GroupFocusListener¶

Overview¶

A listener that helps track focus for groups of Nodes. Properties allow you to observe when focus enters a group or moves within a group of Nodes.

Scenery (and native DOM) events make this difficult to track because the group receives focusin/focusout events even when focus moves within the group. This listener handles that for you.

@author Jesse Greenberg (PhET Interactive Simulations)

Class GroupFocusListener¶

import { GroupFocusListener } from 'scenerystack/scenery';

Constructor¶

new GroupFocusListener( groupParent : Node )¶

Instance Methods¶

focusin( event : SceneryEvent )¶

focusout( event : SceneryEvent )¶

dispose()¶

Instance Properties¶

focusInGroupProperty : TProperty<boolean>¶

(readonly)

True when the focus is somewhere in this group.

focusTargetProperty : TProperty<Node | null>¶

(readonly)

The target of the focus, or null if the focus is not in this group.

Source Code¶

See the source for GroupFocusListener.ts in the scenery repository.