/*
 * jQuery Asynchronous Plugin 1.0 RC1
 *
 * Copyright (c) 2008 Vincent Robert (genezys.net)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 */
(function($) {

    // opts.delay : (default 10) delay between async call in ms
    // opts.bulk : (default 500) delay during which the loop can continue synchronously without yielding the CPU
    // opts.test : (default true) function to test in the while test part
    // opts.loop : (default empty) function to call in the while loop part
    // opts.end : (default empty) function to call at the end of the while loop
    $.whileAsync = function(opts) {
        var delay = Math.abs(opts.delay) || 10,
            bulk = isNaN(opts.bulk) ? 500 : Math.abs(opts.bulk),
            test = opts.test ||
            function() {
                return true;
            },
            loop = opts.loop ||
            function() {},
            end = opts.end ||
            function() {};

        (function() {

            var t = false,
                begin = new Date();

            while (t = test()) {
                loop();
                if (bulk === 0 || (new Date() - begin) > bulk) {
                    break;
                }
            }
            if (t) {
                setTimeout(arguments.callee, delay);
            }
            else {
                end();
            }

        })();
    }

    // opts.delay : (default 10) delay between async call in ms
    // opts.bulk : (default 500) delay during which the loop can continue synchronously without yielding the CPU
    // opts.loop : (default empty) function to call in the each loop part, signature: function(index, value) this = value
    // opts.end : (default empty) function to call at the end of the each loop
    $.eachAsync = function(array, opts) {
        var i = 0,
            l = array.length,
            loop = opts.loop ||
            function() {};

        $.whileAsync(
        $.extend(opts, {
            test: function() {
                return i < l;
            },
            loop: function() {
                var val = array[i];
                return loop.call(val, i++, val);
            }
        }));
    }

    $.fn.eachAsync = function(opts) {
        $.eachAsync(this, opts);
        return this;
    }

})(jQuery)