MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / resources / src / jquery / jquery.footHovzer.js

diff --git a/resources/src/jquery/jquery.footHovzer.js b/resources/src/jquery/jquery.footHovzer.js
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+++ b/resources/src/jquery/jquery.footHovzer.js
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+/**
+ * @class jQuery.plugin.footHovzer
+ */
+( function ( $ ) {
+       var $hovzer, footHovzer, $spacer;
+
+       function getHovzer() {
+               if ( $hovzer === undefined ) {
+                       $hovzer = $( '<div id="jquery-foot-hovzer"></div>' ).appendTo( 'body' );
+               }
+               return $hovzer;
+       }
+
+       /**
+        * Utility to stack stuff in an overlay fixed on the bottom of the page.
+        *
+        * Usage:
+        *
+        *     var hovzer = $.getFootHovzer();
+        *     hovzer.$.append( $myCollection );
+        *     hovzer.update();
+        *
+        * @static
+        * @inheritable
+        * @return {jQuery.footHovzer}
+        */
+       $.getFootHovzer = function () {
+               footHovzer.$ = getHovzer();
+               return footHovzer;
+       };
+
+       /**
+        * @private
+        * @class jQuery.footHovzer
+        */
+       footHovzer = {
+
+               /**
+                * @property {jQuery} $ The stack container
+                */
+
+               /**
+                * Update dimensions of stack to account for changes in the subtree.
+                */
+               update: function () {
+                       var $body;
+
+                       $body = $( 'body' );
+
+                       if ( $spacer === undefined ) {
+                               $spacer = $( '<div>' ).attr( 'id', 'jquery-foot-hovzer-spacer' );
+                               $spacer.appendTo( $body );
+                       }
+                       // Ensure CSS is applied by browser before using .outerHeight()
+                       setTimeout( function () {
+                               $spacer.css( 'height', getHovzer().outerHeight( /* includeMargin = */ true ) );
+                       }, 0 );
+               }
+       };
+
+       /**
+        * @class jQuery
+        * @mixins jQuery.plugin.footHovzer
+        */
+
+}( jQuery ) );