Review Request 109344: When sorting by "Type", determine the mime types as early as possible to make sure that icons can be loaded synchronously

[Frank Reininghaus]

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Review request for Dolphin and Christoph Feck.


Description
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Christoph reported in https://git.reviewboard.kde.org/r/109180/ (in a comment after the commit) that Dolphin feels slower after the commit. In particular, that icons are loaded asynchronously.

I thought about this issue and can indeed reproduce the problem when sorting by "Type". The problem is that after the commit, the ItemData are created earlier, at a point when the mime types are not known yet. I propose to move the synchronous mime type determination to createItemDataList to fix that.


Diffs
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  dolphin/src/kitemviews/kfileitemmodel.h 1939671 
  dolphin/src/kitemviews/kfileitemmodel.cpp 688826e 

Diff: http://git.reviewboard.kde.org/r/109344/diff/


Testing
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Icons are loaded synchronously, and everything feels faster when sorting by "Type".


Thanks,

Frank Reininghaus

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