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package com.vaadin.tests.application;
import java.io.PrintWriter;
import com.vaadin.server.ExternalResource;
import com.vaadin.server.RequestHandler;
import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractReindeerTestUI;
import com.vaadin.ui.Link;
import com.vaadin.v7.shared.ui.progressindicator.ProgressIndicatorServerRpc;
import com.vaadin.v7.ui.ProgressIndicator;
public class NavigateWithOngoingXHR extends AbstractReindeerTestUI {
private final RequestHandler slowRequestHandler = (session, request,
response) -> {
if ("/slowRequestHandler".equals(request.getPathInfo())) {
// Make the navigation request last longer to keep the
// communication error visible
// System.out.println("Got slow content request");
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
if (request.getParameter("download") != null) {
response.setHeader("Content-Disposition", "attachment");
}
response.setContentType("text/plain");
PrintWriter writer = response.getWriter();
writer.println("Loaded slowly");
writer.close();
// System.out.println("Finished slow content request");
return true;
}
return false;
};
@Override
protected void setup(VaadinRequest request) {
addComponent(new ProgressIndicator() {
{
registerRpc((ProgressIndicatorServerRpc) () -> {
// System.out.println("Pausing poll request");
try {
// Make the XHR request last longer to make it
// easier to click the link at the right moment.
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
// System.out.println("Continuing poll request");
});
setPollingInterval(3000);
}
});
// Hacky URLs that are might not work in all deployment scenarios
addComponent(new Link("Navigate away",
new ExternalResource("slowRequestHandler")));
addComponent(new Link("Start download",
new ExternalResource("slowRequestHandler?download")));
}
@Override
public void attach() {
super.attach();
getSession().addRequestHandler(slowRequestHandler);
}
@Override
public void detach() {
getSession().removeRequestHandler(slowRequestHandler);
super.detach();
}
@Override
protected String getTestDescription() {
return "Navigating away from a Vaadin page while there's an ongoing XHR request should not cause a communication error to be displayed";
}
@Override
protected Integer getTicketNumber() {
return Integer.valueOf(8891);
}
}
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