/*
* Copyright (c) 2011 PonySDK
* Owners:
* Luciano Broussal <luciano.broussal AT gmail.com>
* Mathieu Barbier <mathieu.barbier AT gmail.com>
* Nicolas Ciaravola <nicolas.ciaravola.pro AT gmail.com>
*
* WebSite:
* http://code.google.com/p/pony-sdk/
*
* 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.ponysdk.sample.client.page;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.ponysdk.core.StreamResource;
import com.ponysdk.core.event.StreamHandler;
import com.ponysdk.ui.server.basic.PButton;
import com.ponysdk.ui.server.basic.PFlowPanel;
import com.ponysdk.ui.server.basic.event.PClickEvent;
import com.ponysdk.ui.server.basic.event.PClickHandler;
public class StreamResourcePageActivity extends SamplePageActivity {
public StreamResourcePageActivity() {
super("Stream resource", "Resource management");
}
@Override
protected void onFirstShowPage() {
super.onFirstShowPage();
final PFlowPanel panel = new PFlowPanel();
final PButton downloadImageButton = new PButton("Download Pony image");
downloadImageButton.addClickHandler(new PClickHandler() {
@Override
public void onClick(final PClickEvent event) {
final StreamResource streamResource = new StreamResource();
streamResource.open(new StreamHandler() {
@Override
public void onStream(final HttpServletRequest request, final HttpServletResponse response) {
response.reset();
response.setContentType("image/png");
response.setHeader("Content-Disposition", "attachment; filename=pony_image.png");
try {
final OutputStream output = response.getOutputStream();
final InputStream input = getClass().getClassLoader().getResourceAsStream("images/pony.png");
final byte[] buff = new byte[1024];
while (input.read(buff) != -1) {
output.write(buff);
}
output.flush();
output.close();
} catch (final IOException e) {
e.printStackTrace();
}
}
});
}
});
panel.add(downloadImageButton);
examplePanel.setWidget(panel);
}
}