/*!

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* jQuery UI Effects Bounce 1.12.1

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* http://jqueryui.com

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*

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* Copyright jQuery Foundation and other contributors

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* Released under the MIT license.

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* http://jquery.org/license

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*/

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//>>label: Bounce Effect

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//>>group: Effects

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//>>description: Bounces an element horizontally or vertically n times.

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//>>docs: http://api.jqueryui.com/bounce-effect/

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//>>demos: http://jqueryui.com/effect/

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( function( factory ) {

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if ( typeof define === "function" && define.amd ) {

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// AMD. Register as an anonymous module.

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define( [

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"jquery",

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"./effect"

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], factory );

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} else {

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// Browser globals

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factory( jQuery );

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}

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}( function( $ ) {

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return $.effects.define( "bounce", function( options, done ) {

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var upAnim, downAnim, refValue,

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element = $( this ),

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// Defaults:

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mode = options.mode,

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hide = mode === "hide",

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show = mode === "show",

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direction = options.direction || "up",

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distance = options.distance,

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times = options.times || 5,

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// Number of internal animations

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anims = times * 2 + ( show || hide ? 1 : 0 ),

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speed = options.duration / anims,

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easing = options.easing,

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// Utility:

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

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

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i = 0,

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queuelen = element.queue().length;

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$.effects.createPlaceholder( element );

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refValue = element.css( ref );

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// Default distance for the BIGGEST bounce is the outer Distance / 3

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if ( !distance ) {

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distance = element[ ref === "top" ? "outerHeight" : "outerWidth" ]() / 3;

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}

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if ( show ) {

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downAnim = { opacity: 1 };

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downAnim[ ref ] = refValue;

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// If we are showing, force opacity 0 and set the initial position

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// then do the "first" animation

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element

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.css( "opacity", 0 )

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.css( ref, motion ? -distance * 2 : distance * 2 )

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.animate( downAnim, speed, easing );

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}

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// Start at the smallest distance if we are hiding

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if ( hide ) {

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distance = distance / Math.pow( 2, times - 1 );

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}

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downAnim = {};

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downAnim[ ref ] = refValue;

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// Bounces up/down/left/right then back to 0 -- times * 2 animations happen here

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

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upAnim = {};

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upAnim[ ref ] = ( motion ? "-=" : "+=" ) + distance;

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element

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.animate( upAnim, speed, easing )

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.animate( downAnim, speed, easing );

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distance = hide ? distance * 2 : distance / 2;

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}

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// Last Bounce when Hiding

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if ( hide ) {

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upAnim = { opacity: 0 };

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upAnim[ ref ] = ( motion ? "-=" : "+=" ) + distance;

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element.animate( upAnim, speed, easing );

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}

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element.queue( done );

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$.effects.unshift( element, queuelen, anims + 1 );

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} );

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} ) );

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