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Skip link workarounds for Chrome and IE

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Add tabindex="-1" to main #content to work around bug in Chrome (and old
WebKits) and IE
Update advice in accessibility section
Include patch in docs CSS to suppress outline when #content is focused
(particularly as Chrome sets focus as result of mouse click for
tabindex="-1" elements)
This commit is contained in:
Patrick H. Lauke
2015-01-31 11:19:19 +00:00
parent 4d4c7c4051
commit c0892d1470
4 changed files with 13 additions and 3 deletions
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docs/_includes/getting-started/accessibility.html
+6 -1
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@@ -4,11 +4,16 @@
<h3>Skip navigation</h3>
<p>If your navigation contains many links and comes before the main content in the DOM, add a <code>Skip to main content</code> link before the navigation <a href="http://a11yproject.com/posts/skip-nav-links/">(read why)</a>. Using the <code>.sr-only</code> class will visually hide the skip link, and the <code>.sr-only-focusable</code> class will ensure that the link becomes visible once focused (for sighted keyboard users).</p>
<div class="bs-callout bs-callout-danger" id="callout-tables-striped-ie8">
<p>Due to a long-standing <a href="https://code.google.com/p/chromium/issues/detail?id=262171" title="Chromium bug tracker - Issue 262171: Focus should cycle from named anchor">bug in Chrome</a> and Internet Explorer, you will need to make sure that the target of your skip link is at least programmatically focusable by adding <code>tabindex="-1"</code>.</p>
<p>In addition, you may want to explicitly suppress a visible focus indication on the target (particularly as Chrome currently also sets focus on elements with <code>tabindex="-1"</code> when they are clicked with the mouse) with <code>#content:focus { outline: none; }</code>.</p>
<p>Note that this bug will also affect any other in-page links your site may be using, rendering them useless for keyboard users. You may consider adding a similar stop-gap fix to all other named anchors / fragment identifiers that act as link targets.</p>
</div>
{% highlight html %}
<body>
<a href="#content" class="sr-only sr-only-focusable">Skip to main content</a>
...
<div class="container" id="content">
<div class="container" id="content" tabindex="-1">
<!-- The main page content -->
</div>
</body>