Re: [cgmo-webcgm] QUESTION. Can viewers detect links from non-CGM content?

[Lofton Henderson <lofton@rockynet.com>]

At 04:59 PM 10/6/2005 -0400, Benoit Bezaire wrote:
>Was this discussed at a telecon or did we simply not get any responses
>yet?

Not discussed yet in any telecon that I can remember.

This came out of Rob's Ch.3 review, which (I'm told) was deferred yesterday 
until next telecon.  (And so I broke out the potentially non-trivial bits 
for email discussion and closure at next telecon.)

-Lofton.


>--
>  Benoit   mailto:benoit@itedo.com
>
>
>Thursday, October 6, 2005, 12:10:52 PM, Lofton wrote:
>
>LH> Once again, it would be interesting to hear from implementors.  What have
>LH> you done about the 1.0 specification, "CGM viewers shall ignore picture
>LH> behavior specifications in URI fragments which are part of links from
>LH> non-CGM content."?
>
>LH> At 02:36 PM 10/5/2005 -0600, Robert Orosz wrote:
> >>[...]
> >>3) I do not have improved wording for this.  I raised the question because
> >>the current wording "CGM viewers shall ..." sounds to me like a conformance
> >>requirement being placed on the viewer.  I do not know the answer, and 
> I too
> >>have never programmed that part of a viewer before.  If the viewer cannot
> >>determine the source of a link, then that sentence should be deleted.
> >>[...]
> >>
> >>-----Original Message-----
> >>From: Lofton Henderson [mailto:lofton@rockynet.com]
> >>Sent: Tuesday, October 04, 2005 7:08 PM
> >>To: Robert Orosz; cgmo-webcgm@lists.oasis-open.org
> >>Subject: Re: [cgmo-webcgm] Chapter 3 review
> >>
> >>[...]
> >> >
> >> >Section 3.1.2.2
> >> >
> >> >In the middle of this section is the following statement: "CGM viewers
> >>shall
> >> >ignore picture behavior specifications in URI fragments which are part of
> >> >links from non-CGM content."  I'm curious, how does the CGM viewer 
> know the
> >> >source of a link?
> >>
> >>Good question.  I don't know the answer.  What would happen is probably
> >>something like this:  a viewer control/plugin is fired up to display the
> >>CGM specified in the HTML-to-CGM link.  If the HTML contains the behavior
> >>in the 'target' attribute of the 'a' element, it does all the implied
> >>window management and starts the viewer.  It gets a fragment.  If the
> >>fragment contains a picBehavior part, then the viewer would immediately be
> >>faced with some potential windowing operation, like opening a new window
> >>(_blank).  I can see what the original wording is trying to avoid, but
> >>don't know if we're saying it best.  (And I haven't programmed this part of
> >>a viewer -- the control/plugin interface and window management.)
>
>LH> -Lofton.