jquery/src/css/hiddenVisibleSelectors.js

JavaScript library for DOM operations

define( [
	"../core",
	"./support",
	"../selector",
	"../css"
], function( jQuery, support ) {

function getDisplay( elem ) {
	return elem.style && elem.style.display || jQuery.css( elem, "display" );
}

function filterHidden( elem ) {
	while ( elem && elem.nodeType === 1 ) {
		if ( getDisplay( elem ) === "none" || elem.type === "hidden" ) {
			return true;
		}
		elem = elem.parentNode;
	}
	return false;
}

jQuery.expr.filters.hidden = function( elem ) {

	// Support: Opera <= 12.12
	// Opera reports offsetWidths and offsetHeights less than zero on some elements
	return support.reliableHiddenOffsets() ?
		( elem.offsetWidth <= 0 && elem.offsetHeight <= 0 &&
			!elem.getClientRects().length ) :
			filterHidden( elem );
};

jQuery.expr.filters.visible = function( elem ) {
	return !jQuery.expr.filters.hidden( elem );
};

} );