mirror of
https://github.com/jquery/jquery-ui.git
synced 2024-11-21 11:04:24 +00:00
78 lines
2.0 KiB
JavaScript
78 lines
2.0 KiB
JavaScript
/*!
|
|
* jQuery UI Focusable @VERSION
|
|
* https://jqueryui.com
|
|
*
|
|
* Copyright OpenJS Foundation and other contributors
|
|
* Released under the MIT license.
|
|
* https://jquery.org/license
|
|
*/
|
|
|
|
//>>label: :focusable Selector
|
|
//>>group: Core
|
|
//>>description: Selects elements which can be focused.
|
|
//>>docs: https://api.jqueryui.com/focusable-selector/
|
|
|
|
( function( factory ) {
|
|
"use strict";
|
|
|
|
if ( typeof define === "function" && define.amd ) {
|
|
|
|
// AMD. Register as an anonymous module.
|
|
define( [ "jquery", "./version" ], factory );
|
|
} else {
|
|
|
|
// Browser globals
|
|
factory( jQuery );
|
|
}
|
|
} )( function( $ ) {
|
|
"use strict";
|
|
|
|
// Selectors
|
|
$.ui.focusable = function( element, hasTabindex ) {
|
|
var map, mapName, img, focusableIfVisible, fieldset,
|
|
nodeName = element.nodeName.toLowerCase();
|
|
|
|
if ( "area" === nodeName ) {
|
|
map = element.parentNode;
|
|
mapName = map.name;
|
|
if ( !element.href || !mapName || map.nodeName.toLowerCase() !== "map" ) {
|
|
return false;
|
|
}
|
|
img = $( "img[usemap='#" + mapName + "']" );
|
|
return img.length > 0 && img.is( ":visible" );
|
|
}
|
|
|
|
if ( /^(input|select|textarea|button|object)$/.test( nodeName ) ) {
|
|
focusableIfVisible = !element.disabled;
|
|
|
|
if ( focusableIfVisible ) {
|
|
|
|
// Form controls within a disabled fieldset are disabled.
|
|
// However, controls within the fieldset's legend do not get disabled.
|
|
// Since controls generally aren't placed inside legends, we skip
|
|
// this portion of the check.
|
|
fieldset = $( element ).closest( "fieldset" )[ 0 ];
|
|
if ( fieldset ) {
|
|
focusableIfVisible = !fieldset.disabled;
|
|
}
|
|
}
|
|
} else if ( "a" === nodeName ) {
|
|
focusableIfVisible = element.href || hasTabindex;
|
|
} else {
|
|
focusableIfVisible = hasTabindex;
|
|
}
|
|
|
|
return focusableIfVisible && $( element ).is( ":visible" ) &&
|
|
$( element ).css( "visibility" ) === "visible";
|
|
};
|
|
|
|
$.extend( $.expr.pseudos, {
|
|
focusable: function( element ) {
|
|
return $.ui.focusable( element, $.attr( element, "tabindex" ) != null );
|
|
}
|
|
} );
|
|
|
|
return $.ui.focusable;
|
|
|
|
} );
|