multiple eventSources

[dittodhole]

atm you cannot declare multiple eventSources.

therefore i've written a little generic eventManager:

var eventManager = {
    fetchData: function (sources, callback) {
        var sourcesLength = sources.length;

        var pendingSourcesCount = sourcesLength;
        var currentData = new Array();
        for (var i = 0; i < sourcesLength; i++) {
            var source = sources[i];
            this._fetchDataFromSource(source, function (data) {
                currentData = currentData.concat(data);
                pendingSourcesCount--;
                if (!pendingSourcesCount) {
                    callback(currentData);
                }
            });
        }
    },
    _fetchDataFromSource: function (source, callback) {
        if (typeof source == 'string') {
            $.ajax({
                'url': source,
                'dataType': 'json',
                'success': function (events) {
                    callback(events);
                }
            });
        }
        else if ($.isFunction(source)) {
            source(function (events) {
                callback(events);
            });
        }
        else {
            callback(source);
        }
    }
};

which can be used eg:

    var $calendar = $('#selector').weekCalendar({
        'data': function (start, end, callback) {
            eventManager.fetchData([
                function (internalCallback) {
                    var url = 'help1.wcf';
                    var data = {
                        'start': new Date(),
                        'end': new Date()
                    };
                    $.getJSON(url, data, function (data) {
                        internalCallback(data);
                    });
                },
                function (internalCallback) {
                    var url = 'help2.wcf';
                    var data = {
                        'start': new Date(),
                        'end': new Date()
                    };
                    $.getJSON(url, data, function (data) {
                        internalCallback(data);
                    });
                }
            ], callback);
        }
    });

maybe sth like this shoule be integrated...