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1 parent fb57790 commit 93148322346628eeda6c20763c0d64b1885218c7 @justinTNT committed Jun 9, 2012
Showing with 1 addition and 84 deletions.
  1. +1 −84 common/menu/browser/hoverIntent.js
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85 common/menu/browser/hoverIntent.js
@@ -1,84 +1 @@
-(function($){
- /* hoverIntent by Brian Cherne */
- $.fn.hoverIntent = function(f,g) {
- // default configuration options
- var cfg = {
- sensitivity: 7,
- interval: 100,
- timeout: 0
- };
- // override configuration options with user supplied object
- cfg = $.extend(cfg, g ? { over: f, out: g } : f );
-
- // instantiate variables
- // cX, cY = current X and Y position of mouse, updated by mousemove event
- // pX, pY = previous X and Y position of mouse, set by mouseover and polling interval
- var cX, cY, pX, pY;
-
- // A private function for getting mouse position
- var track = function(ev) {
- cX = ev.pageX;
- cY = ev.pageY;
- };
-
- // A private function for comparing current and previous mouse position
- var compare = function(ev,ob) {
- ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
- // compare mouse positions to see if they've crossed the threshold
- if ( ( Math.abs(pX-cX) + Math.abs(pY-cY) ) < cfg.sensitivity ) {
- $(ob).unbind("mousemove",track);
- // set hoverIntent state to true (so mouseOut can be called)
- ob.hoverIntent_s = 1;
- return cfg.over.apply(ob,[ev]);
- } else {
- // set previous coordinates for next time
- pX = cX; pY = cY;
- // use self-calling timeout, guarantees intervals are spaced out properly (avoids JavaScript timer bugs)
- ob.hoverIntent_t = setTimeout( function(){compare(ev, ob);} , cfg.interval );
- }
- };
-
- // A private function for delaying the mouseOut function
- var delay = function(ev,ob) {
- ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t);
- ob.hoverIntent_s = 0;
- return cfg.out.apply(ob,[ev]);
- };
-
- // A private function for handling mouse 'hovering'
- var handleHover = function(e) {
- // next three lines copied from jQuery.hover, ignore children onMouseOver/onMouseOut
- var p = (e.type == "mouseover" ? e.fromElement : e.toElement) || e.relatedTarget;
- while ( p && p != this ) { try { p = p.parentNode; } catch(e) { p = this; } }
- if ( p == this ) { return false; }
-
- // copy objects to be passed into t (required for event object to be passed in IE)
- var ev = jQuery.extend({},e);
- var ob = this;
-
- // cancel hoverIntent timer if it exists
- if (ob.hoverIntent_t) { ob.hoverIntent_t = clearTimeout(ob.hoverIntent_t); }
-
- // else e.type == "onmouseover"
- if (e.type == "mouseover") {
- // set "previous" X and Y position based on initial entry point
- pX = ev.pageX; pY = ev.pageY;
- // update "current" X and Y position based on mousemove
- $(ob).bind("mousemove",track);
- // start polling interval (self-calling timeout) to compare mouse coordinates over time
- if (ob.hoverIntent_s != 1) { ob.hoverIntent_t = setTimeout( function(){compare(ev,ob);} , cfg.interval );}
-
- // else e.type == "onmouseout"
- } else {
- // unbind expensive mousemove event
- $(ob).unbind("mousemove",track);
- // if hoverIntent state is true, then call the mouseOut function after the specified delay
- if (ob.hoverIntent_s == 1) { ob.hoverIntent_t = setTimeout( function(){delay(ev,ob);} , cfg.timeout );}
- }
- };
-
- // bind the function to the two event listeners
- return this.mouseover(handleHover).mouseout(handleHover);
- };
-
-})(jQuery);
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