/*
* Copyright 2012 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.tests.application;
import java.io.IOException;
import java.io.PrintWriter;
import com.vaadin.server.ExternalResource;
import com.vaadin.server.RequestHandler;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinResponse;
import com.vaadin.server.VaadinSession;
import com.vaadin.shared.ui.progressindicator.ProgressIndicatorServerRpc;
import com.vaadin.tests.components.AbstractTestUI;
import com.vaadin.ui.Link;
import com.vaadin.ui.ProgressIndicator;
public class NavigateWithOngoingXHR extends AbstractTestUI {
private final RequestHandler slowRequestHandler = new RequestHandler() {
@Override
public boolean handleRequest(VaadinSession session,
VaadinRequest request, VaadinResponse response)
throws IOException {
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(new ProgressIndicatorServerRpc() {
@Override
public void poll() {
// 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);
}
}