Interface IFetchableSource

Namespace: Mapsui.Fetcher

Assembly: Mapsui.dll

Syntax

public interface IFetchableSource

Properties

Id

The layer identifier.

Declaration

int Id { get; }

Property Value

Type	Description
int

Methods

ClearCache()

Clears the cache of this layer. Call this if source data has was invalidated or the layer is removed.

Declaration

void ClearCache()

GetFetchJobs(int, int)

Gets the fetch requests for this layer. The requests are based on the viewport stored within the layer.

Declaration

FetchJob[] GetFetchJobs(int activeFetchCount, int availableFetchSlots)

Parameters

Type	Name	Description
int	activeFetchCount	Number of active fetches for this layer. It is relevant if the layer itself has a maximum on the number of active fetches for itself.
int	availableFetchSlots	Number of available fetch slots in the caller. It is the maximum number of fetch jobs the method should return.

Returns

Type	Description
FetchJob[]

ViewportChanged(FetchInfo)

Informs the layer that the viewport has changed and it should update its data accordingly.

Declaration

void ViewportChanged(FetchInfo fetchInfo)

Parameters

Type	Name	Description
FetchInfo	fetchInfo

Events

FetchRequested

Indicates to the listener that it should fetch data again. This event is raised when there was a change in source data, so only relevant for dynamic data. The fetches triggered by viewport changes do not depend on it.

Declaration

event EventHandler<FetchRequestedEventArgs>? FetchRequested

Event Type

Type	Description
EventHandler<FetchRequestedEventArgs>

Extension Methods

DisposableExtension.DisposeIfDisposable(object?)