/*!
 * jQuery UI Effects Explode 1.13.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: Explode Effect
//>>group: Effects
/* eslint-disable max-len */
//>>description: Explodes an element in all directions into n pieces. Implodes an element to its original wholeness.
/* eslint-enable max-len */
//>>docs: http://api.jqueryui.com/explode-effect/
//>>demos: http://jqueryui.com/effect/

( function( factory ) {
"use strict";

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

// AMD. Register as an anonymous module.
define( [
"jquery",
"./effect"
], factory );
} else {

// Browser globals
factory( jQuery );
}
} )( function( $ ) {
"use strict";

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

var i, j, left, top, mx, my,
rows = options.pieces ? Math.round( Math.sqrt( options.pieces ) ) : 3,
cells = rows,
element = $( this ),
mode = options.mode,
show = mode === "show",

// Show and then visibility:hidden the element before calculating offset
offset = element.show().css( "visibility", "hidden" ).offset(),

// Width and height of a piece
width = Math.ceil( element.outerWidth() / cells ),
height = Math.ceil( element.outerHeight() / rows ),
pieces = [];

// Children animate complete:
function childComplete() {
pieces.push( this );
if ( pieces.length === rows * cells ) {
animComplete();
}
}

// Clone the element for each row and cell.
for ( i = 0; i < rows; i++ ) { // ===>
top = offset.top + i * height;
my = i - ( rows - 1 ) / 2;

for ( j = 0; j < cells; j++ ) { // |||
left = offset.left + j * width;
mx = j - ( cells - 1 ) / 2;

// Create a clone of the now hidden main element that will be absolute positioned
// within a wrapper div off the -left and -top equal to size of our pieces
element
.clone()
.appendTo( "body" )
.wrap( "<div></div>" )
.css( {
position: "absolute",
visibility: "visible",
left: -j * width,
top: -i * height
} )

// Select the wrapper - make it overflow: hidden and absolute positioned based on
// where the original was located +left and +top equal to the size of pieces
.parent()
.addClass( "ui-effects-explode" )
.css( {
position: "absolute",
overflow: "hidden",
width: width,
height: height,
left: left + ( show ? mx * width : 0 ),
top: top + ( show ? my * height : 0 ),
opacity: show ? 0 : 1
} )
.animate( {
left: left + ( show ? 0 : mx * width ),
top: top + ( show ? 0 : my * height ),
opacity: show ? 1 : 0
}, options.duration || 500, options.easing, childComplete );
}
}

function animComplete() {
element.css( {
visibility: "visible"
} );
$( pieces ).remove();
done();
}
} );

} );