Poco

template < class C, class N >

class Observer

File Information

Library: Foundation
Package: Notifications
Header: Poco/Observer.h

Description

This template class implements an adapter that sits between a NotificationCenter and an object receiving notifications from it. It is quite similar in concept to the RunnableAdapter, but provides some NotificationCenter specific additional methods. See the NotificationCenter class for information on how to use this template class.

Instead of the Observer class template, you might want to use the NObserver class template, which uses an AutoPtr to pass the Notification to the callback function, thus freeing you from memory management issues.

Inheritance

Direct Base Classes: AbstractObserver

All Base Classes: AbstractObserver

Member Summary

Member Functions: accepts, clone, disable, equals, notify, operator =

Inherited Functions: accepts, clone, disable, equals, notify, operator =

Types

void

typedef void (C::* Callback)(N *);

Constructors

Observer inline

Observer(
    const Observer & observer
);

Observer inline

Observer(
    C & object,
    Callback method
);

Destructor

~Observer virtual inline

~Observer();

Member Functions

accepts virtual inline

bool accepts(
    Notification * pNf,
    const char * pName = 0
) const;

See also: Poco::AbstractObserver::accepts()

clone virtual inline

AbstractObserver * clone() const;

See also: Poco::AbstractObserver::clone()

disable virtual inline

void disable();

See also: Poco::AbstractObserver::disable()

equals virtual inline

bool equals(
    const AbstractObserver & abstractObserver
) const;

See also: Poco::AbstractObserver::equals()

notify virtual inline

void notify(
    Notification * pNf
) const;

See also: Poco::AbstractObserver::notify()

operator = inline

Observer & operator = (
    const Observer & observer
);