Re[2]: [cgmo-webcgm] WebCGM and the <object> tag

[Benoit Bezaire <benoit@itedo.com>]

Hi all,

I just want to clarify a few things.  It is pretty clear to me that
the compliant way of embedding foreign object into HTML is via the
<object> tag.  HTML defines the mechanism to load the appropriate
activeX or applet with the MIME type and 'data' attribute. WebCGM and
SVG make the same statements and our test suite should follow the
standard.

However, I do not believe that the development of a test suite should
be put on hold because viewers don't support 'data'.  We need to start
working on this thing soon. It will be a lot of work.  In my opinion,
'data' (or scripts like my proposed workaround -also compliant-) will
have to be used for the published test suite.

-- 
 Benoit   mailto:benoit@itedo.com


Tuesday, December 7, 2004, 2:49:47 AM, Dieter wrote:


DW> It is a subtle point, whether the WebCGM standard can place conformance
DW> requirements on HTML content that references WebCGM instances.  However the
DW> prescription in WebCGM (section 3.4) is unambiguous:

>>The only standard way to reference in-line CGMs from HTML documents is
>>through the OBJECT tag, using the DATA attribute for the CGM file and the
>>TYPE attribute to specify the full Mime Type. The minimal tag for adding
>>CGM into a document would be:
>><OBJECT DATA="xxx.cgm" TYPE="image/cgm;Version=4;ProfileId=WebCGM";
>>WIDTH=200; HEIGHT=100>

DW> -Lofton.

DW> I agree, but I think the wording is not really clear enough.
DW> What does "reference" mean?
DW> An OBJECT tag is an integral portion of the HTML content, so it is included
DW> in the document. it uses parameters that point to a MIME type and to
DW> a CGM file.
DW> This is NOT an inline CGM in the sense as SVG does inline SVG.
DW> I agree that it is difficult to place conformance requirements on HTML, how
DW> does SVG do it?
DW> What if there is only an href in the HDML that is being clicked upon, and
DW> the
DW> result is a new window with a viewer it it WITHOUT an OBJECT tag?
DW> What if the src parameter of a window is set to point to a WebCGM file? Is
DW> this
DW> invalid?
DW> What if we use the DOM to steer this?

DW> Probably the best way to handle this variety of options is to say "viewers
DW> are expected
DW> to handle OBJECT tags with the following parameters" or similar.

DW> Ideas?