Struct FocusRing 

pub struct FocusRing { /* private fields */ }

Manages a linear focus ring of widget IDs.

Views use this to track which widget has focus and to cycle through the focus order with Tab / Shift+Tab.

Implementations

impl FocusRing

pub fn new(order: Vec<WidgetId>) -> Self

pub fn current(&self) -> WidgetId

The currently focused widget’s ID.

pub fn focus_next(&mut self)

Advance focus to the next widget (wraps around).

pub fn focus_prev(&mut self)

Move focus to the previous widget (wraps around).

pub fn set_focus(&mut self, id: WidgetId)

Set focus to the widget with the given ID. No-op if the ID is not in the ring.

pub fn is_focused(&self, id: WidgetId) -> bool

Returns true if the given widget currently has focus.

pub fn is_empty(&self) -> bool

Returns true if the ring contains no widgets.

pub fn len(&self) -> usize

The number of widgets in the ring.

pub fn order(&self) -> &[WidgetId]

The ordered list of widget IDs.

Trait Implementations

impl Clone for FocusRing

fn clone(&self) -> FocusRing

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FocusRing

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.