Media uploader (plupload) - exceeding max file size doesn't currently give feedback/error

[WPsites]

When you upload an image of a larger size than the web server and plupload allows nothing happens.

Surely it should let the user know the file is too large and needs to be less than X.

I know it says in the text below that the max file size is X but when you are uploading media you don't always know how big the file you are uploading is. currently if you try uploading a larger file nothing happens, no upload, no warning, nothing.

I can confirm this in Firefox, Chrome uploading media from within a post and from the media section.

Confirmed. The error is displayed when uploading from Media Library, but not from Edit Post screen.

Show error message when upload size exceeds max upload limit

Wait, there's a problem with 19001.patch​ if you add a file under the size limit, the one over the limit, it duplicates the files in the queue list. Working on a fix.

Show error message, don't create duplicate file entries in the queue

When you add one file that's in error, the Error event fired and the FilesAdded event was never being fired. 19001.1.patch​ adds a check to ensure that the file is in the queue list so that an error message can be displayed next to the file name.

When you upload multiple files, the Error event was still being fired, but when the upload the FilesAdded event was still being called after each upload was done (regardless of error state). This is why there were duplicates in the file list in 19001.patch​. In the 19001.1.patch​, I added a check in the fileQueued() function to make sure duplicates weren't being created.

When uploading a file that is too large, the error message is:

You may only upload 1 file.

This may be confusing for some users. It is only one file, it just happens to be larger than the allowed upload size.

Assigning to azaozz for review.

If you choose let's say 5 files in one go to upload and drag them across, there should be according error messages (too big - wrong extension - etc). I'm sure you are onto that.

ALSO: the "Cancel Upload" button does not seem to work!!!

Seems this was fixed as part of a different ticket. Feel free to reopen if there is still no error shown for files that are too big.

Fixed in [19100].

@azaozz, when uploading multiple files, some which are too large, there is no error message displayed. All files show up in the queue list. This can be replicated via drag-and-drop and via "select files." Tested in Firefox and Chrome.

Screen shot: ​http://cl.ly/2P3Q2s3a2p1J2S2X1Q1Y

Is this expected behavior?

[19262]