import { Meta, Canvas, Primary, Controls } from "@storybook/addon-docs/blocks";

import * as stories from "./item.stories";

<Meta of={stories} />

```ts
import { ItemModule } from "@bitwarden/components";
```

# Item

`<bit-item>` is a horizontal card that contains one or more interactive actions.

It is a generic container that can be used for either standalone content, an alternative to tables,
or to list nav links.

<Canvas of={stories.Default} />

<br />

Items used within a parent `bit-layout` component will not have a border radius, since the
`bit-layout` background is white.

<Canvas of={stories.WithoutBorderRadius} />

<br />
<br />

## Primary Content

The primary content of an item is supplied by `bit-item-content`.

### Content Types

The content can be a button, anchor, or static container.

```html
<bit-item>
  <a bit-item-content routerLink="..."> Hi, I am a link. </a>
</bit-item>

<bit-item>
  <button bit-item-content (click)="...">And I am a button.</button>
</bit-item>

<bit-item>
  <bit-item-content> I'm just static :( </bit-item-content>
</bit-item>
```

<Canvas of={stories.ContentTypes} />

### Content Slots

`bit-item-content` contains the following slots to help position the content:

| Slot                      | Description                                                                                               |
| ------------------------- | --------------------------------------------------------------------------------------------------------- |
| default                   | primary text or arbitrary content; fan favorite                                                           |
| `slot="secondary"`        | supporting text; under the default slot                                                                   |
| `slot="start"`            | commonly an icon or avatar; before the default slot                                                       |
| `slot="default-trailing"` | commonly a badge; default content that should not be truncated and is placed right after the default slot |
| `slot="end"`              | commonly an icon; placed at the far end after the default slot                                            |

- Note: There is also an `end` slot within `bit-item` itself. Place
  [interactive secondary actions](#secondary-actions) there, and place non-interactive content (such
  as icons) in `bit-item-content`

```html
<bit-item>
  <button bit-item-content type="button">
    <bit-avatar slot="start" text="Foo"></bit-avatar>
    foo&#64;bitwarden.com
    <span bitBadge variant="primary" slot="default-trailing">Auto-fill</span>
    <ng-container slot="secondary">
      <div>Bitwarden.com</div>
      <div><em>locked</em></div>
    </ng-container>
    <i slot="end" class="bwi bwi-lock" aria-hidden="true"></i>
  </button>
</bit-item>
```

<Canvas of={stories.ContentSlots} />

## Secondary Actions

Secondary interactive actions can be placed in the item through the `"end"` slot, outside of
`bit-item-content`.

Each action must be wrapped by `<bit-item-action>`.

Actions are commonly icon buttons or badge buttons.

```html
<bit-item>
  <button bit-item-content>...</button>

  <ng-container slot="end">
    <bit-item-action>
      <button type="button" bit-chip-action variant="primary" label="Auto-fill"></button>
    </bit-item-action>
    <bit-item-action>
      <button type="button" bitIconButton="bwi-clone" label="Copy"></button>
    </bit-item-action>
    <bit-item-action>
      <button type="button" bitIconButton="bwi-ellipsis-v" label="Options"></button>
    </bit-item-action>
  </ng-container>
</bit-item>
```

## Text Overflow Behavior

The default behavior for long text is to truncate it. However, you have the option of changing it to
wrap instead if that is what the design calls for.

This can be changed by passing `[truncate]="false"` to the `bit-item-content`.

```html
<bit-item>
  <bit-item-content [truncate]="false">
    Long text goes here!
    <ng-container slot="secondary">This could also be very long text</ng-container>
  </bit-item-content>
</bit-item>
```

### Truncation (Default)

<Canvas of={stories.TextOverflowTruncate} />

### Wrap

<Canvas of={stories.TextOverflowWrap} />

## Item Groups

Groups of items can be associated by wrapping them in the `<bit-item-group>`.

<Canvas of={stories.MultipleActionList} />

<Canvas of={stories.SingleActionList} />

### A11y

Keyboard nav is currently disabled due to a bug when used within a virtual scroll viewport.

Item groups utilize arrow-based keyboard navigation
([further reading here](https://www.w3.org/WAI/ARIA/apg/patterns/grid/examples/layout-grids/#kbd_label)).

Use `aria-label` or `aria-labelledby` to give groups an accessible name.

```html
<bit-item-group aria-label="My Items">
  <bit-item>...</bit-item>
  <bit-item>...</bit-item>
  <bit-item>...</bit-item>
</bit-item-group>
```

### Virtual Scrolling

<Canvas of={stories.VirtualScrolling} />
