Re: debugging XSLT in Firefox

"John J. Barton" <[email protected]> Tue, 22 May 2007 09:59:27 -0700
Newsgroups gmane.comp.mozilla.devel.layout.xslt
Message-ID <[email protected]>
Unfortunately the only thing I learned is that after an xslt page,
Firebug is broken for other pages as well. So after the testXSLT.xml
page is viewed, subsequent use of Firebug on HTML pages has empty HTML 
and DOM panels. Somehow an event handler is not being called to connect
Firebug to the page's window.

John.


Lucky wrote:
> Sure, as it seems the test i did used those files:
> Here, i piggy-back off the "load" event attempting to dispatch the 
> DOMContentLoaded.
> 
> You can also dupe out the transform, by simply renaming your .xml -> 
> .xhtml, but that no longer works for IE browser, etc.
> 
> Here, the contentType is being set via extension, and never listens to 
> the content @media stuff from XSLT processing-instruction it seems.
> 
> It's really a much bigger problem though, seeing how the Document never 
> gets initialized as being HTMLDocument will all collections, cookies, 
> blah, blah.
> 
> 
> 
> John J. Barton wrote:
>> I'd have to trace the window logic to tell you why. Do you have
>> a simple test case (or can you modify the one in
>> http://code.google.com/p/fbug/issues/detail?id=130
>> ?
>> John.
>>
>> Lucky wrote:
>>> I noticed that even dispatching the DOMContentLoaded event from the 
>>> xml+xsl transformed content would still not allow firebug to initialize?
>>>
>>>
>>> John J. Barton wrote:
>>>> Firebug is a Firefox Javascript debugger. I looked into why it fails
>>>> for XSLT.  Seems like the problem is that XSLT does not signal 
>>>> DOMContentLoaded, a known bug.  (See 
>>>> http://code.google.com/p/fbug/issues/detail?id=130)
>>>>
>>>> Does XSLT signal other events, similar to nsIWebProgressListener?
>>>>
>>>> Are there interfaces to probe the state of the transformation?
>>>>
>>>> Is there someone interested in XSLT who would like help extending 
>>>> Firebug to support it better?
>>>>
>>>> John.
>>>>
>>>> Mike wrote:
>>>>> How do people debug their XSLT under Firefox.  I got something working
>>>>> under xsltproc, but it fails occasionally on Firefox with the
>>>>> following error message:
>>>>>
>>>>> [Exception... "Component returned failure code: 0x80600004
>>>>> [nsIXSLTProcessor.transformToFragment]" nsresult: "0x80600004
>>>>> (<unknown>)" location: "JS frame :: <elided> :: anonymous :: line 155"
>>>>> data: no]
>>>>>
>>>>> which gives me no clue what happened.  Web searches on that error code
>>>>> don't turn up much either.
>>>>>
>>>>> Is there any way to get more useful error messages, or is there a more
>>>>> verbose version of the same XSLT engine that Firefox uses that I can
>>>>> run my stuff against?
>>>>>
>>>>> thanks,
>>>>> mike
>>>>>
> 
> 
> ------------------------------------------------------------------------
> 
> <?xml version="1.0"?>
> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
> <xsl:template match="/">
> <html>
> <body>
> <script type="text/javascript">
>   function handler(e) {
>     var evt = document.createEvent("MutationEvents");
>     evt.initMutationEvent("DOMContentLoaded", true, true, document, "", "", "", 0);
>     document.dispatchEvent(evt);
>   }
>   window.addEventListener("load", handler, false);
>   document.addEventListener("DOMContentLoaded", function(e) {
>     //alert(e.type)
>   }, false);
> </script>
> </body>
> </html>
> </xsl:template>
> </xsl:stylesheet>