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RE: Copy-paste and ATAG2 B.1.2.1 Restructuring and Recoding Transformations

From: Richards, Jan <jrichards@ocadu.ca>
Date: Sun, 5 Feb 2012 05:42:39 +0000
To: "w3c-wai-au@w3.org" <w3c-wai-au@w3.org>
Message-ID: <0B1EB1C972BCB740B522ACBCD5F48DEB03A324E4@ocadmail-maildb.ocad.ca>
Sorry for the delay on this...

(Alastair: Maybe you and I can discuss your email earlier on Monday. I'm not sure what you are suggesting.)

My updated proposals around B.1.2 and copy-paste (completely replacing the previous proposal: http://lists.w3.org/Archives/Public/w3c-wai-au/2012JanMar/0017.html):

 [1] A note is added to the end of the glossary definition of "content transformations":
content transformations: Processes that take content in one web content technology or non-web content technology (e.g., a word processing format) as input and produce content that has been optimized, restructured or recoded:
...
"NOTE: Clipboard operations, in which content is copied to or pasted from the platform clipboard, are not considered content transformations."

 [2] A note is added to B.1.2.1 referring to the special case of text alternatives for non-text content (B.1.2.3)

- If the input includes accessibility information, and the output can include that information, at least one of the following is true: 
(With the a-d from "Restructuring and Recoding Transformations" according to WCAG).


[3] Rewording (c) to be clear that it applies only if the session remains open. Also, added note 2 and note 3 which allowed (c) and (d) to be combined.

B.1.2.1 Restructuring and Recoding Transformations (WCAG): If the authoring tool provides restructuring transformations or re-coding transformations, then at least one of the following is true: (Level A to meet WCAG 2.0 Level A success criteria; Level AA to meet WCAG 2.0 Level A and AA success criteria; Level AAA to meet all WCAG 2.0 success criteria)
(a) Preserve: Accessibility information (WCAG) is preserved in the output; or
(b) Warning: Authors have the default option to be warned that accessibility information may be lost (e.g., when saving a vector graphic into a raster image format); or
(c) Checking: If the authoring session continues after the transformation, accessibility checking is performed.
Note 1: For text alternatives for non-text content, see success criterion B.1.2.4.
Note 2: This success criteria only applies to transformations in which the output technology is "included" for conformance.
Note 3: Depending on the degree to which accessibility checking is automated, Option (c) can refer to automatic checking or prompting the author to perform a manual check.


[4] B.1.2.2 stays the same but is renumbered

B.1.2.3 Optimizing Transformations Preserve Accessibility: If the authoring tool provides optimizing transformations, then any accessibility information (WCAG) in the input is preserved in the output. (Level A)


[5] B.1.2.3 gets numbered B.1.2.4 and gets the same "included" technology Note as B.1.2.1

B.1.2.4 Text Alternatives for Non-Text Content are Preserved: If the authoring tool provides restructuring or recoding transformations that preserve non-text content in the output, then any text alternatives for that non-text content are also preserved, if equivalent mechanisms exist in the web content technology of the output. (Level A).
Note: This success criteria only applies when the output technology is "included" for conformance.


[6] A new SC is added to address preservation during "internal" copy-paste:

B.1.2.2 Copy-Paste Inside Authoring Tool: If the authoring tool provides for copy-paste of *structured content* within the authoring tool, then any accessibility information (WCAG) in the copied content is preserved. (Level A to meet WCAG 2.0 Level A success criteria; Level AA to meet WCAG 2.0 Level A and AA success criteria; Level AAA to meet all WCAG 2.0 success criteria)

Ed. Since the smart way to implement a structured content copy-paste feature on a platform with a structure content clipboard (e.g. HTML format) is to make use of it, this requirement will likely mean that all copy-pastes operations using the structured platform clipboard will preserve accessibility info.



(MR) JAN RICHARDS
PROJECT MANAGER
INCLUSIVE DESIGN RESEARCH CENTRE (IDRC)

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Received on Sunday, 5 February 2012 05:43:03 GMT

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