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KDE 4.3. One main reason is that a lot of things are done now asynchronously with timers to prevent a blocking UI and unnecessary expensive operations.
To keep the Information Panel maintainable and prepared for future features a cleanup has been done. The whole user interface handling has been moved into the class InformationPanelContent that offers a straight forward interface: showItem(const KFileItem& item) and showItems(const KFileItemList& items).
The class InformationPanel is responsible for calling those methods in a way that hovering items, changing directories, doing selections, rename and delete operations, ... don't result in calling showItem() 10 times per second.
This cleanup won't be backported to KDE 4.3.x
svn path=/trunk/KDE/kdebase/apps/; revision=991902
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