SWFUpload what happens after file select?

Question

I'm lost here. I'm trying to set up a simple file upload, handled by SWFUpload. After file selection nothing happens. I don't see a request being sent, and there is nothing in my console. Is the swf object supposed to call my upload_url page immediately?

        var swfu,jobForm;
        var j = jQuery.noConflict();
        j(window).load(function() {
            jobForm = j('.admin-atomic-form form');
            swfu = new SWFUpload({
                upload_url : "URL/upload.php",
                flash_url : "URL/swfupload.swf",
                file_size_limit : "20 MB",
                file_types : "*.doc;*.pdf;*.rtf;*docx;*.jpg;",
                //file_types_description : "All Files",
                file_upload_limit : "1",
                button_placeholder_id : "swfuploader",
                button_image_url : "URL/file-browse.png",
                button_width: 100,
                button_height: 30,
                upload_start_handler : uploadStart,
                upload_success_handler : uploadSuccess
            }); 
            //jobForm.form.submit(function(ev){ev.preventDefault()})
        });

        function uploadStart(){
            //.submit()
            console.log(this,'start');
        };
        function uploadSuccess(){
            //form.submit()
            console.log('success');
        }

Answer 1

SWFUploadObj.startUpload(); needs to be fired and that's what initiated the POST request to the specified upload_url. If this method is fired by some default setting, it certainly wasn't doing it for me.

Here is an example of a few of my functions:

// Bound to file_queued_handler : sets a flag that there is a file waiting to upload 
function swfuFileQueued(file){
    resumeQueued = true;
    $j('#browseFile').val(file.name);
}


//Bound to form submit event:
//a successful upload will submit this form again once the success response with the server-moved and renamed filename comes back from the file upload handling script

function swfuFormSubmit(ev){
    if(uploadSuccess){
        return true;
    } else {
        if(resumeQueued == true){
            ev.preventDefault();
            swfuUploadStart(); // see next function
        } else {
            return true;
        }
    }
}

function swfuUploadStart(){
    try {
        swfu.startUpload(); // <-- The actual method that begins the file upload request
    } catch (e) {
    }
    return false;
}

function swfuProgress(){ ...
function swfuError(){ ...
function swfuSuccess(){ 
    //update input element containing filename or id to send with form
    //update a status box with "Success"
    //uploadSuccess = true 
    //form.submit() once more, this time uploadSuccess will tell the function to continue on and actually submit itself

Useful URL to understand SWFUpload process : http://www.dconstructing.com/2010/07/08/making-swfupload-work