diff options
Diffstat (limited to 'src/corelib/kernel/qobject.h')
-rw-r--r-- | src/corelib/kernel/qobject.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/corelib/kernel/qobject.h b/src/corelib/kernel/qobject.h index e2000afc82..f9239bf575 100644 --- a/src/corelib/kernel/qobject.h +++ b/src/corelib/kernel/qobject.h @@ -549,6 +549,52 @@ template <class T> inline const char * qobject_interface_iid() Q_CORE_EXPORT QDebug operator<<(QDebug, const QObject *); #endif +class Q_CORE_EXPORT QSignalBlocker +{ +public: + inline explicit QSignalBlocker(QObject *o); + inline explicit QSignalBlocker(QObject &o); + inline ~QSignalBlocker(); + + inline void reblock(); + inline void unblock(); +private: + Q_DISABLE_COPY(QSignalBlocker) + QObject * const m_o; + bool m_blocked; + bool m_inhibited; +}; + +QSignalBlocker::QSignalBlocker(QObject *o) + : m_o(o), + m_blocked(o && o->blockSignals(true)), + m_inhibited(false) +{} + +QSignalBlocker::QSignalBlocker(QObject &o) + : m_o(&o), + m_blocked(o.blockSignals(true)), + m_inhibited(false) +{} + +QSignalBlocker::~QSignalBlocker() +{ + if (m_o && !m_inhibited) + m_o->blockSignals(m_blocked); +} + +void QSignalBlocker::reblock() +{ + if (m_o) m_o->blockSignals(true); + m_inhibited = false; +} + +void QSignalBlocker::unblock() +{ + if (m_o) m_o->blockSignals(m_blocked); + m_inhibited = true; +} + namespace QtPrivate { inline QObject & deref_for_methodcall(QObject &o) { return o; } inline QObject & deref_for_methodcall(QObject *o) { return *o; } |