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HERE Maps API for JavaScript - API Reference

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HERE Maps API for JavaScript - API Reference: Class: Provider

Table of Contents

Class: Provider

new H.service.traffic.incidents.Provider (service, opt_refreshTime, opt_additionalParameters) Deprecated : since 3.1.41.0

This class represents a traffic incidents provider which requests traffic incident data from the platform traffic service and converts it to map objects.

Extends

Members

max number inherited

This property holds a value indicating the maximum zoom level at which the given provider can serve data. The value is set at construction time.

min number inherited

This property holds a value indicating the minimum zoom level at which the given provider can serve data. The value is set at construction time.

providesMarkers inherited

This method checks whether this provider will provide Marker map objects. A concrete implementation of Provider must override it if it will provide Markers.

tileSize number inherited

This property holds the size of a tile representing edge length in pixels. Its value must be 2^n where n is in range [0…30], default is 256.

uid string inherited

This property holds the unique identifier for the provider instance. The value is generated at construction time.

uri string inherited

This property holds the provider's unique resource identifier. If it is not provided at construction time, it defaults to provider's uid.

Methods

addEventListener (type, handler, opt_capture, opt_scope) inherited

This method adds a listener for a specific event.

Note that to prevent potential memory leaks, you must either call removeEventListener or dispose on the given object when you no longer need it.

addOnDisposeCallback (callback, opt_scope) inherited

This method adds a callback which is triggered when the EventTarget object is being disposed.

Name Type Description
callback function

The callback function.

opt_scope Object optional

An optional scope for the callback function

cancelTile (x, y, z) inherited

This method cancels a tile request, using the caller-supplied tile coordinates.

cancelTileByKey (tileKey) inherited

This method cancels a tile request, using a tile key.

Name Type Description
tileKey string

The key identifying the tile

createTileInternal (x, y, z, data, opt_options)H.map.provider.Tile inherited

The internal method to create a tile. It must be overridden by sub-classes.

Returns:
Type Description
H.map.provider.Tile The created tile

dispatchEvent (evt) inherited

This method dispatches an event on the EventTarget object.

Name Type Description
evt H.util.Event | string

An object representing the event or a string with the event name

dispose () inherited overrides

This method disposes listeners and resources from the given instance.

This method retrieves a tile cache of this provider.

Returns:
Type Description
H.util.ICache An object representing a tile cache

getCopyrights (boundingBox, level)Array.<!H.map.ICopyright> inherited

This method retrieves the copyrights for the provided content for a certain geographical area and zoom level.

Note: This function may be overridden by H.map.provider.Provider.Options getCopyrights property. The default implementation returns null.

Name Type Description
boundingBox H.geo.Rect

The rectangular area for which to retrieve the copyright information

level number

The zoom level for which to retrieve the copyright information

Returns:
Type Description
Array.<!H.map.ICopyright> A list of copyright information objects for the provided area and zoom level

getStyleInternal ()H.map.render.Style.<!Object> inherited

This methods returns the style used to render the provider data.

Returns:
Type Description
H.map.render.Style.<!Object>

getTileKey (x, y, z)string inherited

This method creates a tile key consisting of the provider's URI, and the x, y and z coordinates of the tile, separated by underscores, for example "4711_7_42_23".

Returns:
Type Description
string A string containing the tile key

invalidateObject (marker, flags) inherited

This method signals to the provider that a map object has changed. The method marks the tile that contains that object as invalid and triggers dispatchUpdate().

Name Type Description
marker H.map.AbstractMarker

The map object to be invalidated

flags H.math.BitMask.<!H.map.provider.Invalidations.Flag>

The flags indicating the types of occurred changes

providesDomMarkers ()boolean inherited

This method checks whether this provider will provide DomMarker map objects. A concrete implementation of Provider must override it if it will provide DomMarkers.

Returns:
Type Description
boolean A value indicating if the given provider provides DomMarkers (true) or not (false)

providesGeoJSON ()boolean inherited

This method checks whether this provider will provide data in GeoJSON format. A concrete implementation of Provider must override it if it will provide GeoJSON data.

Returns:
Type Description
boolean A value indicating if the given provider provides GeoJSON data (true) or not (false)

providesOMV ()boolean inherited

This method checks whether this provider will provide data in OMV format. A concrete implementation of Provider must override it if it will provide OMV data.

Returns:
Type Description
boolean A value indicating if the given provider provides OMV data (true) or not (false)

providesOverlays ()boolean inherited

This method checks whether this provider will provide overlay map objects. A concrete implementation of Provider must override it if it will provide overlays.

Returns:
Type Description
boolean true if the provider provides overlays, otherwise false

providesRasters ()boolean inherited

This method checks whether this provider will provide bitmap images as tiles. A concrete implementation of Provider must override it if it will provide raster tiles.

Returns:
Type Description
boolean A value indicating if the given provider provides raster tiles (true) or not (false)

providesSpatials ()boolean inherited

This method checks whether this provider will provide spatial map objects. A concrete implementation of Provider must override it if it will provide Spatials.

Returns:
Type Description
boolean A value indicating whether the provider provides map objects (true) or not (false)

reload (hard) inherited overrides

This method instructs the provider to reload data from its source.

Two reload modes are possible:

  • hard: This mode immediately removes tiles from the tile cache and forces the provider to re-fetch them. Currently cached tiles are not used for rendering.
  • soft: This mode only marks tiles as invalid and requests the tiles to be re-fetched as soon as possible. The provider does not invalidate the cache immediately. This means that cached tiles can still be rendered while the updated tiles are fetched.
Name Type Description
hard boolean

A Boolean flag indicating whether to invalidate in hard mode (true) or in soft mode (false);

removeEventListener (type, handler, opt_capture, opt_scope) inherited

This method removes a previously added listener from the EventTarget instance.

requestInternal (x, y, z, onResponse, onError, opt_priority)H.util.ICancelable inherited

To request a tile from a remote service. This method must be implemented by deriving classes.

Returns:
Type Description
H.util.ICancelable An object implementing ICancelable

requestTile (x, y, z, cacheOnly)H.map.provider.Tile | undefined inherited

This method requests data for a tile.

Returns:
Type Description
H.map.provider.Tile | undefined The tile object if it can be obtained, otherwise undefined

setStyleInternal (style, opt_suppressChangeEvent) inherited

This method sets the style to be used to render the provider data.

Name Type Description
style H.map.render.Style.<!Object>

The style to use for rendering the provider data.

opt_suppressChangeEvent boolean optional

Flag to suppress firing of config change event.

Events

update inherited

Event fired when this provider's data updates.

Type:
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