringProcessor
+import com.intellij.refactoring.RefactoringBundle
+import com.intellij.usageView.UsageInfo
+import com.intellij.usageView.UsageViewBundle
+import com.intellij.usageView.UsageViewDescriptor
+import org.jetbrains.kotlin.idea.codeInliner.CallableUsageReplacementStrategy
+import org.jetbrains.kotlin.idea.codeInliner.replaceUsages
+import org.jetbrains.kotlin.idea.references.KtSimpleNameReference
+import org.jetbrains.kotlin.idea.stubindex.KotlinSourceFilterScope
+import org.jetbrains.kotlin.idea.util.application.runReadAction
+import org.jetbrains.kotlin.psi.KtNamedFunction
+import org.jetbrains.kotlin.psi.KtSimpleNameExpression
+
+class KotlinInlineFunctionProcessor(
+        project: Project,
+        private val replacementStrategy: CallableUsageReplacementStrategy,
+        private val function: KtNamedFunction,
+        private val reference: KtSimpleNameReference?,
+        private val inlineThisOnly: Boolean,
+        private val deleteAfter: Boolean
+) : BaseRefactoringProcessor(project) {
+
+    private val commandName = RefactoringBundle.message("inline.method.command", DescriptiveNameUtil.getDescriptiveName(function))
+
+    override fun findUsages(): Array<UsageInfo> {
+        if (inlineThisOnly && reference != null) return arrayOf(UsageInfo(reference))
+        val usages = runReadAction {
+            val searchScope = KotlinSourceFilterScope.projectSources(GlobalSearchScope.projectScope(myProject), myProject)
+            ReferencesSearch.search(function, searchScope).filterIsInstance<KtSimpleNameReference>()
+        }
+        return usages.map(::UsageInfo).toTypedArray()
+    }
+
+    override fun performRefactoring(usages: Array<out UsageInfo>) {
+        replacementStrategy.replaceUsages(
+                usages.mapNotNull { it.element as? KtSimpleNameExpression },
+                function,
+                myProject,
+                commandName,
+                { if (deleteAfter) function.delete() }
+        )
+    }
+
+    override fun getCommandName(): String = commandName
+
+    override fun createUsageViewDescriptor(usages: Array<out UsageInfo>): UsageViewDescriptor {
+        return object : UsageViewDescriptor {
+            override fun getCommentReferencesText(usagesCount: Int, filesCount: Int) =
+                    RefactoringBundle.message("comments.elements.header", UsageViewBundle.getOccurencesString(usagesCount, filesCount))
+
+            override fun getCodeReferencesText(usagesCount: Int, filesCount: Int) =
+                    RefactoringBundle.message("invocations.to.be.inlined", UsageViewBundle.getReferencesString(usagesCount, filesCount))
+
+            override fun getElements() = arrayOf(function)
+
+            override fun getProcessedElementsHeader(): String =
+                    RefactoringBundle.message("inline.method.elements.header")
+        }
+    }
+}