[KDE/Mac] Review Request 120573: [OS X] make KDE's trash use the OS X trash

[David Faure]

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https://git.reviewboard.kde.org/r/120573/#review68648
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Almost there :-)

Re your earlier comments:
- trashimpl.h is completely internal to the kioslave, adding methods there is no problem
- trashForMountPoint is called when trashing a file that is on a different partition than HOME.
I can see it being called when I do this, on Linux:

    cd /tmp
    touch foo
    export KDE_FORK_SLAVES=1
    kde-cp foo trash:/

The debug output from kio_trash (which appears in the same terminal due to the use of KDE_FORK_SLAVES=1) says
 TrashImpl::findTrashDirectory: mountPoint= "/"  trashDir= ""
which is one line below the call to trashForMountPoint, and prints out its result. So it's called for sure :-)


kioslave/trash/kcmtrash.cpp
<https://git.reviewboard.kde.org/r/120573/#comment47855>

    you're right, this didn't exist in Qt4. Please revert to Q_OS_MAC then :-)



kioslave/trash/trashimpl.h
<https://git.reviewboard.kde.org/r/120573/#comment47856>

    the comment is wrong, this is called on-demand all over the place. Remove the (called from...) part.



kioslave/trash/trashimpl.cpp
<https://git.reviewboard.kde.org/r/120573/#comment47852>

    Is this check still needed? We know that every entry in m_trashDirectories ends with KDE.trash, now, right?
    
    Or is this "everything but the trash in the home dir"? then better test for that explicitely.
    
    endsWith sounds fragile to me, like the code doesn't really know what it should be doing, and could get fooled by unexpected naming..



kioslave/trash/trashimpl.cpp
<https://git.reviewboard.kde.org/r/120573/#comment47853>

    Looks like path is an optional value, not a modifyable parameter... then don't use a pointer, use an empty string as the default value.
    
    [...], const QString &path = QString() );
    in the header.



kioslave/trash/trashimpl.cpp
<https://git.reviewboard.kde.org/r/120573/#comment47851>

    Eek, a C cast. My eyes bleed. Anyhow you can remove completely, with my above suggestion.



kioslave/trash/trashimpl.cpp
<https://git.reviewboard.kde.org/r/120573/#comment47854>

    Why not QFileInfo(trashDir).isDir(), to use Qt rather than unportable code?


- David Faure


On Oct. 16, 2014, 10:35 p.m., René J.V. Bertin wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/120573/
> -----------------------------------------------------------
> 
> (Updated Oct. 16, 2014, 10:35 p.m.)
> 
> 
> Review request for KDE Software on Mac OS X, KDE Runtime and David Faure.
> 
> 
> Repository: kde-runtime
> 
> 
> Description
> -------
> 
> KDE on OS X does not handle the desktop session (no "Plasma") nor can it rely on XDG to obtain the proper paths to use for something like the trash. As a result, all applications that propose to move things they manage to the wastebin (Dolphin, but also digiKam) will store those items in a place that has no particular meaning on OS X, and that will thus tend to fill up.
> 
> OS X stores trash in one of several locations. Files trashed from the boot volume (and/or the volume containing $HOME, I don't actually know that) end up in `~/.Trash`. Files deleted from other volumes end up in `/Volumes/volName/.Trashes/uid`, where volName is the volume name (regardless whether it's an external or a remote drive; only mounted NFS shares are handled differently) and uid the numerical user id. Permissions on `.Trashes` are the same as those expected by KDE.
> 
> The kio_trash kioslave appears to support several actual trash directory locations, just like OS X. `TrashImpl::init()` creates a standard trash in `~/.local/share/Trash` (at least under OS X) but also `TrashImpl::trashForMountPoint()` that is used in cases I have not yet encountered.
> 
> On OS X, my modified `TrashImpl::init()` sets the standard trash directory to `~/.Trash/KDE.trash` and will create the `files` and `info` subdirectories as required, because they will of course be deleted when the user empties the OS X trash. `TrashImpl::fileRemoved()` has been modified to call a new function, `deleteEmptyTrashInfraStructure` to delete the KDE trash's internal infrastructure when the wastebin is empty so that OS X also sees the trash as emptied. (Since implementing `deleteEmptyTrashInfraStructure` this feature actually works, as expected as far as I can tell).
> 
> Remains to be done:
> - determine in what cases `trashForMountPoint()` is used, and finish the modifications for it to use `/.Trashes/uid/KDE.trash`
> 
> 
> Diffs
> -----
> 
>   kioslave/trash/kcmtrash.cpp f4811fd 
>   kioslave/trash/trashimpl.h bc68723 
>   kioslave/trash/trashimpl.cpp 30ee05b 
> 
> Diff: https://git.reviewboard.kde.org/r/120573/diff/
> 
> 
> Testing
> -------
> 
> On OS X 10.6.8 with kdelibs and kde-runtime git/4.14, using Dolphin. Tested actions are
> - move items to wastebin from $HOME and a directory on a different volume
> - restore items to both places
> - empty wastebin through Dolphin
> - empty OS X trashcan
> 
> 
> Thanks,
> 
> René J.V. Bertin
> 
>

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