package sample;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Priority;
import javafx.stage.Stage;

/**
 * 布局的嵌套
 * @author RiverLei
 * @Date 2021年08月02日
 * @Description: TODO
 * @Version 1.0
 */
public class LayoutNestedDemo extends Application {

 public static void main(String[] args) {
 launch(args);
 }

 HBox hBox=new HBox();
 TextField textField=new TextField();
 Button select=new Button("ADD");
 Button clean=new Button("clean");

 TextArea textArea=new TextArea();
 @Override
 public void start(Stage primaryStage) throws Exception {
 hBox.setAlignment(Pos.CENTER);
 hBox.setPadding(new Insets(10));

 hBox.getChildren().addAll(textField,select,clean);
 HBox.setHgrow(textField, Priority.ALWAYS);

 //BorderPane嵌套Hbox
 BorderPane borderPane=new BorderPane();
 borderPane.setTop(hBox);
 borderPane.setCenter(textArea);

 Scene scene=new Scene(borderPane,400,400);
 primaryStage.setScene(scene);
 primaryStage.show();

 select.setOnAction(event -> onAdd());
 clean.setOnAction(event -> onClean());
 }

 public void onAdd(){
 String text = textField.getText();
 textArea.appendText(text+"\n");
 textField.clear();
 }

 public void onClean(){
 textArea.clear();
 }
}