import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;

public class BaseConverterApp extends Application {

    @Override
    public void start(Stage primaryStage) {
        GridPane grid = new GridPane();
        grid.setPadding(new Insets(10, 10, 10, 10));
        grid.setVgap(8);
        grid.setHgap(10);

        // 输入原始数值
        Label lblNumber = new Label("数值:");
        TextField txtNumber = new TextField();
        grid.add(lblNumber, 0, 0);
        grid.add(txtNumber, 1, 0);

        // 输入原始进制
        Label lblFromBase = new Label("原始进制:");
        TextField txtFromBase = new TextField();
        grid.add(lblFromBase, 0, 1);
        grid.add(txtFromBase, 1, 1);

        // 输入目标进制
        Label lblToBase = new Label("目标进制:");
        TextField txtToBase = new TextField();
        grid.add(lblToBase, 0, 2);
        grid.add(txtToBase, 1, 2);

        // 转换按钮
        Button btnConvert = new Button("转换");
        grid.add(btnConvert, 1, 3);

        // 显示结果
        Label lblResult = new Label("结果:");
        grid.add(lblResult, 1, 4);

        // 设置场景
        Scene scene = new Scene(grid, 300, 250);
        primaryStage.setScene(scene);
        primaryStage.setTitle("进制转换器");

        // 添加按钮点击事件处理器
        btnConvert.setOnAction(event -> {
            String number = txtNumber.getText();
            int fromBase = Integer.parseInt(txtFromBase.getText());
            int toBase = Integer.parseInt(txtToBase.getText());

            try {
                long decimal = Long.parseLong(number, fromBase);
                String converted = Long.toString(decimal, toBase).toUpperCase();
                lblResult.setText("结果: " + converted);
            } catch (NumberFormatException e) {
                lblResult.setText("错误: 无效的输入或进制。");
            }
        });

        primaryStage.show();
    }

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