JavaFX中Stage的resizable属性绑定不起作用

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package chapter2;

import java.util.List;
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Rectangle2D;
import javafx.geometry.VPos;
import javafx.scene.Group;
import javafx.scene.GroupBuilder;
import javafx.scene.Scene;
import javafx.scene.SceneBuilder;
import javafx.scene.control.ButtonBuilder;
import javafx.scene.control.CheckBox;
import javafx.scene.control.CheckBoxBuilder;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.control.TextFieldBuilder;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.HBoxBuilder;
import javafx.scene.layout.VBoxBuilder;
import javafx.scene.paint.Color;
import javafx.scene.shape.RectangleBuilder;
import javafx.scene.text.Text;
import javafx.scene.text.TextBuilder;
import javafx.stage.Screen;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
import javafx.stage.WindowEvent;

/**
 *
 * @author admin
 */
public class StageCoach extends Application {
    StringProperty title = new SimpleStringProperty();
    
    Text textStageX;
    Text textStageY;
    Text textStageW;
    Text textStageH;
    Text textStageF;
    Text textStageR;
    CheckBox checkBoxResizable;
    CheckBox checkBoxFullScreen;
    
    double dragAnchorX;
    double dragAnchorY;
    
    @Override
    public void start(Stage stage) {
        StageStyle stageStyle = StageStyle.DECORATED;
        List<String> unnamedParams = getParameters().getUnnamed();
        if(unnamedParams.size() > 0) {
            String stageStyleParam = unnamedParams.get(0);
            if(stageStyleParam.equalsIgnoreCase("transparent")) {
                stageStyle = StageStyle.TRANSPARENT;
            } else if(stageStyleParam.equalsIgnoreCase("undecorated")) {
                stageStyle = StageStyle.UNDECORATED;
            } else if(stageStyleParam.equalsIgnoreCase("utility")) {
                stageStyle = StageStyle.UTILITY;
            }
        }
        
        final Stage stageRef = stage;
        Group rootGroup;
        TextField titleTextField;
        
        Scene scene = SceneBuilder.create()
                .width(270)
                .height(370)
                .fill(Color.TRANSPARENT)
                .root(
                    rootGroup = GroupBuilder.create()
                        .children(
                            RectangleBuilder.create()
                                .width(250)
                                .height(350)
                                .arcWidth(50)
                                .arcHeight(50)
                                .fill(Color.SKYBLUE)
                                .build(),
                            VBoxBuilder.create()
                                .layoutX(30)
                                .layoutY(20)
                                .spacing(10)
                                .children(
                                    textStageX = TextBuilder.create()
                                        .textOrigin(VPos.TOP)
                                        .build(),
                                    textStageY = TextBuilder.create()
                                        .textOrigin(VPos.TOP)
                                        .build(),
                                    textStageW = TextBuilder.create()
                                        .textOrigin(VPos.TOP)
                                        .build(),
                                    textStageH = TextBuilder.create()
                                        .textOrigin(VPos.TOP)
                                        .build(),
                                    textStageF = TextBuilder.create()
                                        .textOrigin(VPos.TOP)
                                        .build(),
                                    textStageR = TextBuilder.create()
                                        .textOrigin(VPos.TOP)
                                        .build(),
                                    checkBoxResizable = CheckBoxBuilder.create()
                                        .text("resizable")
                                        .disable(stageStyle == StageStyle.TRANSPARENT || stageStyle == StageStyle.UNDECORATED)
                                        .build(),
                                    checkBoxFullScreen = CheckBoxBuilder.create()
                                        .text("fullScreen")
                                        .build(),
                                    HBoxBuilder.create()
                                        .spacing(10)
                                        .children(
                                            new Label("title: "),
                                            titleTextField = TextFieldBuilder.create()
                                                .text("Stage Coach")
                                                .prefColumnCount(15)
                                                .build()
                                        )
                                        .build(),
                                    ButtonBuilder.create()
                                        .text("toBack()")
                                        .onAction(new EventHandler<ActionEvent>() {

