DownloadQueueManager

Add a new object to the queue. Will not queue completed downloads or current downloads.

Cancels an active download or removes it from queue depending on where it is.

Refreshes the queue flow with the same value, but copied. Good to run if the downloads are affected by some outside value change.

Start the queue, marks all queue objects as in progress. Note that this may run twice without the service restarting because MainActivity may be recreated.

Start a real download from the first item in the queue

Removes all queued items

Removes all objects with the same id from the internal persistent queue

Will move the download queue wrapper to a new position in the queue. If the item does not exist it will also insert it.