77 lines
2.1 KiB
Java
77 lines
2.1 KiB
Java
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package ru.project.ui.common;
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import com.googlecode.lanterna.gui2.WindowBasedTextGUI;
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import com.googlecode.lanterna.gui2.dialogs.FileDialogBuilder;
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import com.googlecode.lanterna.gui2.dialogs.MessageDialog;
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import com.googlecode.lanterna.gui2.dialogs.MessageDialogButton;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileWriter;
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import java.io.IOException;
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import ru.project.collection.MyList;
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import ru.project.student.Student;
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public class CollectionFileSaveWindow {
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private final WindowBasedTextGUI gui;
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private final MyList<Student> collection;
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public CollectionFileSaveWindow(WindowBasedTextGUI gui, MyList<Student> collection) {
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this.gui = gui;
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this.collection = collection;
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}
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public void showModal() {
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File selectedFile = selectFile();
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if (selectedFile == null) {
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return;
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}
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if (selectedFile.exists()) {
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saveToFile(selectedFile);
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return;
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}
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MessageDialogButton result =
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MessageDialog.showMessageDialog(
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gui,
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"Создание файла",
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"Файл не существует. Создать новый файл?",
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MessageDialogButton.Yes,
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MessageDialogButton.No);
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if (result == MessageDialogButton.Yes) {
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saveToFile(selectedFile);
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}
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}
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private File selectFile() {
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return new FileDialogBuilder()
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.setTitle("Сохранение коллекции")
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.setDescription("Выберите файл:")
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.setActionLabel("Сохранить")
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.build()
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.showDialog(gui);
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}
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private void saveToFile(File file) {
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try (BufferedWriter writer = new BufferedWriter(new FileWriter(file))) {
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for (int i = 0; i < collection.size(); i++) {
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Student student = collection.get(i);
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writer.write(student == null ? "null" : student.toString());
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writer.newLine();
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}
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MessageWindow.showModal(gui, "Коллекция успешно сохранена.");
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} catch (IOException e) {
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MessageWindow.showModal(gui, "Не удалось сохранить коллекцию.");
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}
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}
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}
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