Bug 303162

IconTasks uses KDE libtaskmanager to match a window to a launcher. So the issue really lives there...

taskmanager uses the windows 'WM_CLASS' attribute to match it to a launcher. To find out a windows 'CLASS' attributes, type the following in a konsole window. The cursor will change to a cross ( + ) - move this over the app window, and press the left button.

xprop | grep WM_CLASS

For the dolphin file manager, this will return WM_CLASS(STRING) = "dolphin", "Dolphin"  - taskmanager then uses this to link to a .desktop file.

Looks like you have two dolphins, so how is IconTasks to know which is which? If your other dolphin (the emulator) produces different values for WM_CLASS above, what you can do is go to IconTasks's 'Launcher Matching Rules' section. Click 'Add', then 'Detect Window Properties - and click on an emulator window. Then in the 'Launcher' field, type (or find via the file selector) the location of the emulator's .desktop file.

I can confirm this behavior. I made launchers for both programs in IconTasks. Here are two pics to show the problem:

When Dophin and Dolphin-emu are both open (Dolphin is open but minimized), everything is OK:
http://tinypic.com/view.php?pic=34s0aip&s=6

When one program is open (Dolphin-emu in this case), the other's launcher is hidden:
http://tinypic.com/view.php?pic=s470pi&s=6

The pics even demonstrate that IconTasks know they have different Window Classes and different Window Names.

I've just installed Dolphin 3.0-713 from https://launchpad.net/~glennric/+archive/dolphin-emu

I cant reproduce this behaviour!

I notice you have custom launcher matching rules. Perhaps this is where the error is? Could you try removing both of these, restarting plasma, and the just use the 'Show a launcher when not running' context menu to create the launcher. This is whay I did, and it seems to be fine.

I forgot to say that I'm running Chakra Linux and KDE SC 4.8.3. Would IconTasks from git build with this release of KDE? Could you point me to the git tree?
Here is a screencast (6.6 mb) I made to demonstrate the problem (I deleted the launcher rules and used kquitapp plasma-desktop and kstart plasma-desktop before recording):
https://www.dropbox.com/s/c1c18d85hcc6o6f/out.ogv?m

Very. Odd. IS dolphin-emu installed system-wide? If you notice in your video, when yu start dolphin (file manager) the spinnig icon is over the dolphon-emu.

Can you paste the [Launchers] section from ~/.kde/share/config/plasma-desktop-appletsrc

its the section that looks something like:

[Containments][4][Applets][109][Configuration][Launchers]
Items=file:///usr/share/applications/thunderbird.desktop?wmClass=Thunderbird,file:///usr/share/applications/firefox.desktop,file:///usr/local/share/applications/kde4/cantata.desktop?wmClass=Cantata,file:///usr/share/applications/kde4/konsole.desktop,file:///usr/share/applications/kde4/digikam.desktop,file:///usr/share/applications/kde4/systemsettings.desktop,file:///usr/share/applications/kde4/dolphin.desktop?wmClass=Dolphin,file:///usr/share/applications/dolphin-emu.desktop?wmClass=Dolphin-emu
Locked=false


----------

As you can see from mine above - both dolphin and dolphin-emu are recognised.

Here it is:
[Containments][3][Applets][54][Configuration][Launchers]
Items=file:///usr/share/applications/firefox.desktop?wmClass=Firefox,file:///usr/share/applications/kde4/rekonq.desktop?wmClass=Rekonq,file:///usr/share/applications/kde4/bangarang.desktop,file:///usr/share/applications/kde4/kate.desktop,file:///usr/share/applications/kde4/words.desktop,file:///usr/share/applications/kde4/sheets.desktop,file:///usr/share/applications/kde4/akregator.desktop?wmClass=Akregator,file:///usr/share/applications/dolphin-emu.desktop?wmClass=Dolphin-emu,file:///usr/share/applications/kde4/dolphin.desktop?wmClass=Dolphin

This is very interesting. Everything looks ok. Does it also happen in plasmoidviewer? e.g. run

    plasmoidviewer icontasks

This allows you to run just icontasks. Does it happen if dolphin-emu is *before* dolphin in the list of launchers?

Yes, the same thing happens in plasmoidviewer. 

Also, dolphin-emu is installed systemwide. The binary is /usr/bin/dolphin-emu

Does IconTasks have a problem with the hyphen?

Can you try using the standard taskbar in plasmoidviewer? You can create launchers in there. If this also has the problem, then it lies in libtaskmanager.

The problem does exist in the standard taskmanager. Should I file a new bug report against libtaskmanager? Since my distro does not have a 4.8.4 release would you like me try their 4.8.7 packages?

Sorry by late answer

By running xprop | grep WM_CLASS, for dolphin the file manager I get:

WM_CLASS(STRING) = "dolphin", "Dolphin"

for dolphin the emulator I get:

WM_CLASS(STRING) = "dolphin-emu", "Dolphin-emu"

By adding an exception rule for dolphin the emulator, the trouble is not solved. I have attached an image related to it.

I don't have the folder /.kde/share/config/, in share folder just I see another one called applnk and inside of it I have these files: regnum-program.desktop  regnum-uninstall.desktop  regnum-url.desktop

I have the same trouble running "plasmoidviewer icontasks" and adding first a dolphin-emu launcher and after a dolphin launcher.

Created attachment 72529 [details]
Launcher matching rules for dolphin emulator

Just to let you know that I have not forgotten about this bug. However, I will be on holiday for the next two weeks - so this probably won't get fixed for 4.9

As I can't reproduce this bug here, would it be OK if I created a standalone icon-tasks install (and libtaskmanager) with LOTS of debug enabled? I can then send this to you, so that I can try and see where the error lies?

Sure, no problem. By the way, what does mean LTOS?

Thank you for your concern.

LTOS??? I said "with LOTS of debug " i.e  "with lots of debug" (emphasizing the lots)

Git commit 44900b77e18ac59fdd9687b957330765cd748db9 by Craig Drummond.
Committed on 27/08/2012 at 20:59.
Pushed by craig into branch 'KDE/4.8'.

Don't associate an app to a launcher if both have valid but different launcher URLs.

M  +9    -5    libs/taskmanager/launcheritem.cpp

http://commits.kde.org/kde-workspace/44900b77e18ac59fdd9687b957330765cd748db9

Git commit c493055a052d72ab7f8a90940346712b559a5049 by Craig Drummond.
Committed on 27/08/2012 at 21:30.
Pushed by craig into branch 'KDE/4.9'.

Don't associate an app to a launcher if both have valid but different launcher URLs.

M  +9    -5    libs/taskmanager/launcheritem.cpp

http://commits.kde.org/kde-workspace/c493055a052d72ab7f8a90940346712b559a5049

Git commit 50fded0b644c21b0dea8746e23643dbac23d3143 by Craig Drummond.
Committed on 27/08/2012 at 21:33.
Pushed by craig into branch 'master'.

Don't associate an app to a launcher if both have valid but different launcher URLs.

M  +9    -5    libs/taskmanager/launcheritem.cpp

http://commits.kde.org/kde-workspace/50fded0b644c21b0dea8746e23643dbac23d3143

(In reply to Gatoso from comment #0)
> Dolphin emulator is an open source emulator for gamecube and wii games, its
> web site is: http://dolphin-emulator.com

That is not the official Dolphin website. The official site is: https://dolphin-emu.org/