package com.example.ui;

import org.springframework.beans.factory.annotation.Autowired;

import com.example.view.DefaultView;
import com.example.view.UIScopedView;
import com.example.view.ViewDisplayPanel;
import com.example.view.ViewScopedView;
import com.vaadin.server.VaadinRequest;
import com.vaadin.spring.annotation.SpringUI;
import com.vaadin.ui.Button;
import com.vaadin.ui.CssLayout;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.themes.ValoTheme;

abstract class AbstractSpringUI extends UI {

    @Autowired
    private ViewDisplayPanel springViewDisplay;
    protected CssLayout navigationBar;

    @Override
    protected void init(VaadinRequest request) {
        final VerticalLayout root = new VerticalLayout();
        root.setSizeFull();
        root.setMargin(true);
        root.setSpacing(true);
        setContent(root);

        navigationBar = new CssLayout();
        navigationBar.addStyleName(ValoTheme.LAYOUT_COMPONENT_GROUP);
        navigationBar.addComponent(
                createNavigationButton("Default View", DefaultView.VIEW_NAME));
        navigationBar.addComponent(createNavigationButton("UI Scoped View",
                UIScopedView.VIEW_NAME));
        navigationBar.addComponent(createNavigationButton("View Scoped View",
                ViewScopedView.VIEW_NAME));
        root.addComponent(navigationBar);

        root.addComponent(springViewDisplay);
        root.setExpandRatio(springViewDisplay, 1.0f);

    }

    private Button createNavigationButton(String caption,
            final String viewName) {
        Button button = new Button(caption);
        button.setId(viewName + "-button");
        button.addStyleName(ValoTheme.BUTTON_SMALL);
        button.addClickListener(
                event -> getUI().getNavigator().navigateTo(viewName));
        return button;
    }
}