/*
* Copyright 2000-2014 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.server.communication;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import javax.portlet.PortletResponse;
import javax.portlet.ResourceRequest;
import javax.portlet.ResourceResponse;
import com.vaadin.server.RequestHandler;
import com.vaadin.server.VaadinPortletResponse;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinResponse;
import com.vaadin.server.VaadinSession;
/**
* Request handler which provides a dummy HTML response to any resource request
* with the resource id DUMMY.
*
* @author Vaadin Ltd
* @since 7.1
*/
public class PortletDummyRequestHandler implements RequestHandler {
@Override
public boolean handleRequest(VaadinSession session, VaadinRequest request,
VaadinResponse response) throws IOException {
if (!isDummyRequest(request)) {
return false;
}
/*
* This dummy page is used by action responses to redirect to, in order
* to prevent the boot strap code from being rendered into strange
* places such as iframes.
*/
PortletResponse portletResponse = ((VaadinPortletResponse) response)
.getPortletResponse();
if (portletResponse instanceof ResourceResponse) {
((ResourceResponse) portletResponse).setContentType("text/html");
}
final OutputStream out = ((ResourceResponse) response)
.getPortletOutputStream();
final PrintWriter outWriter = new PrintWriter(new BufferedWriter(
new OutputStreamWriter(out, "UTF-8")));
outWriter.print("<html><body>dummy page</body></html>");
outWriter.close();
return true;
}
public static boolean isDummyRequest(VaadinRequest request) {
ResourceRequest resourceRequest = PortletUIInitHandler
.getResourceRequest(request);
if (resourceRequest == null) {
return false;
}
return resourceRequest.getResourceID() != null
&& resourceRequest.getResourceID().equals("DUMMY");
}
}