- From: poot <cvsmail@w3.org>
- Date: Fri, 13 Jan 2012 17:11:31 -0500
- To: public-html-diffs@w3.org
hixie: Tweak hidden='''s definition a bit to be more consistent with likely usage scenarios. (whatwg r6895) http://dev.w3.org/cvsweb/html5/spec/Overview.html?r1=1.5492&r2=1.5493&f=h http://html5.org/tools/web-apps-tracker?from=6894&to=6895 =================================================================== RCS file: /sources/public/html5/spec/Overview.html,v retrieving revision 1.5492 retrieving revision 1.5493 diff -u -d -r1.5492 -r1.5493 --- Overview.html 13 Jan 2012 01:42:16 -0000 1.5492 +++ Overview.html 13 Jan 2012 22:11:16 -0000 1.5493 @@ -54247,9 +54247,11 @@ </ol></div><h2 id="editing"><span class="secno">7 </span><dfn>User interaction</dfn></h2><h3 id="the-hidden-attribute"><span class="secno">7.1 </span>The <dfn title="attr-hidden"><code>hidden</code></dfn> attribute</h3><p>All <a href="#html-elements">HTML elements</a> may have the <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code> content attribute set. The <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code> attribute is a <a href="#boolean-attribute">boolean attribute</a>. When specified on an element, it indicates that - the element is not yet, or is no longer, relevant. <span class="impl">User agents should not render elements that have the - <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code> attribute - specified.</span><div class="example"> + the element is not yet, or is no longer, directly relevant to the + page's current state, or that it is being used to declare content to + be reused by other parts of the page as opposed to being directly + accessed by the user. <span class="impl">User agents should not + render elements that have the <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code> attribute specified.</span><div class="example"> <p>In the following skeletal example, the attribute is used to hide the Web game's main screen until the user logs in:</p> @@ -54281,19 +54283,28 @@ controls in one big page with a scrollbar. It is similarly incorrect to use this attribute to hide content just from one presentation — if something is marked <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code>, it is hidden from all - presentations, including, for instance, screen readers.</p><p>Elements that are not <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code> - should not link to or refer to elements that are <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code>.<div class="example"> + presentations, including, for instance, screen readers.</p><p>Elements that are not themselves <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code> must not <a href="#hyperlink">hyperlink</a> to + elements that are <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code>. The <code title="">for</code> attributes of <code><a href="#the-label-element">label</a></code> and + <code><a href="#the-output-element">output</a></code> elements that are not themselves <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code> must similarly not refer to + elements that are <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code>. In both + cases, such references would cause user confusion.<p>Elements and scripts may, however, refer to elements that are + <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code> in other contexts.<div class="example"> <p>For example, it would be incorrect to use the <code title="attr-hyperlink-href"><a href="#attr-hyperlink-href">href</a></code> attribute to link to a section marked with the <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code> attribute. If the content is not applicable or relevant, then there is no reason to link to it.</p> - <p>It would similarly be incorrect to use the ARIA <code title="attr-aria-describedby">aria-describedby</code> attribute to - refer to descriptions that are themselves <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code>. Hiding a section means that it - is not applicable or relevant to anyone at the current time, so - clearly it cannot be a valid description of content the user can - interact with.</p> + <p>It would be fine, however, to use the ARIA <code title="attr-aria-describedby">aria-describedby</code> attribute to + refer to descriptions that are themselves <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code>. While hiding the descriptions + implies that they are not useful alone, they could be written in + such a way that they are useful in the specific context of being + referenced from the images that they describe.</p> + + <p>Similarly, a <code><a href="#the-canvas-element">canvas</a></code> element with the <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code> attribute could be used by a + scripted graphics engine as an off-screen buffer, and a form + control could refer to a hidden <code><a href="#the-form-element">form</a></code> element using its + <code title="attr-fae-form"><a href="#attr-fae-form">form</a></code> attribute.</p> </div><p>Elements in a section hidden by the <code title="attr-hidden"><a href="#the-hidden-attribute">hidden</a></code> attribute are still active, e.g. scripts and form controls in such sections still execute
Received on Friday, 13 January 2012 22:11:34 UTC