Signal< Tsender, Args > Class Template Reference

The Signal class is used to emit signals on non-QObject derived classes. More...

#include <signalslot.h>

Inheritance diagram for Signal< Tsender, Args >:

Collaboration diagram for Signal< Tsender, Args >:

Public Member Functions
	Signal ()=delete
	Signal (const Signal &other)=delete
	Signal (const Tsender &sender) noexcept
	Constructor.
	~Signal () noexcept
	Destructor.
int	getSlotCount () const noexcept
	Get the count of registered slots.
void	attach (Slot< Tsender, Args... > &slot) const noexcept
	Attach a slot.
void	detach (Slot< Tsender, Args... > &slot) const noexcept
	Detach a slot.
void	notify (Args... args) noexcept
	Notify all attached slots.
Signal &	operator= (Signal const &other)=delete

Private Attributes
const Tsender &	mSender
	Reference to the sender object.
QSet< Slot< Tsender, Args... > * >	mSlots
	All attached slots.

Friends
class	Slot< Tsender, Args... >

Detailed Description

template<typename Tsender, typename... Args>
class librepcb::Signal< Tsender, Args >

The Signal class is used to emit signals on non-QObject derived classes.

The classes librepcb::Signal and librepcb::Slot are similar to Qt's signal/slot concept. The main difference is that senders and receivers of signals do not need to be derived from QObject, thus our own signal/slot mechanism is better suited for low-level classes.

This gives the advantage of avoiding QObject overhead, but has several drawbacks:

• No thread-safety
• Always synchronous, no queued connections are possible
• No endless loop detection

See also

librepcb::Slot

Template Parameters

Tsender	Type of the sender object
Args	Arguments passed from librepcb::Signal::notify() to the callbacks

Constructor & Destructor Documentation

Signal() [1/3]

template<typename Tsender , typename... Args>

Signal ( )

delete

Signal() [2/3]

template<typename Tsender , typename... Args>

Signal ( const Signal< Tsender, Args > &  other )

delete

Signal() [3/3]

template<typename Tsender , typename... Args>

Signal ( const Tsender &  sender )

inlineexplicitnoexcept

Constructor.

Parameters

sender

Reference to the sender object of the signal

~Signal()

template<typename Tsender , typename... Args>

~Signal ( )

inlinenoexcept

Destructor.

Automatically disconnects from all slots.

Member Function Documentation

getSlotCount()

template<typename Tsender , typename... Args>

int getSlotCount ( ) const

inlinenoexcept

Get the count of registered slots.

Returns

Count of registered slots

attach()

template<typename Tsender , typename... Args>

void attach ( Slot< Tsender, Args... > &  slot ) const

inlinenoexcept

Attach a slot.

Parameters

slot	Reference to the slot to attach

detach()

template<typename Tsender , typename... Args>

void detach ( Slot< Tsender, Args... > &  slot ) const

inlinenoexcept

Detach a slot.

Parameters

slot	Reference to the slot to detach

notify()

template<typename Tsender , typename... Args>

void notify ( Args...  args )

inlinenoexcept

Notify all attached slots.

Parameters

args	Arguments passed to the slots

operator=()

template<typename Tsender , typename... Args>

Signal & operator= ( Signal< Tsender, Args > const &  other )

delete

Friends And Related Symbol Documentation

Slot< Tsender, Args... >

template<typename Tsender , typename... Args>

friend class Slot< Tsender, Args... >

friend

Member Data Documentation

mSender

template<typename Tsender , typename... Args>

const Tsender& mSender

private

Reference to the sender object.

mSlots

template<typename Tsender , typename... Args>

QSet<Slot<Tsender, Args...>*> mSlots

mutableprivate

All attached slots.

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The documentation for this class was generated from the following file:

• /__w/1/s/libs/librepcb/core/utils/signalslot.h