ISSUE-2064

type or typeof

type or typeof?

State:

CLOSED

Product:

SVG 1.2 Tiny: Last Call

Raised by:

Doug Schepers

Opened on:

2008-09-21

Description:

Dr. Olaf Hoffmann
<http://lists.w3.org/Archives/Public/www-svg/2008Sep/0089.html>:
[[
elements like image, audio, video have a 'type' attribute.
This attribute is not animatable and as far as I understand
the data type <content-type> it can only represent one
type. Because xlink:href of those elements is animatable,
the content type can be time dependent. 
'type' does not care about this problem and if authors want 
to give a hint, this is not possible with 'type' for those 
animations.
'typeof' (5.10.1) can both contain more than one type and is 
animatable, therefore this solves the problem, but then the 
'type' is redundant and could be skipped.
If 'typeof' is intended for something different
(for example in some programming languages there
is a typeof operator available with another meaning, the
word 'datatype' may indicate something like this, but
a content type still may be a specific data type, therefore
this usage seems not to be excluded), then the problem of 
type and animation remains and it is not obvious, what the 
purpose of 'typeof' could be - the 'type' problem needs to 
be solved and 'typeof' needs a better description about the 
purpose of this attribute to avoid confusion with 'type'. 
]]

Related Actions Items:

• ACTION-2213 on Erik Dahlström to Make the type attribute animatable for types - due 2008-09-30, closed
• ACTION-2225 on Doug Schepers to Clarify the metadata attributes - due 2008-10-02, closed

Related emails:

1. SVG/profiles/1.2T doc-svgt12.html,NONE,1.1 (from cvsmail@w3.org on 2008-10-28)
2. Re: [1.2T-LC] type or typeof? (ISSUE-2064) (from Dr.O.Hoffmann@gmx.de on 2008-10-10)
3. Re: [1.2T-LC] type or typeof? (ISSUE-2064) (from schepers@w3.org on 2008-10-10)
4. Minutes, SVG telcon Thursday 9 October 2008 (from anthony.grasso@cisra.canon.com.au on 2008-10-09)
5. Minutes, SVG telcon Tuesday 23 September 2008 (from anthony.grasso@cisra.canon.com.au on 2008-09-23)
6. Minutes, SVG telcon Tuesday 23 September 2008 (from anthony.grasso@cisra.canon.com.au on 2008-09-23)
7. Re: [1.2T-LC] type or typeof? (ISSUE-2064) (from schepers@w3.org on 2008-09-21)
8. ISSUE-2064 (type or typeof): type or typeof? [Last Call: SVG 1.2 Tiny ] (from sysbot+tracker@w3.org on 2008-09-21)

Related notes:

Display change log.