如何使用Vaadin + Spring创建MVP架构？

Question

我想创建以下简单的MVP架构:

• 查看类似于vaadin布局,组件和样式的类.非功能性.该意见应与当前ViewScope/SessionScope,所以我使用@UIScope的https://github.com/peholmst/vaadin4spring

• 演示者应该注入视图,在视图组件上注册侦听器,处理用户输入并委托给模型服务

问题:当我将视图注入演示者时,视图会重新创建,因此演示者和视图不在同一范围内.所以绑定不起作用.我可以改变什么来实现上述设计？

@VaadinComponent
@UIScope
public class LoginView {
    //form fields, buttons
}

@Controller
public class LoginPresenter implements ClickListener {
    @Autowired
    private LoginView view;

    @PostConstruct
    public void bind() {
        view.getLoginButton().addClickListener(this);
    }   

    @Override
    public void buttonClick(ClickEvent event) {
        //validate input and login
    }   
}

Answer 1

也许是这样的

public class LoginView {

    @Autowired
    public void initPresenter(LoginPresenter loginPresenter) {
        loginPresenter.setLoginView(this);
        loginPresenter.bind();
    }
}

@Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
public class LoginPresenter {

    private LoginView loginView;

    public void bind() {
        // ...
    }

    public LoginView getLoginView() {
        return loginView;
    }

    public void setLoginView(LoginView loginView) {
        this.loginView = loginView;
    }

}

编辑

例如,您可以解耦添加配置界面,但会增加一些复杂性

    public interface View {

    }

    public interface Presenter {

        void setView(View view);
        void bind();
    }

    public interface ViewManager {

        void configure(View view);
    }

    public class ViewSupport implements View {

        @Autowired
        private ViewManager viewManager;

        @PostConstruct
        public void init() {
            viewManager.configure(this);
        }
    }



 /**
  * ViewManager that configure Presenters following 
  * the naming convention XXView->XXPresenter
  */  
 public class DefaultViewManager implements ViewManager {


    @Autowired
    private ApplicationContext applicationContext;

    @Override
    public void configure(View view) {
        Presenter p = (Presenter) applicationContext.getBean(getPresenterName(view.getClass()));
        p.setView(view);
        p.bind();

    }

    protected String getPresenterName(Class<?> clazz) {
        return StringUtils.uncapitalize(clazz.getSimpleName()).replace("View", "Presenter");
    }

}