/*!

 * jQuery UI Effects Shake 1.10.3

 * http://jqueryui.com

 *

 * Copyright 2013 jQuery Foundation and other contributors

 * Released under the MIT license.

 * http://jquery.org/license

 *

 * http://api.jqueryui.com/shake-effect/

 *

 * Depends:

 *	jquery.ui.effect.js

 */

(function( $, undefined ) {

$.effects.effect.shake = function( o, done ) {

	var el = $( this ),

		props = [ "position", "top", "bottom", "left", "right", "height", "width" ],

		mode = $.effects.setMode( el, o.mode || "effect" ),

		direction = o.direction || "left",

		distance = o.distance || 20,

		times = o.times || 3,

		anims = times * 2 + 1,

		speed = Math.round(o.duration/anims),

		ref = (direction === "up" || direction === "down") ? "top" : "left",

		positiveMotion = (direction === "up" || direction === "left"),

		animation = {},

		animation1 = {},

		animation2 = {},

		i,

		// we will need to re-assemble the queue to stack our animations in place

		queue = el.queue(),

		queuelen = queue.length;

	$.effects.save( el, props );

	el.show();

	$.effects.createWrapper( el );

	// Animation

	animation[ ref ] = ( positiveMotion ? "-=" : "+=" ) + distance;

	animation1[ ref ] = ( positiveMotion ? "+=" : "-=" ) + distance * 2;

	animation2[ ref ] = ( positiveMotion ? "-=" : "+=" ) + distance * 2;

	// Animate

	el.animate( animation, speed, o.easing );

	// Shakes

	for ( i = 1; i < times; i++ ) {

		el.animate( animation1, speed, o.easing ).animate( animation2, speed, o.easing );

	}

	el

		.animate( animation1, speed, o.easing )

		.animate( animation, speed / 2, o.easing )

		.queue(function() {

			if ( mode === "hide" ) {

				el.hide();

			}

			$.effects.restore( el, props );

			$.effects.removeWrapper( el );

			done();

		});

	// inject all the animations we just queued to be first in line (after "inprogress")

	if ( queuelen > 1) {

		queue.splice.apply( queue,

			[ 1, 0 ].concat( queue.splice( queuelen, anims + 1 ) ) );

	}

	el.dequeue();

};

})(jQuery);