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[Bug 111939] Re: Alt-Tab - Not possible to alt-tab during a drag-and-drop operation

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: Marco Trevisan (Treviño) <mail@xxxxxxxxx>
Date: Fri, 30 Oct 2015 14:12:42 -0000
Reply-to: Bug 111939 <111939@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Tags removed: rls-w-incoming
** Tags added: rls-x-incoming

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https://bugs.launchpad.net/bugs/111939

Title:
  Alt-Tab - Not possible to alt-tab during a drag-and-drop operation

Status in Ayatana Design:
  Fix Committed
Status in One Hundred Papercuts:
  Fix Released
Status in metacity:
  Fix Released
Status in Unity:
  Fix Released
Status in Xfwm4:
  Unknown
Status in compiz package in Ubuntu:
  Triaged
Status in metacity package in Ubuntu:
  Fix Released
Status in mutter package in Ubuntu:
  Fix Released
Status in unity package in Ubuntu:
  Fix Released

Bug description:
  In some window managers (I believe KWin is one of them) the user is
  able to initiate a drag-and-drop operation, then press alt-tab to
  raise a window that will be the drop target, and only then release the
  mouse button so that the drag-and-drop is performed. This is not
  possible with Metacity, Beryl, Compiz or Xfwm. It is unclear to me
  whether this is a limitation of the window manager or some other part
  of the system.

  
  ------------------------------------------

  
  Use Case:

  Dragging movie/audio files from nautilus to totem.

  Steps to Reproduce:

  1.  open totem media player full screen
  2.  open nautilus full screen
  3.  browse to media files
  4.  select some media files (e.g. a movie file) and move it to start a drag and drop operation
  5.  press Alt+Tab

  Observations:

  Nothing happens.

  Expected Results:

  Alt+Tab should allow the user to switch tasks and preserve the drag
  state, so the user can drag files from one application to another.

  Notes:

  Drag and drop works if the applications are tiled to the left/right of
  each other, or if they are windowed so it should work when they are
  full screen.

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