923931 - Clear HTMLInputElement.files immediately after a user picks a directory

Status: RESOLVED DUPLICATE of bug 912492

(Core :: DOM: Core & HTML, defect)

Description

[Jonathan Watt [:jwatt]]

Right now when the user picks a directory we leave the HTMLInputElement.files FileList alone until the directory scan completes (potentially many seconds later), and only then overwrite it with the new list of files. I think we should really clear the list as soon as we know that we're going to start building a new file list to avoid content author confusion.

I'm particularly thinking that the extra async activity and delay inherent to directory picking (vs file picking) may mean that authors look at HTMLInputElement.files too early and start reading the old list of files thinking that it's the completed result of the directory picking operation.

Comment 1

[Jonathan Watt [:jwatt]]

Attachment: patch

Comment 2

[Jonathan Watt [:jwatt]]

Forgot I opened bug 912492 for this. I'll move the patch there.