Struct Focus 

pub struct Focus { /* private fields */ }

Current interaction target (separate from history). Focus only applies to nodes that are present and experience-visible.

Implementations

impl Focus

pub fn new() -> Self

pub fn current(&self) -> Option<NodeId>

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

pub fn set(&mut self, field: &Field, id: NodeId) -> bool

Set focus to id if it exists and is experience-visible.

pub fn clear(&mut self)

pub fn on_removed(&mut self, removed: NodeId)

If the focused node is removed, clear focus.

pub fn on_hidden(&mut self, field: &Field, id: NodeId)

If the focused node becomes hidden (collapse/hide/detach), clear focus.

Trait Implementations

impl Clone for Focus

fn clone(&self) -> Focus

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Focus

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

Formats the value using the given formatter.

impl Default for Focus

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Focus

fn eq(&self, other: &Focus) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Focus

impl Eq for Focus

impl StructuralPartialEq for Focus