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