Button ARIA Plugin
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<!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 Button 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/menu/assets/skins/sam/menu.css" />
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/button/assets/skins/sam/button.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/container/container_core-min.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/menu/menu-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/button/button-min.js"></script>
<!--begin custom header content for this example-->
<style type="text/css">
#button-example-form fieldset {
border: 2px groove #ccc;
margin: .5em;
padding: .5em;
}
/*
The Menu ARIA Plugin removes the "href" attribute from the <A> element of each MenuItem
if the value of the "href" is set to "#", 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>.
*/
a[role=menuitem]:focus {
outline: dotted 1px #000;
}
</style>
<script type="text/javascript" src="yui_2.7.0b-assets/container-assets/containerariaplugin.js"></script>
<script type="text/javascript" src="yui_2.7.0b-assets/menu-assets/menuariaplugin.js"></script>
<script type="text/javascript" src="yui_2.7.0b-assets/button-assets/buttonariaplugin.js"></script>
<!--end custom header content for this example-->
</head>
<body class=" yui-skin-sam">
<h1>Using the Button ARIA Plugin</h1>
<div class="exampleIntro">
<p>
The Button 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 Button
and ButtonGroup controls.
Using the ARIA plugin, Buttons are more interoperable with assistive technologies (AT),
such as screen readers, making them more accessible to users with disabilities.
</p>
<p>
<a href="http://video.yahoo.com/watch/3608716/9955201">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 -->
<script type="text/javascript">
(function () {
var Event = YAHOO.util.Event,
Button = YAHOO.widget.Button,
UA = YAHOO.env.ua;
Event.onContentReady("checkboxbutton-example", function () {
var oCheckButton1 = new Button("checkbutton1", { label: "Cheese" });
var oCheckButton2 = new Button("checkbutton2", { label: "Mushrooms" });
var oCheckButton3 = new Button("checkbutton3", { label: "Peperoni" });
var oCheckButton4 = new Button("checkbutton4", { label: "Olives" });
});
Event.onContentReady("radiobutton-example", function () {
// Only apply the WAI-ARIA Roles and States for FF 3 and IE 8 since those
// are the only browsers that currently support ARIA.
if ((UA.gecko && UA.gecko >= 1.9) || (UA.ie && UA.ie >= 8)) {
// Remove the "for" attribute in favor of using the aria-labelledby attribute
YAHOO.util.Dom.get("buttongroup-label").removeAttribute(YAHOO.env.ua.ie ? "htmlFor" : "for");
}
var oButtonGroup = new YAHOO.widget.ButtonGroup("buttongroup", { labelledby: "buttongroup-label" });
});
Event.onContentReady("menubutton-example", function () {
var oMenuButton = new Button("menubutton-1", { type: "menu", menu: "menubutton-1-menu" });
});
Event.onContentReady("splitbutton-example", function () {
var oMenuButton = new Button("splitbutton-1", { type: "split", menu: "splitbutton-1-menu" });
});
}());
</script>
<form id="button-example-form" name="button-example-form" method="post">
<fieldset id="checkboxbutton-example">
<legend>Pizza Toppings</legend>
<input id="checkbutton1" type="checkbox" name="checkboxfield1" value="1" checked>
<input id="checkbutton2" type="checkbox" name="checkboxfield1" value="2">
<input id="checkbutton3" type="checkbox" name="checkboxfield1" value="3">
<input id="checkbutton4" type="checkbox" name="checkboxfield1" value="4">
</fieldset>
<fieldset id="radiobutton-example">
<legend>Radio Buttons</legend>
<div id="buttongroup" class="yui-buttongroup">
<label for="radio1" id="buttongroup-label">Size</label>
<input id="radio1" type="radio" name="radiofield1" value="Small" checked>
<input id="radio2" type="radio" name="radiofield1" value="Medium">
<input id="radio3" type="radio" name="radiofield1" value="Large">
</div>
</fieldset>
<fieldset id="menubutton-example">
<legend>Menu Button</legend>
<input type="button" id="menubutton-1" name="menubutton-1" value="Move To">
<select id="menubutton-1-menu" name="menubutton-1-menu">
<option value="0">Archive</option>
<option value="1">Favorites</option>
<option value="2">Trash</option>
</select>
</fieldset>
<fieldset id="splitbutton-example">
<legend>Split Button</legend>
<input type="button" id="splitbutton-1" name="splitbutton-1" value="Reply">
<select id="splitbutton-1-menu" name="splitbutton-1-menu">
<option value="0">Reply To Sender</option>
<option value="1">Reply To All</option>
</select>
</fieldset>
</form>
<!--END SOURCE CODE FOR EXAMPLE -->
</body>
</html>
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