# Class: `BroadcastChannelWrapper`

[@jupyterlite/contents](../modules/jupyterlite_contents.md).BroadcastChannelWrapper

A broadcaster for the ServiceWorker

## Implements

- [`IBroadcastChannelWrapper`](../modules/jupyterlite_contents.md#ibroadcastchannelwrapper)

## Constructors

### `constructor`

> **`new BroadcastChannelWrapper`**(`options`)

#### Parameters

| Name      | Type                                                                                 |
| :-------- | :----------------------------------------------------------------------------------- |
| `options` | [`IOptions`](../interfaces/jupyterlite_contents.BroadcastChannelWrapper.IOptions.md) |

#### Defined in

[packages/contents/src/broadcast.ts:20](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/contents/src/broadcast.ts#L20)

## Properties

### `_channel`

> `Protected` **`_channel`**: `null` \| `BroadcastChannel` = `null`

#### Defined in

[packages/contents/src/broadcast.ts:160](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/contents/src/broadcast.ts#L160)

### `_contents`

> `Protected` **`_contents`**: `ContentsManager`

#### Defined in

[packages/contents/src/broadcast.ts:161](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/contents/src/broadcast.ts#L161)

### `_enabled`

> `Protected` **`_enabled`**: `boolean` = `false`

#### Defined in

[packages/contents/src/broadcast.ts:162](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/contents/src/broadcast.ts#L162)

### `isDisposed`

> **`isDisposed`**: `boolean` = `false`

#### Implementation of

IBroadcastChannelWrapper.isDisposed

#### Defined in

[packages/contents/src/broadcast.ts:18](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/contents/src/broadcast.ts#L18)

## Accessors

### `enabled`

> `get` **`enabled`**(): `boolean`

#### Returns

`boolean`

#### Implementation of

IBroadcastChannelWrapper.enabled

#### Defined in

[packages/contents/src/broadcast.ts:24](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/contents/src/broadcast.ts#L24)

## Methods

### `_onMessage`

> `Protected` **`_onMessage`**(`event`): `Promise`<`void`\>

Handle a message received on the BroadcastChannel

#### Parameters

| Name    | Type                                                                                    |
| :------ | :-------------------------------------------------------------------------------------- |
| `event` | `MessageEvent`<[`IDriveRequest`](../interfaces/jupyterlite_contents.IDriveRequest.md)\> |

#### Returns

`Promise`<`void`\>

#### Defined in

[packages/contents/src/broadcast.ts:56](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/contents/src/broadcast.ts#L56)

### `disable`

> **`disable`**(): `void`

#### Returns

`void`

#### Implementation of

IBroadcastChannelWrapper.disable

#### Defined in

[packages/contents/src/broadcast.ts:38](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/contents/src/broadcast.ts#L38)

### `dispose`

> **`dispose`**(): `void`

Clean up the broadcaster.

#### Returns

`void`

#### Implementation of

IBroadcastChannelWrapper.dispose

#### Defined in

[packages/contents/src/broadcast.ts:47](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/contents/src/broadcast.ts#L47)

### `enable`

> **`enable`**(): `void`

#### Returns

`void`

#### Implementation of

IBroadcastChannelWrapper.enable

#### Defined in

[packages/contents/src/broadcast.ts:28](https://github.com/jupyterlite/jupyterlite/blob/7971e0aa/packages/contents/src/broadcast.ts#L28)