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92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
/****************************************************************************
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** Copyright (C) 2001-2012 Klaralvdalens Datakonsult AB. All rights reserved.
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**
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** This file is part of the KD Tools library.
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**
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** Licensees holding valid commercial KD Tools licenses may use this file in
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** accordance with the KD Tools Commercial License Agreement provided with
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** the Software.
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**
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**
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** This file may be distributed and/or modified under the terms of the GNU
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** Lesser General Public License version 2 and version 3 as published by the
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** Free Software Foundation and appearing in the file LICENSE.LGPL included.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** Contact info@kdab.net if any conditions of this licensing are not
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** clear to you.
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**
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**********************************************************************/
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#include "kdsignalblocker.h"
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#include <QObject>
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using namespace Akonadi;
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/*!
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\class KDSignalBlocker
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\ingroup raii core
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\brief Exception-safe and convenient wrapper around QObject::blockSignals()
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All methods in this class are nothrow if QObject::blockSignals() and
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QObject::signalsBlocked() are nothrow, which they normally are.
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*/
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/*!
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Constructor. Blocks signals on \a o.
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\post o->signalsBlocked() == true
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*/
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KDSignalBlocker::KDSignalBlocker(QObject *o)
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: wasBlocked(o->signalsBlocked())
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, object(o)
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{
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o->blockSignals(true);
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}
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/*!
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\overload
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\post o.signalsBlocked() == true
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*/
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KDSignalBlocker::KDSignalBlocker(QObject &o)
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: wasBlocked(o.signalsBlocked())
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, object(&o)
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{
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o.blockSignals(true);
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}
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/*!
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Destructor. Unblocks signals (unless they were blocked before), if not already
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done by unblock().
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\post o->signalsBlocked() is the same as just before this instance has been constructed.
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*/
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KDSignalBlocker::~KDSignalBlocker()
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{
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unblock();
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}
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/*
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Unblocks signals (unless they were blocked before).
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You can use reblock() to block them again.
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There is no need to reblock before destruction.
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\post o->signalsBlocked() is the same as just before this instance has been constructed.
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*/
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void KDSignalBlocker::unblock()
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{
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object->blockSignals(wasBlocked);
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}
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/*
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Unblocks signals (unless they were blocked before)
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\post o->signalsBlocked() is the same as just before this instance has been constructed.
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*/
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void KDSignalBlocker::reblock()
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{
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object->blockSignals(true);
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}
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