CngxTabErrorBadgeContext

Interface

projects/common/tabs/slots/tab-error-badge.directive.ts

Referenced by#

Import#

import { CngxTabErrorBadgeContext } from '@cngx/common/tabs'

Description#

Context for the *cngxTabErrorBadge template. Renders only when the tab's errorAggregator?.shouldShow() is true; the visibility gate stays library-owned. Sibling shape to CngxStepBadgeContext.

Index#

Properties

tab

Instance Properties#

tab#CngxTabHandle

Readonly

The tab handle carrying id / label / disabled / aggregator signals.

CngxTabErrorBadge

The slot replaces only the visible error badge on the tab. The error state is communicated to assistive tech by the library, so the template stays decorative.

Visibility is library-gated. The slot renders only when the tab's errorAggregator?.shouldShow() is true; the consumer never gates it.
The SR channel is library-owned. The error is announced through the tab's aria-describedby SR-only descriptor. The built-in glyph is aria-hidden; the badge is a visual cue, not the only channel.
Do not rely on colour alone. Pair the badge with a shape or icon so the cue survives colour-blindness and forced-colours; the SR descriptor carries the meaning regardless.
Keep the template decorative. Do not add SR-only text (double-speaks) or interactive elements.