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Showing content from https://developers.arcgis.com/javascript/latest/api-reference/esri-rest-support-LegendLayer.html below:

LegendLayer | API Reference | ArcGIS Maps SDK for JavaScript 4.33

ESM: import LegendLayer from "@arcgis/core/rest/support/LegendLayer.js";

CDN: const LegendLayer = await $arcgis.import("@arcgis/core/rest/support/LegendLayer.js");

Class: @arcgis/core/rest/support/LegendLayer

Since: ArcGIS Maps SDK for JavaScript 4.20

Define layer properties for the legend layers associated with a PrintTemplate.

LegendLayer Constructor new LegendLayer(properties)

Parameter

optional

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

Show inherited properties Hide inherited properties

declaredClass

Inherited

Property declaredClass Stringreadonly

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

layerId Property layerId String

The id of the operational layer to include in the printout's legend.

subLayerIds Property subLayerIds String[]

The ids of the sublayers to include in the printout's legend.

The title of the feature layer. Use this property to modify feature layer name in the legend for the printout.

Show inherited methods Hide inherited methods

addHandles

Inherited

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 *

optional

Key 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.

hasHandles

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 *

optional

A group key.

Returns

Type Description Boolean Returns true 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");
}

removeHandles

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 *

optional

A 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");

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