mosaic-client/dev.catbit.mosaic.client.ui.sdui.foundation.data_holder/DefaultScreenDataHolder

DefaultScreenDataHolder

class DefaultScreenDataHolder(navigationData: Map<String, Any>) : ScreenDataHolder

Default, purely in-memory ScreenDataHolder implementation — one instance per screen, built by MosaicModules.stateHolder's viewModel factory and handed navigationData at construction time (the arguments the screen was navigated to with, if any). Like DefaultApplicationDataHolder, it's two plain mutable maps with no persistence.

Parameters

navigationData

the arguments this screen instance was opened with — what getNavigationData/ getAllNavigationData read from. Immutable for the screen's whole lifetime.

Constructors

DefaultScreenDataHolder

constructor(navigationData: Map<String, Any>)

Functions

addPlainData

open override fun addPlainData(data: Any?, dataId: String)

Writes data under dataId in this screen's flat store, overwriting any existing value. The mechanism behind UpdateData targeting screenPlainData().

addSegmentedData

open override fun addSegmentedData(data: Any?, segmentId: String, dataId: String)

Writes data under dataId within this screen's segmentId namespace, overwriting any existing value. The mechanism behind UpdateData targeting screenSegmentedData(segmentId).

getAllNavigationData

open override fun getAllNavigationData(): Map<String, Any>

Every navigation argument this screen was opened with.

getAllPlainData

open override fun getAllPlainData(): Map<String, Any?>

Every flat entry currently stored on this screen, keyed by data id.

getAllSegmentedData

open override fun getAllSegmentedData(segmentId: String): Map<String, Any?>?

Every entry currently stored within segmentId, keyed by data id.

getNavigationData

open override fun getNavigationData(dataId: String): Any?

Reads the navigation argument dataId this screen was opened with — read-only, there is no add/remove counterpart, since navigation arguments are fixed for the lifetime of a screen instance. The mechanism behind GetData's screenNavigationData() data source.