Make plugin compatible with idea version 2019.3

gradle.properties

@@ -1,4 +1,4 @@
 kotlin.code.style=official
 
-pluginVersion = 1.0.0-192
-platformVersion = 2019.2
+pluginVersion = 1.0.0-193
+platformVersion = 2019.3

src/main/kotlin/de/idetools/filename_template/CreateFileWithFilenameTemplateAction.kt

@@ -3,12 +3,17 @@ package de.idetools.filename_template
 import com.intellij.icons.AllIcons
 import com.intellij.ide.IdeBundle
 import com.intellij.ide.actions.CreateFileAction
+import com.intellij.ide.ui.newItemPopup.NewItemPopupUtil
+import com.intellij.ide.ui.newItemPopup.NewItemSimplePopupPanel
+import com.intellij.lang.LangBundle
 import com.intellij.openapi.project.Project
-import com.intellij.openapi.ui.Messages
+import com.intellij.openapi.ui.InputValidatorEx
 import com.intellij.psi.PsiDirectory
 import com.intellij.psi.PsiElement
+import java.awt.event.InputEvent
 import java.time.LocalDateTime
 import java.time.ZoneOffset
+import java.util.function.Consumer
 
 class CreateFileWithFilenameTemplateAction(
     text: String,
@@ -17,17 +22,33 @@ class CreateFileWithFilenameTemplateAction(
 ) :
     CreateFileAction(text, description, AllIcons.FileTypes.Unknown) {
 
-    override fun invokeDialog(project: Project?, directory: PsiDirectory?): Array<PsiElement> {
+    override fun invokeDialog(
+        project: Project,
+        directory: PsiDirectory,
+        elementsConsumer: Consumer<Array<PsiElement?>?>
+    ) {
         val validator: MyInputValidator = MyValidator(project, directory)
-        Messages.showInputDialog(
-            project,
-            IdeBundle.message("prompt.enter.new.file.name"),
-            IdeBundle.message("title.new.file"),
-            null,
-            processTemplate(template),
-            validator
-        )
-        return validator.createdElements
+        val contentPanel = NewItemSimplePopupPanel()
+        val nameField = contentPanel.textField
+
+        nameField.text = processTemplate(template)
+
+        val popup = NewItemPopupUtil.createNewItemPopup(IdeBundle.message("title.new.file"), contentPanel, nameField)
+        contentPanel.setApplyAction { event: InputEvent? ->
+            val name = nameField.text
+            if (validator.checkInput(name) && validator.canClose(name)) {
+                popup.closeOk(event)
+                elementsConsumer.accept(validator.createdElements)
+            } else {
+                val errorMessage =
+                    if (validator is InputValidatorEx)
+                        (validator as InputValidatorEx).getErrorText(name)
+                    else
+                        LangBundle.message("incorrect.name")
+                contentPanel.setError(errorMessage)
+            }
+        }
+        popup.showCenteredInCurrentWindow(project)
     }
 
     private fun processTemplate(template: String): String {