RE: Request For Feedback: Traits

Hi, all-

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Regards-
Doug Schepers,
on behalf of the SVG Working Group

doug.schepers@vectoreal.com
www.vectoreal.com ...for scalable solutions.
 

Doug Schepers wrote:
| 
| Hi-
| 
| The SVG WG is interested in soliciting opinions, particularly from
| implementors, about the 'traits' feature of the SVG uDOM. 
| 
| You can find a detailed description of the traits interface 
| throughout the
| current draft of the uDOM [1], and in specific in section 
| A.7.12 TraitAccess
| [2].
| 
| The SVG WG feels that this interface addresses many 
| author-requested needs,
| including the ability to access and set the animated or 
| computed value of an
| attribute, and to access individual components of 
| microsyntaces such as the
| numbers in rgb(0,0,0) and the path segments in a 'path' element's 'd'
| attribute [3]. It also provides strong typing, which is useful even in
| weakly-typed languages like EcmaScript since it can 
| distinguish between
| booleans, strings, and numbers (a useful feature for those 
| who script SVG,
| since DOM methods only return strings), and provides clear exception
| messages for erroneous trait values, allowing for ease in 
| debugging. The SVG
| WG does not feel that it is a redundant feature to DOM 3, but 
| is rather
| complementary. 
| 
| Any criticism (or praise) of the 'traits' feature is very 
| welcome. We are
| especially interested in whether you see value in providing 
| this mechanism
| beyond the scope of Java, such as in EcmaScript, C#, or other 
| languages. If
| there are particular features that you feel are inappropriate or that
| conflict with other specifications (such as DOM 3), and which 
| would prevent
| your adoption of 'traits', we encourage descriptions of those 
| issues along
| with proposed resolutions.
| 
| [1] http://www.w3.org/TR/2005/WD-SVGMobile12-20051207/svgudom.html
| [2]
| http://www.w3.org/TR/2005/WD-SVGMobile12-20051207/svgudom.html
| #svg::TraitAcc
| ess
| [3]
| http://www.w3.org/TR/2005/WD-SVGMobile12-20051207/svgudom.html
| #Attribute_Nor
| malization
| 
| Regards-
| Doug Schepers,
| on behalf of the SVG Working Group
| 
| doug.schepers@vectoreal.com
| www.vectoreal.com ...for scalable solutions.
|

Received on Wednesday, 4 January 2006 06:14:04 UTC