Would it be possible using this library? I've used this one for uploading a single file or a batch of files but it only creates a single http request, just like the samples in its github page. What I'm looking for is have an upload queue for the user's upload files so that he/she can still select another file for upload while previous file is still in uploading.
You can just have an array (queue) in your javascript code that holds all the files and once a new file is selected start uploading it and push it to the array.
Alternatively you could achieve this by adding ngf-keep="true" directive which will keep adding the new files to the model while holding the previous ones.