Struct Calendar 

pub struct Calendar { /* private fields */ }

Standalone month-grid date picker. See the module docs for the full feature list and a usage example.

Implementations

impl Calendar

pub fn single(value: Signal<Option<Date>>) -> Self

Construct a calendar in single-selection mode bound to a nullable date signal.

pub fn range(value: Signal<Option<DateRange>>) -> Self

Construct a calendar in range-selection mode bound to a nullable date-range signal.

pub fn first_day_of_week(self, w: Weekday) -> Self

Override the locale-derived first day of the week.

pub fn week_numbers(self, mode: WeekNumberDisplay) -> Self

Show or hide the leading week-number column.

pub fn show_today_button(self, show: bool) -> Self

Show a “Today” button in the footer that jumps focus and selection (in single mode) to today.

pub fn show_navigation(self, show: bool) -> Self

Show or hide the prev/next month navigation arrows.

pub fn min_date(self, d: Date) -> Self

Earliest allowed date; days before this read as disabled.

pub fn max_date(self, d: Date) -> Self

Latest allowed date; days after this read as disabled.

pub fn disabled_date_filter(self, f: impl Fn(Date) -> bool + 'static) -> Self

Per-cell predicate. true ⇒ cell is disabled (no click, no keyboard commit, AT marks disabled).

pub fn label(self, label: impl Into<LocalizedString>) -> Self

Override the AT label. Default: “Calendar, May 2026” (localized, derived from the visible month).

pub fn enabled(self, enabled: impl Into<Prop<bool>>) -> Self

Set the enabled state, statically or reactively. Forwarded to the arena at build time — a bound Signal<bool> updates live.

pub fn on_selection_changed( self, f: impl Fn(Option<Date>, &mut EventContext<'_>) + 'static, ) -> Self

Fired when the selection changes. In range mode use on_range_changed instead — this callback fires on every committed-day change in range mode too, passing the just-committed endpoint.

pub fn on_range_changed( self, f: impl Fn(Option<DateRange>, &mut EventContext<'_>) + 'static, ) -> Self

Fired in range mode whenever a range is committed (second click of the pair). None fires when the user resets via Escape or when the bound value is externally cleared.

pub fn on_month_changed( self, f: impl Fn(YearMonth, &mut EventContext<'_>) + 'static, ) -> Self

Fired when the visible month changes (navigation arrows, keyboard PageUp/Down, today jump).

pub fn on_activate( self, f: impl Fn(Date, &mut EventContext<'_>) + 'static, ) -> Self

Fired in single mode on Enter or click (i.e. when the user “double commits”). Distinct from selection change; popover hosts use this to dismiss themselves only on a real click, not on keyboard navigation.

pub fn visible_month_signal(&self) -> Signal<YearMonth>

Reactive accessor for the currently-visible month.

pub fn focused_date_signal(&self) -> Signal<Date>

Reactive accessor for the focused-cell date.

pub fn mode_signal(&self) -> Signal<CalendarMode>

Reactive accessor for the body mode (Days / Months / Years). Drives the header-zoom UX. Apps can read this to react to mode changes, or write to it to programmatically zoom in/out.

Trait Implementations

impl Debug for Calendar

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

Formats the value using the given formatter.

impl Widget for Calendar

fn build(&mut self, ctx: &mut BuildContext<'_>) -> Vec<WidgetId>

Compose child widgets. Called once after the widget is placed in the arena, and again on environment change (theme switch, locale switch). Takes &mut self — store child IDs, signal handles, any state needed later. Returns the list of root child IDs (empty for leaf widgets).

fn layout_response( &self, proposal: SizeProposal, ctx: &LayoutContext<'_>, ) -> LayoutResponse

Respond to the parent’s size proposal with this widget’s wanted size, grow/shrink weights, and compression floor (see [LayoutResponse]).

fn place_children( &self, bounds: Rect, _proposal: SizeProposal, children: &mut [WidgetPlacement], _ctx: &LayoutContext<'_>, )

Position children within the allocated bounds.

fn children(&self) -> Vec<WidgetId>

Return the child widget IDs that this widget manages.

fn accessibility(&self, builder: &mut AccessNodeBuilder)

Declare this widget’s accessibility identity.

fn type_name(&self) -> &'static str

Concrete type name of this widget (e.g. "teksilo_widgets::button::Button"). The default implementation resolves at the impl site via std::any::type_name::<Self>(), so calls through &dyn Widget correctly dispatch to the monomorphized fn for the concrete type — getting the concrete name through the vtable without per-impl boilerplate.

