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   1  /*!
   2   * jQuery UI Effects Pulsate 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: Pulsate Effect
  11  //>>group: Effects
  12  //>>description: Pulsates an element n times by changing the opacity to zero and back.
  13  //>>docs: https://api.jqueryui.com/pulsate-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  
  35  return $.effects.define( "pulsate", "show", function( options, done ) {
  36      var element = $( this ),
  37          mode = options.mode,
  38          show = mode === "show",
  39          hide = mode === "hide",
  40          showhide = show || hide,
  41  
  42          // Showing or hiding leaves off the "last" animation
  43          anims = ( ( options.times || 5 ) * 2 ) + ( showhide ? 1 : 0 ),
  44          duration = options.duration / anims,
  45          animateTo = 0,
  46          i = 1,
  47          queuelen = element.queue().length;
  48  
  49      if ( show || !element.is( ":visible" ) ) {
  50          element.css( "opacity", 0 ).show();
  51          animateTo = 1;
  52      }
  53  
  54      // Anims - 1 opacity "toggles"
  55      for ( ; i < anims; i++ ) {
  56          element.animate( { opacity: animateTo }, duration, options.easing );
  57          animateTo = 1 - animateTo;
  58      }
  59  
  60      element.animate( { opacity: animateTo }, duration, options.easing );
  61  
  62      element.queue( done );
  63  
  64      $.effects.unshift( element, queuelen, anims + 1 );
  65  } );
  66  
  67  } );