# 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:15](https://github.com/jupyterlite/jupyterlite/blob/6de9813/packages/contents/src/broadcast.ts#L15)

## Properties

### `_channel`

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

#### Defined in

[packages/contents/src/broadcast.ts:73](https://github.com/jupyterlite/jupyterlite/blob/6de9813/packages/contents/src/broadcast.ts#L73)



### `_contents`

>
> `Protected` **`_contents`**: `IManager`

#### Defined in

[packages/contents/src/broadcast.ts:74](https://github.com/jupyterlite/jupyterlite/blob/6de9813/packages/contents/src/broadcast.ts#L74)



### `_driveContentsProcessor`

>
> `Protected` **`_driveContentsProcessor`**: [`IDriveContentsProcessor`](../interfaces/jupyterlite_contents.IDriveContentsProcessor.md)

#### Defined in

[packages/contents/src/broadcast.ts:75](https://github.com/jupyterlite/jupyterlite/blob/6de9813/packages/contents/src/broadcast.ts#L75)



### `_enabled`

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

#### Defined in

[packages/contents/src/broadcast.ts:76](https://github.com/jupyterlite/jupyterlite/blob/6de9813/packages/contents/src/broadcast.ts#L76)



### `isDisposed`

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

#### Implementation of

IBroadcastChannelWrapper.isDisposed

#### Defined in

[packages/contents/src/broadcast.ts:13](https://github.com/jupyterlite/jupyterlite/blob/6de9813/packages/contents/src/broadcast.ts#L13)

## Accessors

### `enabled`

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

#### Returns

`boolean`

#### Implementation of

IBroadcastChannelWrapper.enabled

#### Defined in

[packages/contents/src/broadcast.ts:22](https://github.com/jupyterlite/jupyterlite/blob/6de9813/packages/contents/src/broadcast.ts#L22)

## Methods

### `_onMessage`

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

Handle a message received on the BroadcastChannel

#### Type parameters

| Name | Type |
| :------ | :------ |
| `T` | extends [`TDriveMethod`](../modules/jupyterlite_contents.md#tdrivemethod) |

#### Parameters

| Name | Type |
| :------ | :------ |
| `event` | `MessageEvent`<[`TDriveRequest`](../modules/jupyterlite_contents.md#tdriverequest)<`T`\>\> |

#### Returns

`Promise`<`void`\>

#### Defined in

[packages/contents/src/broadcast.ts:54](https://github.com/jupyterlite/jupyterlite/blob/6de9813/packages/contents/src/broadcast.ts#L54)



### `disable`

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

#### Returns

`void`

#### Implementation of

IBroadcastChannelWrapper.disable

#### Defined in

[packages/contents/src/broadcast.ts:36](https://github.com/jupyterlite/jupyterlite/blob/6de9813/packages/contents/src/broadcast.ts#L36)



### `dispose`

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

Clean up the broadcaster.

#### Returns

`void`

#### Implementation of

IBroadcastChannelWrapper.dispose

#### Defined in

[packages/contents/src/broadcast.ts:45](https://github.com/jupyterlite/jupyterlite/blob/6de9813/packages/contents/src/broadcast.ts#L45)



### `enable`

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

#### Returns

`void`

#### Implementation of

IBroadcastChannelWrapper.enable

#### Defined in

[packages/contents/src/broadcast.ts:26](https://github.com/jupyterlite/jupyterlite/blob/6de9813/packages/contents/src/broadcast.ts#L26)