writeopia_ui/io.writeopia.ui.backstack/BackstackManager

BackstackManager

interface BackstackManager : BackstackInform

Manager for backstack. Implementations of this interface are responsible to coordinate undo and redo requests.

Types

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object Companion

Properties

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abstract val canRedo: StateFlow<Boolean>

Notifies if it is possible to redo an action.

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abstract val canUndo: StateFlow<Boolean>

Notifies if it is possible to undo an action.

Functions

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abstract fun addAction(action: BackstackAction)

Adds an action to the backstack.

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abstract fun nextState(state: StoryState): StoryState

Moves to the next state available. It is only possible to move the next state if the user has undone an action.

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abstract fun previousState(state: StoryState): StoryState

Moves to the previous state available.