diff options
Diffstat (limited to 'src/declarative/qml/qmlcleanup.cpp')
-rw-r--r-- | src/declarative/qml/qmlcleanup.cpp | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/declarative/qml/qmlcleanup.cpp b/src/declarative/qml/qmlcleanup.cpp new file mode 100644 index 0000000..599e4e7 --- /dev/null +++ b/src/declarative/qml/qmlcleanup.cpp @@ -0,0 +1,85 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qmlcleanup_p.h" + +#include "qmlengine_p.h" + +/*! +\internal +\class QmlCleanup +\brief The QmlCleanup provides a callback when a QmlEngine is deleted. + +Any object that needs cleanup to occur before the QmlEngine's QScriptEngine is +destroyed should inherit from QmlCleanup. The clear() virtual method will be +called by QmlEngine just before it deletes the QScriptEngine. +*/ + +/*! +\internal + +Create a QmlCleanup for \a engine +*/ +QmlCleanup::QmlCleanup(QmlEngine *engine) +: prev(0), next(0) +{ + if (!engine) + return; + + QmlEnginePrivate *p = QmlEnginePrivate::get(engine); + + if (p->cleanup) next = p->cleanup; + p->cleanup = this; + prev = &p->cleanup; + if (next) next->prev = &next; +} + +/*! +\internal +*/ +QmlCleanup::~QmlCleanup() +{ + if (prev) *prev = next; + if (next) next->prev = prev; + prev = 0; + next = 0; +} + |