Struct SelectState 

pub struct SelectState {
    pub selected_index: Option<usize>,
    pub is_open: bool,
    pub focused: bool,
    pub enabled: bool,
    pub highlighted_index: usize,
    pub scroll_offset: u16,
    pub total_options: usize,
}

State for a select component.

Fields

selected_index: Option<usize>

Currently selected index (None if nothing selected).

is_open: bool

Whether the dropdown is open.

focused: bool

Whether the select has focus.

enabled: bool

Whether the select is enabled.

highlighted_index: usize

Highlighted index in dropdown (for keyboard navigation).

scroll_offset: u16

Scroll offset for long option lists.

total_options: usize

Total number of options.

Implementations

impl SelectState

pub fn new(total_options: usize) -> Self

Create a new select state with given number of options.

pub fn with_selected(total_options: usize, selected: usize) -> Self

Create with a pre-selected index.

pub fn open(&mut self)

Open the dropdown.

pub fn close(&mut self)

Close the dropdown.

pub fn toggle(&mut self)

Toggle dropdown open/closed.

pub fn highlight_prev(&mut self)

Move highlight up.

pub fn highlight_next(&mut self)

Move highlight down.

pub fn highlight_first(&mut self)

Move highlight to first option.

pub fn highlight_last(&mut self)

Move highlight to last option.

pub fn select_highlighted(&mut self)

Select the currently highlighted option and close.

pub fn select(&mut self, index: usize)

Select a specific index.

pub fn clear_selection(&mut self)

Clear the selection.

pub fn set_total(&mut self, total: usize)

Update total options count.

pub fn ensure_visible(&mut self, viewport_height: usize)

Ensure highlighted item is visible in viewport.

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

Get the selected index.

pub fn has_selection(&self) -> bool

Check if an option is selected.

Trait Implementations

impl Clone for SelectState

fn clone(&self) -> SelectState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SelectState

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

Formats the value using the given formatter.

impl Default for SelectState

fn default() -> Self

Returns the “default value” for a type.