share/html/NoAuth/js/jquery.supposition.js

   1 /* This file was modified to look for superfish in $.fn.superfish instead of $.superfish */
   2
   3 /*
   4  * Supposition v0.2 - an optional enhancer for Superfish jQuery menu widget
   5  *
   6  * Copyright (c) 2008 Joel Birch - based mostly on work by Jesse Klaasse and credit goes largely to him.
   7  * Special thanks to Karl Swedberg for valuable input.
   8  *
   9  * Dual licensed under the MIT and GPL licenses:
  10  *      http://www.opensource.org/licenses/mit-license.php
  11  *      http://www.gnu.org/licenses/gpl.html
  12  */
  13
  14 (function($){
  15
  16         $.fn.supposition = function(){
  17                 var $w = $(window), /*do this once instead of every onBeforeShow call*/
  18                         _offset = function(dir) {
  19                                 return window[dir == 'y' ? 'pageYOffset' : 'pageXOffset']
  20                                 || document.documentElement && document.documentElement[dir=='y' ? 'scrollTop' : 'scrollLeft']
  21                             || document.body[dir=='y' ? 'scrollTop' : 'scrollLeft'];
  22                         },
  23                         onInit = function(){
  24                                 /* I haven't touched this bit - needs work as there are still z-index issues */
  25                                 $topNav = $('li',this);
  26                                 var cZ=parseInt($topNav.css('z-index')) + $topNav.length;
  27                                 $topNav.each(function() {
  28                                         $(this).css({zIndex:--cZ});
  29                                 });
  30                         },
  31                         onHide = function(){
  32                                 this.css({marginTop:'',marginLeft:''});
  33                         },
  34                         onBeforeShow = function(){
  35                                 this.each(function(){
  36                                         var $u = $(this);
  37                                         $u.css('display','block');
  38                                         var menuWidth = $u.width(),
  39                                                 parentWidth = $u.parents('ul').width(),
  40                                                 totalRight = $w.width() + _offset('x'),
  41                                                 menuRight = $u.offset().left + menuWidth;
  42                                         if (menuRight > totalRight) {
  43                                                 $u.css('margin-left', ($u.parents('ul').length == 1 ? totalRight - menuRight : -(menuWidth + parentWidth)) + 'px');
  44                                         }
  45
  46                                         var windowHeight = $w.height(),
  47                                                 offsetTop = $u.offset().top,
  48                                                 menuHeight = $u.height(),
  49                                                 baseline = windowHeight + _offset('y');
  50                                         var expandUp = (offsetTop + menuHeight > baseline);
  51                                         if (expandUp) {
  52                                                 $u.css('margin-top',baseline - (menuHeight + offsetTop));
  53                                         }
  54                                         $u.css('display','none');
  55                                 });
  56                         };
  57
  58                 return this.each(function() {
  59                         var o = $.fn.superfish.o[this.serial]; /* get this menu's options */
  60
  61                         /* if callbacks already set, store them */
  62                         var _onInit = o.onInit,
  63                                 _onBeforeShow = o.onBeforeShow,
  64                                 _onHide = o.onHide;
  65
  66                         $.extend($.fn.superfish.o[this.serial],{
  67                                 onInit          : function() {
  68                                         onInit.call(this); /* fire our Supposition callback */
  69                                         _onInit.call(this); /* fire stored callbacks */
  70                                 },
  71                                 onBeforeShow: function() {
  72                                         onBeforeShow.call(this); /* fire our Supposition callback */
  73                                         _onBeforeShow.call(this); /* fire stored callbacks */
  74                                 },
  75                                 onHide          : function() {
  76                                         onHide.call(this); /* fire our Supposition callback */
  77                                         _onHide.call(this); /* fire stored callbacks */
  78                                 }
  79                         });
  80                 });
  81         };
  82
  83 })(jQuery);