XML GUI Scene

XML GUI is extansion for Javity allow you to loading UI stage from external xml file.

This is example game object which load xml view and add custom controllers:

public class SceneLoginBulider implements SceneBulider {
	@Override
	public void buildScene(Scene scene) {

		JGameObject canvas = scene.instantiateGameObject(new Vector2(0, 0));
		JXmlUi jCanvas = new JXmlUi("resources/views/login.xml", "internal/ui/uiskin.json");
		canvas.addComponent(jCanvas);
		canvas.addComponent(new LoginComponent());
		canvas.addComponent(new BackComponent());

	}
}

LoginComponent

public class LoginComponent extends JComponent {
	private Button loginButton;
	private TextField login, email, password;
	private WWW loginWWW;
	public JXmlUi jCanvas;

	@Override
	public void start() {

		jCanvas = getGameObject().getComponent(JXmlUi.class);

		loginButton = jCanvas.getActor("loginButton");
		loginButton.addListener(new ClickListener(){
			@Override
			public void clicked(InputEvent event, float x, float y) {
				login();
			}
		});

		login = jCanvas.getActor("loginInput");
		email = jCanvas.getActor("emailInput");
		password = jCanvas.getActor("passwordInput");

		loginWWW = new WWW("http://localhost:8080/rest/v1/users/login", new WWWResponseListener() {
			
			@Override
			public void httpResponseListener(WWW wwwResponse) {
				LoginStatus loginStatus = wwwResponse.getJsonObjectResponse(LoginStatus.class);
				Gdx.app.log(LoginComponent.class.getSimpleName(), "Login complete: " + loginStatus);
				if(loginStatus.getLoginUser() != null) {
					JSceneManager.loadScene(new SceneMapBulider());
				}else{
					loginButton.setDisabled(false);
				}
			}
		});
	}
	
	@Override
	public void update() {
	}
	
	public void login(){
		loginButton.setDisabled(true);
		loginWWW.GET("login=" + login.getText() + "&password=" + password.getText());
	}
}

Like you can see, LoginController wait for click loginButton and send to server via HTTP GET, login request and procces response. Look javity-net for more info about HTTP connection.

BackComponent

public class BackComponent extends JComponent {
    public JXmlUi jCanvas;
    private Button backButton;

    @Override
    public void start() {

        if (jCanvas == null) jCanvas = getGameObject().getComponent(JXmlUi.class);
        backButton = jCanvas.getActor("backButton");
        backButton.addListener(new ClickListener() {
            @Override
            public void clicked(InputEvent event, float x, float y) {
                back();
            }
        });

    }

    @Override
    public void update() {
    }

    public void back() {

        JSceneManager.loadScene(new SceneMainMenuBulider());
    }
}

BackComponent add listener for back button on loading view, and switch scene to MainMenu when button was pressed.