106 lines
2.3 KiB
JavaScript
106 lines
2.3 KiB
JavaScript
define( [
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"../core",
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"../data/var/dataPriv",
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"../css/var/isHiddenWithinTree"
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], function( jQuery, dataPriv, isHiddenWithinTree ) {
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"use strict";
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var defaultDisplayMap = {};
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function getDefaultDisplay( elem ) {
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var temp,
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doc = elem.ownerDocument,
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nodeName = elem.nodeName,
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display = defaultDisplayMap[ nodeName ];
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if ( display ) {
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return display;
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}
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temp = doc.body.appendChild( doc.createElement( nodeName ) );
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display = jQuery.css( temp, "display" );
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temp.parentNode.removeChild( temp );
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if ( display === "none" ) {
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display = "block";
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}
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defaultDisplayMap[ nodeName ] = display;
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return display;
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}
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function showHide( elements, show ) {
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var display, elem,
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values = [],
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index = 0,
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length = elements.length;
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// Determine new display value for elements that need to change
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for ( ; index < length; index++ ) {
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elem = elements[ index ];
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if ( !elem.style ) {
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continue;
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}
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display = elem.style.display;
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if ( show ) {
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// Since we force visibility upon cascade-hidden elements, an immediate (and slow)
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// check is required in this first loop unless we have a nonempty display value (either
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// inline or about-to-be-restored)
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if ( display === "none" ) {
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values[ index ] = dataPriv.get( elem, "display" ) || null;
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if ( !values[ index ] ) {
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elem.style.display = "";
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}
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}
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if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) {
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values[ index ] = getDefaultDisplay( elem );
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}
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} else {
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if ( display !== "none" ) {
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values[ index ] = "none";
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// Remember what we're overwriting
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dataPriv.set( elem, "display", display );
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}
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}
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}
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// Set the display of the elements in a second loop to avoid constant reflow
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for ( index = 0; index < length; index++ ) {
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if ( values[ index ] != null ) {
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elements[ index ].style.display = values[ index ];
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}
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}
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return elements;
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}
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jQuery.fn.extend( {
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show: function() {
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return showHide( this, true );
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},
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hide: function() {
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return showHide( this );
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},
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toggle: function( state ) {
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if ( typeof state === "boolean" ) {
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return state ? this.show() : this.hide();
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}
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return this.each( function() {
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if ( isHiddenWithinTree( this ) ) {
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jQuery( this ).show();
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} else {
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jQuery( this ).hide();
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}
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} );
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}
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} );
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return showHide;
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} );
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