[Components](https://oods-foundry.com/components) / primitive

# Stack

Arranges related child content vertically or horizontally.

Generated from @oods/foundry 0.10.1

- Categories

  primitive

- Contexts

  card, detail, form, list, timeline

- Readiness

  `proven-in-generated-apps`

## Playground

This component's contract doesn't list typed props, so the playground shows its documented example.

Documented example `stack-wrapped-row` : resize to phone width, children wrap in DOM order.

The render follows the page's theme switch: light, dark or high contrast. Both frameworks render the same example.

The real Stack, live

React

Primary

Secondary

Vue

Primary

Secondary

## Code

The documented example. HTML is the markup the React component renders for it, which @oods/component-styles styles.

**React**

```
import { Stack } from '@oods/components-react';
import '@oods/component-styles/css';

export function Example() {
  return (
    <Stack
      direction="row"
      gap="sm"
      align="center"
      wrap={true}
    >
      <div>Primary</div>
      <div>Secondary</div>
    </Stack>
  );
}
```

## Props, slots and events

Contract version 1.1.0. Types are from the React declarations in @oods/components-react.

Props

| Prop | Type | Required | Documented example |
| - | - | - | - |
| `direction` | `"row" \| "column" \| undefined` | no | `row` |
| `gap` | `string \| undefined` | no | `sm` |
| `align` | `AlignItems \| undefined` | no | `center` |
| `justify` | `JustifyContent \| undefined` | no | |
| `wrap` | `boolean \| undefined` | no | `true` |

### Slots

default

### Events

none

## States

row, column, wrapped

## Accessibility

- Role

  `none`

- How it gets its name

  `none` on `:root`

### Keyboard

The contract lists no keyboard behaviour.

### Obligations in the contract

- Does not alter child semantics

Maps saved-schema stack and inline modes to one flex primitive; patternComponent and fields are executed composition directives. Trait recipe directives authored on pattern-group Stacks are consumed by codegen: channelsField, templatesField, policiesField, conversationsField, labelField and showActor are left unbound (a layout container reads no data and the lowered StatusTimeline never governed them), while historyField and showReason travel with the lowering to the StatusTimeline whose contract governs them. Two more authoring leftovers are consumed unbound: the form composer leaves as on a Stack when it expands a heading title slot into several components, and a pattern-group Stack restates its first fields entry as a generic field; a layout container renders neither.

## Tokens

The token roles this component reads.

- `layout.gap`

## Readiness

The evidence recorded for this component, with its label.

`proven-in-generated-apps`: catalog_list gives this label when generated React and Vue apps in the runtime sweep that ships with this version both use the component. That sweep was measured on the published 0.4.1, not on this version.

Readiness evidence

| Evidence | React | Vue |
| - | - | - |
| state | implemented-evidence-complete | implemented-evidence-complete |
| versioned contract | passed | passed |
| target implementation | passed | passed |
| package export | passed | passed |
| public declaration | passed | passed |
| dependency closure | passed | passed |
| framework scenario | passed | passed |
| accessibility | verified | verified |
| interaction | not-applicable | not-applicable |
| visual themes | verified | verified |

Stack presents content and owns no focusable control or action; authored child actions remain the consumer's responsibility.

## Use your own

You can replace this component with your own React or Vue component. Map it, and generated code imports yours at the exact version you name. A contract report, run in a real browser, lists what your component met, what it didn't, and what wasn't checked.

The `component_map` call, with the parts in angle brackets yours to fill:

```
{
  "action": "create",
  "apply": true,
  "externalSystem": "<your design system>",
  "externalComponent": "<YourStack>",
  "oodsTraits": [
    "<trait names>"
  ],
  "substitution": {
    "component": "Stack",
    "react": {
      "package": "<your-package>/react",
      "version": "<exact version>",
      "export": "<YourStack>"
    },
    "vue": {
      "package": "<your-package>/vue",
      "version": "<exact version>",
      "export": "<YourStack>"
    }
  }
}
```

## How this page was made

Generated at build from the published data, each source with the hash of what was read. [The page's manifest](https://oods-foundry.com/components/stack/manifest.json).

- **Contract**: `@oods/component-contracts@0.10.1 componentContracts.Stack` `sha256:a5a9e29f3328…`
- **Documented example**: `@oods/component-contracts@0.10.1 sharedScenarios stack-wrapped-row` `sha256:0d90b9f40267…`
- **Catalog entry (catalog_list)**: `generated/0.10.1/system/catalog.json Stack` `sha256:ab5b454dc272…`
- **React readiness**: `@oods/components-react@0.10.1 readiness Stack` `sha256:b2233229ccb7…`
- **Vue readiness**: `@oods/components-vue@0.10.1 readiness Stack` `sha256:34f4afe16221…`
- **Prop types**: `generated/0.10.1/components/prop-types.json Stack` `sha256:e3a73964e923…`