Binding table's row count to a label with ScalaFX

rowcount.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.paint.*?>
<?import javafx.scene.text.*?>

<AnchorPane id="AnchorPane" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/2.2" fx:controller="scalafxml.demo.rowcount.RowCountController">
  <children>
    <TableView fx:id="table" prefHeight="349.0" prefWidth="572.0" AnchorPane.bottomAnchor="37.0" AnchorPane.leftAnchor="14.0" AnchorPane.rightAnchor="14.0" AnchorPane.topAnchor="14.0">
      <columns>
        <TableColumn maxWidth="5000.0" minWidth="10.0" prefWidth="550.0" text="Test table" fx:id="column" />
      </columns>
    </TableView>
    <Label text="Number of rows:" AnchorPane.bottomAnchor="14.0" AnchorPane.leftAnchor="14.0" />
    <Label fx:id="rowCount" alignment="CENTER_LEFT" prefWidth="410.0" text="#" textFill="#ff3333" AnchorPane.bottomAnchor="13.0" AnchorPane.leftAnchor="110.0">
      <font>
        <Font name="System Bold" size="12.0" />
      </font>
    </Label>
    <Button mnemonicParsing="false" onAction="#addRow" text="Add row" AnchorPane.bottomAnchor="8.0" AnchorPane.rightAnchor="14.0" />
  </children>
</AnchorPane>

RowCountController.scala

package scalafxml.demo.rowcount

import scalafx.Includes._
import scalafxml.core.macros.sfxml
import scalafx.scene.control.{TableColumn, Label, TableView}
import scalafx.event.ActionEvent
import scalafx.application.JFXApp
import scalafxml.core.{DependenciesByType, FXMLView}
import scalafx.scene.Scene
import scalafx.beans.property.StringProperty
import javafx.beans.binding.StringBinding

// Sample data model for the table
class Data(text_ : String) {
  val text = new StringProperty(this, "text", text_)
}

// Our controller class
@sfxml
class RowCountController(
  private val rowCount: Label,                      // label to bind the row count to
  private val table: TableView[Data],               // the table
  private val column: TableColumn[Data, String]) {  // its only column, only for setting up its binding

  // Showing Data.text in the table's only column
  column.cellValueFactory = { _.value.text }

  // Binding the table's item count to the label
  rowCount.text <== new StringBinding {
    bind(table.items.get()) // updated when the observable list is updated
    def computeValue() = table.items.get().size().toString
  }

  // Button event handler to add new rows to the table
  def addRow(event: ActionEvent) {
    table.items.get().add(new Data("Test row"))
  }
}

object RowCountDemo extends JFXApp {

  val root = FXMLView(getClass.getResource("rowcount.fxml"), new DependenciesByType(Map()))

  stage = new JFXApp.PrimaryStage() {
    title = "Row count binding demo"
    scene = new Scene(root)

  }
}

OMG! I was about to throw my notebook through window, but that exemple helped me a lot(to code and to not throw my notebook through window)! +1000 thanks.