/* 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.
 *
 * $LastChangedDate$
 * $Rev$
 *
 * Version: @VERSION
 * 
 * Requires: $ 1.2.2+
 */

(function($) { $.event.special.mousewheel = { setup: function() { var handler = $.event.special.mousewheel.handler; if ($.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); $.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"; args.unshift(delta); 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);