QFileSystemWatcher causes sandboxing errors since its backend uses
POSIX API in a relatively liberal way.
Also, Cocoa already acts as a file system watcher, and calls
-[QNSOpenSavePanelDelegate panel:shouldShowFilename:] on each
file. From a logical point of view, caching the directory content
can be replaced by testing the current file against the filter
setting. We expect Cocoa to cache results, and by using NSFileManager
things should remain relatively fast.
Task-number: QTBUG-34107
Change-Id: Ia872b9b1244f7b390d173a498011379b9309b3c6
Reviewed-by: Cyril Oblikov <munknex@gmail.com>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
c934ea341e