Change Details

UploadWizard UI performance is abysmal when the user is adding many files to upload at once (like 20-30 or so). The page locks up for a while, and you can actually see it create and insert the box for each file into the page, one by one. I'm sure that the fact that we insert one-by-one doesn't help (we should be building the UI "off-screen" and insert it into DOM; this would require a big rewrite of how we pass DOM elements into functions that "fill" them). The fact that we start the uploads of all the files immediately also definitely is not a good thing here. But it seems too bad to be just that, so someone should investigate. I recorded a timeline in Chrome dev tools of me choosing 30 files from the dialog. (Yes, it took this long.) {F3121097} {F3121106} (356 MB uncompressed)