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IntroChartsUI.java
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IntroChartsUI.java
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package org.vaadin.miki.charts.intro;
import com.vaadin.addon.charts.Chart;
import com.vaadin.addon.charts.model.ChartType;
import com.vaadin.addon.charts.model.Configuration;
import com.vaadin.addon.charts.model.DataProviderSeries;
import com.vaadin.annotations.Theme;
import com.vaadin.annotations.VaadinServletConfiguration;
import com.vaadin.annotations.Widgetset;
import com.vaadin.data.provider.ListDataProvider;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinServlet;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;
import org.vaadin.miki.charts.data.mock.MockDataService;
import org.vaadin.miki.charts.data.model.Book;
import org.vaadin.miki.charts.data.model.BookPrice;
import javax.servlet.annotation.WebServlet;
import java.util.Collection;
/**
* This UI is the application entry point. A UI may either represent a browser window
* (or tab) or some part of a html page where a Vaadin application is embedded.
* <p>
* The UI is initialized using {@link #init(VaadinRequest)}. This method is intended to be
* overridden to add component to the user interface and initialize non-component functionality.
*/
@Theme("introtheme")
@Widgetset("org.vaadin.miki.charts.intro.IntroChartsWidgetset")
public class IntroChartsUI extends UI {
private MockDataService service = new MockDataService();
@Override
protected void init(VaadinRequest vaadinRequest) {
final VerticalLayout layout = new VerticalLayout();
Chart chart = new Chart(ChartType.COLUMN);
Configuration config = chart.getConfiguration();
config.setTitle("Good books and their random prices");
config.setSubTitle("Years 2011-2015, prices in EUR");
Collection<Book> books = service.getBooks();
for(Book book: books) {
Collection<BookPrice> prices = this.service.getPrices(book, 2011, 2012, 2013, 2014, 2015);
// Vaadin 8 no longer has containers - instead we are using Java 8 awesomeness
ListDataProvider<BookPrice> provider = new ListDataProvider<>(prices);
DataProviderSeries<BookPrice> series = new DataProviderSeries<>(provider);
series.setY(BookPrice::getAmount);
series.setX(BookPrice::getYear);
series.setName(book.toString());
config.addSeries(series);
}
layout.addComponent(chart);
setContent(layout);
}
@WebServlet(urlPatterns = "/*", name = "IntroChartsUIServlet", asyncSupported = true)
@VaadinServletConfiguration(ui = IntroChartsUI.class, productionMode = false)
public static class IntroChartsUIServlet extends VaadinServlet {
}
}