corrade-nucleus-nucleons – Rev 20

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define( [
        "../core",
        "../data/var/dataPriv",
        "../css/var/isHiddenWithinTree"
], function( jQuery, dataPriv, isHiddenWithinTree ) {

"use strict";

var defaultDisplayMap = {};

function getDefaultDisplay( elem ) {
        var temp,
                doc = elem.ownerDocument,
                nodeName = elem.nodeName,
                display = defaultDisplayMap[ nodeName ];

        if ( display ) {
                return display;
        }

        temp = doc.body.appendChild( doc.createElement( nodeName ) );
        display = jQuery.css( temp, "display" );

        temp.parentNode.removeChild( temp );

        if ( display === "none" ) {
                display = "block";
        }
        defaultDisplayMap[ nodeName ] = display;

        return display;
}

function showHide( elements, show ) {
        var display, elem,
                values = [],
                index = 0,
                length = elements.length;

        // Determine new display value for elements that need to change
        for ( ; index < length; index++ ) {
                elem = elements[ index ];
                if ( !elem.style ) {
                        continue;
                }

                display = elem.style.display;
                if ( show ) {

                        // Since we force visibility upon cascade-hidden elements, an immediate (and slow)
                        // check is required in this first loop unless we have a nonempty display value (either
                        // inline or about-to-be-restored)
                        if ( display === "none" ) {
                                values[ index ] = dataPriv.get( elem, "display" ) || null;
                                if ( !values[ index ] ) {
                                        elem.style.display = "";
                                }
                        }
                        if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) {
                                values[ index ] = getDefaultDisplay( elem );
                        }
                } else {
                        if ( display !== "none" ) {
                                values[ index ] = "none";

                                // Remember what we're overwriting
                                dataPriv.set( elem, "display", display );
                        }
                }
        }

        // Set the display of the elements in a second loop to avoid constant reflow
        for ( index = 0; index < length; index++ ) {
                if ( values[ index ] != null ) {
                        elements[ index ].style.display = values[ index ];
                }
        }

        return elements;
}

jQuery.fn.extend( {
        show: function() {
                return showHide( this, true );
        },
        hide: function() {
                return showHide( this );
        },
        toggle: function( state ) {
                if ( typeof state === "boolean" ) {
                        return state ? this.show() : this.hide();
                }

                return this.each( function() {
                        if ( isHiddenWithinTree( this ) ) {
                                jQuery( this ).show();
                        } else {
                                jQuery( this ).hide();
                        }
                } );
        }
} );

return showHide;
} );