ESM: import Attribution from "@arcgis/core/widgets/Attribution.js";
CDN: const Attribution = await $arcgis.import("@arcgis/core/widgets/Attribution.js");
Class: @arcgis/core/widgets/Attribution
Since: ArcGIS Maps SDK for JavaScript 4.0
The Attribution widget displays attribution text for the layers in a map. The text displayed for the layers is either a list of data providers or sources as defined in the layer's custom attribution data, or the copyright text. This widget automatically updates based on layer visibility and map extent and displays a single line of attribution that can be expanded with a single click to view all data sources.
The attribution text displayed depends on how the layers are added to the map. If the layer is added by:
An instance of the Attribution widget is available in every MapView and SceneView by default. See DefaultUI for more details.
Esri requires that when you use an ArcGIS Online basemap in your app, the map must include Esri attribution and you must be licensed to use the content. For detailed guidelines on working with attribution, please visit the official attribution in your app documentation. For information on terms of use, see the Terms of Use FAQ.
new Attribution(properties)
Parameter
optionalSee the properties for a list of all the properties that may be passed into the constructor.
Show inherited properties Hide inherited properties
Property Details attributionText Stringreadonly
Full attribution text.
The ID or node representing the DOM element containing the widget. This property can only be set once. The following examples are all valid use case when working with widgets.
Examples
// Create the HTML div element programmatically at runtime and set to the widget's container
const basemapGallery = new BasemapGallery({
view: view,
container: document.createElement("div")
});
// Add the widget to the top-right corner of the view
view.ui.add(basemapGallery, {
position: "top-right"
});
// Specify an already-defined HTML div element in the widget's container
const basemapGallery = new BasemapGallery({
view: view,
container: basemapGalleryDiv
});
// Add the widget to the top-right corner of the view
view.ui.add(basemapGallery, {
position: "top-right"
});
// HTML markup
<body>
<div id="viewDiv"></div>
<div id="basemapGalleryDiv"></div>
</body>
// Specify the widget while adding to the view's UI
const basemapGallery = new BasemapGallery({
view: view
});
// Add the widget to the top-right corner of the view
view.ui.add(basemapGallery, {
position: "top-right"
});
Inherited
Property declaredClass Stringreadonly
Since: ArcGIS Maps SDK for JavaScript 4.7 Accessor since 4.0, declaredClass added at 4.7.
The name of the class. The declared class name is formatted as esri.folder.className
.
Since: ArcGIS Maps SDK for JavaScript 4.27 Attribution since 4.0, icon added at 4.27.
Icon which represents the widget. It is typically used when the widget is controlled by another one (e.g. in the Expand widget).
Inherited
Property id String
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.
itemDelimiter String
Text used to split attribution by layers
Since: ArcGIS Maps SDK for JavaScript 4.7 Attribution since 4.0, label added at 4.7.
The widget's default label.
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 AttributionViewModel class to access all properties and methods on the widget.
Inherited
Property visible Boolean
Indicates whether the widget is visible.
If false
, the widget will no longer be rendered in the web document. This may affect the layout of other elements or widgets in the document. For example, if this widget is the first of three widgets associated to the upper right hand corner of the view UI, then the other widgets will reposition when this widget is made invisible. For more information, refer to the css display value of "none"
.
Example
// Hides the widget in the view
widget.visible = false;
Show inherited methods Hide inherited methods
Method DetailsInherited
Method addHandles(handleOrHandles, groupKey)
Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, addHandles added at 4.25.
Adds one or more handles which are to be tied to the lifecycle of the object. The handles will be removed when the object is destroyed.
// Manually manage handles
const handle = reactiveUtils.when(
() => !view.updating,
() => {
wkidSelect.disabled = false;
},
{ once: true }
);
this.addHandles(handle);
// Destroy the object
this.destroy();
Parameters
Handles marked for removal once the object is destroyed.
groupKey *
optionalKey identifying the group to which the handles should be added. All the handles in the group can later be removed with Accessor.removeHandles(). If no key is provided the handles are added to a default group.
Inherited
Method classes(classNames){String}
Since: ArcGIS Maps SDK for JavaScript 4.7 Widget since 4.2, classes added at 4.7.
A utility method used for building the value for a widget's class
property. This aids in simplifying css class setup.
