define( [
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"../../core",
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"../../selector"
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// css is assumed
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], function( jQuery ) {
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"use strict";
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// isHiddenWithinTree reports if an element has a non-"none" display style (inline and/or
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// through the CSS cascade), which is useful in deciding whether or not to make it visible.
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// It differs from the :hidden selector (jQuery.expr.pseudos.hidden) in two important ways:
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// * A hidden ancestor does not force an element to be classified as hidden.
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// * Being disconnected from the document does not force an element to be classified as hidden.
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// These differences improve the behavior of .toggle() et al. when applied to elements that are
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// detached or contained within hidden ancestors (gh-2404, gh-2863).
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return function( elem, el ) {
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// isHiddenWithinTree might be called from jQuery#filter function;
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// in that case, element will be second argument
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elem = el || elem;
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// Inline style trumps all
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return elem.style.display === "none" ||
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elem.style.display === "" &&
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// Otherwise, check computed style
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// Support: Firefox <=43 - 45
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// Disconnected elements can have computed display: none, so first confirm that elem is
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// in the document.
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jQuery.contains( elem.ownerDocument, elem ) &&
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jQuery.css( elem, "display" ) === "none";
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};
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} );
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