MRPT  1.9.9
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mrpt::system::CObserver Class Referenceabstract

Detailed Description

Inherit from this class to get notified about events from any CObservable object after subscribing to it.

The main methods in this class are:

Note that if custom (child) mrptEvent classes are used, you can tell between them in runtime with "dynamic_cast<>()".

Note
The pairs CObservable / CObserver automatically notify each other the destruction of any of them, effectively ending the subscription of events.
See also
CObservable, mrptEvent

Definition at line 34 of file CObserver.h.

#include <mrpt/system/CObserver.h>

Inheritance diagram for mrpt::system::CObserver:

Public Member Functions

 CObserver ()
 
virtual ~CObserver ()
 
void observeBegin (CObservable &obj)
 Starts the subscription of this observer to the given object. More...
 
void observeEnd (CObservable &obj)
 Ends the subscription of this observer to the given object (note that there is no need to call this method, since the destruction of the first of observer/observed will put an end to the process. More...
 

Protected Member Functions

virtual void OnEvent (const mrptEvent &e)=0
 This virtual function will be called upon receive of any event after starting listening at any CObservable object. More...
 

Private Member Functions

void internal_on_event (const mrptEvent &e)
 

Private Attributes

std::set< CObservable * > m_subscribed
 

Friends

class CObservable
 

Constructor & Destructor Documentation

◆ CObserver()

CObserver::CObserver ( )
default

◆ ~CObserver()

CObserver::~CObserver ( )
virtual

Definition at line 19 of file CObserver.cpp.

Member Function Documentation

◆ internal_on_event()

void CObserver::internal_on_event ( const mrptEvent e)
private

Definition at line 47 of file CObserver.cpp.

◆ observeBegin()

void CObserver::observeBegin ( CObservable obj)

Starts the subscription of this observer to the given object.

See also
observeEnd

Definition at line 26 of file CObserver.cpp.

Referenced by CGraphSlamHandler< GRAPH_T >::initVisualization().

Here is the caller graph for this function:

◆ observeEnd()

void CObserver::observeEnd ( CObservable obj)

Ends the subscription of this observer to the given object (note that there is no need to call this method, since the destruction of the first of observer/observed will put an end to the process.

See also
observeBegin

Definition at line 36 of file CObserver.cpp.

◆ OnEvent()

virtual void mrpt::system::CObserver::OnEvent ( const mrptEvent e)
protectedpure virtual

This virtual function will be called upon receive of any event after starting listening at any CObservable object.

Implemented in mrpt::slam::COccupancyGridMapFeatureExtractor, mrpt::graphslam::CWindowObserver, TMyExtraRenderingStuff, MyObserver, and MyObserver.

Friends And Related Function Documentation

◆ CObservable

friend class CObservable
friend

Definition at line 36 of file CObserver.h.

Member Data Documentation

◆ m_subscribed

std::set<CObservable*> mrpt::system::CObserver::m_subscribed
private

Definition at line 53 of file CObserver.h.




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