projet-programmation-orientee-objet/core/src/sagittarius/view/SettingsScreen.java

package sagittarius.view;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.utils.ActorGestureListener;
import com.kotcrab.vis.ui.VisUI;
import com.kotcrab.vis.ui.util.form.SimpleFormValidator;
import com.kotcrab.vis.ui.widget.VisCheckBox;
import com.kotcrab.vis.ui.widget.VisLabel;
import com.kotcrab.vis.ui.widget.VisTable;
import com.kotcrab.vis.ui.widget.VisTextButton;
import com.kotcrab.vis.ui.widget.VisValidatableTextField;

import sagittarius.SagittariusGame;

public class SettingsScreen extends BaseScreen {

    @Override
    public void initialize() {

        Gdx.input.setInputProcessor(uiStage);

        // Table creation
        VisTable table = new VisTable(true);
        table.setFillParent(true);
        uiStage.addActor(table);

        VisLabel errorLabel = new VisLabel();
		errorLabel.setColor(Color.RED);

        VisValidatableTextField gConstField = new VisValidatableTextField();
        gConstField.setText(Float.toString(SagittariusGame.G));

        VisCheckBox debugModeBox = new VisCheckBox("debug mode");
        debugModeBox.setChecked(SagittariusGame.debugMode);

        VisTextButton saveButton = new VisTextButton("Save");
        saveButton.addListener(new ActorGestureListener() {
            @Override
            public void tap(InputEvent event, float x, float y, int count, int button) {
                super.tap(event, x, y, count, button);

                SagittariusGame.G = Float.parseFloat(gConstField.getText());
                SagittariusGame.debugMode = debugModeBox.isChecked();

            }
        });

        VisTextButton returnButton = new VisTextButton("Go Back");
        returnButton.addListener(new ActorGestureListener() {
            @Override
            public void tap(InputEvent event, float x, float y, int count, int button) {
                super.tap(event, x, y, count, button);
                SagittariusGame.setActiveScreen( new StartScreen() );
            }
        });

        SimpleFormValidator validator;
		validator = new SimpleFormValidator(saveButton, errorLabel, "smooth");
		validator.notEmpty(gConstField, "G cannot be empty");
		validator.floatNumber(gConstField, "G must be a float");
		validator.valueGreaterThan(gConstField, "G must be positive", 0, true);

        // Table structure
        table.add(errorLabel);
        table.row();
        table.add(new VisLabel("G constant:"));
        table.add(gConstField);
        table.row();
        table.add(debugModeBox).colspan(2);
        table.row();
        table.add(saveButton).colspan(2);
        table.row();
        table.add(returnButton).colspan(2);
    }

    @Override
    public void update(float dt) {
        //
    }

    @Override
    public void dispose() {
        VisUI.dispose();
        super.dispose();
    }

}