/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.wicket.extensions.ajax.markup.html.form.upload;
import javax.servlet.http.HttpServletRequest;
import org.apache.wicket.protocol.http.servlet.MultipartServletWebRequestImpl;
import org.apache.wicket.protocol.http.servlet.UploadInfo;
import org.apache.wicket.request.resource.AbstractResource;
/**
* A resource that prints out basic statistics about the current upload. This resource is used to
* feed the progress bar information by the progress bar javascript which requests this resource
* through ajax.
*
* @author Andrew Lombardi
* @author Igor Vaynberg (ivaynberg)
*/
class UploadStatusResource extends AbstractResource
{
private static final long serialVersionUID = 1L;
@Override
protected ResourceResponse newResourceResponse(final Attributes attributes)
{
ResourceResponse response = new ResourceResponse();
response.setContentType("text/html");
final String content = getStatus(attributes);
response.setWriteCallback(new WriteCallback()
{
@Override
public void writeData(final Attributes attributes)
{
attributes.getResponse().write(content);
}
});
response.setContentLength(content.getBytes().length);
return response;
}
/**
* @param attributes
* @return Status string with progress data that will feed the progressbar.js variables on
* browser to update the progress bar
*/
private String getStatus(final Attributes attributes)
{
HttpServletRequest req = (HttpServletRequest)attributes.getRequest().getContainerRequest();
UploadInfo info = MultipartServletWebRequestImpl.getUploadInfo(req);
String status = null;
if ((info == null) || (info.getTotalBytes() < 1))
{
status = "0|0|0|0|0";
}
else
{
status = "" + info.getPercentageComplete() + "|" + info.getBytesUploadedString() + "|" +
info.getTotalBytesString() + "|" + info.getTransferRateString() + "|" +
info.getRemainingTimeString();
}
status = "<html><body>|" + status + "|</body></html>";
return status;
}
}