Abstract base class of an event signal. More...

#include <WSignal.h>

Inheritance diagram for Wt::EventSignalBase:

Public Member Functions
const char *	name () const
	Returns the event name.

virtual bool	isConnected () const override
	Returns whether this signal is connected.

void	disconnect (JSlot &slot)
	Disconnects a JSlot.

void	preventDefaultAction (bool prevent=true)
	Prevents the default browser action.

bool	defaultActionPrevented () const
	Returns whether the default browser action is prevented.

void	preventPropagation (bool prevent=true)
	Prevents event propagation.

bool	propagationPrevented () const
	Returns whether event propagation is prevented.

void	ignoreBubbling (bool ignore=true)
	Ignores bubbling events.

bool	bubblingIgnored () const
	Returns whether bubbling events are ignored.

virtual Wt::Signals::connection	connect (WObject *target, WObject::Method method)=0
	Connects to a slot.

template<class T , class V >
Wt::Signals::connection	connect (T target, void(V::method)())
	Connects to a slot.

Public Member Functions inherited from Wt::SignalBase
template<class T , class V >
Wt::Signals::connection	connect (T target, void(V::method)())
	Connects to a slot.

Detailed Description

Abstract base class of an event signal.

An event signal is directly associated with a user-interface generated event.

Member Function Documentation

◆ bubblingIgnored()

bool Wt::EventSignalBase::bubblingIgnored ( ) const

Returns whether bubbling events are ignored.

See also: ignoreBubbling()

◆ connect() [1/2]

template<class T , class V >

Wt::Signals::connection Wt::SignalBase::connect	(	T *	target,
		void(V::*)()	method
	)

Connects to a slot.

Every signal can be connected to a slot which does not take any arguments (and may thus ignore signal arguments).

◆ connect() [2/2]

virtual Wt::Signals::connection Wt::SignalBase::connect	(	WObject *	target,
		WObject::Method	method
	)

virtual

Connects to a slot.

Every signal can be connected to a slot which does not take any arguments (and may thus ignore signal arguments).

Implements Wt::SignalBase.

Reimplemented in Wt::JSignal< A >, Wt::JSignal< ::int64_t >, Wt::JSignal< ::uint64_t >, Wt::JSignal< A... >, Wt::JSignal< bool >, Wt::JSignal< double >, Wt::JSignal< double, double >, Wt::JSignal< int >, Wt::JSignal< int, int >, Wt::JSignal< int, int, int, int >, Wt::JSignal< int, int, std::string, std::string, std::string, Wt::WMouseEvent >, Wt::JSignal< int, int, std::string, std::string, Wt::WMouseEvent >, Wt::JSignal< long long >, Wt::JSignal< long long, bool >, Wt::JSignal< std::string >, Wt::JSignal< std::string, std::string >, Wt::JSignal< std::string, std::string, std::string, std::string, Wt::WMouseEvent >, Wt::JSignal< std::string, std::string, Wt::WMouseEvent >, Wt::JSignal< std::string, std::string, Wt::WTouchEvent >, Wt::JSignal< Wt::WGoogleMap::Coordinate >, Wt::JSignal< Wt::WTouchEvent >, and Wt::JSignal<>.

◆ defaultActionPrevented()

bool Wt::EventSignalBase::defaultActionPrevented ( ) const

Returns whether the default browser action is prevented.

See also: preventDefaultAction()

◆ ignoreBubbling()

void Wt::EventSignalBase::ignoreBubbling ( bool ignore = true )

Ignores bubbling events.

An event bubbles when it is propagated to the ancestors of the event target. This prevents the signal from being emited if the target of the event is not the owner of the signal.