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Software License Agreement (BSD License)
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All rights reserved.
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following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Sources of Intellectual Property Included in the YUI Library
YUI is issued by Yahoo! under the BSD license above. Below is a list of certain publicly available software that is the source of intellectual property in YUI, along with the licensing terms that pertain to thosesources of IP. This list is for informational purposes only and is not intended to represent an exhaustive list of third party contributions to the YUI.
* Douglas Crockford's JSON parsing and stringifying methods: In the JSON Utility, Douglas Crockford's JSON parsing and stringifying methods are adapted from work published at JSON.org. The adapted work is in the public domain.
* Robert Penner's animation-easing algorithms: In the Animation Utility, YUI makes use of Robert Penner's algorithms for easing.
* Geoff Stearns's SWFObject: In the Charts Control and the Uploader versions through 2.7.0, YUI makes use of Geoff Stearns's SWFObject v1.5 for Flash Player detection and embedding. More information on SWFObject can be found here (http://blog.deconcept.com/swfobject/). SWFObject is (c) 2007 Geoff Stearns and is released under the MIT License (http://www.opensource.org/licenses/mit-license.php).
* Diego Perini's IEContentLoaded technique: The Event Utility employs a technique developed by Diego Perini and licensed under GPL. YUI's use of this technique is included under our BSD license with the author's permission.
-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Using the TabView ARIA Plugin</title>
<style type="text/css">
/*margin and padding on body element
can introduce errors in determining
element position and are not recommended;
we turn them off as a foundation for YUI
CSS treatments. */
body {
margin:0;
padding:0;
}
</style>
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/fonts/fonts-min.css" />
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/tabview/assets/skins/sam/tabview.css" />
<script type="text/javascript" src="yui_2.7.0b-lib/yahoo-dom-event/yahoo-dom-event.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/connection/connection-min.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/element/element-min.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/tabview/tabview-min.js"></script>
<!--begin custom header content for this example-->
<style type="text/css">
/*
The TabView ARIA Plugin removes the "href" attribute from the <A> element of each
Tab, resulting in the focus outline no longer be rendered in Gecko-based browsers when the
<A> element is focused. For this reason, it is necessary to restore the focus outline
for the <A>.
*/
.yui-skin-sam .yui-navset .yui-nav a[role=tab]:focus {
outline: dotted 1px #000;
}
/*
Hide the instructional text in the H1 and the content of the LiveRegion outside the
viewport boundaries so it is only readable by users of screen readers.
*/
#tabview-title em,
.yui-navset div[role=log] {
position: absolute;
left: -999em;
}
</style>
<script type="text/javascript" src="yui_2.7.0b-assets/tabview-assets/tabviewariaplugin.js"></script>
<!--end custom header content for this example-->
</head>
<body class=" yui-skin-sam">
<h1>Using the TabView ARIA Plugin</h1>
<div class="exampleIntro">
<p>
The TabView ARIA Plugin makes it easy to use the
<a href="http://www.w3.org/TR/wai-aria/">WAI-ARIA Roles and States</a> with the TabView control.
Using the ARIA plugin, a TabView is more interoperable with assistive technologies (AT),
such as screen readers, making it more accessible to users with disabilities.
</p>
<p>
<a href="http://video.yahoo.com/watch/3199866/9051193">Watch a screen cast of this example
running in Firefox 3 with the NVDA screen reader</a>, to see immediately the benefits that
ARIA provides, or
<a href="http://www.nvda-project.org/wiki/Snapshots">download the latest development snapshot of
NVDA</a> to test this example for yourself.
