Java JFileChooser drag n drop (dnd) does not work on the Mac

Discussion in 'Mac Programming' started by djangohead, Jan 5, 2010.

  1. djangohead macrumors newbie

    Joined:
    Jan 5, 2010
    Location:
    Manchester
    #1
    I am trying to create an uploader applet using JFileChooser for file selection. I want the user to be able to drag files from JFileChooser into another component.

    I have this code working in Windows but the drag event is simply not registering on the Mac. Left click and drag down simply selects all the the directories/files within the current directory. Is this a bug related to Apple's implementation of Java, or Apple's custom implementation of JFileChooser? I can get drag/drop events to work using any other component, just not JFileChooser.

    Any help on this issue is a massive help as I cannot find anything related to the problem I'm having after searching on the net.

    System:

    Mac OS X Snow Leapord Version 10.6.2

    java version "1.6.0_17"
    Java(TM) SE Runtime Environment (build 1.6.0_17-b04-248-10M3025)
    Java HotSpot(TM) 64-Bit Server VM (build 14.3-b01-101, mixed mode)

    Thank you
     
  2. chown33 macrumors 604

    Joined:
    Aug 9, 2009
    #2
    That doesn't sound like a Mac gesture. I just tried it using the native dialogs in TextEdit and several other apps, and no combination of clicks and modifier keys was able to start a drag.

    It seems that the inability to drag files out of a file-chooser isn't just Java. You may have to rethink your strategy.

    EDIT: I take it back. It can do a drag out in native dialogs. It only starts a drag when the click is on an unselected item, and if movement starts within a brief interval.

    Still no-go in Java file-chooser though. Try an AWT FileDialog instead, or rethink your strategy.
     
  3. Transporteur macrumors 68030

    Joined:
    Nov 30, 2008
    Location:
    UK
    #3
    Yes, FileDialog does the job and is definitely the way to go on the Mac to get the look and feel of native OS X apps.
     
  4. wrldwzrd89 macrumors G5

    wrldwzrd89

    Joined:
    Jun 6, 2003
    Location:
    Solon, OH
    #4
    If you happen to need file type filters (which don't work in FileDialogs), AND need a native look and feel, give the Quaqua library a try. I use it for my Java development.
     
  5. Transporteur macrumors 68030

    Joined:
    Nov 30, 2008
    Location:
    UK
    #5
    Nice find. Thanks for that!
     

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