History

The History controller is in charge of allowing navigating back and forward in the search interface history.

Methods

back

Move backward in the interface history.

Returns Promise<void>: A promise that resolves when the previous state has been restored.

forward

Move forward in the interface history.

Returns Promise<void>: A promise that resolves when the next state has been restored.

subscribe

Adds a callback that will be called on state change.

Parameters

  • listener: () ⇒ void

    A callback to be invoked on state change.

Returns Unsubscribe: An unsubscribe function to remove the listener.

Attributes

state

The state relevant to the History controller.

Initialize

buildHistory

Creates a History controller instance.

Parameters

  • engine: Engine

    The headless engine.

Returns History

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Call signatures

  • (): void

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