Hi all, I have sent this mail to kfm-devel some time ago, but have not received any reply so far. Therefore I try on frameworks-devel as it affects frameworks.
The class KJavaAppletWidget is using the method KWindowSystem::doNotManage() to tell KWin (via DBus) to not manage the applet window. The method in question is used only by KStart and by the java applet and to be honest: I would like to get rid off it in Frameworks 5. Through lots of git magic I was able to find the commit which added the functionality: kdelibs, 0838ff87 on 15th of July, 2000 by Matthias Ettrich with the very explaining commit message "do not manage magic". It doesn't help me to understand why it is needed :-) The KWin part clearly states that it is a HACK only for Java applets. >From my understanding the method is wrong in general for the following reasons: * works only with KWin * uses D-Bus instead of X11 * if a window should not be managed by the window manager it should use the override redirect hint * matching windows by title is broken by design * adds a hack to a window manager to work around a Client (not good) For me the important question is, whether this is still needed. And that is what I cannot test, as: * I don't know of any web page still using Java Applets * I have uninstalled Java after one of the recent security nightmares * I don't want to install Java again due to the security issues If anyone could enlighten me, I would be very happy :-) If this functionality is no longer required, I would prepare a commit for frameworks 5 to remove it from KDE Frameworks 5 and mark the methods in KWin for removal. For KDE 4 life time we will keep the interface there, though I honestly don't know whether it's still functional ;-) If it is still required, I would like to discuss what could be done to not need it. Apparently other window managers don't provide the KWin D-Bus interface and apparently other browser engines don't need to tell KWin about it. So there must be solutions which would not need this method. Unrelated side-note: the code in KJavaAppletWidget is partially disabled in the frameworks branch. Best Regards Martin Gräßlin
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