2 * hoverIntent is similar to jQuery's built-in "hover" function except that |
2 * hoverIntent is similar to jQuery's built-in "hover" function except that |
3 * instead of firing the onMouseOver event immediately, hoverIntent checks |
3 * instead of firing the onMouseOver event immediately, hoverIntent checks |
4 * to see if the user's mouse has slowed down (beneath the sensitivity |
4 * to see if the user's mouse has slowed down (beneath the sensitivity |
5 * threshold) before firing the onMouseOver event. |
5 * threshold) before firing the onMouseOver event. |
6 * |
6 * |
7 * hoverIntent r5 // 2007.03.27 // jQuery 1.1.2+ |
7 * hoverIntent r6 // 2011.02.26 // jQuery 1.5.1+ |
8 * <http://cherne.net/brian/resources/jquery.hoverIntent.html> |
8 * <http://cherne.net/brian/resources/jquery.hoverIntent.html> |
9 * |
9 * |
10 * hoverIntent is currently available for use in all personal or commercial |
10 * hoverIntent is currently available for use in all personal or commercial |
11 * projects under both MIT and GPL licenses. This means that you can choose |
11 * projects under both MIT and GPL licenses. This means that you can choose |
12 * the license that best suits your project, and use it accordingly. |
12 * the license that best suits your project, and use it accordingly. |
70 var delay = function(ev,ob) { |
70 var delay = function(ev,ob) { |
71 ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); |
71 ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); |
72 ob.hoverIntent_s = 0; |
72 ob.hoverIntent_s = 0; |
73 return cfg.out.apply(ob,[ev]); |
73 return cfg.out.apply(ob,[ev]); |
74 }; |
74 }; |
75 |
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76 // workaround for Mozilla bug: not firing mouseout/mouseleave on absolute positioned elements over textareas and input type="text" |
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77 var handleHover = function(e) { |
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78 var t = this; |
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79 |
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80 // next two lines copied from jQuery.hover, ignore children onMouseOver/onMouseOut |
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81 var p = (e.type == "mouseover" ? e.fromElement : e.toElement) || e.relatedTarget; |
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82 while ( p && p != this ) { try { p = p.parentNode; } catch(e) { p = this; } } |
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83 if ( p == this ) { |
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84 if ( $.browser.mozilla ) { |
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85 if ( e.type == "mouseout" ) { |
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86 t.mtout = setTimeout( function(){doHover(e,t);}, 30 ); |
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87 } else { |
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88 if (t.mtout) { t.mtout = clearTimeout(t.mtout); } |
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89 } |
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90 } |
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91 return; |
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92 } else { |
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93 if (t.mtout) { t.mtout = clearTimeout(t.mtout); } |
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94 doHover(e,t); |
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95 } |
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96 }; |
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97 |
75 |
98 // A private function for handling mouse 'hovering' |
76 // A private function for handling mouse 'hovering' |
99 var doHover = function(e,ob) { |
77 var handleHover = function(e) { |
100 |
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101 // copy objects to be passed into t (required for event object to be passed in IE) |
78 // copy objects to be passed into t (required for event object to be passed in IE) |
102 var ev = jQuery.extend({},e); |
79 var ev = jQuery.extend({},e); |
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80 var ob = this; |
103 |
81 |
104 // cancel hoverIntent timer if it exists |
82 // cancel hoverIntent timer if it exists |
105 if (ob.hoverIntent_t) { ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); } |
83 if (ob.hoverIntent_t) { ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); } |
106 |
84 |
107 // else e.type == "onmouseover" |
85 // if e.type == "mouseenter" |
108 if (e.type == "mouseover") { |
86 if (e.type == "mouseenter") { |
109 // set "previous" X and Y position based on initial entry point |
87 // set "previous" X and Y position based on initial entry point |
110 pX = ev.pageX; pY = ev.pageY; |
88 pX = ev.pageX; pY = ev.pageY; |
111 // update "current" X and Y position based on mousemove |
89 // update "current" X and Y position based on mousemove |
112 $(ob).bind("mousemove",track); |
90 $(ob).bind("mousemove",track); |
113 // start polling interval (self-calling timeout) to compare mouse coordinates over time |
91 // start polling interval (self-calling timeout) to compare mouse coordinates over time |
114 if (ob.hoverIntent_s != 1) { ob.hoverIntent_t = setTimeout( function(){compare(ev,ob);} , cfg.interval );} |
92 if (ob.hoverIntent_s != 1) { ob.hoverIntent_t = setTimeout( function(){compare(ev,ob);} , cfg.interval );} |
115 |
93 |
116 // else e.type == "onmouseout" |
94 // else e.type == "mouseleave" |
117 } else { |
95 } else { |
118 // unbind expensive mousemove event |
96 // unbind expensive mousemove event |
119 $(ob).unbind("mousemove",track); |
97 $(ob).unbind("mousemove",track); |
120 // if hoverIntent state is true, then call the mouseOut function after the specified delay |
98 // if hoverIntent state is true, then call the mouseOut function after the specified delay |
121 if (ob.hoverIntent_s == 1) { ob.hoverIntent_t = setTimeout( function(){delay(ev,ob);} , cfg.timeout );} |
99 if (ob.hoverIntent_s == 1) { ob.hoverIntent_t = setTimeout( function(){delay(ev,ob);} , cfg.timeout );} |
122 } |
100 } |
123 }; |
101 }; |
124 |
102 |
125 // bind the function to the two event listeners |
103 // bind the function to the two event listeners |
126 return this.mouseover(handleHover).mouseout(handleHover); |
104 return this.bind('mouseenter',handleHover).bind('mouseleave',handleHover); |
127 }; |
105 }; |
128 })(jQuery); |
106 })(jQuery); |