Returns
Type Description String The computed class name.Example
// .tsx syntax showing how to set css classes while rendering the widget
render() {
const dynamicClasses = {
[css.flip]: this.flip,
[css.primary]: this.primary
};
return (
<div class={classes(css.root, css.mixin, dynamicClasses)} />
);
}
Inherited
Method destroy()
Destroys the widget instance.
Inherited
Method emit(type, event){Boolean}
Since: ArcGIS Maps SDK for JavaScript 4.5 Widget since 4.2, emit added at 4.5.
Emits an event on the instance. This method should only be used when creating subclasses of this class.
Parameters
The name of the event.
optionalThe event payload.
Returns
Type Description Booleantrue
if a listener was notified
Inherited
Method hasEventListener(type){Boolean}
Indicates whether there is an event listener on the instance that matches the provided event name.
Returns
Type Description Boolean Returns true if the class supports the input event.Inherited
Method hasHandles(groupKey){Boolean}
Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, hasHandles added at 4.25.
Returns true if a named group of handles exist.
Parameter
groupKey *
optionalA group key.
Returns
Type Description Boolean Returnstrue
if a named group of handles exist.
Example
// Remove a named group of handles if they exist.
if (obj.hasHandles("watch-view-updates")) {
obj.removeHandles("watch-view-updates");
}
Inherited
Method isFulfilled(){Boolean}
Since: ArcGIS Maps SDK for JavaScript 4.19 Widget since 4.2, isFulfilled added at 4.19.
isFulfilled()
may be used to verify if creating an instance of the class is fulfilled (either resolved or rejected). If it is fulfilled, true
will be returned.
Returns
Type Description Boolean Indicates whether creating an instance of the class has been fulfilled (either resolved or rejected).Inherited
Method isRejected(){Boolean}
Since: ArcGIS Maps SDK for JavaScript 4.19 Widget since 4.2, isRejected added at 4.19.
isRejected()
may be used to verify if creating an instance of the class is rejected. If it is rejected, true
will be returned.
Returns
Type Description Boolean Indicates whether creating an instance of the class has been rejected.Inherited
Method isResolved(){Boolean}
Since: ArcGIS Maps SDK for JavaScript 4.19 Widget since 4.2, isResolved added at 4.19.
isResolved()
may be used to verify if creating an instance of the class is resolved. If it is resolved, true
will be returned.
Returns
Type Description Boolean Indicates whether creating an instance of the class has been resolved.Inherited
Method on(type, listener){Object}
Registers an event handler on the instance. Call this method to hook an event with a listener.
Returns
Type Description Object Returns an event handler with aremove()
method that should be called to stop listening for the event(s). Property Type Description remove Function When called, removes the listener from the event.
Example
view.on("click", function(event){
// event is the event handle returned after the event fires.
console.log(event.mapPoint);
});
Inherited
Method postInitialize()
Executes after widget is ready for rendering.
Inherited
Method removeHandles(groupKey)
Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, removeHandles added at 4.25.
Removes a group of handles owned by the object.
Parameter
groupKey *
optionalA group key or an array or collection of group keys to remove.
Example
obj.removeHandles(); // removes handles from default group
obj.removeHandles("handle-group");
obj.removeHandles("other-handle-group");
Inherited
Method render(){Object}
This method is implemented by subclasses for rendering.
Returns
Type Description Object The rendered virtual node.Inherited
Method renderNow()
Renders widget to the DOM immediately.
Inherited
Method scheduleRender()
Schedules widget rendering. This method is useful for changes affecting the UI.
Inherited
Method when(callback, errback){Promise}
Since: ArcGIS Maps SDK for JavaScript 4.19 Widget since 4.2, when added at 4.19.
when()
may be leveraged once an instance of the class is created. This method takes two input parameters: a callback
function and an errback
function. The callback
executes when the instance of the class loads. The errback
executes if the instance of the class fails to load.
Parameters
optionalThe function to call when the promise resolves.
optionalThe function to execute when the promise fails.
Returns
Type Description Promise Returns a new Promise for the result ofcallback
.
Example
// Although this example uses the BasemapGallery widget, any class instance that is a promise may use when() in the same way
let bmGallery = new BasemapGallery();
bmGallery.when(function(){
// This function will execute once the promise is resolved
}, function(error){
// This function will execute if the promise is rejected due to an error
});
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