我想更新这个例子的代码：
http://www.java2s.com/Code/Java/JavaFX/StackPanebasedwizard.htm
package javafxwizard;
import javafx.application.Application;
import javafx.stage.Stage;
import java.util.Stack;
import javafx.beans.property.BooleanProperty;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.LabelBuilder;
import javafx.scene.control.RadioButton;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextAreaBuilder;
import javafx.scene.control.Toggle;
import javafx.scene.control.ToggleGroup;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Priority;
import javafx.scene.layout.Region;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.StackPaneBuilder;
import javafx.scene.layout.VBox;
import javafx.scene.layout.VBoxBuilder;
public class JavaFXWizard extends Application {
public static void main(String[] args) throws Exception {
launch(args);
}
@Override
public void start(Stage stage) throws Exception {
stage.setScene(new Scene(new SurveyWizard(stage), 400, 250));
stage.show();
}
}
class Wizard extends StackPane {
private static final int UNDEFINED = -1;
private ObservableList<WizardPage> pages = FXCollections
.observableArrayList();
private Stack<Integer> history = new Stack<>();
private int curPageIdx = UNDEFINED;
Wizard(WizardPage... nodes) {
pages.addAll(nodes);
navTo(0);
setStyle("-fx-padding: 10; -fx-background-color: cornsilk;");
}
void nextPage() {
if (hasNextPage()) {
navTo(curPageIdx + 1);
}
}
void priorPage() {
if (hasPriorPage()) {
navTo(history.pop(), false);
}
}
boolean hasNextPage() {
return (curPageIdx < pages.size() - 1);
}
boolean hasPriorPage() {
return !history.isEmpty();
}
void navTo(int nextPageIdx, boolean pushHistory) {
if (nextPageIdx < 0 || nextPageIdx >= pages.size()) {
return;
}
if (curPageIdx != UNDEFINED) {
if (pushHistory) {
history.push(curPageIdx);
}
}
WizardPage nextPage = pages.get(nextPageIdx);
curPageIdx = nextPageIdx;
getChildren().clear();
getChildren().add(nextPage);
nextPage.manageButtons();
}
void navTo(int nextPageIdx) {
navTo(nextPageIdx, true);
}
void navTo(String id) {
Node page = lookup("#" + id);
if (page != null) {
int nextPageIdx = pages.indexOf(page);
if (nextPageIdx != UNDEFINED) {
navTo(nextPageIdx);
}
}
}
public void finish() {
}
public void cancel() {
}
}
/**
* basic wizard page class
*/
abstract class WizardPage extends VBox {
Button priorButton = new Button("_Previous");
Button nextButton = new Button("N_ext");
Button cancelButton = new Button("Cancel");
Button finishButton = new Button("_Finish");
WizardPage(String title) {
getChildren().add(
LabelBuilder.create().text(title)
.style("-fx-font-weight: bold; -fx-padding: 0 0 5 0;").build());
setId(title);
setSpacing(5);
setStyle("-fx-padding:10; -fx-background-color: honeydew; -fx-border-color: derive(honeydew, -30%); -fx-border-width: 3;");
Region spring = new Region();
VBox.setVgrow(spring, Priority.ALWAYS);
getChildren().addAll(getContent(), spring, getButtons());
priorButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent actionEvent) {
priorPage();
}
});
nextButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent actionEvent) {
nextPage();
}
});
cancelButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent actionEvent) {
getWizard().cancel();
}
});
finishButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent actionEvent) {
getWizard().finish();
}
});
}
HBox getButtons() {
Region spring = new Region();
HBox.setHgrow(spring, Priority.ALWAYS);
HBox buttonBar = new HBox(5);
cancelButton.setCancelButton(true);
finishButton.setDefaultButton(true);
buttonBar.getChildren().addAll(spring, priorButton, nextButton,
cancelButton, finishButton);
return buttonBar;
}
abstract Parent getContent();
