Struct SelectionState 

pub struct SelectionState {
    pub selected: HashSet<u64>,
    pub anchor: Option<u64>,
    pub cursor: Option<u64>,
    pub dragging: bool,
}

Logical grid selection state.

Fields

selected: HashSet<u64>

Set of selected absolute row indices.

anchor: Option<u64>

Anchor for Shift+click range selection.

cursor: Option<u64>

Keyboard cursor position (active row).

dragging: bool

Whether the user is currently drag-selecting.

Implementations

impl SelectionState

pub fn clear(&mut self)

Clear all selection state.

pub fn select_all(&mut self, total_rows: u64)

Select all rows 0..total_rows.

pub fn is_selected(&self, row: u64) -> bool

Check if a row is selected.

pub fn count(&self) -> usize

Number of selected rows.

pub fn on_pointer_down( &mut self, row: u64, ctrl: bool, shift: bool, total_rows: u64, )

Handle pointer down on a row.

pub fn on_pointer_enter_drag(&mut self, row: u64, total_rows: u64)

Handle pointer enter during drag.

pub fn on_pointer_up(&mut self)

Handle pointer up — stop dragging.

pub fn on_context_menu(&mut self, row: u64)

Handle right-click: if the row is not selected, select only it. If already selected, keep selection.

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.