Hi Cristian,
I've got it working!
Just place all the following files at the same package and you will get a
working example (I tested them with FF35 and IE7).
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.model.AbstractReadOnlyModel;
/**
* @author Ernesto Reinaldo Barreiro (reier...@gmail.com)
*
*/
public class TestPage extends WebPage{
private Label text;
private String labelText = "Hi!";
private DocumentResourceListener documentResourceListener;
/**
*
*/
public TestPage() {
AjaxLink<Void> link = new AjaxLink<Void>("link") {
private static final long serialVersionUID = 1L;
@Override
public void onClick(AjaxRequestTarget target) {
TestPage.this.labelText = "Hi! and donwload image!";
if(target!= null) {
target.addComponent(TestPage.this.text);
String url = documentResourceListener.getURL().toString();
target.appendJavascript(";alert('Hi');window.location.href='"+url+"';");
}
}
};
add(link);
text = new Label("text", new AbstractReadOnlyModel<String>() {
private static final long serialVersionUID = 1L;
@Override
public String getObject() {
return TestPage.this.labelText;
}
});
text.setOutputMarkupId(true);
add(text);
documentResourceListener = new DocumentResourceListener("listener", new
MyPdfResource());
add(documentResourceListener);
}
}
---------------------------
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";>
<html xmlns:wicket="org.apache.wicket">
<head>
</head>
<body>
<a wicket:id="link">Click Me</a>
<span wicket:id="text"></span>
<div wicket:id="listener"></div>
</body>
</html>
---------------------------------
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.wicket.markup.html.DynamicWebResource;
import org.apache.wicket.protocol.http.WebResponse;
/**
* @author Ernesto Reinaldo Barreiro (reier...@gmail.com)
*
*/
public class MyPdfResource extends DynamicWebResource {
private static final long serialVersionUID = 1L;
static int BUFFER_SIZE = 10*1024;
/**
*
*/
public MyPdfResource() {
}
/* (non-Javadoc)
* @see org.apache.wicket.markup.html.DynamicWebResource#getResourceState()
*/
@Override
protected ResourceState getResourceState() {
return new ResourceState() {
@Override
public String getContentType() {
return "application/pdf";
}
@Override
public byte[] getData() {
try {
return bytes(MyPdfResource.class.getResourceAsStream("jta-1_1-spec.pdf"));
} catch (Exception e) {
return null;
}
}
};
}
public static byte[] bytes(InputStream is) throws IOException {
ByteArrayOutputStream out = new ByteArrayOutputStream();
copy(is, out);
return out.toByteArray();
}
@Override
protected void setHeaders(WebResponse response) {
super.setHeaders(response);
response.setAttachmentHeader("jta-1_1-spec.pdf");
}
public static void copy(InputStream is, OutputStream os) throws IOException
{
byte[] buf = new byte[BUFFER_SIZE];
while (true) {
int tam = is.read(buf);
if (tam == -1) {
return;
}
os.write(buf, 0, tam);
}
}
}
Just replace "jta-1_1-spec.pdf" with your own PDF file on MyPdfResource and
the exampel should work. An important bit here if
@Override
protected void setHeaders(WebResponse response) {
....
response.setAttachmentHeader("jta-1_1-spec.pdf");
}
which makes the file to treated as an attachment instead of replacing the
current page.
Best,
Ernesto
P.S. Would it useful to add this to Wicket's wiki?
