import com.sun.javafx.perf.PerformanceTracker;
import java.util.ArrayList;
import java.util.List;
import javafx.animation.AnimationTimer;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.collections.*;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.stage.Stage;
import javafx.util.Callback;
import javafx.util.Duration;

public class TableColumnMemTest extends Application {
   
    static double SCENE_WIDTH = 800.0;
    static double SCENE_HEIGHT = 600.0;

    static int COLUMNS_PER_ITER = 10;

    Stage stage;
    TableView tableView;

    PerformanceTracker perfTracker;

    int iters;

    @Override public void start(Stage primaryStage) {
        stage = new Stage();

        Group rootGroup = new Group();
        Scene scene = new Scene(rootGroup, SCENE_WIDTH, SCENE_HEIGHT);

        tableView = new TableView();
        tableView.setPrefSize(SCENE_WIDTH-10, SCENE_HEIGHT-10);

        rootGroup.getChildren().add(tableView);

        stage.setScene(scene);
        stage.sizeToScene();
        stage.show();

        perfTracker = PerformanceTracker.getSceneTracker(scene);

        Timeline fpsTimeline = new Timeline();
        fpsTimeline.setCycleCount(Timeline.INDEFINITE);
        KeyFrame fpsKeyFrame = new KeyFrame(Duration.seconds(2), new EventHandler<ActionEvent>() {
            @Override public void handle(ActionEvent e) {
                String fpsText = String.format("FPS: %.2f", perfTracker.getInstantFPS());
                System.out.println(fpsText);
            }
        });
        fpsTimeline.getKeyFrames().add(fpsKeyFrame);

        
        AnimationTimer objectsAllocator = new AnimationTimer() {
            boolean stop = false;

            @Override
            public void handle(long l) {

                //if (iters %2 == 0) {
                //    tableView.getColumns().clear();
                //} else {
                    TableColumn col;
                    for (int i = 0; i < COLUMNS_PER_ITER; i++) {
                        col = new TableColumn("" + i);
                        col.setMaxWidth(20);
                        tableView.getColumns().add(col);
                    }
                //}
                iters ++;
                System.out.println("Created columns: " + (iters * COLUMNS_PER_ITER));
            }
        };
        fpsTimeline.play();
        objectsAllocator.start();
    }

    
    public static void main(String[] args) {
        for (int index = 0; index < args.length; index++) {
            String arg = args[index];

            if ("-columns".equals(arg)) {
                if (index+1 >= args.length) {
                    System.err.println("-columns numer of columns to create per iter");
                    System.exit(1);
                }
                try {
                    COLUMNS_PER_ITER = Integer.parseInt(args[index+1]);
                } catch (IllegalArgumentException e) {
                    System.err.print("-columns option must be Integer");
                    System.exit(1);
                }
                index++;
            }
        }

        System.out.println("Args: columns per iter: " + COLUMNS_PER_ITER);
        Application.launch(TableColumnMemTest.class, args);
    }

}