Whether background blur is on.
Emits when the user toggles background blur.
The cameras in Devices.
Emits when the user closes the menu.
Emits when the user picks a device.
The microphones in Devices.
Whether the noise filter is on.
Emits when the user toggles the noise filter.
The selected camera's device id.
The selected microphone's device id.
The selected speaker's device id.
Show the background-blur toggle.
Show the noise-filter toggle.
The speakers in Devices.
Emits a pick of a device of the given kind.
mj-media-device-menu: lets the user pick a microphone, camera and speaker. Presentational: it emits DeviceSelected, and the host switches the device. A kind with no devices is left out.