/*!
* jQuery UI Effects Explode 1.10.1
* http://jqueryui.com
*
* Copyright 2013 jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*
* http://api.jqueryui.com/explode-effect/
*
* Depends:
* jquery.ui.effect.js
*/
(function( $, undefined ) {

$.effects.effect.explode = function( o, done ) {

var rows = o.pieces ? Math.round( Math.sqrt( o.pieces ) ) : 3,
cells = rows,
el = $( this ),
mode = $.effects.setMode( el, o.mode || "hide" ),
show = mode === "show",

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

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

// loop
i, j, left, top, mx, my;

// 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
el
.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
}, o.duration || 500, o.easing, childComplete );
}
}

function animComplete() {
el.css({
visibility: "visible"
});
$( pieces ).remove();
if ( !show ) {
el.hide();
}
done();
}
};

})(jQuery);