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Basic implementation of QSignalBlocker for qt4

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(cherry picked from commit bc8eb059db)
This commit is contained in:
Guillaume Munch 2016-07-29 21:18:43 +01:00
parent 49ce94f636
commit 2da2f6c00c
1 changed files with 18 additions and 0 deletions
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18
src/frontends/qt4/qt_helpers.h
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@ -195,6 +195,24 @@ QString changeExtension(QString const & oldname, QString const & ext);
/// parameter.
QString guiName(std::string const & type, BufferParams const & bp);
#if QT_VERSION < 0x050300
// Very partial implementation of QSignalBlocker for archaic qt versions.
class QSignalBlocker {
public:
explicit QSignalBlocker(QObject * o)
: obj(o), init_state(obj && obj->blockSignals(true)) {}
~QSignalBlocker() {
if (obj)
obj->blockSignals(init_state);
}
private:
QObject * obj;
bool init_state;
};
#endif
} // namespace lyx
#endif // QTHELPERS_H