diff options
Diffstat (limited to 'tqtinterface/qt4/src/kernel/tqobjectcleanuphandler.cpp')
| -rw-r--r-- | tqtinterface/qt4/src/kernel/tqobjectcleanuphandler.cpp | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/tqtinterface/qt4/src/kernel/tqobjectcleanuphandler.cpp b/tqtinterface/qt4/src/kernel/tqobjectcleanuphandler.cpp deleted file mode 100644 index f9a5937..0000000 --- a/tqtinterface/qt4/src/kernel/tqobjectcleanuphandler.cpp +++ /dev/null @@ -1,172 +0,0 @@ -/**************************************************************************** -** -** Implementation of TQObjectCleanupHandler class -** -** Copyright (C) 2000-2008 Trolltech ASA. All rights reserved. -** -** This file is part of the kernel module of the TQt GUI Toolkit. -** -** This file may be used under the terms of the GNU General -** Public License versions 2.0 or 3.0 as published by the Free -** Software Foundation and appearing in the files LICENSE.GPL2 -** and LICENSE.GPL3 included in the packaging of this file. -** Alternatively you may (at your option) use any later version -** of the GNU General Public License if such license has been -** publicly approved by Trolltech ASA (or its successors, if any) -** and the KDE Free TQt Foundation. -** -** Please review the following information to ensure GNU General -** Public Licensing requirements will be met: -** http://trolltech.com/products/qt/licenses/licensing/opensource/. -** If you are unsure which license is appropriate for your use, please -** review the following information: -** http://trolltech.com/products/qt/licenses/licensing/licensingoverview -** or contact the sales department at [email protected]. -** -** This file may be used under the terms of the Q Public License as -** defined by Trolltech ASA and appearing in the file LICENSE.TQPL -** included in the packaging of this file. Licensees holding valid TQt -** Commercial licenses may use this file in accordance with the TQt -** Commercial License Agreement provided with the Software. -** -** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, -** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted -** herein. -** -**********************************************************************/ - -#include "tqobjectcleanuphandler.h" -#include "tqobjectlist.h" - -/*! - \class TQObjectCleanupHandler tqobjectcleanuphandler.h - \brief The TQObjectCleanupHandler class watches the lifetime of multiple TQObjects. - - \ingroup objectmodel - - A TQObjectCleanupHandler is useful whenever you need to know when a - number of \l{TQObject}s that are owned by someone else have been - deleted. This is important, for example, when referencing memory - in an application that has been allocated in a shared library. - - Example: - - \code - class FactoryComponent : public FactoryInterface, public TQLibraryInterface - { - public: - ... - - TQObject *createObject(); - - bool init(); - void cleanup(); - bool canUnload() const; - - private: - TQObjectCleanupHandler objects; - }; - - // allocate a new object, and add it to the cleanup handler - TQObject *FactoryComponent::createObject() - { - return objects.add( new TQObject() ); - } - - // TQLibraryInterface implementation - bool FactoryComponent::init() - { - return TRUE; - } - - void FactoryComponent::cleanup() - { - } - - // it is only safe to unload the library when all TQObject's have been destroyed - bool FactoryComponent::canUnload() const - { - return objects.isEmpty(); - } - \endcode -*/ - -/*! - Constructs an empty TQObjectCleanupHandler. -*/ -TQObjectCleanupHandler::TQObjectCleanupHandler() -: TQObject(), cleanupObjects( 0 ) -{ -} - -/*! - Destroys the cleanup handler. All objects in this cleanup handler - will be deleted. -*/ -TQObjectCleanupHandler::~TQObjectCleanupHandler() -{ - clear(); -} - -/*! - Adds \a object to this cleanup handler and returns the pointer to - the object. -*/ -TQObject* TQObjectCleanupHandler::add( TQObject* object ) -{ - if ( !object ) - return 0; - - if ( !cleanupObjects ) { - cleanupObjects = new TQObjectList; - cleanupObjects->setAutoDelete( TRUE ); - } - connect( object, TQT_SIGNAL(destroyed(TQObject*)), this, TQT_SLOT(objectDestroyed(TQObject*)) ); - cleanupObjects->insert( 0, object ); - return object; -} - -/*! - Removes the \a object from this cleanup handler. The object will - not be destroyed. -*/ -void TQObjectCleanupHandler::remove( TQObject *object ) -{ - if ( !cleanupObjects ) - return; - if ( cleanupObjects->findRef( object ) >= 0 ) { - (void) cleanupObjects->take(); - disconnect( object, TQT_SIGNAL(destroyed(TQObject*)), this, TQT_SLOT(objectDestroyed(TQObject*)) ); - } -} - -/*! - Returns TRUE if this cleanup handler is empty or if all objects in - this cleanup handler have been destroyed; otherwise return FALSE. -*/ -bool TQObjectCleanupHandler::isEmpty() const -{ - return cleanupObjects ? cleanupObjects->isEmpty() : TRUE; -} - -/*! - Deletes all objects in this cleanup handler. The cleanup handler - becomes empty. -*/ -void TQObjectCleanupHandler::clear() -{ - delete cleanupObjects; - cleanupObjects = 0; -} - -void TQObjectCleanupHandler::objectDestroyed( TQObject*object ) -{ - if ( cleanupObjects ) - cleanupObjects->setAutoDelete( FALSE ); - - remove( object ); - - if ( cleanupObjects ) - cleanupObjects->setAutoDelete( TRUE ); -} |