juce::ChangeListener Class Reference

Detailed Description

Receives change event callbacks that are sent out by a ChangeBroadcaster.

A ChangeBroadcaster keeps a set of listeners to which it broadcasts a message when the ChangeBroadcaster::sendChangeMessage() method is called. A subclass of ChangeListener is used to receive these callbacks.

Note that the major difference between an ActionListener and a ChangeListener is that for a ChangeListener, multiple changes will be coalesced into fewer callbacks, but ActionListeners perform one callback for every event posted.

See also

ChangeBroadcaster, ActionListener

Inheritance diagram for juce::ChangeListener:

Public Member Functions
virtual	~ChangeListener ()=default
	Destructor.
virtual void	changeListenerCallback (ChangeBroadcaster *source)=0
	Your subclass should implement this method to receive the callback.

Constructors and Destructors

~ChangeListener()

virtual juce::ChangeListener::~ChangeListener ( )

virtualdefault

Destructor.

Member Functions

changeListenerCallback()

virtual void juce::ChangeListener::changeListenerCallback ( ChangeBroadcaster * source )

pure virtual

Your subclass should implement this method to receive the callback.

Parameters

source

the ChangeBroadcaster that triggered the callback.