Add TouchEvent's retargeting steps

index.html

@@ -863,6 +863,43 @@ <h3 id="event-touchcancel">The <dfn class="event"><code>touchcancel</code></dfn>
  </section>
  </section>
 
+ <section>
+ <h2>Retargeting</h2>
+ <p>
+ The following section describes <a href="https://dom.spec.whatwg.org/#event-retargeting-steps">retargeting steps</a>,
+ defined in [[!WHATWG-DOM]].
+ </p>
+
+ <p>
+ <code>Touch</code> object has an associated <dfn>unadjustedTarget</dfn> (null or <code>EventTarget</code>).
+ Unless stated otherwise it is null.
+ </p>
+
+ <p>
+ <code>TouchEvent</code>'s <a href="https://dom.spec.whatwg.org/#event-retargeting-steps">retargeting steps</a>,
+ given a <var>touchEvent</var>, must run these steps:
+ </p>
+ <ol>
+ <li>
+ <p>
+ For each <a><code>Touch</code></a> <var>touch</var> in <var>touchEvent</var>'s <code>touches</code>,
+ <code>targetTouches</code>, and <code>changedTouches</code> members:
+ </p>
+ <ol>
+ <li>
+ Set <van>touch</var>'s <code>unadjustedTarget</code> to <var>touch</var>'s <code>target</code>
+ if <var>touch</var>'s <code>unadjustedTarget</code> is null.
+ </li>
+ <li>
+ Set <var>touch</var>'s <code>target</code> to the result of invoking
+ <a href="https://dom.spec.whatwg.org/#retarget">retargeting</a> <var>touch</var>'s <var>unadjustedTarget</var>
+ againt <var>touchEvent</var>'s <code>target</code>.
+ </li>
+ </ol>
+ </li>
+ </ol>
+ </section>
+
  <section>
  <h2>Extensions to the <code>GlobalEventHandlers</code> interface</h2>
  <p>The following section describes extensions to the existing <code>GlobalEventHandlers</code> interface, defined in [[!HTML5]], to facilitate the event handler registration.</p>
@@ -1153,6 +1190,9 @@ <h2>Changes Since Last Publication</h2>
  <li>
  <a href="https://github.com/w3c/touch-events/pull/72">Note about avoiding conditional "touch OR mouse/keyboard" event handling</a>
  </li>
+ <li>
+ <a href="https://github.com/w3c/touch-events/pull/73">Added TouchEvent's retargeting steps</a>
+ </li>
  </ul>
  </section>