From kde-commits  Sun Apr 07 18:18:54 2002
From: Martijn Klingens <mklingens () yahoo ! com>
Date: Sun, 07 Apr 2002 18:18:54 +0000
To: kde-commits
Subject: kdenonbeta/kopete/kopete/library
X-MARC-Message: https://marc.info/?l=kde-commits&m=101820369814672


kdenonbeta/kopete/kopete/library improtocol.cpp,1.13,1.14 improtocol.h,1.20,1.21 kopete.cpp,1.46,1.47 kopete.h,1.34,1.35
Author: mklingens
Sun Apr  7 20:18:53 CEST 2002
In directory office:/tmp/cvs-serv11813/kopete/library


Modified Files:
         improtocol.cpp improtocol.h kopete.cpp kopete.h
Log Message:
Much better fix for mETz's evil hack. Instead of deleting the plugin
loader in QueryExit we delete it again in the kopete dtor.

The Kopete ctor connects to the destoryed() signal of the mainwindow and
makes m_mainWindow a null pointer after that. As a result
kopeteApp->statusBar() and friends can now reliably detect deletion and also
return 0L after that, which in turn can be queried by any code that might
be run after deleting the main window. In case there are checks missing the
backtrace also makes it immediately clear that you're operating on a null
pointer instead of a dangling pointer (harder to see).

Thanks to valgrind for pointing out the place where this crash was caused :)

BTW: This is still not the perfect fix, since the perfect fix would be to
turn about the whole Kopete API upside down. The plugins shouldn't access
widgets of the main window or handle events from it in the first place.
Communication between the app and the plugin should be _much_ more abstract
and more signal-based.
This requires quite some work to do, though, and I definitely don't expect
to get that done anytime soon. In the mean time this is at least a decent
fix that no longer qualifies as an extremely ugly hack.