[Digikam-devel] [Bug 284136] New: After moving images the old thumbnails remain there.

[pochini at shiny.it]

https://bugs.kde.org/show_bug.cgi?id=284136

           Summary: After moving images the old thumbnails remain there.
           Product: digikam
           Version: 2.2.0
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Albums GUI
        AssignedTo: digikam-devel at kde.org
        ReportedBy: pochini at shiny.it


Version:           2.2.0 (using KDE 4.6.5) 
OS:                Linux

This bug was not present in 2.1.1. When I move one image it is actually moved
to the destination folder or trash, but sometimes its thumbnail also remains in
the old place. Since the old thumbnail hasn't the associated image anymore it
cannot be moved or deleted again. F5 does not help. This happens more often
when many images are moved at once.

Reproducible: Sometimes

Steps to Reproduce:
Select some pics and hit DEL.

Actual Results:  
Pics are moved to trash, but their thumbs stay.

Expected Results:  
The thumbs should go too.

Since the bug is not reliably reproduceable, I thought is was caused by some
sort of race condition. I also guessed it had to do with the notify mechanism.
Digging into the diff from 2.1.1 I noticed this change:

-----
2011-09-17  Marcel Wiesweg <marcel.wiesweg at gmx.de>
    [...]Instead of imageInfosDeleted, use an interval based notify
    method which has no overhead (imageInfosDeleted can be slow
    because the list needs to be built)
-----

So I tried to revert all the changes in:

core/libs/models/imagemodel.cpp
core/libs/models/imagemodel.h
core/libs/models/imagethumbnailmodel.cpp
core/libs/models/imagethumbnailmodel.h

and the problem doesn't show up anymore.

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