Fixed performance issues related to selections and deleting of files:

- Don't connect to KDirLister::itemDeleted(const KFileItem&), but KDirLister::itemsDeleted(const KFileItemList&). Otherwise Dolphin is informed about each single file deletion instead of getting the deleted items as a list. Thanks to David Faure for the hint!

- DolphinViewContainer::updateStatusBar() can be expensive when a lot of files are selected, as the file size must get retrieved. Assure that fast calls for updateStatusBar() don't trigger a synchronous update, do the update after 300 ms where no further update has been triggered.

- Dolphin provides a list of file items when emitting the selectionChanged() signal. Collecting the file items is a quite expensive operation, so use the same approach as when updating the statusbar: only emit the selection changed signal when no change has been done within 300 ms. This improves the performance when doing huge selections a lot.

- Make updateStatusBar() a private method, the main window should not need to take care about updating the statusbar (this is done internally now by DolphinViewContainer).

BUG: 199090
BUG: 195787
CCBUG: 199352
CCBUG: 188218

svn path=/trunk/KDE/kdebase/apps/; revision=995015

1 files changed, 0 insertions, 2 deletions

diff --git a/src/dolphinmainwindow.cpp b/src/dolphinmainwindow.cpp
index 8796e6b0f..a95b5a0d2 100644
--- a/src/dolphinmainwindow.cpp
+++ b/src/dolphinmainwindow.cpp
@@ -274,8 +274,6 @@ void DolphinMainWindow::slotSelectionChanged(const KFileItemList& selection)
         compareFilesAction->setEnabled(false);
     }
 
-    m_activeViewContainer->updateStatusBar();
-
     emit selectionChanged(selection);
 }