</p>
</div>
<!--BEGIN SOURCE CODE FOR EXAMPLE -->
<div id="container">
<h2 class="first" id="tabview-title">Browser News</h2>
</div>
<script type="text/javascript">
(function() {
var Dom = YAHOO.util.Dom,
UA = YAHOO.env.ua,
oTitle,
oTabViewEl,
oLog,
sInstructionalText;
var oTabView = new YAHOO.widget.TabView();
oTabView.addTab( new YAHOO.widget.Tab({
label: 'Opera',
dataSrc: 'yui_2.7.0b-assets/tabview-assets/news.php?query=opera+browser',
cacheData: true,
active: true
}));
oTabView.addTab( new YAHOO.widget.Tab({
label: 'Firefox',
dataSrc: 'yui_2.7.0b-assets/tabview-assets/news.php?query=firefox+browser',
cacheData: true
}));
oTabView.addTab( new YAHOO.widget.Tab({
label: 'Explorer',
dataSrc: 'yui_2.7.0b-assets/tabview-assets/news.php?query=microsoft+explorer+browser',
cacheData: true
}));
oTabView.addTab( new YAHOO.widget.Tab({
label: 'Safari',
dataSrc: 'yui_2.7.0b-assets/tabview-assets/news.php?query=apple+safari+browser',
cacheData: true
}));
oTabView.appendTo('container');
// Make use of some additional ARIA Roles and States to further enhance the TabView if the
// browser supports ARIA.
if ((UA.gecko && UA.gecko >= 1.9) || (UA.ie && UA.ie >= 8)) {
// Use the "labelledby" attribute provided by the ARIA plugin for TabView to label the
// TabView with the <h2>, and append some instructional text to the <H2> that tells users
// of screen readers how to use TabView. This text will be read when the first Tab is
// focused. Since this text is specifically for users of screen readers, it will be
// hidden off screen via CSS.
oTitle = Dom.get("tabview-title");
sInstructionalText = oTitle.innerHTML;
oTitle.innerHTML = (sInstructionalText + "<em>Press the space bar or enter key to load the content of each tab.</em>");
oTabView.set("labelledby", "tabview-title");
// Since the content of each Tab is loaded via XHR, append a Live Region to the TabView's
// root element that will be used to message users about the status of each Tab's content.
oTabViewEl = oTabView.get("element");
oLog = oTabViewEl.ownerDocument.createElement("div");
oLog.setAttribute("role", "log");
oLog.setAttribute("aria-live", "polite");
oTabViewEl.appendChild(oLog);
// "activeTabChange" event handler used to notify the screen reader that
// the content of the Tab is loading by updaing the content of the Live Region.
oTabView.on("activeTabChange", function (event) {
var oTabEl = this.get("activeTab").get("element"),
sTabLabel = oTabEl.textContent || oTabEl.innerText,
oCurrentMessage = Dom.getFirstChild(oLog),
oMessage = oLog.ownerDocument.createElement("p");
oMessage.innerHTML = "Please wait. Content loading for " + sTabLabel + " property page.";
if (oCurrentMessage) {
oLog.replaceChild(oMessage, oCurrentMessage);
}
else {
oLog.appendChild(oMessage);
}
});
// "dataLoadedChange" event handler used to notify the screen reader that
// the content of the Tab has finished loading by updating the content of the Live Region.
var onDataLoadedChange = function (event) {
var oTabEl = this.get("element"),
sTabLabel = oTabEl.textContent || oTabEl.innerText,
oCurrentMessage = Dom.getFirstChild(oLog),
oMessage = oLog.ownerDocument.createElement("p");
oMessage.innerHTML = "Content loaded for " + sTabLabel + " property page.";
if (oCurrentMessage) {
oLog.replaceChild(oMessage, oCurrentMessage);
}
else {
oLog.appendChild(oMessage);
}
};
oTabView.getTab(0).on("dataLoadedChange", onDataLoadedChange);
oTabView.getTab(1).on("dataLoadedChange", onDataLoadedChange);
oTabView.getTab(2).on("dataLoadedChange", onDataLoadedChange);
oTabView.getTab(3).on("dataLoadedChange", onDataLoadedChange);
}
})();
</script>
<!--END SOURCE CODE FOR EXAMPLE -->
</body>
</html>
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yui_2.7.0b.zip( 4,431 k)