/*
 * jQuery UI Effects Explode @VERSION
 *
 * Copyright 2010, AUTHORS.txt
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://jquery.org/license
 *
 * http://docs.jquery.com/UI/Effects/Explode
 *
 * Depends:
 *	jquery.effects.core.js
 */
(function($) {

$.effects.explode = function(o) {

	return this.queue(function() {

	var rows = o.options.pieces ? Math.round(Math.sqrt(o.options.pieces)) : 3;
	var cells = o.options.pieces ? Math.round(Math.sqrt(o.options.pieces)) : 3;

	o.options.mode = o.options.mode == 'toggle' ? ($(this).is(':visible') ? 'hide' : 'show') : o.options.mode;
	var el = $(this).show().css('visibility', 'hidden');
	var offset = el.offset();

	//Substract the margins - not fixing the problem yet.
	offset.top -= parseInt(el.css("marginTop"),10) || 0;
	offset.left -= parseInt(el.css("marginLeft"),10) || 0;

	var width = el.outerWidth(true);
	var height = el.outerHeight(true);

	for(var i=0;i<rows;i++) { // =
		for(var j=0;j<cells;j++) { // ||
			el
				.clone()
				.appendTo('body')
				.wrap('<div></div>')
				.css({
					position: 'absolute',
					visibility: 'visible',
					left: -j*(width/cells),
					top: -i*(height/rows)
				})
				.parent()
				.addClass('ui-effects-explode')
				.css({
					position: 'absolute',
					overflow: 'hidden',
					width: width/cells,
					height: height/rows,
					left: offset.left + j*(width/cells) + (o.options.mode == 'show' ? (j-Math.floor(cells/2))*(width/cells) : 0),
					top: offset.top + i*(height/rows) + (o.options.mode == 'show' ? (i-Math.floor(rows/2))*(height/rows) : 0),
					opacity: o.options.mode == 'show' ? 0 : 1
				}).animate({
					left: offset.left + j*(width/cells) + (o.options.mode == 'show' ? 0 : (j-Math.floor(cells/2))*(width/cells)),
					top: offset.top + i*(height/rows) + (o.options.mode == 'show' ? 0 : (i-Math.floor(rows/2))*(height/rows)),
					opacity: o.options.mode == 'show' ? 1 : 0
				}, o.duration || 500);
		}
	}

	// Set a timeout, to call the callback approx. when the other animations have finished
	setTimeout(function() {

		o.options.mode == 'show' ? el.css({ visibility: 'visible' }) : el.css({ visibility: 'visible' }).hide();
				if(o.callback) o.callback.apply(el[0]); // Callback
				el.dequeue();

				$('div.ui-effects-explode').remove();

	}, o.duration || 500);


	});

};

})(jQuery);