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Add namefrom: heading. #2650

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17750f7
Add namefrom:heading again; Will year 6 be the year?
cookiecrook Oct 9, 2025
d0e22a5
backing out the region and form role changes based circumstances outl…
cookiecrook Oct 13, 2025
b19f0b9
m. hyphenation
cookiecrook Oct 20, 2025
47ef934
m. article typo based on the prior change from IDDFS to DFS.
cookiecrook Oct 20, 2025
0fcaeec
html aam updates for name from heading
scottaohara Oct 21, 2025
30a7f56
Apply suggestion from @jcsteh
scottaohara Oct 22, 2025
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4 changes: 4 additions & 0 deletions accname/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -646,6 +646,10 @@ <h4>Computation steps</h4>
</p>
</div>
</li>
<li id="comp_name_from_heading">
<em>Name From Heading:</em> Otherwise, if the <code>current node</code> has a role that supports <a class="specref" href="#namefromheading">nameFrom: heading</a>,
return the text alternative of the first descendant <a>element</a> node matching the role of <code>heading</code> in an <em>depth-first search.</em>
</li>
<li id="comp_name_from_content">
<span id="step2F"><!-- Don't link to this legacy numbered ID. --></span><em>Name From Content:</em> Otherwise, if the <code>current node's</code> <a class="termref">role</a> allows
<a class="specref" href="#namefromcontent">name from content</a>, or if the <code>current node</code> is referenced by <code>aria-labelledby</code>, <code>aria-describedby</code>, or
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39 changes: 33 additions & 6 deletions index.html
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Expand Up @@ -1265,15 +1265,27 @@ <h3>Name From</h3>
having the lowest precedence for specifying a text alternative.
</li>
<li>
contents: name comes from the text value of the <a>element</a> node. Although this might be allowed in addition to "author" in some <a>roles</a>, this is used in content only if higher
priority "author" features are not provided. Priority is defined by the <cite><a href="" class="accname">Accessible Name and Description Computation</a></cite> [[ACCNAME-1.2]].
heading: name comes from the text alternative of the first descendant <a>element</a> node (depth first search) matching the role of <code>heading</code> as defined in the AccName
computation algorithm for nameFrom: heading. Although "namefrom: heading" is allowed in addition to "namefrom: author" in some <a>roles</a>, "namefrom: heading" is used in content only
if higher priority "namefrom: author" features are not provided. Priority is defined by the <cite><a href="" class="accname">Accessible Name and Description Computation</a></cite>
[[ACCNAME-1.2]].
</li>
<li>
contents: name comes from the text value of the <a>element</a> node. Although this might be allowed in addition to "namefrom: author" or "namefrom:heading" in some <a>roles</a>, this
is used in content only if higher priority "namefrom: author" or "namefrom: heading" features are not provided. Priority is defined by the <cite><a href="" class="accname">Accessible
Name and Description Computation</a></cite> [[ACCNAME-1.2]].
</li>
<li>Priority is defined by the <cite><a href="" class="accname">Accessible Name and Description Computation</a></cite> [[ACCNAME-1.2]].</li>
<li>prohibited: the element does not support name from author. Authors MUST NOT use the <pref>aria-label</pref> or <pref>aria-labelledby</pref> attributes to name the element.</li>
</ol>
<section id="namefromauthor">
<h4>Roles Supporting Name from Author</h4>
<div id="index_fromauthor"></div>
</section>
<section id="namefromheading">
<h4>Roles Supporting Name from Heading</h4>
<div id="index_fromheading"></div>
</section>
<section id="namefromcontent">
<h4>Roles Supporting Name from Content</h4>
<div id="index_fromcontent"></div>
Expand Down Expand Up @@ -1670,7 +1682,12 @@ <h2>Definition of Roles</h2>
</tr>
<tr>
<th class="role-namefrom-head" scope="row">Name From:</th>
<td class="role-namefrom">author</td>
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@cookiecrook cookiecrook Oct 13, 2025

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Reviewer context: this is on the alertdialog role

<td class="role-namefrom">
<ul>
<li>author</li>
<li>heading</li>
</ul>
</td>
</tr>
<tr>
<th class="role-namerequired-head" scope="row">Accessible Name Required:</th>
Expand Down Expand Up @@ -1886,7 +1903,12 @@ <h2>Definition of Roles</h2>
</tr>
<tr>
<th class="role-namefrom-head" scope="row">Name From:</th>
<td class="role-namefrom">author</td>
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@cookiecrook cookiecrook Oct 13, 2025

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Reviewer context: this is on the article role

<td class="role-namefrom">
<ul>
<li>author</li>
<li>heading</li>
</ul>
</td>
</tr>
<tr>
<th class="role-namerequired-head" scope="row">Accessible Name Required:</th>
Expand Down Expand Up @@ -3631,7 +3653,7 @@ <h2>Definition of Roles</h2>
focus to dialogs. See the <a href="https://www.w3.org/WAI/ARIA/apg/patterns/dialog-modal/">WAI-ARIA Authoring Practices: Dialog (modal) pattern</a> for additional details on implementing
modal dialog design patterns.
</p>
<p>Authors SHOULD provide an accessible name for a dialog, which can be done with the <pref>aria-label</pref> or <pref>aria-labelledby</pref> attribute.</p>
<p>Authors SHOULD provide an accessible name for a dialog, using either <a href="#namecalculation">namefrom</a>: author or <a href="#namecalculation">namefrom</a>: heading.</p>
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@rahimabdi rahimabdi Oct 15, 2025

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Given a dialog that contains an <h2> for example, would it be preferable for authors to use aria-labelledby or rely on nameFrom: heading? Should nameFrom: author be preferred over nameFrom: heading?

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@cookiecrook cookiecrook Oct 20, 2025

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Yes, the AccName computation prioritizes namefrom:author first... namefrom:heading is only used as a fallback.

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@cookiecrook cookiecrook Oct 20, 2025

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The direct author reference is probably slightly more performant, but I don't think a change is needed here unless you have one to suggest.

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@rahimabdi rahimabdi Oct 21, 2025

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Just a personal clarification to make sure I'm using this new nameFrom technique properly 😄

<p>
Authors SHOULD ensure that all dialogs (both modal and non-modal) have at least one <a>focusable</a> descendant element. Authors SHOULD focus an element in the modal dialog when it is
displayed, and authors SHOULD constrain keyboard focus to focusable elements within a modal dialog, until dismissed.
Expand Down Expand Up @@ -3721,7 +3743,12 @@ <h2>Definition of Roles</h2>
</tr>
<tr>
<th class="role-namefrom-head" scope="row">Name From:</th>
<td class="role-namefrom">author</td>
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@cookiecrook cookiecrook Oct 13, 2025

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Reviewer context: this is on the dialog role

<td class="role-namefrom">
<ul>
<li>author</li>
<li>heading</li>
</ul>
</td>
</tr>
<tr>
<th class="role-namerequired-head" scope="row">Accessible Name Required:</th>
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