ExternalInfoService class abstract Places

Service helpers to request Wikipedia (External) information for landmarks.

ExternalInfoService provides methods to check the availability of Wikipedia data for a Landmark, to request the data and to cancel outstanding requests. Request methods are asynchronous and use callbacks to deliver results and errors.

See also:

• ExternalInfo — the data object returned when a request succeeds.

Constructors

ExternalInfoService()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

cancelWikiInfo(EventHandler operationHandler) → void

Cancel a previously started Wikipedia request.

hasWikiInfo(Landmark landmark) → bool

Checks whether Wikipedia information is available for landmark.

requestWikiInfo(Landmark landmark, {required void onComplete(GemError err, ExternalInfo? extraInfo)}) → EventHandler?

Requests Wikipedia information for landmark.