Perfect! The label was just used to have something to repaint and show AJAX was working! The whole thing was intended to provide an example of how to do something and not the "complete means" to achieve it. If you feel that will make the example more clear feel free to edit the Wiki page and add/change any information in there!
Best, Ernesto On Tue, Oct 6, 2009 at 1:35 PM, Giambalvo, Christian < [email protected]> wrote: > By the way, i changed it a bit and now i repaint the link instead of > repainting the label, so the label isn't needed. > > private final DocumentResourceListener documentResourceListener; > > private final MyPdfResource pdf; > > .......................... > final AjaxFallbackLink link = new AjaxFallbackLink(componentId) > { > private static final long serialVersionUID = > 8947164550163497764L; > > @Override > public void onClick(final AjaxRequestTarget target) { > if (target != null) { > target.addComponent(this); > } > final BillItem item = (BillItem) model.getObject(); > > try { > pdf.setAttachmentname(item.getBillNumber() + > ".pdf"); > pdf.setContent(PdfHelper.generatePdf(item)); > final String url = > BillDataviewPanel.this.documentResourceListener.getURL().toString(); > target.appendJavascript("window.location.href='" > + url + "';"); > } catch (final Exception e) { > Logger.error(e); > } > > } > }; > .......................... > > this.documentResourceListener = new > DocumentResourceListener("listener", this.pdf); > this.add(this.documentResourceListener); > > And i changed MyPdfResource tob e more flexible; > > public class MyPdfResource extends DynamicWebResource { > > private byte[] content = null; > > private String attachmentname = null; > > public String getAttachmentname() { > return this.attachmentname; > } > > @Override > protected ResourceState getResourceState() { > return new ResourceState() { > @Override > public String getContentType() { > return "application/pdf"; > } > > @Override > public byte[] getData() { > try { > return MyPdfResource.this.content; > } catch (final Exception e) { > return null; > } > } > }; > } > > public void setAttachmentname(final String name) { > this.attachmentname = name; > } > > public void setContent(final byte[] content) { > this.content = content; > } > > @Override > protected void setHeaders(final WebResponse response) { > super.setHeaders(response); > response.setAttachmentHeader(this.attachmentname); > } > } > > Mit freundlichen Grüßen > Christian Giambalvo > -- > Fachinformatiker für Anwendungsentwicklung > > EXCELSIS Informationssysteme GmbH > Wilhelmsplatz 8 - 70182 Stuttgart > Mobile +49 176 196 32 406 > Office +49 711 6 20 30 406 > [email protected] > www.excelsisnet.com > www.twitter.com/excelsis_info > > Sitz Stuttgart > Amtsgericht Stuttgart, HRB 21104 > Geschäftsführer: Christian Sauter, Dr. Nils Herda, Frank Wolf > > > -----Ursprüngliche Nachricht----- > Von: Ernesto Reinaldo Barreiro [mailto:[email protected]] > Gesendet: Dienstag, 6. Oktober 2009 13:18 > An: [email protected] > Betreff: Re: Send file to client via Ajax > > Done! > > http://cwiki.apache.org/confluence/display/WICKET/AJAX+update+and+file+download+in+one+blow > > < > http://cwiki.apache.org/confluence/display/WICKET/AJAX+update+and+file+download+in+one+blow > > > Ernesto > > On Tue, Oct 6, 2009 at 12:15 PM, Giambalvo, Christian < > [email protected]> wrote: > > > Yes, please add it. > > > > Mit freundlichen Grüßen > > Christian Giambalvo > > -- > > Fachinformatiker für Anwendungsentwicklung > > > > EXCELSIS Informationssysteme GmbH > > Wilhelmsplatz 8 - 70182 Stuttgart > > Mobile +49 176 196 32 406 > > Office +49 711 6 20 30 406 > > [email protected] > > www.excelsisnet.com > > www.twitter.com/excelsis_info > > > > Sitz Stuttgart > > Amtsgericht Stuttgart, HRB 21104 > > Geschäftsführer: Christian Sauter, Dr. Nils Herda, Frank Wolf > > > > > > -----Ursprüngliche Nachricht----- > > Von: Ernesto Reinaldo Barreiro [mailto:[email protected]] > > Gesendet: Dienstag, 6. Oktober 2009 11:48 > > An: [email protected] > > Betreff: Re: Send file to client via Ajax > > > > Nice to hear it was of some help! I have learned a bit too while doing > > it:-) > > Cheers, > > > > Ernesto > > > > P.S. Shall I add this to a Wiki page?... when I find the time;-) > > > > On Tue, Oct 