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/* Copyright (c) 2006 Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
* Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
* and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
* Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers.
* Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
*
* $LastChangedDate: 2007-12-14 23:57:10 -0600 (Fri, 14 Dec 2007) $
* $Rev: 4163 $
*
* Version: @VERSION
*
* Requires: $ 1.2.2+
*/
(function($) {
$.event.special.mousewheel = {
setup: function() {
var handler = $.event.special.mousewheel.handler;
// Fix pageX, pageY, clientX and clientY for mozilla
if ( $.browser.mozilla )
$(this).bind('mousemove.mousewheel', function(event) {
$.data(this, 'mwcursorposdata', {
pageX: event.pageX,
pageY: event.pageY,
clientX: event.clientX,
clientY: event.clientY
});
});
if ( this.addEventListener )
this.addEventListener( ($.browser.mozilla ? 'DOMMouseScroll' : 'mousewheel'), handler, false);
else
this.onmousewheel = handler;
},
teardown: function() {
var handler = $.event.special.mousewheel.handler;
$(this).unbind('mousemove.mousewheel');
if ( this.removeEventListener )
this.removeEventListener( ($.browser.mozilla ? 'DOMMouseScroll' : 'mousewheel'), handler, false);
else
this.onmousewheel = function(){};
$.removeData(this, 'mwcursorposdata');
},
handler: function(event) {
var args = Array.prototype.slice.call( arguments, 1 );
event = $.event.fix(event || window.event);
// Get correct pageX, pageY, clientX and clientY for mozilla
$.extend( event, $.data(this, 'mwcursorposdata') || {} );
var delta = 0, returnValue = true;
if ( event.wheelDelta ) delta = event.wheelDelta/120;
if ( event.detail ) delta = -event.detail/3;
if ( $.browser.opera ) delta = -event.wheelDelta;
event.data = event.data || {};
event.type = "mousewheel";
// Add delta to the front of the arguments
args.unshift(delta);
// Add event to the front of the arguments
args.unshift(event);
return $.event.handle.apply(this, args);
}
};
$.fn.extend({
mousewheel: function(fn) {
return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel");
},
unmousewheel: function(fn) {
return this.unbind("mousewheel", fn);
}
});
})(jQuery);
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