Struct List 

pub struct List {
    pub direction: ListDirection,
    pub selection_mode: SelectionMode,
    pub item_height: Option<f32>,
    pub gap: f32,
    pub scroll_offset: f32,
    /* private fields */
}

Virtualized list widget.

Fields

direction: ListDirection

Scroll direction

selection_mode: SelectionMode

Selection mode

item_height: Option<f32>

Fixed item height (if None, items have variable height)

gap: f32

Gap between items

scroll_offset: f32

Current scroll offset

Implementations

impl List

pub fn new() -> Self

Create a new empty list.

pub const fn direction(self, direction: ListDirection) -> Self

Set the scroll direction.

pub const fn selection_mode(self, mode: SelectionMode) -> Self

Set the selection mode.

pub const fn item_height(self, height: f32) -> Self

Set fixed item height.

pub const fn gap(self, gap: f32) -> Self

Set gap between items.

pub fn items(self, items: impl IntoIterator<Item = ListItem>) -> Self

Add items to the list.

pub fn render_with<F>(self, f: F) -> Self

where F: Fn(usize, &ListItem) -> Box<dyn Widget> + Send + Sync + 'static,

Set the render callback for items.

pub fn with_test_id(self, id: impl Into<String>) -> Self

Set the test ID.

pub fn item_count(&self) -> usize

Get total item count.

pub fn selected_indices(&self) -> &[usize]

Get selected indices.

pub fn visible_range(&self) -> Range<usize>

Get visible range.

pub const fn content_size(&self) -> f32

Get total content size.

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

Scroll to a specific item.

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

Scroll to ensure an item is visible.

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

Select an item.

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

Deselect an item.

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

Toggle item selection.

pub fn clear_selection(&mut self)

Clear all selections.

Trait Implementations

impl Default for List

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for List

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for List

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Widget for List

fn type_id(&self) -> TypeId

Get the type identifier for this widget type.

fn measure(&self, constraints: Constraints) -> Size

Compute intrinsic size constraints.

fn layout(&mut self, bounds: Rect) -> LayoutResult

Position children within allocated bounds.

fn paint(&self, canvas: &mut dyn Canvas)

Generate draw commands for rendering.

fn event(&mut self, event: &Event) -> Option<Box<dyn Any + Send>>

Handle input events.

fn children(&self) -> &[Box<dyn Widget>]

Get child widgets for tree traversal.

fn children_mut(&mut self) -> &mut [Box<dyn Widget>]

Get mutable child widgets.

fn is_focusable(&self) -> bool

Check if this widget can receive keyboard focus.

fn test_id(&self) -> Option<&str>

Get the test ID for this widget (if any).

fn bounds(&self) -> Rect

Get the current bounds of this widget.

fn is_interactive(&self) -> bool

Check if this widget is interactive (can receive focus/events).

fn accessible_name(&self) -> Option<&str>

Get the accessible name for screen readers.

fn accessible_role(&self) -> AccessibleRole

Get the accessible role.