485287 - When dragging an image from Firefox into other Mac OS X applications, The NSFilesPromisePboardType does not provide file names for use by namesOfPromisedFilesDroppedAtDestination:

Status: RESOLVED INCOMPLETE

(Core :: Widget: Cocoa, defect, P3)

Description

[wintersoft]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.6) Gecko/2009011912 Firefox/3.0.6
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.6) Gecko/2009011912 Firefox/3.0.6

I am writing a Cocoa application that receives images dragged and dropped from within Firefox or Safari using the NSFilesPromisePboardType. Firefox should provide a file name via the namesOfPromisedFilesDroppedAtDestination: callback method but instead it just returns an empty string. Safari correctly provides a file name.

The source code for the test application used in the screencast that demonstrates this bug is available at http://aptonic.com/development/testcases/DraggingFilePromiseTestCase.zip

Reproducible: Always

Steps to Reproduce:
Drag an image from a Firefox web page into an application that accepts the NSFilesPromisePboardType dragging type.
Actual Results:  
Firefox provides an empty string when asked for the file name via the namesOfPromisedFilesDroppedAtDestination:

Expected Results:  
Firefox should provide the file name for the dragged image like Safari does.

Screencast at http://aptonic.com/development/screencasts/Firefox%20Drag%20Bug.mov

Test case used in screencast available at http://aptonic.com/development/testcases/DraggingFilePromiseTestCase.zip

This bug also exists in Firefox-3.6a1pre.

Comment 1

[Michael Tsai (C-Command Software)]

I'm seeing this bug, too, with Firefox 3.6.3 on Mac OS X 10.6.3.

Comment 2

[Steven Michaud [:smichaud] (Retired)]

Is this still happening with current Firefox versions, on current versions of OS X?

Comment 3

[henrik]

Yes, it's still happening in OSX Mavericks 10.9.1 and Firefox 27.0 (rev 5a11c57ceaa7)

Comment 4

[Ben]

Still there, Firefox 32.0.2. First reported 5 years ago…

Comment 5

[Stephen A Pohl [:spohl]]

Our implementation of namesOfPromisedFilesDroppedAtDestination: was removed in bug 1325770 as a result of switching DnD APIs in bug 1235162. Also, the test files from comment 0 are no longer available. If this is still an issue, please reopen and attach the test files to this bug. Thanks!