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   1  /*!
   2   * jQuery UI Effects Explode 1.13.1
   3   * http://jqueryui.com
   4   *
   5   * Copyright jQuery Foundation and other contributors
   6   * Released under the MIT license.
   7   * http://jquery.org/license
   8   */
   9  
  10  //>>label: Explode Effect
  11  //>>group: Effects
  12  /* eslint-disable max-len */
  13  //>>description: Explodes an element in all directions into n pieces. Implodes an element to its original wholeness.
  14  /* eslint-enable max-len */
  15  //>>docs: http://api.jqueryui.com/explode-effect/
  16  //>>demos: http://jqueryui.com/effect/
  17  
  18  ( function( factory ) {
  19      "use strict";
  20  
  21      if ( typeof define === "function" && define.amd ) {
  22  
  23          // AMD. Register as an anonymous module.
  24          define( [
  25              "jquery",
  26              "./effect"
  27          ], factory );
  28      } else {
  29  
  30          // Browser globals
  31          factory( jQuery );
  32      }
  33  } )( function( $ ) {
  34  "use strict";
  35  
  36  return $.effects.define( "explode", "hide", function( options, done ) {
  37  
  38      var i, j, left, top, mx, my,
  39          rows = options.pieces ? Math.round( Math.sqrt( options.pieces ) ) : 3,
  40          cells = rows,
  41          element = $( this ),
  42          mode = options.mode,
  43          show = mode === "show",
  44  
  45          // Show and then visibility:hidden the element before calculating offset
  46          offset = element.show().css( "visibility", "hidden" ).offset(),
  47  
  48          // Width and height of a piece
  49          width = Math.ceil( element.outerWidth() / cells ),
  50          height = Math.ceil( element.outerHeight() / rows ),
  51          pieces = [];
  52  
  53      // Children animate complete:
  54  	function childComplete() {
  55          pieces.push( this );
  56          if ( pieces.length === rows * cells ) {
  57              animComplete();
  58          }
  59      }
  60  
  61      // Clone the element for each row and cell.
  62      for ( i = 0; i < rows; i++ ) { // ===>
  63          top = offset.top + i * height;
  64          my = i - ( rows - 1 ) / 2;
  65  
  66          for ( j = 0; j < cells; j++ ) { // |||
  67              left = offset.left + j * width;
  68              mx = j - ( cells - 1 ) / 2;
  69  
  70              // Create a clone of the now hidden main element that will be absolute positioned
  71              // within a wrapper div off the -left and -top equal to size of our pieces
  72              element
  73                  .clone()
  74                  .appendTo( "body" )
  75                  .wrap( "<div></div>" )
  76                  .css( {
  77                      position: "absolute",
  78                      visibility: "visible",
  79                      left: -j * width,
  80                      top: -i * height
  81                  } )
  82  
  83                  // Select the wrapper - make it overflow: hidden and absolute positioned based on
  84                  // where the original was located +left and +top equal to the size of pieces
  85                  .parent()
  86                  .addClass( "ui-effects-explode" )
  87                  .css( {
  88                      position: "absolute",
  89                      overflow: "hidden",
  90                      width: width,
  91                      height: height,
  92                      left: left + ( show ? mx * width : 0 ),
  93                      top: top + ( show ? my * height : 0 ),
  94                      opacity: show ? 0 : 1
  95                  } )
  96                  .animate( {
  97                      left: left + ( show ? 0 : mx * width ),
  98                      top: top + ( show ? 0 : my * height ),
  99                      opacity: show ? 1 : 0
 100                  }, options.duration || 500, options.easing, childComplete );
 101          }
 102      }
 103  
 104  	function animComplete() {
 105          element.css( {
 106              visibility: "visible"
 107          } );
 108          $( pieces ).remove();
 109          done();
 110      }
 111  } );
 112  
 113  } );