fn cacheable_layout(&self) -> bool

Whether this widget’s layout_response may be memoized by the per-pass layout cache. Defaults to true.

fn paint(&self, _bounds: Rect, _canvas: &mut Canvas, _ctx: &PaintContext<'_>)

Draw the widget’s visual representation.

fn wants_after_paint(&self) -> bool

Whether this widget wants its after_paint hook to fire each frame. Returning false (the default) saves a virtual call per widget per frame for the vast majority of widgets that don’t aggregate descendant geometry.

fn after_paint(&self, _view: &WidgetTreeView<'_>, _ctx: &PaintContext<'_>)

Called once per frame after this widget’s subtree has finished painting. Receives a read-only view of the layout-resolved arena so a parent can read its descendants’ final bounds — e.g. TitleBar aggregates its drag region and control-button rects into a single HitRegions payload for the Windows backend’s WM_NCHITTEST.

fn wants_post_paint(&self) -> bool

Whether this widget wants its post_paint hook to fire each frame. Returning false (the default) saves a virtual call per widget per frame for the vast majority of widgets that don’t draw a foreground over their children.

fn post_paint( &self, _bounds: Rect, _canvas: &mut Canvas, _ctx: &PaintContext<'_>, )

Draw a foreground layer over this widget’s children.

fn wants_descendant_redirects(&self) -> bool

Whether this widget wants the AT walker to consult its a11y_redirect_descendant hook for every descendant during AT tree emission, not just its direct arena children.

fn a11y_redirect_descendant( &self, _self_id: WidgetId, _descendant: WidgetId, ) -> Option<NodeId>

Optional redirection hook for AT-tree placement of a child.

fn accessible_title_hint(&self) -> Option<String>

Suggest an accessible title to an enclosing container that wraps this widget as content — typically a modal / dialog shell that wants to propagate the inner content’s visible title as the shell’s own accessible name.

fn initial_focus_hint(&self) -> Option<WidgetId>

Optional hint that directs initial focus to a specific descendant when this widget is the root of a deferred-built modal surface.

fn accessibility_children(&self) -> Option<Vec<WidgetId>>

Optional override for the child ORDER presented to assistive technology, when it must differ from the paint / z-order child order returned by children.

fn as_any(&self) -> Option<&(dyn Any + 'static)>

Downcast hook. Default implementation returns None; concrete widgets override with Some(self) when they want to expose their concrete type to test-level introspection or reflection. The trait already bounds on std::any::Any so concrete types satisfy the 'static requirement.

fn as_any_mut(&mut self) -> Option<&mut (dyn Any + 'static)>

Mutable counterpart of as_any. Default returns None; widgets that want to expose mutable state to tests (e.g. so a test can mutate a Scene inside a SceneView post-layout) override with Some(self). Should follow the same opt-in pattern as as_any: only widgets that opt into & introspection should opt into &mut.

fn clips_children(&self) -> bool

Whether this widget clips its children to its bounds.

fn focus_reveal_rect(&self, _bounds: Rect) -> Option<Rect>

The rectangle (in absolute tree coordinates) that best represents this widget when the framework reveals it into an ancestor scroll area on focus gain. Returning None (the default) reveals the widget’s whole bounds — correct for most controls.

fn hit_shape(&self, _local_point: Point, _bounds: Rect) -> bool

Whether the point lies inside this widget’s actual shape, not just its rectangular bounds. Consulted by hit-testing right after the bounds check: returning false for a point that is inside the bounding box makes the widget transparent to the click there, so it falls through to whatever sibling is painted underneath (the same machinery as a fully pass-through node, but shape-aware).

fn preserves_children_on_rebuild(&self) -> bool

How rebuild_single_widget treats this widget’s existing children when re-running its build().

fn tooltip_has_content(&self) -> bool

Whether this widget, used as tooltip content, currently has anything worth showing.

fn declare_shortcuts(&self) -> Vec<Shortcut>

Declare the rebindable keyboard shortcuts this widget exposes, without installing handlers. The framework calls this at arena insertion time (before build()) and at certain lazy boundaries (e.g. Switcher walks declarations on its not-yet-mounted Pending slots), so settings UIs and the ShortcutRegistry see the keystrokes the moment the owning container mounts — even if build() hasn’t run.

fn take_handler_set(&mut self) -> Option<HandlerSet>

Extract attached handler set from a WidgetWithHandlers wrapper. Called during arena insertion to transfer handlers to the WidgetNode. Default: returns None (no attached handlers).