                                            @Override
                                            public void handle(ActionEvent t) {
                                                stageRef.toBack();
                                            }
                                            
                                        })
                                        .build(),
                                    ButtonBuilder.create()
                                        .text("toFront()")
                                        .onAction(new EventHandler<ActionEvent>() {

                                            @Override
                                            public void handle(ActionEvent t) {
                                                stageRef.toFront();
                                            }

                                        })
                                        .build(),
                                    ButtonBuilder.create()
                                        .text("close()")
                                        .onAction(new EventHandler<ActionEvent>() {

                                            @Override
                                            public void handle(ActionEvent t) {
                                                stageRef.close();
                                            }

                                        })
                                        .build()
                                )
                                .build()
                        )
                        .build()
                )
                .build();
        
        // when mouse button is pressed, save the initial position of screen
        rootGroup.setOnMousePressed(new EventHandler<MouseEvent>() {

            @Override
            public void handle(MouseEvent me) {
                dragAnchorX = me.getScreenX() - stageRef.getX();
                dragAnchorY = me.getScreenY() - stageRef.getY();
            }
            
        });
        
        // When screen is dragged, translate it accordingly
        rootGroup.setOnMouseDragged(new EventHandler<MouseEvent>() {

            @Override
            public void handle(MouseEvent me) {
                stageRef.setX(me.getScreenX() - dragAnchorX);
                stageRef.setY(me.getScreenY() - dragAnchorY);
            }
        
        });
        
        // bind
        textStageX.textProperty().bind(new SimpleStringProperty("x: ").concat(stageRef.xProperty().asString()));
        textStageY.textProperty().bind(new SimpleStringProperty("y: ").concat(stageRef.yProperty().asString()));
        textStageW.textProperty().bind(new SimpleStringProperty("width: ").concat(stageRef.widthProperty().asString()));
        textStageH.textProperty().bind(new SimpleStringProperty("height: ").concat(stageRef.heightProperty().asString()));
        textStageF.textProperty().bind(new SimpleStringProperty("focused: ").concat(stageRef.focusedProperty().asString()));
        stage.setResizable(true);
        textStageR.textProperty().bind(new SimpleStringProperty("resizable: ").concat(stageRef.resizableProperty().asString()));
        // 下面这条语句不起作用...
        checkBoxResizable.selectedProperty().bindBidirectional(stage.resizableProperty());
        checkBoxFullScreen.selectedProperty().addListener(new ChangeListener() {

            @Override
            public void changed(ObservableValue ov, Object oldValue, Object newValue) {
                stageRef.setFullScreen(checkBoxFullScreen.selectedProperty().getValue());
            }
            
        });
        title.bind(titleTextField.textProperty());
        
        stage.setScene(scene);
        stage.titleProperty().bind(title);
        stage.initStyle(stageStyle);
        stage.setOnCloseRequest(new EventHandler<WindowEvent>() {

            @Override
            public void handle(WindowEvent we) {
                System.out.println("Stage is closing");
            }
            
        });
        stage.show();
        Rectangle2D primScreenBounds = Screen.getPrimary().getVisualBounds();
        stage.setX((primScreenBounds.getWidth() - stage.getWidth())/2);
        stage.setY((primScreenBounds.getHeight() - stage.getHeight())/2);
                
    }

    /**
     * The main() method is ignored in correctly deployed JavaFX application.
     * main() serves only as fallback in case the application can not be
     * launched through deployment artifacts, e.g., in IDEs with limited FX
     * support. NetBeans ignores main().
     *
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
}

《Pro JavaFX 2》第2章中的例子StageCoach，发现黄色背景那条语句不起作用，原因未知。可改用监听器

        checkBoxResizable.selectedProperty().addListener(new ChangeListener() {

            @Override
            public void changed(ObservableValue ov, Object oldValue, Object newValue) {
                stageRef.setResizable(checkBoxResizable.selectedProperty().getValue());
            }
            
        });