API reference

Here's the full contract for utils: everything you can bind, listen to, project and theme, gathered in one place. Wire up what you need and style what you want — it's standalone and signal-friendly.

Inputs

Dial utils in with 4 inputs. Bind them like any Angular @Input.

Name	Type	Default	Description
`HubTranslationService`	`Service`	`-`	Injectable service for managing translations. Methods: getTranslation(), setTranslations()
`HubOverlayService`	`Service`	`-`	Service for creating and managing overlays programmatically
`HubPopupService`	`Service`	`-`	Simplified service for creating popup elements
`TooltipDirective`	`Directive`	`-`	Directive ([tooltip]) that shows a positioned, themeable tooltip on hover/focus. Inputs: tooltip (text), placement, delay, offset.

Outputs

React to what utils does — 7 events to hook your logic onto.

Name	Type	Description
`TranslatePipe`	`Pipe`	Translates a key using HubTranslationService. Usage: {{ "key" \| translate }}
`GetPipe`	`Pipe`	Gets nested property value. Usage: {{ object \| get:"path.to.property" }}
`IsStringPipe`	`Pipe`	Checks if value is a string. Usage: {{ value \| isString }}
`IsObjectPipe`	`Pipe`	Checks if value is an object. Usage: {{ value \| isObject }}
`IsObservablePipe`	`Pipe`	Checks if value is an Observable. Usage: {{ value \| isObservable }}
`UcfirstPipe`	`Pipe`	Capitalizes first letter. Usage: {{ "hello" \| ucfirst }} → "Hello"
`UnwrapAsyncPipe`	`Pipe`	Unwraps Observable or Promise values in templates

Templates

Make it yours — 4 template slots let you project custom markup.

Name	Description	Example
`hubFocusTrap()`	Traps keyboard focus within an element. Useful for modals and dialogs.	`hubFocusTrap(zone, element, stopFocusTrap$, refocusOnClick)`
`interpolateString()`	Replaces {{ placeholders }} with values from an object	`interpolateString("Hello {{name}}", { name: "World" }) → "Hello World"`
`getValue()`	Gets nested property using dot notation	`getValue(obj, "user.profile.name")`
`equals()`	Deep equality comparison for objects and arrays	`equals({ a: 1 }, { a: 1 }) → true`

CSS variables

Theme every pixel with 19 CSS variables. Override them at :root or scope them to a wrapper.

Tooltip

Theming tokens for the [tooltip] directive.

Variable	Default	Type	Description
`--hub-tooltip-bg`	`var(--hub-ref-color-black, #000)`	color	Tooltip background colour. `var(--hub-sys-color-primary)#212529`
`--hub-tooltip-color`	`var(--hub-ref-color-white, #fff)`	color	Tooltip text colour. `#fff#f8f9fa`
`--hub-tooltip-opacity`	`0.9`	number	Opacity of the shown tooltip. `10.85`
`--hub-tooltip-padding-x`	`var(--hub-ref-space-2, 0.5rem)`	length	Horizontal padding inside the tooltip. `0.75rem1rem`
`--hub-tooltip-padding-y`	`var(--hub-ref-space-1, 0.25rem)`	length	Vertical padding inside the tooltip. `0.375rem0.5rem`
`--hub-tooltip-border-radius`	`var(--hub-sys-radius-md, 0.375rem)`	length	Corner radius of the tooltip. `0.25rem999px`
`--hub-tooltip-font-size`	`var(--hub-ref-font-size-sm, 0.875rem)`	length	Font size of the tooltip text. `0.75rem1rem`
`--hub-tooltip-font-weight`	`var(--hub-ref-font-weight-base, 400)`	number	Font weight of the tooltip text. `500600`
`--hub-tooltip-line-height`	`var(--hub-ref-line-height-base, 1.5)`	number	Line height of the tooltip text. `1.41.6`
`--hub-tooltip-max-width`	`200px`	length	Maximum width before the text wraps. `160px320px`
`--hub-tooltip-zindex`	`var(--hub-sys-zindex-tooltip, 1080)`	number	Stacking order of the tooltip element. `10802000`
`--hub-tooltip-transition-duration`	`0.15s`	transition	Fade in/out duration. `0.1s0.25s`
`--hub-tooltip-shadow`	`none`	shadow	Box shadow of the tooltip. `var(--hub-sys-shadow)0 2px 8px rgba(0,0,0,.2)`
`--hub-tooltip-font-family`	`var(--hub-ref-font-family-base, inherit)`	string	Font family of the tooltip text. `inheritmonospace`

Overlay

CSS variables consumed by the overlay/popup system (`.hub-overlay-container` / `.hub-overlay-backdrop`).

Variable	Default	Type	Description
`--hub-overlay-bg`	`var(--hub-sys-surface-elevated, #f8f9fa)`	color	Background of the overlay panel. `#fffvar(--hub-sys-surface-page)`
`--hub-overlay-border-radius`	`var(--hub-sys-radius-sm, 0.25rem)`	length	Corner radius of the overlay panel. `0.5rem0`
`--hub-overlay-shadow`	`var(--hub-sys-shadow, 0 0.5rem 1rem rgba(0,0,0,.15))`	shadow	Elevation shadow of the overlay panel. `var(--hub-sys-shadow-lg)none`
`--hub-overlay-zindex`	`var(--hub-sys-zindex-dropdown, 1000)`	number	Stacking order of the overlay panel. `10502000`
`--hub-overlay-backdrop-zindex`	`calc(var(--hub-sys-zindex-dropdown, 1000) - 1)`	number	Stacking order of the overlay backdrop (just below the panel). `10491999`

Styling and theming

No styling examples are documented yet. This section will include customization recipes and theming examples.