Hello

In the AJAXDownload class, the appended javascript "window.location.href..." 
will make the browser display a warning on top to prevent file download.
If I select the warning then try to download the file, it doesn't work, the 
file download dialog never popup.
The second time I trigger the download it works.

Anybody knowns a way to avoid browser warning without modifying browser options?

Or is there another way to initiate file download through ajax?

Thanks
Jonathan


Jonathan Proulx, Programmer Analyst /

bluberi gaming technologies inc.
Drummondville, Quebec Canada
819.475.5155 (telephone) 819.475.5156 (fax) bluberi.com

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-----Message d'origine-----


De : val360 [mailto:val_wic...@360works.com]
Envoyé : 3 décembre 2010 16:42
À : users@wicket.apache.org
Objet : Re: Initiating File Download through Ajax is not working


final AJAXDownload download = new AJAXDownload() {
  @Override
  protected IResourceStream getResourceStream() {
        return new FileResourceStream(theDatabase.getFile());
  }

  @Override
  protected String getFileName() {
        return theDatabase.getFile().getAbsoluteFile().getName();  //FIX!!! the
filename gets .html appended to it.
  }
};
add(download);

add( new AjaxLink("download") {
        public void onClick( AjaxRequestTarget target ) {
                if( theDatabase.isOpen() ) {
                        target.appendJavascript( "alert('The database is open, 
close or pause the
db first.');" );
                } else {
                        download.initiate( target );
                }
        }
});

And this class is unchanged:

import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.behavior.AbstractAjaxBehavior;
import
org.apache.wicket.request.target.resource.ResourceStreamRequestTarget;
import org.apache.wicket.util.resource.IResourceStream;

/**
 * @author Sven Meier
 * @author Ernesto Reinaldo Barreiro (reier...@gmail.com)
 */
public abstract class AJAXDownload extends AbstractAjaxBehavior
{
        /**
         * Call this method to initiate the download.
         */
        public void initiate(AjaxRequestTarget target)
        {
                CharSequence url = getCallbackUrl();

                target.appendJavascript("window.location.href='" + url + "'");
        }

        public void onRequest()
        {
                getComponent().getRequestCycle().setRequestTarget(
                                new 
ResourceStreamRequestTarget(getResourceStream(), getFileName()));
        }

        /**
         * @see ResourceStreamRequestTarget#getFileName()
         */
        protected String getFileName()
        {
                return null;
        }

        /**
         * Hook method providing the actual resource stream.
         */
        protected abstract IResourceStream getResourceStream();
}
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