1302295 - Cannot drag and drop file from file picker dialog

Status: NEW

(Core :: DOM: Copy & Paste and Drag & Drop, defect, P3)

Description

[[ex-Mozilla] Agi Sferro | :agi]

Attachment: drop-from-picker.html

While testing we discovered that Firefox on Windows does not allow dragging and dropping files from the file picker dialog that opens when an <input type=file> is activated. It is not necessarily a bug, but it's definitely odd since it seems to work on Firefox on OSX and Chrome on Windows/OSX. I'm attaching a minimal repro case.

Comment 1

[Neil Deakin]

Since this is a modal dialog, this seems correct to me. Chrome on Windows actually hangs when the dialog is closed after dragging.

If anything, we should probably ignore drag events on Mac as well while a modal dialog is open.

Comment 2

[Firefox Bug Husbandry Bot]

https://wiki.mozilla.org/Bug_Triage/Projects/Bug_Handling/Bug_Husbandry#Move_fix-optionals