Struct SelectionState 

pub struct SelectionState { /* private fields */ }

State for single-item selection in a list.

Implementations

impl SelectionState

pub fn new() -> Self

Create a new selection state with no selection.

pub fn get(&self) -> Option<usize>

Get the currently selected index.

pub fn set(&mut self, index: Option<usize>)

Set the selected index.

pub fn clear(&mut self)

Clear the selection.

pub fn next(&mut self, max_count: usize)

Move selection to the next item.

pub fn prev(&mut self)

Move selection to the previous item.

pub fn auto_select_first_if_empty(&mut self, has_items: bool)

Auto-select the first item if nothing is selected and items exist.

pub fn jump_to_first(&mut self)

Jump to the first item.

pub fn jump_to_last(&mut self, len: usize)

Jump to the last item.

pub fn is_selected(&self, index: usize) -> bool

Check if an index is selected.

pub fn has_selection(&self) -> bool

Check if anything is selected.

pub fn clamp(&mut self, max_count: usize)

Clamp selection to valid range after list size changes.

Trait Implementations

impl Clone for SelectionState

fn clone(&self) -> SelectionState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SelectionState

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

Formats the value using the given formatter.

impl Default for SelectionState

fn default() -> SelectionState

Returns the “default value” for a type.