Library: Foundation
Package: Events
Header: Poco/NotificationStrategy.h
Description
The interface that all notification strategies must implement.
Note: Event is based on policy-driven design, so every strategy implementation must provide all the methods from this interface (otherwise: compile errors) but does not need to inherit from NotificationStrategy.
Member Summary
Member Functions: add, clear, empty, notify, remove
Types Aliases
DelegateHandle
using DelegateHandle = TDelegate *;
Constructors
NotificationStrategy 
Destructor
~NotificationStrategy 
virtual ~NotificationStrategy();
Member Functions
add
virtual DelegateHandle add(
const TDelegate & delegate
) = 0;
Adds a delegate to the strategy.
clear
virtual void clear() = 0;
Removes all delegates from the strategy.
empty
virtual bool empty() const = 0;
Returns false if the strategy contains at least one delegate.
notify
virtual void notify(
const void * sender,
TArgs & arguments
) = 0;
Sends a notification to all registered delegates.
remove
virtual void remove(
const TDelegate & delegate
) = 0;
Removes a delegate from the strategy, if found. Does nothing if the delegate has not been added.
remove
virtual void remove(
DelegateHandle delegateHandle
) = 0;
Removes a delegate from the strategy, if found. Does nothing if the delegate has not been added.