6, 2009 at 11:39 AM, Giambalvo, Christian < > > [email protected]> wrote: > > > > > Works like a charm. > > > I think i've learned something about resource download via ajax. > > > Thanks for hat. > > > > > > > > > Mit freundlichen Grüßen > > > Christian Giambalvo > > > -- > > > Fachinformatiker für Anwendungsentwicklung > > > > > > EXCELSIS Informationssysteme GmbH > > > Wilhelmsplatz 8 - 70182 Stuttgart > > > Mobile +49 176 196 32 406 > > > Office +49 711 6 20 30 406 > > > [email protected] > > > www.excelsisnet.com > > > www.twitter.com/excelsis_info > > > > > > Sitz Stuttgart > > > Amtsgericht Stuttgart, HRB 21104 > > > Geschäftsführer: Christian Sauter, Dr. Nils Herda, Frank Wolf > > > > > > -----Ursprüngliche Nachricht----- > > > Von: Ernesto Reinaldo Barreiro [mailto:[email protected]] > > > Gesendet: Dienstag, 6. Oktober 2009 11:31 > > > An: [email protected] > > > Betreff: Re: Send file to client via Ajax > > > > > > Just sent it on my last e-mail! Here it is again! > > > import org.apache.wicket.IResourceListener; > > > import org.apache.wicket.markup.html.WebMarkupContainer; > > > > > > /** > > > * @author Ernesto Reinaldo Barreiro ([email protected]) > > > * > > > */ > > > public class DocumentResourceListener extends WebMarkupContainer > > implements > > > IResourceListener > > > { > > > private static final long serialVersionUID = 1L; > > > private IResourceListener resourceListener; > > > > > > /** > > > * Constructor receiving an IResourceListener.. > > > * > > > * @param id > > > * @param resourceListener > > > */ > > > public DocumentResourceListener(final String id, IResourceListener > > > resourceListener) > > > { > > > super(id); > > > this.resourceListener = resourceListener; > > > } > > > > > > /** > > > * Gets the url to use for this link. > > > * > > > * @return The URL that this link links to > > > */ > > > protected CharSequence getURL() > > > { > > > return urlFor(IResourceListener.INTERFACE); > > > } > > > > > > > > > @Override > > > protected boolean getStatelessHint() > > > { > > > return false; > > > } > > > public void onResourceRequested() { > > > this.resourceListener.onResourceRequested(); > > > } > > > } > > > > > > This is just a trick to have component that generates file contents on > > the > > > same page! I think you could used mounted resources as well, or just a > > > dedicated servlet if you want to get file generation out of wicket! > > > > > > Best, > > > > > > Ernesto > > > > > > On Tue, Oct 6, 2009 at 11:24 AM, Giambalvo, Christian < > > > [email protected]> wrote: > > > > > > > Yes it would be usefull. > > > > But where does DocumentResourceListener came from? > > > > I'm using wicket 1.3.6 and DocumentResourceListener is not available. > > > > > > > > Thanks > > > > > > > > Mit freundlichen Grüßen > > > > Christian Giambalvo > > > > -- > > > > Fachinformatiker für Anwendungsentwicklung > > > > > > > > EXCELSIS Informationssysteme GmbH > > > > Wilhelmsplatz 8 - 70182 Stuttgart > > > > Mobile +49 176 196 32 406 > > > > Office +49 711 6 20 30 406 > > > > [email protected] > > > > www.excelsisnet.com > > > > > > > > Sitz Stuttgart > > > > Amtsgericht Stuttgart, HRB 21104 > > > > Geschäftsführer: Christian Sauter, Dr. Nils Herda, Frank Wolf > > > > > > > > > > > > -----Ursprüngliche Nachricht----- > > > > Von: Ernesto Reinaldo Barreiro [mailto:[email protected]] > > > > Gesendet: Dienstag, 6. Oktober 2009 09:54 > > > > An: [email protected] > > > > Betreff: Re: Send file to client via Ajax > > > > > > > > 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 ([email protected]) > > > > * > > > > */ > > > > 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 ([email protected]) > > > > * > > > > */ > > > > 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? > > > > > > > > --------------------------------------------------------------------- > > > > To unsubscribe, e-mail: [email protected] > > > > For additional commands, e-mail: [email protected] > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: [email protected] > > > For additional commands, e-mail: [email protected] > > > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [email protected] > > For additional commands, e-mail: [email protected] > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
