sensesp::SKValueListener< T > Class Template Reference

An ValueProducer that listens to specific Signal K paths and emits its value whenever it changes. More...

#include <sensesp/signalk/signalk_value_listener.h>

Inheritance diagram for sensesp::SKValueListener< T >:

Public Member Functions
	SKValueListener (String sk_path, int listen_delay=1000, String config_path="")
void	parse_value (const JsonObject &json) override
Public Member Functions inherited from sensesp::SKListener
	SKListener (const String &sk_path, int listen_delay, const String &config_path="")
String &	get_sk_path ()
int	get_listen_delay ()
Public Member Functions inherited from sensesp::Observable
	Observable ()
	Observable (Observable &&other)
	Move constructor.
void	notify ()
int	attach (std::function< void()> observer)
	Attach an observer callback.
void	detach (int id)
	Remove a previously attached observer by its ID.
Public Member Functions inherited from sensesp::FileSystemSaveable
	FileSystemSaveable (const String &config_path)
virtual bool	load () override
	Load and populate the object from a persistent storage.
virtual bool	save () override
	Save the object to a persistent storage.
virtual bool	clear () override
	Delete the data from a persistent storage.
bool	find_config_file (const String &config_path, String &filename)
Public Member Functions inherited from sensesp::Saveable
	Saveable (const String &config_path)
virtual bool	refresh ()
	Refresh the object. This may or may not access the persistent storage but is not expected to overwrite the object's state.
const String &	get_config_path () const
Public Member Functions inherited from sensesp::ValueProducer< T >
	ValueProducer ()
	ValueProducer (const T &initial_value)
virtual const T &	get () const
template<typename VConsumer>
std::enable_if< std::is_base_of< ValueConsumer< typenameVConsumer::input_type >, VConsumer >::value &&std::is_convertible< T, typenameVConsumer::input_type >::value, std::shared_ptr< VConsumer > >::type	connect_to (std::shared_ptr< VConsumer > consumer)
	Connect a producer to a transform with a different input type.
template<typename VConsumer>
std::enable_if< std::is_base_of< ValueConsumer< typenameVConsumer::input_type >, VConsumer >::value &&std::is_convertible< T, typenameVConsumer::input_type >::value, VConsumer * >::type	connect_to (VConsumer *consumer)
template<typename VConsumer>
std::enable_if< std::is_base_of< ValueConsumer< typenameVConsumer::input_type >, VConsumer >::value &&std::is_convertible< T, typenameVConsumer::input_type >::value, VConsumer * >::type	connect_to (VConsumer &consumer)
void	emit (const T &new_value)

Additional Inherited Members
Static Public Member Functions inherited from sensesp::SKListener
static const std::vector< SKListener * > &	get_listeners ()
static bool	take_semaphore (uint64_t timeout_ms=0)
static void	release_semaphore ()
Protected Attributes inherited from sensesp::SKListener
String	sk_path {}
Protected Attributes inherited from sensesp::Saveable
const String	config_path_
Protected Attributes inherited from sensesp::ValueProducer< T >
T	output_

Detailed Description

template<class T>
class sensesp::SKValueListener< T >

An ValueProducer that listens to specific Signal K paths and emits its value whenever it changes.

Definition at line 17 of file signalk_value_listener.h.

Constructor & Destructor Documentation

SKValueListener()

template<class T>

sensesp::SKValueListener< T >::SKValueListener ( String sk_path, int listen_delay = 1000, String config_path = "" )

inline

Parameters

sk_path	The Signal K path you want to listen to for value changes
listen_delay	The minimum interval between updates in ms

Definition at line 23 of file signalk_value_listener.h.

Member Function Documentation

parse_value()

template<class T>

void sensesp::SKValueListener< T >::parse_value ( const JsonObject & json )

inlineoverridevirtual

Reimplemented from sensesp::SKListener.

Definition at line 32 of file signalk_value_listener.h.

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

• src/sensesp/signalk/signalk_value_listener.h