package com.vaadin.tests.minitutorials.v7a3;
import com.vaadin.server.ExternalResource;
import com.vaadin.server.VaadinRequest;
import com.vaadin.ui.JavaScript;
import com.vaadin.ui.JavaScriptFunction;
import com.vaadin.ui.Link;
import com.vaadin.ui.Notification;
import com.vaadin.ui.Notification.Type;
import com.vaadin.ui.UI;
import elemental.json.JsonArray;
import elemental.json.JsonException;
public class JSAPIUI extends UI {
@Override
public void init(VaadinRequest request) {
JavaScript.getCurrent().addFunction("com.example.api.notify",
new JavaScriptFunction() {
@Override
public void call(JsonArray arguments) {
try {
String caption = arguments.getString(0);
if (arguments.length() == 1) {
// only caption
Notification.show(caption);
} else {
// type should be in [1]
Notification.show(caption,
Type.values()[((int) arguments.getNumber(1))]);
}
} catch (JsonException e) {
// We'll log in the console, you might not want to
JavaScript.getCurrent().execute(
"console.error('" + e.getMessage() + "')");
}
}
});
setContent(new Link(
"Send message",
new ExternalResource(
"javascript:(function(){com.example.api.notify(prompt('Message'),2);})();")));
}
}