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Showing content from https://developers.arcgis.com/javascript/latest/api-reference/esri-views-Theme.html below:

Theme | API Reference | ArcGIS Maps SDK for JavaScript 4.33

ESM: import Theme from "@arcgis/core/views/Theme.js";

CDN: const Theme = await $arcgis.import("@arcgis/core/views/Theme.js");

Class: @arcgis/core/views/Theme

Since: ArcGIS Maps SDK for JavaScript 4.28

This class is used by the View to define the base colors used by widgets and components to render temporary graphics and labels. It is important to note that the colors defined in this class are merely base colors. Widgets and components may create derived colors with varying opacity and contrast, and each widget and tool will display the theme colors in different ways.

The theme can be defined to complement an application's design or to contrast a map's content. For example, defining a purple accentColor will allow the user to clearly see measurement graphics on a red-orange colored basemap. Or defining a light textColor would display best against a dark background. Typically, theme colors are reactive and can be updated on-the-fly.

Currently, the following widgets and components honor this property. Note that the widgets available depends on if you are working in a 2D MapView or 3D SceneView: AreaMeasurement2D, dimensioning, AreaMeasurement3D, DirectLineMeasurement3D, DistanceMeasurement2D, draw tools, Editor, ElevationProfile, LineOfSight, Sketch, Slice, and snapping.

See also

• View.theme
• Color

• Sample - Color theming for interactive tools

Example

// Update the theme to use purple graphics
// and slightly transparent green text
view.theme = new Theme({
  accentColor: "purple",
  textColor: [125, 255, 13, 0.9]
});

Theme Constructor new Theme(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

The base color used to render temporary graphics in the View.

declaredClass

Inherited

Property declaredClass Stringreadonly

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

The base color used to render temporary labels in the View.

Show inherited methods Hide inherited methods

addHandles

Inherited

Method addHandles(handleOrHandles, groupKey)

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}

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)

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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