import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.scene.control.Button;
import javafx.scene.paint.Color;
import javafx.scene.layout.StackPane;
import javafx.scene.shape.Rectangle;
import javafx.scene.shape.Circle;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.layout.GridPane;
import javafx.geometry.Pos;
import javafx.event.*;
import javafx.event.ActionEvent;


public class HovedprogramJavafx extends Application {

    public void start(Stage teater){

        GridPane rootPane = new GridPane();
        MinKlasse handle = new MinKlasse();


        for (int i = 0; i < 5; i++){
            for (int j = 0; j < 5; j++){
                Button knapp = new Button();
                knapp.setOnAction(handle);
                knapp.setPrefSize(100,100);
                rootPane.add(knapp, i, j);
            }
        }

        Scene scene = new Scene(rootPane);

        teater.setScene(scene);
        teater.show();
    }

    class MinKlasse implements EventHandler<ActionEvent>{

        public void handle(ActionEvent e){

            Button denne = (Button) e.getSource();

            String tekst = denne.getText();

            if (tekst == ""){
                denne.setText("X");
            }
            else {
                denne.setText("");
            }
        }
    }



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





















































/*
public class HovedprogramJavafx extends Application {

    String minTekst = "Du kan endre meg!";
    Text endre;
    Button knapp1;
    Button knapp2;

    public void start(Stage teater){

        VBox rootPane = new VBox();
        Scene scene = new Scene(rootPane);

        StackPane paneTekst = new StackPane();
        Text tekst = new Text("Hello!");
        tekst.setFont(new Font(40));
        paneTekst.getChildren().add(tekst);
        rootPane.getChildren().add(paneTekst);

        StackPane paneEndre = new StackPane();
        endre = new Text(minTekst);
        endre.setFont(new Font(40));
        paneEndre.getChildren().add(endre);
        rootPane.getChildren().add(paneEndre);

        knapp1 = new Button("Endre 1");
        EndreTekst endreTekst = new EndreTekst();
        knapp1.setOnAction(endreTekst);
        knapp2 = new Button("Endre 2");
        knapp2.setOnAction(endreTekst);
        HBox paneH = new HBox();
        paneH.getChildren().add(knapp1);
        paneH.getChildren().add(knapp2);
        paneH.setAlignment(Pos.CENTER);
        rootPane.getChildren().add(paneH);

        rootPane.setAlignment(Pos.CENTER);
        rootPane.setSpacing(50);

        teater.setWidth(400);
        teater.setHeight(400);
        teater.setTitle("Mitt program");
        teater.setScene(scene);
        teater.show();
    }

    class EndreTekst1 implements EventHandler<ActionEvent> {

        public void handle(ActionEvent e){

            minTekst = "DU ENDRET MEG! :O";
            endre.setText(minTekst);
        }
    }

    class EndreTekst2 implements EventHandler<ActionEvent> {

        public void handle(ActionEvent e){

            minTekst = "HEHEHE";
            endre.setText(minTekst);
        }
    }

    class EndreTekst implements EventHandler<ActionEvent> {

        public void handle(ActionEvent e){

            Button denne = (Button) e.getSource();

            if (denne == knapp1){
                minTekst = "DU ENDRET MEG! :O";
                endre.setText(minTekst);
            }
            if (denne == knapp2){
                minTekst = "HEHEHE";
                endre.setText(minTekst);
            }
        }
    }



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