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Stricter language for authors using aria-owns #1351

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Dec 9, 2020
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Stricter language for authors using aria-owns #1351

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Stricter language for authors using aria-owns
carmacleod Nov 3, 2020
0ee17a0
remove unnecessary "if necessary"
carmacleod Nov 4, 2020
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3 changes: 2 additions & 1 deletion index.html
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Expand Up @@ -12270,7 +12270,8 @@ <h2>Definitions of States and Properties (all aria-* attributes)</h2>
<div class="property-description">
<p>Identifies an <a>element</a> (or elements) in order to define a visual, functional, or contextual parent/child <a>relationship</a> between <abbr title="Document Object Model">DOM</abbr> elements where the DOM hierarchy cannot be used to represent the relationship. See related <pref>aria-controls</pref>.</p>
<p>The value of the <pref>aria-owns</pref> <a>attribute</a> is a space-separated ID reference list that references one or more elements in the document by ID. The reason for adding <pref>aria-owns</pref> is to expose a parent/child contextual relationship to <a>assistive technologies</a> that is otherwise impossible to infer from the <abbr title="Document Object Model">DOM</abbr>.</p>
<p>If an element has both <pref>aria-owns</pref> and <abbr title="Document Object Model">DOM</abbr> children then the order of the child elements with respect to the parent/child relationship is the <abbr title="Document Object Model">DOM</abbr> children first, then the elements referenced in <pref>aria-owns</pref>. If the author intends that the <abbr title="Document Object Model">DOM</abbr> children are not first, then list the DOM children in <pref>aria-owns</pref> in the desired order. Authors SHOULD NOT use <pref>aria-owns</pref> as a replacement for the <abbr title="Document Object Model">DOM</abbr> hierarchy. If the relationship is represented in the DOM, do not use <pref>aria-owns</pref>. Authors MUST ensure that an element's ID is not specified in more than one other element's <pref>aria-owns</pref> attribute at any time. In other words, an element can have only one explicit owner.</p>
<p>If an element has both <pref>aria-owns</pref> and <abbr title="Document Object Model">DOM</abbr> children then the order of the child elements with respect to the parent/child relationship is the <abbr title="Document Object Model">DOM</abbr> children first, then the elements referenced in <pref>aria-owns</pref>. If the author intends that the <abbr title="Document Object Model">DOM</abbr> children are not first, then list the DOM children in <pref>aria-owns</pref> in the desired order. Authors SHOULD NOT use <pref>aria-owns</pref> as a replacement for the <abbr title="Document Object Model">DOM</abbr> hierarchy. If the relationship is represented in the DOM, do not use <pref>aria-owns</pref>.</p>
<p>Authors MUST ensure that an element's ID is not specified in more than one other element's <pref>aria-owns</pref> attribute at any time. In other words, an element can have only one explicit owner. Authors MUST NOT create circular references with <pref>aria-owns</pref>. In the case of authoring error with <pref>aria-owns</pref>, the user agent MAY ignore some <pref>aria-owns</pref> element references in order to build a consistent model of the content.</p>
</div>
<table class="property-features">
<caption>Characteristics:</caption>
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