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refs #759 Allow cache value notification slot to be changed after construction.

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Also allow slot to be any type of callable, including member function or lambda.
This commit is contained in:
Mathew Sutcliffe
2016-09-09 00:49:08 +01:00
committed by Roland Winklmeier
parent d24c17eba2
commit e01ae2be11
6 changed files with 71 additions and 52 deletions
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16
src/blackmisc/settingscache.h
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@@ -69,18 +69,22 @@ namespace BlackMisc
class CSetting : public BlackMisc::CCached<typename Trait::type>
{
public:
//! \copydoc BlackMisc::CCached::NotifySlot
//! Constructor.
//! \param owner Will be the parent of the internal QObject used to access the value.
template <typename T>
using NotifySlot = typename BlackMisc::CCached<typename Trait::type>::template NotifySlot<T>;
CSetting(T *owner) :
CSetting::CCached(CSettingsCache::instance(), Trait::key(), Trait::humanReadable(), Trait::isValid, Trait::defaultValue(), owner)
{}
//! Constructor.
//! \param owner Will be the parent of the internal QObject used to access the value.
//! \param slot Slot to call when the value is modified by another object.
//! Must be a void, non-const member function of the owner.
template <typename T>
CSetting(T *owner, NotifySlot<T> slot = nullptr) :
CSetting::CCached(CSettingsCache::instance(), Trait::key(), Trait::humanReadable(), Trait::isValid, Trait::defaultValue(), owner, slot)
{}
template <typename T, typename F>
CSetting(T *owner, F slot) : CSetting(owner)
{
this->setNotifySlot(slot);
}
//! Reset the setting to its default value.
CStatusMessage setDefault() { return this->set(Trait::defaultValue()); }