Struct NotificationLog 

pub struct NotificationLog { /* private fields */ }

Configurable archive log. Shipped chrome:

• mark-all-read + clear buttons in a toolbar row;
• empty-state hint when the archive is empty;
• day-bucket section headers (Today / Yesterday / This week / Earlier) above the rows for each bucket — computed against the user’s local timezone, recomputed on every archive mutation;
• StandardListItem rows with unread-as-bold differentiation.

A SearchField filter and a severity-chip filter can be composed by apps using the existing widget toolkit.

Implementations

impl NotificationLog

pub fn new(archive: Rc<NotificationArchiveModel>) -> Self

Construct a log bound to the shared archive. The archive is expected to outlive the log (typically held in app_state).

pub fn for_window(self, window_id: TeksiloWindowId) -> Self

Scope this log to entries routed to window window_id (plus any Broadcast entry) — the shape a NotificationCenterButton mounted in that window wants for its popover body. Overrides any previous for_window / for_audience call.

pub fn for_audience(self, audience: ToastAudience) -> Self

Scope this log to entries routed to audience (plus any Broadcast entry). Overrides any previous for_window / for_audience call.

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

Whether to render the toolbar row (mark-all-read + clear). Default true. Apps that want a chrome-less log (e.g. inside a custom panel that supplies its own toolbar) pass false.

pub fn empty_state(self, f: impl Fn() -> Box<dyn Widget> + 'static) -> Self

Override the empty-state hint. Default: a centered “No notifications” text. Pass a factory returning any widget for a custom empty view (illustration, call-to-action, …).

A factory rather than a widget because the log rebuilds on every archive mutation: the view has to be re-creatable each time the archive goes empty again, not just the first time.

log.empty_state(|| Box::new(TextWidget::new(tr!(inbox_zero()))))

pub fn preferred_width(self, width: f32) -> Self

Width the log reports when the host proposes an unbounded one. Default 380 dp.

This is load-bearing for the popover presentation (NotificationCenterButton): the overlay layer measures its content with a fully unbounded proposal, and a StandardListItem asked for an intrinsic width reports only its chrome, so without a preferred width the popover would size itself to whatever the two toolbar buttons happen to measure (~248 dp with the stock labels) and elide every title to a stub. Hosts that DO bound the width (a dialog, a side panel) ignore this value.

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

Height of the scrolling list area when the host proposes an unbounded height. Default 320 dp.

The log always grows into a host that bounds its height (it reports a flex weight), so this only sets the natural height a content-hugging host — again, the popover — sizes itself to.

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

Called when the user clicks anywhere on an archived entry’s row body (outside any specific action button). The default behaviour is no-op — the log is read-only display unless callers wire this hook.

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

Called when an archived action button is clicked. Apps wire this hook to replay the action — typically by mapping the ArchivedAction::intent_name to one of the app’s registered Actions via ctx.send_intent(...). Without this hook configured the action buttons are inert (the log keeps them visible for archival context).

Actions without an intent_name render as non-clickable past-action tags regardless of this hook — there’s nothing for the framework to dispatch against once the live closure has torn down.

log.on_action_invoked(|_entry, action, ctx| {
    // Bridge the dynamic intent_name to one of the app's
    // typed AppIntent variants:
    match action.intent_name.as_deref() {
        Some("app.build.retry") => ctx.send_intent(AppIntent::BuildRetry),
        Some(name) => log::warn!("unknown archived intent: {name}"),
        None => {}
    }
})

Trait Implementations

impl Debug for NotificationLog

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

Formats the value using the given formatter.

impl Widget for NotificationLog

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 accessibility(&self, builder: &mut AccessNodeBuilder)

Declare this widget’s accessibility identity.

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

Return the child widget IDs that this widget manages.

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).