Dynamically serving contents for an iFrame

Hi there,

I am having trouble changing the contents of an iFrame with contents are
generated "dynamically".

What I want the page to do is change the contents of an iFrame when the
user clicks a link. There is an unorderedList of links that each
represent a document that can be displayed in the iFrame. The use of
iFrames seems to be the only way to display PDF documents inline in the
document.

Here is how far I got after quite some fiddling and trial&error:

first, in my renderContentOn: I bind an onclick handler to each link
that updates the src attribute of the iFrame:

     fileCallback :=

         html callbacks store: (WAActionCallback on: [self deliverFile]).

     html document addLoadScript: (

         '$(".documentLink").each(function(idx) {$(this).click(function(event){

                 $(".documentView iFrame").attr("src", "%1" + "&file=" + $(this).text());

                 event.preventDefault();})})'

             bindWith: (html actionUrl withField: fileCallback))



The callback method looks like this:

deliverFile

     |  dateiName fields req aWAFile response document |

     req := self requestContext request.

     fields := req fields.

     dateiName := (fields at: 'file').

     aWAFile := "stuff that fetches the WAFile from a DB"

     

     self requestContext respond: [:resp |

         resp

             document: aWAFile contents mimeType: aWAFile contentType fileName: aWAFile fileName]


This almost works.

When I click on the link, the src attribute of the iframe is being
updated and the callback method is invoked. The file is served and is
exactly the PDF document I expect.

BUT: instead of the iframe updating with the contents, the web browser
asks me whether I want to save the file or open it with an some local
application. That is of course not the expected behavior.


I see two areas which could be wrong:

a) The way the callback method changes the response to server the images
/ pdfs
   I found some old messages on this list
(http://forum.world.st/Usage-of-WAIframeTag-tp88208.html) that use
returnResponse: , which is deprecated and even is not present in Pharo 3
any more.

b) the way I try to update the iframe by changing its src attribute

     If I use set a static url in the .attr("src", someStaticUrl), the
new contents are shown as expected, so I guess the problem lies in the
callback somewhere...

Any ideas?


Joachim



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On Tue, May 12, 2015 at 4:25 PM, [hidden email]
<[hidden email]> wrote:
Have you tried the following HTTP header

Content-Disposition: inline

Cheers
Philippe
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H iPhilippe,

once again you nailed it.

At first it didn't work when I did this:


     self requestContext respond: [:resp |
         resp
             inlineWithFileName: aWAFile fileName;
             document: aWAFile contents mimeType: aWAFile contentType
fileName: aWAFile fileName;
             doNotCache]

Then I tried:

     self requestContext respond: [:resp |
         resp
             inlineWithFileName: aWAFile fileName;
             document: aWAFile contents mimeType: aWAFile contentType;
             doNotCache]


And it does work now.


In the first situation the Content-Disposition header was always
"attachment; filename=".
I'm not sure if that is a bug or not. Just wanted to let you know.

Again: Thank you very much!!!

Maybe we can have some Vino in Brescia? At least one glass is on me!


Joachim





Am 12.05.15 um 19:27 schrieb Philippe Marschall:

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Objektfabrik Joachim Tuchel          mailto:[hidden email]
Fliederweg 1                         http://www.objektfabrik.de
D-71640 Ludwigsburg                  http://joachimtuchel.wordpress.com
Telefon: +49 7141 56 10 86 0         Fax: +49 7141 56 10 86 1

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On Tue, May 12, 2015 at 9:07 PM, [hidden email]
<[hidden email]> wrote:
This is a feature. "attachment" causes the download dialog to open,
"inline" just displays it. #fileName: triggers "attachement;
filename=".

> Again: Thank you very much!!!
>
> Maybe we can have some Vino in Brescia? At least one glass is on me!

:-)

Cheers
Philippe
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