corrade-nucleus-nucleons – Rev 20

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define( [
        "../../core",
        "../../selector"

        // css is assumed
], function( jQuery ) {
        "use strict";

        // isHiddenWithinTree reports if an element has a non-"none" display style (inline and/or
        // through the CSS cascade), which is useful in deciding whether or not to make it visible.
        // It differs from the :hidden selector (jQuery.expr.pseudos.hidden) in two important ways:
        // * A hidden ancestor does not force an element to be classified as hidden.
        // * Being disconnected from the document does not force an element to be classified as hidden.
        // These differences improve the behavior of .toggle() et al. when applied to elements that are
        // detached or contained within hidden ancestors (gh-2404, gh-2863).
        return function( elem, el ) {

                // isHiddenWithinTree might be called from jQuery#filter function;
                // in that case, element will be second argument
                elem = el || elem;

                // Inline style trumps all
                return elem.style.display === "none" ||
                        elem.style.display === "" &&

                        // Otherwise, check computed style
                        // Support: Firefox <=43 - 45
                        // Disconnected elements can have computed display: none, so first confirm that elem is
                        // in the document.
                        jQuery.contains( elem.ownerDocument, elem ) &&

                        jQuery.css( elem, "display" ) === "none";
        };
} );