jkuchar/MultipleFileUpload

/**
 * Form submitted callback.
 * @param {DOM Element} form
 * @param {Object} e
 * @param {jQuery Element} $submitBtn
 * @returns {Boolean}
 */
function formSubmitted(form, e, $submitBtn) {

    /**
     *     COMMON CODEBASE FOR ALL INTERFACES (matter of refactoring?)
     */

    if (!$submitBtn && form['nette-submittedBy']) {
        $submitBtn = $(form['nette-submittedBy']);
    }

    // Do not upload files if
    //    a) submit button not recognized
    //    b) 'cancel' button clicked
    if (!$submitBtn || $submitBtn.attr('formnovalidate') === '') {
        return true;
    }

    var abortXhr = false;
    function preventSubmission() {
        e.preventDefault();
        e.stopImmediatePropagation();
        abortXhr = true;
    }

    /**
     *     COMMON CODEBASE FOR ALL INTERFACES END
     */


    var multipleFileUploadFields = $('.MultipleFileUpload', form);
    var uploadersInQueue = multipleFileUploadFields.length;
    if (uploadersInQueue > 0) {
        multipleFileUploadFields.each(function() {
            var swfu = $('.swfuflashupload', this).swfuInstance(),
                queueSize = 0;

            try {
                queueSize = swfu.getStats().files_queued;
            } catch (ex) {
            }

            if (queueSize > 0) {
                preventSubmission();
                swfu.startUpload();
                $('.swfuflashupload', this).bind('queueComplete', function() {
                    uploadersInQueue--;
                    if (uploadersInQueue === 0) {
                        // send form using submit button so it is included in request
                        // so form['submitButtonName']->isSubmittedBy() can be used in Nette form processing
                        $submitBtn.click();
                    }
                });
            } else {
                uploadersInQueue--;
            }
        });
    }
    return !abortXhr;
}