Empty

Use empty on a container to display an empty-state placeholder. It centers children in a flex column with muted coloring and comfortable padding. The first child (icon) is rendered slightly more muted than the remaining children (title and description).

Prop	Type	Default	Description
`color`	`ValueOrState<ThemeColor>`	`"neutral"`	Color tone for the muted text and icon.

Customization

Must see the source of patch at the bottom of each patch page to understand the structure then code it still code as html native element.

There are four levels of customization, in increasing order of effort:

Patch props. Each patch exposes a small, stable set of props—typically fewer than five. Lowest friction.
Context attributes. Use dataTone, dataSize, and dataDensity on a container to shift tone, size, or density for an entire subtree without touching individual elements.
Inline override. Native-wins merge strategy: any property set directly on the element overrides the patch value.
Create a variant. Clone a similar patch and edit it. Use this only when you need a reusable custom version.

Formulas

Unit - U = fontSize / 4 - convert final values with themeSpacing(n).

Size - n = intrinsic text lines, w = wrapping level, d = density factor:

height        = (n * 6 + 2 * d * w) * U
paddingBlock  = d * w * U
paddingInline = ceil(3 / w) * d * w * U
radius        = d * w * U

Base density d = 1.5:

U	w=0	w=1	w=2	w=3
height (`n = 1`)	6	9	12	15
paddingBlock	0	1.5	3	4.5
paddingInline	3	4.5	6	4.5
radius	0	1.5	3	4.5

Tone - K = N / 2 where N is the palette length. For N = 18, K = 9.

Role	Shift	n=0
Background	parent +/- n	0
Text	bg + K	6
Border	bg + K/2	3
Hover	bg + 2K/3	4
Selected / Focus	above +/- K/3	2-4

State shift range: K/3 <= delta <= 2K/3.

empty

import { type PartialElement, toState, type ValueOrState } from "@domphy/core";
import { type ThemeColor, themeColor, themeSpacing } from "@domphy/theme";

/**
 * Styles a container as an empty-state placeholder: centered flex column with
 * muted coloring and comfortable padding. Provide the icon, title, and
 * description as child elements.
 *
 * @param props.color - Theme color tone for the muted text/icon. Defaults to `"neutral"`.
 * @example
 * { div: [
 *   { span: "📭", $: [heading({ level: 1 })] },
 *   { p: "No items yet", $: [paragraph()] },
 *   { span: "Add your first item to get started", $: [small()] },
 * ], $: [empty()] }
 */
function empty(
  props: { color?: ValueOrState<ThemeColor> } = {},
): PartialElement {
  const color = toState(props.color ?? "neutral", "color");

  return {
    style: {
      display: "flex",
      flexDirection: "column",
      alignItems: "center",
      justifyContent: "center",
      gap: themeSpacing(3),
      paddingBlock: themeSpacing(12),
      paddingInline: themeSpacing(6),
      textAlign: "center",
      color: (listener) => themeColor(listener, "shift-6", color.get(listener)),
      // First child (icon area): more muted color to visually recede behind the text
      "& > :first-child": {
        color: (listener) =>
          themeColor(listener, "shift-5", color.get(listener)),
      },
    },
  };
}

export { empty };

</div>