|Summary:||remaining space on harddrive should be updated in both views in split view after deleting file(s)|
|Component:||split view||Assignee:||Dolphin Bug Assignee <dolphin-bugs-null>|
|Latest Commit:||http://commits.kde.org/kde-baseapps/de197075a70905701f18b04d3249fd684de7f79d||Version Fixed In:||4.14.0|
Description m.wege 2013-11-16 23:03:18 UTC
Comment 1 Christoph Feck 2013-11-16 23:51:09 UTC
Fixing the split view should be doable, but for other instances, it is different. I am not sure the kernel allows to notify applications when disk usage changes. They probably have to poll, which is bad for battery usage.
Comment 2 Frank Reininghaus 2013-11-18 15:49:10 UTC
Thanks for the bug report. In http://quickgit.kde.org/?p=kde-baseapps.git&a=commit&h=22137ba3d2ab54a63471e599e66155a8120b86c7 the polling (which is done every 10 seconds) was restricted to visible windows to prevent wasting energy - hiding a window stops the polling. The problem is that showing the window again does not re-start the polling, because StatusBarSpaceInfo::showEvent(QShowEvent* event) only does that if the QShowEvent is not spontaneous. I think that the problem can also be reproduced when splitting the view because the status bar is temporarily hidden and then re-shown while splitting, which might be considered a "spontaneous" event. So the fix would probably be to remove the "if (!event->spontaneous())" check, unless it has a purpose that I have overlooked so far. One possible downside would be that this might increase Dolphin's energy consumption in some situations - the polling timers of both split views will fire at different times, which will wake up the CPU and other parts of the system twice as often as now.
Comment 3 Frank Reininghaus 2014-05-22 16:46:37 UTC
Git commit de197075a70905701f18b04d3249fd684de7f79d by Frank Reininghaus. Committed on 22/05/2014 at 16:42. Pushed by freininghaus into branch 'master'. Keep the "free space" information updated in all visible views The old code would watch the free space on a mount point, i.e., determine the free space again, in 10-second intervals, only until the view became invisible once (even if it was invisible only for a very short moment, i.e., while splitting the view). This commit ensures that the mount point is watched again as soon as the corresponding view becomes visible again. Moreover, the object that watches the free space for a mount point is shared among all views that show URLs that belong to this mount point. To achieve this, there is a central cache which can be used to obtain an existing MountPointObserver for a certain path. If necessary, a new MountPointObserver is created and added to the cache. The MountPointObserver is removed from the cache and destroyed only if no views use it any more, and no new users appear until the next update (which happens every 10 seconds). This prevents that the free space is measured repeatedly when changing the current directory on the same mount point. Many thanks to Emmanuel Pescosta for the initial ideas to factor out the "free space" code and to establish a central storage for the "observer" objects, and for providing many good suggestions how to improve the code! REVIEW: 118208 FIXED-IN: 4.14.0 M +3 -0 dolphin/src/CMakeLists.txt C +26 -43 dolphin/src/statusbar/mountpointobserver.cpp [from: dolphin/src/statusbar/statusbarspaceinfo.h - 057% similarity] A +109 -0 dolphin/src/statusbar/mountpointobserver.h [License: GPL (v2+)] A +99 -0 dolphin/src/statusbar/mountpointobservercache.cpp [License: GPL (v2+)] C +23 -30 dolphin/src/statusbar/mountpointobservercache.h [from: dolphin/src/statusbar/statusbarspaceinfo.h - 060% similarity] A +89 -0 dolphin/src/statusbar/spaceinfoobserver.cpp [License: GPL (v2+)] C +16 -30 dolphin/src/statusbar/spaceinfoobserver.h [from: dolphin/src/statusbar/statusbarspaceinfo.h - 061% similarity] M +19 -38 dolphin/src/statusbar/statusbarspaceinfo.cpp M +4 -6 dolphin/src/statusbar/statusbarspaceinfo.h http://commits.kde.org/kde-baseapps/de197075a70905701f18b04d3249fd684de7f79d