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

[Dieter Weidenbrück <dieter@itedo.com>]

At least I can respond to this.

The viewer has to go through the excercise of retrieving the # fragment
itself,
thus it can easily ignore the picture behavior, which is what we do.
As the viewer knows exactly whether the fragment comes from an open CGM or
from
somewhere else, it doesn't constitute a problem to make the right decisions
about
ignoring.

Dieter 

> -----Original Message-----
> From: Benoit Bezaire [mailto:benoit@itedo.com] 
> Sent: Thursday, October 06, 2005 10:59 PM
> To: cgmo-webcgm@lists.oasis-open.org
> Subject: Re: [cgmo-webcgm] QUESTION. Can viewers detect links 
> from non-CGM content?
> 
> Was this discussed at a telecon or did we simply not get any 
> responses yet?
> 
> -- 
>  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 
> LH> have you done about the 1.0 specification, "CGM viewers 
> shall ignore 
> LH> picture behavior specifications in URI fragments which 
> are part of 
> LH> links from 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.
> 
> 
>