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package com.vaadin.tests.resources;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.HashMap;
import javax.imageio.ImageIO;
import com.vaadin.server.DynamicConnectorResource;
import com.vaadin.server.WrappedRequest;
import com.vaadin.server.WrappedResponse;
import com.vaadin.tests.components.AbstractTestUI;
import com.vaadin.ui.Embedded;
public class ConnectorResourceTest extends AbstractTestUI {
private static final String DYNAMIC_IMAGE_NAME = "requestImage.png";
@Override
protected void setup(WrappedRequest request) {
addComponent(new Embedded(DYNAMIC_IMAGE_NAME,
new DynamicConnectorResource(this, DYNAMIC_IMAGE_NAME)));
addComponent(new Embedded("Dynamic text", new DynamicConnectorResource(
this, DYNAMIC_IMAGE_NAME, new HashMap<String, String>() {
{
put("text", "Dynamic%20text");
}
})));
}
@Override
protected String getTestDescription() {
// TODO Auto-generated method stub
return null;
}
@Override
protected Integer getTicketNumber() {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean handleConnectorRequest(WrappedRequest request,
WrappedResponse response, String path) throws IOException {
if (DYNAMIC_IMAGE_NAME.equals(path)) {
// Create an image, draw the "text" parameter to it and output it to
// the browser.
String text = request.getParameter("text");
if (text == null) {
text = DYNAMIC_IMAGE_NAME;
}
BufferedImage bi = getImage(text);
response.setContentType("image/png");
ImageIO.write(bi, "png", response.getOutputStream());
return true;
} else {
return super.handleConnectorRequest(request, response, path);
}
}
private BufferedImage getImage(String text) {
BufferedImage bi = new BufferedImage(150, 30,
BufferedImage.TYPE_3BYTE_BGR);
bi.getGraphics()
.drawChars(text.toCharArray(), 0, text.length(), 10, 20);
return bi;
}
}
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