Widget Functionality

What it does

Shows the current observing state for a selected device or subsystem and optionally exposes a control to trigger a Tango command.

Expected data

Device name for which to display the state.

GraphQL operations

Stream (subscription): see src/graphql/stream.ts for the live state feed.
Polling (query): see src/graphql/polling.ts for one-shot state snapshots.
Mutation (command): see src/graphql/mutation.ts for sending a Tango command with command, device, and argin.

Notes:

Depending on dashboard settings, the widget may run in polling-only mode.