66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
/* === This file is part of Calamares - <https://github.com/calamares> ===
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*
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* SPDX-FileCopyrightText: 2020 Adriaan de Groot <groot@kde.org>
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*
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* Calamares is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Calamares is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Calamares. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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* License-Filename: LICENSE
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*
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*/
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#ifndef UTILS_RAII_H
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#define UTILS_RAII_H
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#include <QObject>
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#include <QSignalBlocker>
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#include <type_traits>
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/// @brief Convenience to zero out and deleteLater of any QObject-derived-class
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template < typename T >
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struct cqDeleter
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{
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T*& p;
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~cqDeleter()
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{
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static_assert( std::is_base_of< QObject, T >::value, "Not a QObject-class" );
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if ( p )
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{
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p->deleteLater();
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}
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p = nullptr;
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}
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};
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/// @brief Sets a bool to @p value and resets to !value on destruction
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template < bool value >
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struct cBoolSetter
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{
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bool& m_b;
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cBoolSetter( bool& b )
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: m_b( b )
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{
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m_b = value;
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}
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~cBoolSetter() { m_b = !value; }
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};
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/// @brief Blocks signals on a QObject until destruction
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using cSignalBlocker = QSignalBlocker;
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#endif
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