loosing form or form data when creating pdf

> Hi all,
> I'm having the following problem:
> I've built a form in which I let the user fill in a lot of data. At the end
> of the form, I present a button that renders a 'pdf' of the form.
> I use the submit funtionality like this:
>             <xforms:submission
>                 id = "print-pdf-submission"
>                 ref = "instance('form-instance')/formcontent"
>                 xxforms:show-progress = "false"
>                 method = "post"
>                 action = "/e-formulieren/pdf"
>                 replace = "all">
> The action point to a xpl that directs to a custom processor, that creates a
> pdf and returns the bytearray back to the outputstream of the response, like
> this:
>             ExternalContext externalContext = (ExternalContext) context
>
>  .getAttribute(org.orbeon.oxf.pipeline.api.PipelineContext.EXTERNAL_CONTEXT);
>             ExternalContext.Response response =
> externalContext.getResponse();
>             response.setContentType("application/pdf");
>             OutputStream out = response.getOutputStream();
>             out.flush();
>             // build PDF
>             PDFBuilder pdfBuilder = (PDFBuilder)
> CustomOverviewBuilderFactory.getOverviewBuilder(OverviewProperties.PROP_PDF_BUILDER);
>             ByteArrayOutputStream pdf = (ByteArrayOutputStream)
> pdfBuilder.buildOverview(inputDocument);
>             // write the pdf
>             out.write(pdf.toByteArray());
> This works great, but I experience the following things:
> - in IE (8), hitting the pdf button results in showing the pdf file, but
> when I hit the back button of the browser, I am directed to the page that
> was active before the form. So, I loose the form! And all data of course...
> just by wanting the see the form in a pdf format.
> - in Firefox (3.6) all works fine... hitting the back button when the pdf is
> loaded in the browser, loads the form again with all data filled in.
> So, I think I change the submission to:
>             <xforms:submission
>                 id = "print-pdf-submission"
>                 ref = "instance('form-instance')/formcontent"
>                 xxforms:show-progress = "false"
>                 method = "post"
>                 action = "/e-formulieren/pdf"
>                 replace = "all"
>                 xxforms:target = "_blank">
> this way, the pdf form tries to open in a new window. I cannot rely on the
> user having the pop-up blocker turned off, so I turn on mine and now I
> experience the following things:
> - in Firefox, I get a javascript error message! See the jpg I attached...
> Clicking this error message away, allowing pop-ups and retry to ope the pdf
> works fine... but I have to click the error message away, which is not good
> :-(
> - in IE (8), the pop-up blocker also nicely catches the try to open the pdf
> (no javascript error message), but when I allow the pop-ups, IE refreshes I
> form! And all data is gone!
> Well, here come the questions:
> - is there anybody around that experienced the same thing(s) with pop-up
> blocking?
> - is there anybody around that experienced the same thing(s) with page
> refreshing when you don't want to?
> or maybe even more helpful:
> - is there anybody around that built a form that delivers the functionality
> to view the form in a pdf and solved the problem I experience? For answering
> this with yes, please take into account that I really need to build the pdf
> with a java class, so a custom processor, that puts the pdf back on the
> response. Or can this be done otherwise??
> Anybody having ideas?
> Best regards,
> Bart Ottenkamp
>
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