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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
/****************************************************************************
**
** Copyright (c) 2007-2008, Apple, Inc.
**
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
**
** * Redistributions of source code must retain the above copyright notice,
** this list of conditions and the following disclaimer.
**
** * Redistributions in binary form must reproduce the above copyright notice,
** this list of conditions and the following disclaimer in the documentation
** and/or other materials provided with the distribution.
**
** * Neither the name of Apple, Inc. nor the names of its contributors
** may be used to endorse or promote products derived from this software
** without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
** PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
** LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
** NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
****************************************************************************/
#include <private/qcocoaintrospection_p.h>
QT_BEGIN_NAMESPACE
void qt_cocoa_change_implementation(Class baseClass, SEL originalSel, Class proxyClass, SEL replacementSel, SEL backupSel)
{
#ifndef QT_MAC_USE_COCOA
if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5)
#endif
{
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
// The following code replaces the _implementation_ for the selector we want to hack
// (originalSel) with the implementation found in proxyClass. Then it creates
// a new 'backup' method inside baseClass containing the old, original,
// implementation (fakeSel). You can let the proxy implementation of originalSel
// call fakeSel if needed (similar approach to calling a super class implementation).
// fakeSel must also be implemented in proxyClass, as the signature is used
// as template for the method one we add into baseClass.
// NB: You will typically never create any instances of proxyClass; we use it
// only for stealing its contents and put it into baseClass.
if (!replacementSel)
replacementSel = originalSel;
Method originalMethod = class_getInstanceMethod(baseClass, originalSel);
Method replacementMethod = class_getInstanceMethod(proxyClass, replacementSel);
IMP originalImp = method_setImplementation(originalMethod, method_getImplementation(replacementMethod));
if (backupSel) {
Method backupMethod = class_getInstanceMethod(proxyClass, backupSel);
class_addMethod(baseClass, backupSel, originalImp, method_getTypeEncoding(backupMethod));
}
#endif
}
}
void qt_cocoa_change_back_implementation(Class baseClass, SEL originalSel, SEL backupSel)
{
#ifndef QT_MAC_USE_COCOA
if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5)
#endif
{
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
Method originalMethod = class_getInstanceMethod(baseClass, originalSel);
Method backupMethodInBaseClass = class_getInstanceMethod(baseClass, backupSel);
method_setImplementation(originalMethod, method_getImplementation(backupMethodInBaseClass));
#endif
}
}
QT_END_NAMESPACE
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