Refactor: Introduce JTextComponent.onTextChange() function

idea/src/org/jetbrains/kotlin/idea/facet/KotlinFacetEditorGeneralTab.kt

@@ -19,7 +19,6 @@ package org.jetbrains.kotlin.idea.facet
 import com.intellij.facet.ui.*
 import com.intellij.ide.actions.ShowSettingsUtilImpl
 import com.intellij.openapi.project.Project
-import com.intellij.ui.DocumentAdapter
 import com.intellij.ui.HoverHyperlinkLabel
 import com.intellij.util.ui.FormBuilder
 import com.intellij.util.ui.ThreeStateCheckBox
@@ -29,10 +28,10 @@ import org.jetbrains.kotlin.config.TargetPlatformKind
 import org.jetbrains.kotlin.config.createCompilerArguments
 import org.jetbrains.kotlin.config.splitArgumentString
 import org.jetbrains.kotlin.idea.compiler.configuration.*
+import org.jetbrains.kotlin.idea.util.onTextChange
 import java.awt.BorderLayout
 import javax.swing.*
 import javax.swing.border.EmptyBorder
-import javax.swing.event.DocumentEvent
 import kotlin.reflect.full.findAnnotation
 
 class KotlinFacetEditorGeneralTab(
@@ -241,13 +240,7 @@ class KotlinFacetEditorGeneralTab(
     }
 
     private fun JTextField.validateOnChange() {
-        document.addDocumentListener(
-                object : DocumentAdapter() {
-                    override fun textChanged(e: DocumentEvent) {
-                        doValidate()
-                    }
-                }
-        )
+        onTextChange { doValidate() }
     }
 
     private fun AbstractButton.validateOnChange() {

idea/src/org/jetbrains/kotlin/idea/refactoring/introduce/extractClass/ui/KotlinExtractSuperDialogBase.kt

@@ -24,7 +24,6 @@ import com.intellij.refactoring.classMembers.MemberInfoChange
 import com.intellij.refactoring.extractSuperclass.JavaExtractSuperBaseDialog
 import com.intellij.refactoring.util.DocCommentPolicy
 import com.intellij.refactoring.util.RefactoringMessageUtil
-import com.intellij.ui.DocumentAdapter
 import com.intellij.ui.components.JBLabel
 import com.intellij.util.ui.FormBuilder
 import org.jetbrains.kotlin.asJava.toLightClass
@@ -35,6 +34,7 @@ import org.jetbrains.kotlin.idea.refactoring.introduce.extractClass.ExtractSuper
 import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinMemberInfo
 import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinMemberSelectionPanel
 import org.jetbrains.kotlin.idea.refactoring.memberInfo.KotlinUsesAndInterfacesDependencyMemberInfoModel
+import org.jetbrains.kotlin.idea.util.onTextChange
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.KtClassOrObject
 import org.jetbrains.kotlin.psi.KtNamedDeclaration
@@ -42,7 +42,6 @@ import org.jetbrains.kotlin.psi.psiUtil.isIdentifier
 import org.jetbrains.kotlin.psi.psiUtil.quoteIfNeeded
 import java.awt.BorderLayout
 import javax.swing.*
-import javax.swing.event.DocumentEvent
 
 abstract class KotlinExtractSuperDialogBase(
         protected val originalClass: KtClassOrObject,
@@ -102,13 +101,7 @@ abstract class KotlinExtractSuperDialogBase(
 
     override fun createExtractedSuperNameField(): JTextField {
         return super.createExtractedSuperNameField().apply {
-            document.addDocumentListener(
-                    object : DocumentAdapter() {
-                        override fun textChanged(e: DocumentEvent?) {
-                            resetFileNameField()
-                        }
-                    }
-            )
+            onTextChange { resetFileNameField() }
         }
     }
 

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveDeclarations/ui/KotlinAwareMoveFilesOrDirectoriesDialog.kt

@@ -24,7 +24,6 @@ import com.intellij.psi.*
 import com.intellij.refactoring.RefactoringBundle
 import com.intellij.refactoring.copy.CopyFilesOrDirectoriesDialog
 import com.intellij.refactoring.util.CommonRefactoringUtil
-import com.intellij.ui.DocumentAdapter
 import com.intellij.ui.NonFocusableCheckBox
 import com.intellij.ui.RecentsManager
 import com.intellij.ui.TextFieldWithHistoryWithBrowseButton
@@ -36,10 +35,10 @@ import org.jetbrains.kotlin.idea.core.packageMatchesDirectory
 import org.jetbrains.kotlin.idea.refactoring.isInJavaSourceRoot
 import org.jetbrains.kotlin.idea.util.application.executeCommand
 import org.jetbrains.kotlin.idea.util.application.runWriteAction
+import org.jetbrains.kotlin.idea.util.onTextChange
 import org.jetbrains.kotlin.psi.KtFile
 import java.io.File
 import javax.swing.JComponent
-import javax.swing.event.DocumentEvent
 
 class KotlinAwareMoveFilesOrDirectoriesDialog(
         private val project: Project,
@@ -88,13 +87,7 @@ class KotlinAwareMoveFilesOrDirectoriesDialog(
                                                      TextComponentAccessor.TEXT_FIELD_WITH_HISTORY_WHOLE_TEXT)
         val textField = targetDirectoryField.childComponent.textEditor
         FileChooserFactory.getInstance().installFileCompletion(textField, descriptor, true, disposable)
-        textField.document.addDocumentListener(
-                object : DocumentAdapter() {
-                    override fun textChanged(e: DocumentEvent) {
-                        validateOKButton()
-                    }
-                }
-        )
+        textField.onTextChange { validateOKButton() }
         targetDirectoryField.setTextFieldPreferredWidth(CopyFilesOrDirectoriesDialog.MAX_PATH_LENGTH)
         Disposer.register(disposable, targetDirectoryField)
 

idea/src/org/jetbrains/kotlin/idea/util/uiUtil.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.util
+
+import com.intellij.ui.DocumentAdapter
+import javax.swing.event.DocumentEvent
+import javax.swing.text.JTextComponent
+
+fun JTextComponent.onTextChange(action: (DocumentEvent) -> Unit) {
+    document.addDocumentListener(
+            object : DocumentAdapter() {
+                override fun textChanged(e: DocumentEvent) {
+                    action(e)
+                }
+            }
+    )
+}