ChangeListener Class Reference

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

Inheritance diagram for ChangeListener:

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

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

Constructor & Destructor Documentation

~ChangeListener()

virtual ChangeListener::~ChangeListener ( )

virtualdefault

Destructor.

Member Function Documentation

changeListenerCallback()

virtual void ChangeListener::changeListenerCallback ( ChangeBroadcaster *  source )

pure virtual

Your subclass should implement this method to receive the callback.

Parameters

source

the ChangeBroadcaster that triggered the callback.

Referenced by AudioDeviceSelectorComponent::getItemHeight(), and PluginListComponent::getOptionsButton().

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

• juce_ChangeListener.h