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/* |
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Copyright (c) 2009, Yahoo! Inc. All rights reserved. |
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Code licensed under the BSD License: |
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http://developer.yahoo.net/yui/license.txt |
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version: 3.0.0 |
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build: 1549 |
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*/ |
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YUI.add('event-mousewheel', function(Y) { |
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/** |
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* Adds mousewheel event support |
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* @module event |
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* @submodule event-mousewheel |
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*/ |
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var DOM_MOUSE_SCROLL = 'DOMMouseScroll', |
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fixArgs = function(args) { |
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var a = Y.Array(args, 0, true), target; |
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if (Y.UA.gecko) { |
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a[0] = DOM_MOUSE_SCROLL; |
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target = Y.config.win; |
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} else { |
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target = Y.config.doc; |
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} |
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if (a.length < 3) { |
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a[2] = target; |
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} else { |
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a.splice(2, 0, target); |
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} |
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return a; |
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}; |
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/** |
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* Mousewheel event. This listener is automatically attached to the |
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* correct target, so one should not be supplied. Mouse wheel |
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* direction and velocity is stored in the 'mouseDelta' field. |
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* @event mousewheel |
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* @param type {string} 'mousewheel' |
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* @param fn {function} the callback to execute |
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* @param context optional context object |
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* @param args 0..n additional arguments to provide to the listener. |
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* @return {EventHandle} the detach handle |
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* @for YUI |
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*/ |
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Y.Env.evt.plugins.mousewheel = { |
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on: function() { |
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return Y.Event._attach(fixArgs(arguments)); |
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}, |
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detach: function() { |
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return Y.Event.detach.apply(Y.Event, fixArgs(arguments)); |
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} |
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}; |
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}, '3.0.0' ,{requires:['node-base']}); |