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Quick Lists
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Bug ID:
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4638136
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Votes
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0
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Synopsis
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stddoclet: Add ability to skip over nav bar for accessibility
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Category
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doclet:tbd
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Reported Against
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merlin-rc1
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Release Fixed
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1.4.2(mantis)
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State
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10-Fix Delivered,
request for enhancement
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Priority:
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4-Low
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Related Bugs
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Submit Date
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14-FEB-2002
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Description
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.Skip navigation links
Accessibility Priority 3
Section 508 1194.22(o)
"A method shall be provided that permits users to skip
repetitive navigation links."
W3C Checkpoint 13.6
http://www.w3.org/TR/WCAG10-HTML-TECHS/#group-bypass
Note that the Sun Accessibility Program Office says:
"These jump-to links can be made invisibl" (sic)
Source: http://solaris.eng/accessibility/508_friendly/preamble.html#1194.22o
When running Dreamweaver test on javadoc, it
requests a means for speech synthesizers to skip
over the navigation bar in one or more of these ways:
- Include a link that allows users to skip over the
set of navigation links.
- Provide a style sheet that allows users to hide the
set of navigation links.
- Use the HTML 4.01 MAP element to group links, then
identify the group with the "title" attribute
In the first choice, the skip link does not need to be visible.
We can use a hypertext link with no text: <A HREF="#skip"></A>.
The second choice seems rather burdensome for the user,
as they would need to load that style sheet.
Because the navigation bar is in a table, we could just
mark the table with alternate text, rather than use a
map.
We could put <MAP> around the table. This is the example they give:
<BODY>
<MAP title="Navigation Bar">
<P>
[<A href="#how">Bypass navigation bar</A>]
[<A href="home.html">Home</A>]
[<A href="search.html">Search</A>]
[<A href="new.html">New and highlighted</A>]
[<A href="sitemap.html">Site map</A>]
</P>
</MAP>
<H1><A name="how">How to use our site</A></H1>
<!-- content of page -->
</BODY>
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Work Around
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======================================================================
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Evaluation
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Needed for 508 accessibility compliance
xxxxx@xxxxx 2002-02-14
I think we have a case that the a"title" attribute
be used in a link to skip over a navigation bar
(in Javadoc HTML pages):
<a href="#skip" title="Skip navigation bar"></a>
The navigation links are already grouped by way of being
contained in a table.
This is simpler and more straightforward than combining
<MAP> with a link that is recommended by W3C:
<MAP title="Navigation bar">
<a href="#skip"></a>
</MAP
source: http://www.w3.org/TR/WCAG10-HTML-TECHS/#group-bypass
It is also simpler than including a one-pixel image simply
for the sake of using the "alt" attribute:
<a href="#skip"><img src="pixel.gif" alt="Skip navigation bar"></a>
These facts support this case:
1) 508 accessibility already identifies the "title" attribute as suitable
for accessibility text for <FRAME> and <MAP> elements.
Source: http://www.w3.org/TR/WCAG10-HTML-TECHS/#frame-names
Source: http://www.w3.org/TR/WCAG10-HTML-TECHS/#group-bypass
2) The W3C description of the title attribute gives the very example
of an audio user agent speaking the title information for a link,
as follows:
Audio user agents may speak the title information in a similar
context. For example, setting the attribute on a link allows
user agents (visual and non-visual) to tell users about the
nature of the linked resource:
...some text...
Here's a photo of
<A href="http://someplace.com/neatstuff.gif" title="Me scuba diving">
me scuba diving last summer
</A>
...some more text...
Source: http://www.w3.org/TR/html401/struct/global.html#adef-title
3) The W3C gives the following example of an empty named anchor tag:
"Note. User agents should be able to find anchors created by
empty A elements, but some fail to do so. For example, some
user agents may not find the "empty-anchor" in the following
HTML fragment:"
<A name="empty-anchor"></A>
<EM>...some HTML...</EM>
<A href="#empty-anchor">Link to empty anchor</A>
4) I tested this with JAWS reader on Windows, and it works fine.
The default configuration is to read title attributes in links.
It says: "Link skip navigation bar" and pauses. If you press
Enter, it skips over the navigation bar and continues speaking.
xxxxx@xxxxx 2002-08-22
Also note that the following construct, where the content in <a>
elements is empty. is valid HTML 4.0:
<a href="#skip" title="Skip navigation bar"></a>
[navigation bar]
<a name="skip"></a>
The DTD for the <A> element follows. The content model includes (&inline;)*,
which means zero or more terms (and -(A) means nested anchor tag disallowed).
Also, in all cases, "no content" can satisfy #PCDATA.
The inclusion of the attribute "name" or "href" cannot change this content model.
<!ELEMENT A - - (%inline;)* -(A) -- anchor -->
<!ATTLIST A
...
name CDATA #IMPLIED -- named link end --
href %URI; #IMPLIED -- URI for linked resource --
...
>
<!ENTITY % inline "#PCDATA | %fontstyle; | %phrase; | %special; | %formctrl;">
Source: http://www.w3.org/TR/REC-html40/struct/links.html#edef-A
xxxxx@xxxxx 2002-08-25
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Comments
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PLEASE NOTE: JDK6 is formerly known as Project Mustang
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