boolean hasNextPage() {
return getWizard().hasNextPage();
}
boolean hasPriorPage() {
return getWizard().hasPriorPage();
}
void nextPage() {
getWizard().nextPage();
}
void priorPage() {
getWizard().priorPage();
}
void navTo(String id) {
getWizard().navTo(id);
}
Wizard getWizard() {
return (Wizard) getParent();
}
public void manageButtons() {
if (!hasPriorPage()) {
priorButton.setDisable(true);
}
if (!hasNextPage()) {
nextButton.setDisable(true);
}
}
}
/**
* This class shows a satisfaction survey
*/
class SurveyWizard extends Wizard {
Stage owner;
public SurveyWizard(Stage owner) {
super(new ComplaintsPage(), new MoreInformationPage(), new ThanksPage());
this.owner = owner;
}
@Override
public void finish() {
System.out.println("Had complaint? "
+ SurveyData.instance.hasComplaints.get());
if (SurveyData.instance.hasComplaints.get()) {
System.out.println("Complaints: "
+ (SurveyData.instance.complaints.get().isEmpty() ? "No Details"
: "\n" + SurveyData.instance.complaints.get()));
}
owner.close();
}
@Override
public void cancel() {
System.out.println("Cancelled");
owner.close();
}
}
/**
* Simple placeholder class for the customer entered survey response.
*/
class SurveyData {
BooleanProperty hasComplaints = new SimpleBooleanProperty();
StringProperty complaints = new SimpleStringProperty();
static SurveyData instance = new SurveyData();
}
/**
* This class determines if the user has complaints. If not, it jumps to the
* last page of the wizard.
*/
class ComplaintsPage extends WizardPage {
private RadioButton yes;
private RadioButton no;
private ToggleGroup options = new ToggleGroup();
public ComplaintsPage() {
super("Complaints");
nextButton.setDisable(true);
finishButton.setDisable(true);
yes.setToggleGroup(options);
no.setToggleGroup(options);
options.selectedToggleProperty().addListener(new ChangeListener<Toggle>() {
@Override
public void changed(ObservableValue<? extends Toggle> observableValue,
Toggle oldToggle, Toggle newToggle) {
nextButton.setDisable(false);
finishButton.setDisable(false);
}
});
}
@Override
Parent getContent() {
yes = new RadioButton("Yes");
no = new RadioButton("No");
SurveyData.instance.hasComplaints.bind(yes.selectedProperty());
return VBoxBuilder.create().spacing(5)
.children(new Label("Do you have complaints?"), yes, no).build();
}
@Override
void nextPage() {
// If they have complaints, go to the normal next page
if (options.getSelectedToggle().equals(yes)) {
super.nextPage();
} else {
// No complaints? Short-circuit the rest of the pages
navTo("Thanks");
}
}
}
/**
* This page gathers more information about the complaint
*/
class MoreInformationPage extends WizardPage {
public MoreInformationPage() {
super("More Info");
}
@Override
Parent getContent() {
TextArea textArea = TextAreaBuilder.create().wrapText(true).build();
nextButton.setDisable(true);
textArea.textProperty().addListener(new ChangeListener<String>() {
@Override
public void changed(ObservableValue<? extends String> observableValue,
String oldValue, String newValue) {
nextButton.setDisable(newValue.isEmpty());
}
});
SurveyData.instance.complaints.bind(textArea.textProperty());
return VBoxBuilder.create().spacing(5)
.children(new Label("Please enter your complaints."), textArea).build();
}
}
/**
* This page thanks the user for taking the survey
*/
class ThanksPage extends WizardPage {
public ThanksPage() {
super("Thanks");
}
@Override
Parent getContent() {
StackPane stack = StackPaneBuilder.create().children(new Label("Thanks!"))
.build();
VBox.setVgrow(stack, Priority.ALWAYS);
return stack;
}
}
你能帮我更新代码吗？在 Java 8 中LabelBuilder TextAreaBuilder StackPaneBuilder VBoxBuilder中是否有过时的代码？
你能帮我简化代码并为 Java 8 更新吗？