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corelinux::Subject Class Reference

Subject knows its Observer objects, communicates with its observers through event notification. More...

#include <Subject.hpp>

Inheritance diagram for corelinux::Subject::

SubjectObserver Edit Lister Select List of all members.

Public Methods

 Subject (void)
 Default constructor.

 Subject (SubjectCref)
 Copy constructor. More...

virtual ~Subject (void)
 Virtual destructor.

SubjectRef operator= (SubjectCref)
 Assignment operator.

bool operator== (SubjectCref) const
 Equality operator.

bool operator!= (SubjectCref) const
 In-Equality operator.

virtual void addObserver (ObserverPtr, Event< Identifier > *)=0 throw ( NullPointerException )
 Add an observer for a specific event. More...

virtual void removeObserver (ObserverPtr)=0 throw ( NullPointerException )
 Remove an observer from all event notifications. More...

virtual void removeObserver (ObserverPtr, Event< Identifier > *)=0 throw ( NullPointerException )
 Remove an observer from specific event notifications. More...

virtual Iterator< ObserverPtr > * createIterator (void)=0
 Create a iterator for all observers. More...

virtual Iterator< ObserverPtr > * createIterator (Event< Identifier > *)=0 throw ( NullPointerException )
 Create a iterator for observers of this event. More...

virtual void destroyIterator (Iterator< ObserverPtr > *)=0 throw ( NullPointerException )
 Deletes the iterator instance. More...


Protected Methods

virtual void notifyObservers (Event< Identifier > *) throw ( NullPointerException )
 Performs the notification of observers for a specific event. More...

virtual void notifyAllObservers (Event< Identifier > *) throw ( NullPointerException )
 Performs the notification of ALL observers for a with a specific event. More...


Detailed Description

Subject knows its Observer objects, communicates with its observers through event notification.


Constructor & Destructor Documentation

corelinux::Subject::Subject SubjectCref   
 

Copy constructor.

Parameters:
Subject  const referencee


Member Function Documentation

virtual void corelinux::Subject::addObserver ObserverPtr   ,
Event< Identifier > *   
throw ( NullPointerException ) [pure virtual]
 

Add an observer for a specific event.

Parameters:
Event  the type of event interested in
Exceptions:
NullPointer  exception if event is null

virtual Iterator<ObserverPtr>* corelinux::Subject::createIterator Event< Identifier > *    throw ( NullPointerException ) [pure virtual]
 

Create a iterator for observers of this event.

Parameters:
Event  defines the event type predicate
Returns:
Iterator
Exceptions:
NullPointerException  if event null

virtual Iterator<ObserverPtr>* corelinux::Subject::createIterator void    [pure virtual]
 

Create a iterator for all observers.

Returns:
Iterator

Reimplemented in SubjectObserver.

virtual void corelinux::Subject::destroyIterator Iterator< ObserverPtr > *    throw ( NullPointerException ) [pure virtual]
 

Deletes the iterator instance.

Parameters:
Iterator 
Exceptions:
NullPointerException  if iterator null

void corelinux::Subject::notifyAllObservers Event< Identifier > *    anEvent throw ( NullPointerException ) [protected, virtual]
 

Performs the notification of ALL observers for a with a specific event.

Parameters:
Event  key
Exceptions:
NullPointerException  if event is null

void corelinux::Subject::notifyObservers Event< Identifier > *    anEvent throw ( NullPointerException ) [protected, virtual]
 

Performs the notification of observers for a specific event.

Parameters:
Event  key
Exceptions:
NullPointerException  if event is null

virtual void corelinux::Subject::removeObserver ObserverPtr   ,
Event< Identifier > *   
throw ( NullPointerException ) [pure virtual]
 

Remove an observer from specific event notifications.

Parameters:
Observer  to remove
Exceptions:
NullPointer  exception Observer or Event is null

virtual void corelinux::Subject::removeObserver ObserverPtr    throw ( NullPointerException ) [pure virtual]
 

Remove an observer from all event notifications.

Parameters:
Observer  to remove
Exceptions:
NullPointer  exception Observer is null

Reimplemented in SubjectObserver.


The documentation for this class was generated from the following files:
This is the CoreLinux++ reference manual
Provided by The CoreLinux Consortium