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💬 Feedback & Notifications

Components for user notifications, contextual information, loading states, and tooltips.

🔔 ToastContainer

Global container for toast notifications (success, error, info, warning). Components never mount it: they call the store toasts (lib/stores/app/toastStore.svelte.ts).

import {toasts} from '$lib/stores/app/toastStore.svelte';

toasts.success('Saved');
toasts.error('Sync failed', 20000); // custom duration in ms
  • Position: stacked at the top centre of the viewport (fixed top-4 left-1/2 -translate-x-1/2, z-[9999]), newest last, each sliding in from above.
  • Auto-dismiss after a per-variant default — success and info 8 s, warning 10 s, error 15 s — or the duration passed to the call; a thin bar counts the time down. A duration of 0 keeps the toast until it is dismissed.
  • Dismiss: the ✕ button (toast-dismiss), which stays the keyboard- and screen-reader path, or a swipe of at least 60 px left, right or up (pointer events: finger, pen and mouse).
  • Color-coded by variant, with a matching icon; test ids toast-{variant}.
  • The store also offers show(variant, message, duration?), dismiss(id) and clear(); toasts are cleared when the signed-in account changes (client-session reset, e.g. logout).

🧼 HTML messages

A message may contain markup — flags, coloured badges, icons, links — and is rendered with {@html sanitizeHtml(message)} (lib/utils/core/sanitizeHtml.ts, DOMPurify): the markup is kept, event-handler attributes, <script> and javascript: URLs are dropped. Sanitising is the safety net, not a licence: escape any user or provider text you put into a message with escapeHtml.

Links inside a toast work like normal links. A press that starts on a link (or a button) never starts a swipe, so tapping it navigates instead of dragging the toast away. Build links to detail pages with entityDetailLinkHtml({kind: 'asset', id} | {kind: 'fx', slug}, label) (lib/utils/core/entityLink.ts): it accepts only those two routes and escapes the label. ToastContainer.test.ts covers both contracts.

Used by: mounted once in the authenticated layout, routes/(app)/+layout.svelte.

ℹ️ InfoBanner

An inline banner for contextual information or warnings (ui/feedback/InfoBanner.svelte).

  • variant: info (default), warning, error, success — colours and default icon (showIcon, default true)
  • Content from message or from the children; with message, the banner hides itself when the value is empty or null
  • dismissible adds an ✕ that calls ondismiss
  • role="alert" for error, role="status" otherwise; test id info-banner-{variant}
  • Inline within page content (not a toast)

Used by: BrokerModal (validation errors), settings tabs, the sync and import modals, RegisterCard.

🛡️ DataQualityBanner

The unified data quality banner component for surfacing data warnings across the dashboard, asset detail, and forex detail pages. Replaces ad-hoc inline banners with a standardized DataQualityIssue model.

See DataQualityBanner Developer Manual for full documentation.

Modes:

  • grouped — dashboard: single container with all issues sorted by severity
  • flat — detail pages: one banner per issue

CTA: actions are emitted via onaction(action, target, issue) — the component does not navigate or open modals directly.

Used by: Dashboard (/dashboard), Asset detail (/assets/:id), FX detail (/fx/:pair), and the risk panels (RiskAnalysisPanel, AssetSetRiskPanel, RiskPanelHeader).

⏳ LoadingSpinner

A simple animated spinner for async loading states (ui/feedback/LoadingSpinner.svelte).

  • size: sm, md (default), lg — the vertical padding around it
  • text below the spinner, defaulting to the translated common.loading
  • role="status", aria-live="polite"

Used by: API calls, lazy-loaded content, search results.

💡 Tooltip

Hover/tap tooltip with automatic positioning (ui/feedback/Tooltip.svelte).

  • Content: text, or html (rendered through sanitizeHtml); math renders inline $…$ LaTeX with KaTeX
  • Positions: top (default), bottom, left, right — flips when it would leave the viewport; the tooltip is moved to document.body and drawn with fixed positioning, so a modal's overflow or a parent's opacity never affects it
  • Plain hover opens after showDelayMs (default 500 ms), so crossing the page does not flash tooltips; a click, a tap or Enter/Space on the focused trigger opens it at once and pins it
  • A pinned tooltip stays while the pointer is on the trigger or on the tooltip itself; it closes on a second click on the trigger, on a click outside, or 30 s after contact ends
  • interactiveChild: when the child is itself a button or a link, the wrapper does not add its own role="button" and tab stop

Used by: Toolbar buttons, icon-only buttons, info badges, DocsLink.