corelinux::Subject Class Reference

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

#include <Subject.hpp>

List of all members.

Public Member Functions
	Subject (void)
	Default constructor.
	Subject (SubjectCref)
	Copy constructor.
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.
virtual void	removeObserver (ObserverPtr)=0 throw ( NullPointerException )
	Remove an observer from all event notifications.
virtual void	removeObserver (ObserverPtr, Event< Identifier > *)=0 throw ( NullPointerException )
	Remove an observer from specific event notifications.
virtual Iterator< ObserverPtr > *	createIterator (void)=0
	Create a iterator for all observers.
virtual Iterator< ObserverPtr > *	createIterator (Event< Identifier > *)=0 throw ( NullPointerException )
	Create a iterator for observers of this event.
virtual void	destroyIterator (Iterator< ObserverPtr > *)=0 throw ( NullPointerException )
	Deletes the iterator instance.
Protected Member Functions
virtual void	notifyObservers (Event< Identifier > *) throw ( NullPointerException )
	Performs the notification of observers for a specific event.
virtual void	notifyAllObservers (Event< Identifier > *) throw ( NullPointerException )
	Performs the notification of ALL observers for a with a specific event.

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Detailed Description

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

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Constructor & Destructor Documentation

corelinux::Subject::Subject

(

SubjectCref

)

Copy constructor.

Parameters:

Subject

const referencee

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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 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

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 Iterator<ObserverPtr>* corelinux::Subject::createIterator

(

void

)

[pure virtual]

Create a iterator for all observers.

Returns:

Iterator

Referenced by notifyAllObservers(), and notifyObservers().

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 void corelinux::Subject::destroyIterator

(

Iterator< ObserverPtr > *

)

throw ( NullPointerException ) [pure virtual]

Deletes the iterator instance.

Parameters:

Iterator

Exceptions:

NullPointerException

if iterator 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

References createIterator(), corelinux::Observer::event(), corelinux::Iterator< ElementType >::getElement(), corelinux::Iterator< ElementType >::isValid(), and corelinux::Iterator< ElementType >::setNext().

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

References createIterator(), corelinux::Observer::event(), corelinux::Iterator< ElementType >::getElement(), corelinux::Iterator< ElementType >::isValid(), and corelinux::Iterator< ElementType >::setNext().

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

• Subject.hpp
• Subject.cpp