Struct Select 

pub struct Select<Msg> { /* private fields */ }

A field showing the chosen option that opens a list of options as a layer.

Closed: Enter, Space, ↓ or a click opens it. Open: ↑/↓, Home/End and PgUp/PgDn move, typing a letter jumps to the next option starting with it, Enter or Space chooses, Esc or a click elsewhere closes. A click elsewhere still reaches what it landed on, so one click on another dropdown opens that one; a click on this field while open only closes it. The pointer moves the one highlight once it moves. Style keys: select with hover, focus, active (open), disabled; select-placeholder, select-chevron, select-menu (bg) and select-option with hover, selected, checked.

Implementations

impl<Msg: 'static> Select<Msg>

pub fn new(options: impl IntoIterator<Item = impl Into<String>>) -> Self

A dropdown of options.

pub fn selected(self, index: Option<usize>) -> Self

The chosen option.

pub fn placeholder(self, text: impl Into<String>) -> Self

Faint text shown while nothing is chosen.

pub fn disabled(self, disabled: bool) -> Self

Greys the field out; it cannot be opened.

pub fn max_visible(self, rows: usize) -> Self

Rows shown before the option list scrolls; 8 by default.

pub fn on_select(self, message: impl Fn(usize) -> Msg + 'static) -> Self

Message for choosing option index.

Trait Implementations

impl<Msg: 'static> Widget<Msg> for Select<Msg>

fn measure(&self, cx: &mut MeasureCx<'_>, available: Size) -> Size

The size the widget wants when it may use up to available.

fn paint(&self, cx: &mut PaintCx<'_>, area: Rect)

Draws the widget into area.

fn paint_overlay(&self, cx: &mut PaintCx<'_>, anchor: Rect)

Draws the widget’s overlay after the whole view was painted, when it asked for one with PaintCx::request_overlay. anchor is the area the widget was painted in.

fn event(&self, cx: &mut EventCx<'_, Msg>, event: &Event) -> bool

Handles input. Returns true when the event was used; unused key and scroll events bubble to the parent widget.

fn focusable(&self) -> bool

Whether the widget can take keyboard focus.

fn children(&self) -> &[Node<Msg>]

Child nodes, for widgets that contain other widgets.

fn children_mut(&mut self) -> &mut [Node<Msg>]

Mutable child nodes, used to assign ids.