1/*!
  2 * jQuery UI Effects Bounce 1.13.3
  3 * https://jqueryui.com
  4 *
  5 * Copyright OpenJS Foundation and other contributors
  6 * Released under the MIT license.
  7 * https://jquery.org/license
  8 */
  9
 10//>>label: Bounce Effect
 11//>>group: Effects
 12//>>description: Bounces an element horizontally or vertically n times.
 13//>>docs: https://api.jqueryui.com/bounce-effect/
 14//>>demos: https://jqueryui.com/effect/
 15
 16( function( factory ) {
 17	"use strict";
 18
 19	if ( typeof define === "function" && define.amd ) {
 20
 21		// AMD. Register as an anonymous module.
 22		define( [
 23			"jquery",
 24			"../version",
 25			"../effect"
 26		], factory );
 27	} else {
 28
 29		// Browser globals
 30		factory( jQuery );
 31	}
 32} )( function( $ ) {
 33"use strict";
 34
 35return $.effects.define( "bounce", function( options, done ) {
 36	var upAnim, downAnim, refValue,
 37		element = $( this ),
 38
 39		// Defaults:
 40		mode = options.mode,
 41		hide = mode === "hide",
 42		show = mode === "show",
 43		direction = options.direction || "up",
 44		distance = options.distance,
 45		times = options.times || 5,
 46
 47		// Number of internal animations
 48		anims = times * 2 + ( show || hide ? 1 : 0 ),
 49		speed = options.duration / anims,
 50		easing = options.easing,
 51
 52		// Utility:
 53		ref = ( direction === "up" || direction === "down" ) ? "top" : "left",
 54		motion = ( direction === "up" || direction === "left" ),
 55		i = 0,
 56
 57		queuelen = element.queue().length;
 58
 59	$.effects.createPlaceholder( element );
 60
 61	refValue = element.css( ref );
 62
 63	// Default distance for the BIGGEST bounce is the outer Distance / 3
 64	if ( !distance ) {
 65		distance = element[ ref === "top" ? "outerHeight" : "outerWidth" ]() / 3;
 66	}
 67
 68	if ( show ) {
 69		downAnim = { opacity: 1 };
 70		downAnim[ ref ] = refValue;
 71
 72		// If we are showing, force opacity 0 and set the initial position
 73		// then do the "first" animation
 74		element
 75			.css( "opacity", 0 )
 76			.css( ref, motion ? -distance * 2 : distance * 2 )
 77			.animate( downAnim, speed, easing );
 78	}
 79
 80	// Start at the smallest distance if we are hiding
 81	if ( hide ) {
 82		distance = distance / Math.pow( 2, times - 1 );
 83	}
 84
 85	downAnim = {};
 86	downAnim[ ref ] = refValue;
 87
 88	// Bounces up/down/left/right then back to 0 -- times * 2 animations happen here
 89	for ( ; i < times; i++ ) {
 90		upAnim = {};
 91		upAnim[ ref ] = ( motion ? "-=" : "+=" ) + distance;
 92
 93		element
 94			.animate( upAnim, speed, easing )
 95			.animate( downAnim, speed, easing );
 96
 97		distance = hide ? distance * 2 : distance / 2;
 98	}
 99
100	// Last Bounce when Hiding
101	if ( hide ) {
102		upAnim = { opacity: 0 };
103		upAnim[ ref ] = ( motion ? "-=" : "+=" ) + distance;
104
105		element.animate( upAnim, speed, easing );
106	}
107
108	element.queue( done );
109
110	$.effects.unshift( element, queuelen, anims + 1 );
111} );
112
113} );
114