ObservableValue< TType > Class Template Reference

ObservableValue class template that implements the Observer design pattern. It allows observers to subscribe and be notified when the value changes. More...

#include <observable_value.hpp>

Public Member Functions
	ObservableValue ()=default
	~ObservableValue ()
	ObservableValue (TType value)
ObservableValue &	operator= (const TType &newValue)
void	subscribe (IObserver< TType > *observer)
void	unsubscribe (IObserver< TType > *observer)
void	set (TType newValue)
int	countSubscriber () const
const TType &	get () const

Detailed Description

template<typename TType>
class ObservableValue< TType >

ObservableValue class template that implements the Observer design pattern. It allows observers to subscribe and be notified when the value changes.

Template Parameters

TType

The type of the value being observed.

Note

If ObservableValue is destroyed, every observer is unsubscribed automatically.

ObservableValue<int> value(0);
MyObserver          observer;
 
value.subscribe(&observer);
value = 42; // This will notify the observer with the new value 42

Warning

need to implement IObserver<TType> interface for observers.

class MyObserver : public IObserver<int>
{
public:
   void update(const int& newValue) override
   {
       // Handle the updated value
   }
};

Definition at line 38 of file observable_value.hpp.

Constructor & Destructor Documentation

ObservableValue() [1/2]

template<typename TType >

ObservableValue< TType >::ObservableValue ( )

default

~ObservableValue()

template<typename TType >

ObservableValue< TType >::~ObservableValue ( )

inline

Definition at line 55 of file observable_value.hpp.

References ObservableValue< TType >::unsubscribe().

ObservableValue() [2/2]

template<typename TType >

ObservableValue< TType >::ObservableValue ( TType  value )

inline

Definition at line 61 of file observable_value.hpp.

Member Function Documentation

countSubscriber()

template<typename TType >

int ObservableValue< TType >::countSubscriber ( ) const

inline

Definition at line 95 of file observable_value.hpp.

get()

template<typename TType >

const TType& ObservableValue< TType >::get ( ) const

inline

Definition at line 100 of file observable_value.hpp.

operator=()

template<typename TType >

ObservableValue& ObservableValue< TType >::operator= ( const TType &  newValue )

inline

Definition at line 66 of file observable_value.hpp.

References ObservableValue< TType >::set().

set()

template<typename TType >

void ObservableValue< TType >::set ( TType  newValue )

inline

Definition at line 86 of file observable_value.hpp.

Referenced by ObservableValue< TType >::operator=().

subscribe()

template<typename TType >

void ObservableValue< TType >::subscribe ( IObserver< TType > *  observer )

inline

Definition at line 74 of file observable_value.hpp.

unsubscribe()

template<typename TType >

void ObservableValue< TType >::unsubscribe ( IObserver< TType > *  observer )

inline

Definition at line 80 of file observable_value.hpp.

Referenced by ObservableValue< TType >::~ObservableValue().