Library: Foundation
Package: Notifications
Header: Poco/AbstractObserver.h
Description
Inheritance
Known Derived Classes: NObserver, Observer
Member Summary
Member Functions: accepts, backlog, clone, disable, equals, notify, operator =, start
Constructors
AbstractObserver
AbstractObserver
AbstractObserver(
const AbstractObserver & observer
);
Destructor
~AbstractObserver 
virtual ~AbstractObserver();
Member Functions
accepts
virtual bool accepts(
Notification * pNf,
const char * pName
) const = 0;
accepts
virtual bool accepts(
const Notification::Ptr & pNf
) const = 0;
backlog 
virtual int backlog() const;
Returns number of queued messages that this Observer has. For non-active (synchronous) observers, always returns zero.
clone
virtual AbstractObserver * clone() const = 0;
disable
virtual void disable() = 0;
equals
virtual bool equals(
const AbstractObserver & observer
) const = 0;
notify
virtual void notify(
Notification * pNf
) const = 0;
operator =
AbstractObserver & operator = (
const AbstractObserver & observer
);
start
virtual void start();
No-op. This method can be implemented by inheriting classes which require explicit start in order to begin processing notifications.