juce::ComponentTraverser Class Reference

Detailed Description

Base class for traversing components.

If you need custom focus or keyboard focus traversal for a component you can create a subclass of ComponentTraverser and return it from Component::createFocusTraverser() or Component::createKeyboardFocusTraverser().

See also

Component::createFocusTraverser, Component::createKeyboardFocusTraverser

Inheritance diagram for juce::ComponentTraverser:

Public Member Functions
virtual	~ComponentTraverser ()=default
	Destructor.
virtual Component *	getDefaultComponent (Component *parentComponent)=0
	Returns the component that should be used as the traversal entry point within the given parent component.
virtual Component *	getNextComponent (Component *current)=0
	Returns the component that comes after the specified one when moving "forwards".
virtual Component *	getPreviousComponent (Component *current)=0
	Returns the component that comes after the specified one when moving "backwards".
virtual std::vector< Component * >	getAllComponents (Component *parentComponent)=0
	Returns all of the traversable components within the given parent component in traversal order.

Constructors and Destructors

~ComponentTraverser()

virtual juce::ComponentTraverser::~ComponentTraverser ( )

virtualdefault

Destructor.

Member Functions

getDefaultComponent()

virtual Component * juce::ComponentTraverser::getDefaultComponent ( Component * parentComponent )

pure virtual

Returns the component that should be used as the traversal entry point within the given parent component.

This must return nullptr if there is no default component.

Implemented in juce::FocusTraverser, and juce::KeyboardFocusTraverser.

getNextComponent()

virtual Component * juce::ComponentTraverser::getNextComponent ( Component * current )

pure virtual

Returns the component that comes after the specified one when moving "forwards".

This must return nullptr if there is no next component.

Implemented in juce::FocusTraverser, and juce::KeyboardFocusTraverser.

getPreviousComponent()

virtual Component * juce::ComponentTraverser::getPreviousComponent ( Component * current )

pure virtual

Returns the component that comes after the specified one when moving "backwards".

This must return nullptr if there is no previous component.

Implemented in juce::FocusTraverser, and juce::KeyboardFocusTraverser.

getAllComponents()

virtual std::vector< Component * > juce::ComponentTraverser::getAllComponents ( Component * parentComponent )

pure virtual

Returns all of the traversable components within the given parent component in traversal order.

Implemented in juce::FocusTraverser, and juce::KeyboardFocusTraverser.