I have a question concerning rtmedia uploader, when we select files (images) and when they are displayed (before the upload). I added a button under the uploader. I would like it to “activate” only if image previews are ready. For example, if I click at this moment, when previews are still not ready :
It would wait until all photos are ready:
and then for example we can access the page generated by the click on the button. Is there a hook or something to know if the thumbnails are ready/displayed?