add arianotify draft

index.html

@@ -13538,8 +13538,8 @@ <h3>Presentational Roles Conflict Resolution</h3>
 	</section>
 </section>
 <section id="idl-interface" class="normative">
-	<h2>IDL Interface</h2>
-	<p>Conforming user agents MUST implement the following IDL interface.</p>
+	<h2>IDL Interfaces</h2>
+	<p>Conforming user agents MUST implement the following IDL interfaces.</p>
 	<section id="ARIAMixin" class="normative" data-dfn-for="ARIAMixin" data-link-for="ARIAMixin">
 		<h2>Interface Mixin <dfn>ARIAMixin</dfn></h2>
 		<pre class="idl" data-cite="webidl">
@@ -13610,7 +13610,33 @@ <h2>Interface Mixin <dfn>ARIAMixin</dfn></h2>
 
 		<p class="note">In practice, this means that, e.g., the <code>role</code> IDL attribute on <code>Element</code> reflects the <code>role</code> content attribute; the <code>ariaValueMin</code> IDL attribute reflects the <pref>aria-valuemin</pref> content attribute; etc. Ambiguity clarifications (such as <code>ariaPosInSet</code>) are listed in <a href="#idl_attr_exceptions">IDL Attribute Name Notes or Exceptions</a>.</p>
 	</section>
+	<section id="ARIANotifyMixin" class="normative" data-dfn-for="ARIANotifyMixin" data-link-for="ARIANotifyMixin">
+		<h2>Interface Mixin <dfn>ARIANotifyMixin</dfn></h2>
+		<pre class="idl" data-cite="webidl">
+      enum AriaNotifyInterrupt { "none", "all", "pending" };
+      enum AriaNotifyPriority { "none", "important" };
+
+      dictionary AriaNotificationOptions {
+        AriaNotifyInterrupt interrupt = "none";
+        AriaNotifyPriority priority = "none";
+        DOMString notificationId = "";
+      };
+			interface mixin ARIANotifyMixin {
+        void ariaNotify(DOMString announcement, optional AriaNotificationOptions options = {});
+      };
+			Element includes ARIANotifyMixin;
+			Document includes ARIANotifyMixin;
+    </pre>
 
+    <p>User Agent processing for the <dfn method for=ARIANotifyMixin><code>ariaNotify(<var>announcement</var>, <var>options</var>)</code></dfn> method steps are:</p>
+    <ol>
+      <li><p>Let <var>priority</var> be <var>options</var>["<code>priority</code>"].</p></li>
+      <li><p>Let <var>interrupt</var> be <var>options</var>["<code>interrupt</code>"].</p></li>
+      <li><p>Let <var>id</var> be <var>options</var>["<code>notifyId</code>"].</p></li>
+      <li><p>Run the aria notify steps given <var>node</var>, <var>announcement</var>, <var>priority</var>, <var>interrupt</var>, and <var>id</var>.</p></li>
+    </ol>
+
+  </section>
 	<section id="accessibilityroleandproperties-correspondence" class="normative" data-dfn-for="ARIAMixin" data-link-for="ARIAMixin">
 		<h2>ARIA Attribute Correspondence</h2>
 		<p>The following table provides a correspondence between IDL attribute names and content attribute names, for use by <code>ARIAMixin</code>.</p>
@@ -13729,6 +13755,7 @@ <h2>Example IDL Attribute Usage</h2>
 	</section>
 
 </section>
+
 <section class="informative">
 	<h2>Security Considerations</h2>
 	<p>This specification introduces no new security considerations.</p>