60 lines
1.5 KiB
JavaScript
60 lines
1.5 KiB
JavaScript
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/*! Copyright (c) 2009 Brandon Aaron (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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* Version: 3.0.2
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*
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* Requires: 1.2.2+
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*/
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(function($) {
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var types = ['DOMMouseScroll', 'mousewheel'];
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$.event.special.mousewheel = {
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setup: function() {
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if ( this.addEventListener )
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for ( var i=types.length; i; )
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this.addEventListener( types[--i], 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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if ( this.removeEventListener )
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for ( var i=types.length; i; )
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this.removeEventListener( types[--i], handler, false );
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else
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this.onmousewheel = null;
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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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function handler(event) {
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var args = [].slice.call( arguments, 1 ), delta = 0, returnValue = true;
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event = $.event.fix(event || window.event);
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event.type = "mousewheel";
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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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// Add events and delta to the front of the arguments
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args.unshift(event, delta);
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return $.event.handle.apply(this, args);
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}
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})(jQuery);
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