BasemapGallery

require(["esri/widgets/BasemapGallery"], function(BasemapGallery) { /* code goes here */ });
Class: esri/widgets/BasemapGallery
Inheritance: BasemapGallery Widget Accessor
Since: ArcGIS API for JavaScript 4.3

The BasemapGallery widget displays a collection images representing basemaps from ArcGIS.com or a user-defined set of map or image services. When a new basemap is selected from the BasemapGallery, the map's basemap layers are removed and replaced with the basemap layers of the associated basemap selected in the gallery. By default, the BasemapGallery widget looks like the following image.

basemap-gallery

Known Limitations

All basemaps added to the gallery need to have the same spatial reference.

For information about gaining full control of widget styles, see the Styling topic.
See also:
Example:
var basemapGallery = new BasemapGallery({
  view: view
});
// Add widget to the bottom left corner of the view
view.ui.add(basemapGallery, {
  position: "top-right"
});

Constructors

new BasemapGallery(properties)

Parameter:
properties Object
optional

See the properties for a list of all the properties that may be passed into the constructor.

Example:
// typical usage
var basemapGallery = new BasemapGallery({
  view: view
});

Property Overview

Any properties can be set, retrieved or listened to. See the Working with Properties topic.
NameTypeSummaryClass
Basemap

The map's basemap.

more details
more detailsBasemapGallery
String | HTMLElement

The ID or node representing the DOM element containing the widget.

more details
more detailsWidget
String

The name of the class.

more details
more detailsAccessor
Boolean

When true, this property indicates whether the widget has been destroyed.

more details
more detailsWidget
String

The unique ID assigned to the widget when the widget is created.

more details
more detailsWidget
LocalBasemapsSource | PortalBasemapsSource

The source for basemaps that the widget will display.

more details
more detailsBasemapGallery
MapView | SceneView

The view from which the widget will operate.

more details
more detailsBasemapGallery
BasemapGalleryViewModel

The view model for this widget.

more details
more detailsBasemapGallery

Property Details

activeBasemapBasemap

The map's basemap.

The ID or node representing the DOM element containing the widget. This property can only be set once.

declaredClassStringreadonly inherited

The name of the class. The declared class name is formatted as esri.folder.className.

When true, this property indicates whether the widget has been destroyed.

The unique ID assigned to the widget when the widget is created. If not set by the developer, it will default to the container ID, or if that is not present then it will be automatically generated.

The source for basemaps that the widget will display. This property can be autocast with an array or Collection of Basemaps, a Portal instance, or a URL to a portal instance. The default source is a PortalBasemapsSource that points to the default portal instance set in esriConfig.portalUrl.

The view from which the widget will operate. This view provides access to the active basemap via the view's map property.

The view model for this widget. This is a class that contains all the logic (properties and methods) that controls this widget's behavior. See the BasemapGalleryViewModel class to access all properties and methods on the widget.

Method Overview

NameReturn TypeSummaryClass

Destroys the widget instance.

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more detailsWidget

Emits an event on the instance.

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more detailsWidget
Boolean

Indicates whether there is an event listener on the instance that matches the provided event name.

more details
more detailsWidget
Object

Registers an event handler on the instance.

more details
more detailsWidget

Widget teardown helper.

more details
more detailsWidget

This method is primarily used by developers when implementing custom widgets.

more details
more detailsWidget
Object

This method is primarily used by developers when implementing custom widgets.

more details
more detailsWidget

Renders widget to the DOM immediately.

more details
more detailsWidget

This method is primarily used by developers when implementing custom widgets.

more details
more detailsWidget

Method Details

destroy()inherited

Destroys the widget instance.

emit(type, event)protectedinherited

Since: ArcGIS API for JavaScript 4.5

Emits an event on the instance. This method should only be used when creating subclasses that inherit from Evented.

Parameters:
type String

The name of the event.

event Object

The event payload.

hasEventListener(type){Boolean}inherited

Indicates whether there is an event listener on the instance that matches the provided event name.

Parameter:
type String

The name of the event.

Returns:
TypeDescription
BooleanReturns true if the class supports the input event.

on(type, listener){Object}inherited

Registers an event handler on the instance. Call this method to hook an event with a listener. See the Events summary table for a list of listened events.

Parameters:
type String

The name of event to listen for.

listener Function

The function to call when the event is fired.

Returns:
TypeDescription
ObjectReturns an event handler with a remove() method that can be called to stop listening for the event.
PropertyTypeDescription
removeFunctionWhen called, removes the listener from the event.
See also:
Example:
view.on("click", function(event){
  // event is the event handle returned after the event fires.
  console.log(event.mapPoint);
});

own(handles)inherited

Widget teardown helper. Any handles added to it will be automatically removed when the widget is destroyed.

Parameter:

Handles marked for removal once the widget is destroyed.

postInitialize()inherited

This method is primarily used by developers when implementing custom widgets. Executes after widget is ready for rendering.

render(){Object}inherited

This method is primarily used by developers when implementing custom widgets. It must be implemented by subclasses for rendering.

Returns:
TypeDescription
ObjectThe rendered virtual node.

renderNow()inherited

Renders widget to the DOM immediately.

scheduleRender()inherited

This method is primarily used by developers when implementing custom widgets. Schedules widget rendering. This method is useful for changes affecting the UI.

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