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a11y: Make backlink label start with name

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The WCAG "label in name" SC requires visible labels to contain
accessible names, preferably by having accessible names start with
visible labels. This commit makes footnote backlinks display as a
hyperlink reading "Back" to meet this SC.
This commit is contained in:
Rohan Kumar 2022-07-11 15:18:15 -07:00
parent f0a91d2678
commit 9d4f18ffde
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GPG key ID: 1E892DB2A5F84479
2 changed files with 6 additions and 10 deletions
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12
assets/css/main.css
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@ -172,15 +172,11 @@ html {
margin: .25em;
}
/* Increase backlink tap target size */
/* Increase backlink tap target size to at least 48x48 */
a[role="doc-backlink"] {
padding: 0 1.75em 1.5em .25em;
}
/* Make room for those big backlink buttons so they don't overlap
* with links on the following endnote */
section[role="doc-endnotes"] li {
margin-bottom: 1.75em;
display: inline-block;
margin-left: -.5em;
padding: .75em .5em;
}
/* skip link: make it invisible until focused, and put it on the top. */

4
layouts/partials/processed-content.html
View file

@ -45,14 +45,14 @@
<!--Give footnote backlinks accessible names-->
{{- $footnoteBacklinksBad := `<a href="#fnref:([0-9]*)" class="footnote-backref"(.*role="doc-backlink"(?:[^>]*)?)>([^<]*)` -}}
{{- $footnoteBacklinksGood := `<a href="#fnref:${1}" aria-labelledby="bl-${1}"${2}>${3} <span id="bl-${1}" hidden="">back to reference ${1}</span>` -}}
{{- $footnoteBacklinksGood := `<br /><a href="#fnref:${1}" aria-labelledby="bl1-${1} bl2-${1}"${2}><span id="bl1-${1}">Back</span><span id="bl2-${1}" hidden=""> to reference ${1}</span>` -}}
<!--
If two backlinks exist, give them different names.
I currently don't have any triple backlinks; if I ever do, I'll implement this properly with a loop.
-->
{{- $repeatedFootnoteBacklinksBad := `<a href="#fnref([0-9]):([0-9]*)"(.*role="doc-backlink"(?:[^>]*)?)>([^<]*)` -}}
{{- $repeatedFootnoteBacklinksGood := `<a href="#fnref${1}:${2}" aria-labelledby="bl-${2}-2"${3}>${4} <span id="bl-${2}-2" hidden="">back to reference ${2}, instance 2</span>` -}}
{{- $repeatedFootnoteBacklinksGood := `<br /><a href="#fnref${1}:${2}" aria-labelledby="bl1-${2}-2 bl2-${2}-2"${3}><span id="bl1-${2}-2">Back</span><span id="bl2-${2}-2" hidden=""> to reference ${2}, instance 2</span>` -}}
<!--Make endnotes focusable by ATs. Necessary for VoiceOver compatibility.-->
{{- $endNotesNotFocusable := `<li id="fn:([0-9]*)">` -}}