HW-07-JavaFX/src/main/java/sbu/javafx/PlaylistController.java

package sbu.javafx;

import javafx.fxml.FXML;
import javafx.scene.control.ListView;
import javafx.scene.control.Alert;
import javafx.scene.control.ButtonType;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.fxml.FXMLLoader;
import java.io.IOException;
import java.util.ArrayList;

public class PlaylistController
{

    @FXML
    private ListView<String> playlistListView;

    private ArrayList<Song> playlist = new ArrayList<>();

    public void setPlaylist(ArrayList<Song> playlist)
    {
        this.playlist = playlist;
        refreshPlaylist();
    }

    private void refreshPlaylist()
    {
        playlistListView.getItems().clear();

        if (playlist.isEmpty())
            playlistListView.getItems().add("Playlist is empty.");
        else
            for (Song song : playlist)
                playlistListView.getItems().add(song.toString());
    }

    @FXML
    private void goBack()
    {
        try
        {
            FXMLLoader loader = new FXMLLoader(MusicApp.class.getResource("App-view.fxml"));
            Scene scene = new Scene(loader.load(), 1280, 900);

            Stage stage = (Stage) playlistListView.getScene().getWindow();
            stage.setScene(scene);
            stage.setTitle("Music Player");
        }
        catch (IOException e)
        {
            e.printStackTrace();
            Alert alert = new Alert(Alert.AlertType.ERROR, "Failed to return to main screen.", ButtonType.OK);
            alert.showAndWait();
        }
    }
}