source: trunk/themes/default/js/ui/jquery.ui.effect-shake.js @ 28780

/*!
 * jQuery UI Effects Shake 1.10.4
 * http://jqueryui.com
 *
 * Copyright 2014 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);