src/main/java/com/example/converter/ConverterController.java - master - nff/lab_1

src/main/java/com/example/converter/ConverterController.java
92 строки3 KB
nff
Первый коммит
01 мар 2026, 18:56
01 мар 2026, 18:5639794b6
package com.example.converter;

import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.*;

import java.net.URL;
import java.util.ResourceBundle;

public class ConverterController implements Initializable {

    @FXML
    private TextField amountField;

    @FXML
    private ComboBox<String> fromCombo;

    @FXML
    private ComboBox<String> toCombo;

    @FXML
    private Label resultLabel;

    @FXML
    private ListView<String> historyList;

    private ConverterModel model;
    private ObservableList<String> historyObservable;

    @Override
    public void initialize(URL location, ResourceBundle resources) {
        model = new ConverterModel();

        ObservableList<String> units = FXCollections.observableArrayList(
                "мин", "ч", "дн", "нед", "работа_ч", "работа_дн"
        );
        fromCombo.setItems(units);
        toCombo.setItems(units);

        fromCombo.setValue("ч");
        toCombo.setValue("мин");

        historyObservable = FXCollections.observableArrayList();
        historyList.setItems(historyObservable);
    }

    @FXML
    public void handleConvert() {
        String amountText = amountField.getText();
        if (amountText == null || amountText.trim().isEmpty()) {
            showAlert("Введите число");
            return;
        }

        double amount;
        try {
            amount = Double.parseDouble(amountText.trim());
        } catch (NumberFormatException e) {
            showAlert("Некорректный ввод.");
            return;
        }

        String from = fromCombo.getValue();
        String to = toCombo.getValue();
        if (from == null || to == null) {
            showAlert("Выберите единицы измерения");
            return;
        }

        try {
            double result = model.convert(amount, from, to);
            String resultText = String.format("%.2f %s = %.2f %s", amount, from, result, to);
            resultLabel.setVisible(true);
            resultLabel.setText(resultText);

            model.addHistory(resultText);
            historyObservable.setAll(model.getHistory());
        } catch (IllegalArgumentException e) {
            showAlert(e.getMessage());
        }
    }

    private void showAlert(String message) {
        Alert alert = new Alert(Alert.AlertType.ERROR);
        alert.setTitle("Ошибка");
        alert.setHeaderText(null);
        alert.setContentText(message);
        alert.showAndWait();
    }
}