A sample hello world Vaadin app wrapped for Magnolia 6, featuring the `AlertBuilder`.

hello.yaml

# goes into ${magnolia.resources.dir} (light module) or src/main/resources (java module), under /samples/apps/hello.yaml
appClass: info.magnolia.dev.HelloMagnoliaApp
label: Hello Magnolia
icon: icon-forums-app

HelloMagnoliaApp.java

package info.magnolia.dev;

import static com.vaadin.ui.Notification.Type.HUMANIZED_MESSAGE;

import info.magnolia.icons.MagnoliaIcons;
import info.magnolia.ui.AlertBuilder;
import info.magnolia.ui.api.app.AppContext;
import info.magnolia.ui.api.app.AppView;
import info.magnolia.ui.api.location.Location;
import info.magnolia.ui.framework.app.BaseApp;

import java.text.MessageFormat;

import com.vaadin.ui.Button;
import com.vaadin.ui.FormLayout;
import com.vaadin.ui.Notification;
import com.vaadin.ui.TextField;

/**
 * A sample hello world Vaadin app wrapped for Magnolia, featuring the {@link AlertBuilder}.
 */
public class HelloMagnoliaApp extends BaseApp {
    public HelloMagnoliaApp(AppContext appContext, AppView view) {
        super(appContext, view);
    }

    @Override
    public void start(Location location) {
        // say hi
        TextField nameField = new TextField("Enter your name");

        Button sayHi = new Button("Say Hello", event -> sayHello(nameField.getValue()));
        sayHi.addStyleName("primary");

        Button notSureSayHi = new Button("Say Hello (not sure)", event -> {
            String name = nameField.getValue();
            AlertBuilder.confirmDialog("Say hi?")
                    .withLevel(Notification.Type.HUMANIZED_MESSAGE)
                    .withBody("Are you sure you want to say hello?")
                    .withOkButtonCaption("You bet!")
                    .withDeclineButtonCaption("No way!")
                    .withConfirmationHandler(() -> sayHello(name))
                    .buildAndOpen();
        });
        notSureSayHi.addStyleName("secondary");
        FormLayout form = new FormLayout(nameField, sayHi, notSureSayHi);
        form.setSizeFull();

        getView().addSubAppView(() -> form, "Hello Resurface", MagnoliaIcons.MESSAGE_APP.getCssClass(), false);
    }

    private static void sayHello(String name) {
        MessageFormat messageFormat = new MessageFormat("Hello {0}!");
        Notification.show(messageFormat.format(new Object[] { name }), HUMANIZED_MESSAGE);
    }

    @Override
    public void locationChanged(Location location) {
    }
}