1124775 - Drag and Drop dataTransfer.types contains Files when there are none

Status: UNCONFIRMED

(Core :: DOM: Copy & Paste and Drag & Drop, defect, P5)

Description

[james.gorrie]

Attachment: dndbroken.gif

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:32.0) Gecko/20100101 Firefox/32.0
Build ID: 20140923175406

Steps to reproduce:

Drag an image from the same or another Firefox tab onto a dropzone.

See here for more details:
http://jsfiddle.net/xseFs/46/

Drag an image from your file system (Finder, Nautilus etc) over the test are, if it contains files, you will see it change to true, and ondrop, you will see the file list.

Drag an image from another tab (Google images et al) and it will say it contains files, but when you drop there is nothing there.


Actual results:

The event.dataTransfer.types contains the value "Files".
When dropping there are no files in event.dataTransfer.files.


Expected results:

"Files" should not be in the event.dataTransfer.types when dragging an image over from another page / tab.

Comment 1

[Lance Caraccioli]

Ubuntu 14.10
Firefox 36.0.1
I see this occuring in multiple scenarios
- dragging plain text from gedit
- dragging links from other browser window
- dragging image from other browser window

In these cases dataTransfer.types include 'Files' when it should not.

Comment 2

[Nickolay_Ponomarev]

Thanks for the report! This is the same issue as bug 603062, right?

Comment 3

[james.gorrie]

Yip - same bug - it might be worth keeping the example though.

Comment 5

[Neil Deakin]

I tested this on Mac or Linux and don't see this bug.

Comment 6

[Jens Stutte [:jstutte]]

Bulk-downgrade of unassigned, 4 years untouched DOM/Storage bugs' priority.

If you have reason to believe this is wrong (especially for the severity), please write a comment and ni :jstutte.