DimensionLayerView

// create new layer and add it to the scene view
const dimensionLayer = new DimensionLayer();
view.map.add(dimensionLayer);
// retrieve layer view for the layer
view.whenLayerView(dimensionLayer).then(dimensionLayerView => {
   // allow existing dimensions in the layer to be edited by selecting them
   dimensionLayerView.interactive = true;
   // start adding new dimensions interactively
   dimensionLayerView.createLengthDimensions();
});

// retrieve measured results from the layer view
view.whenLayerView(dimensionLayer).then(dimensionLayerView => {
   const results = dimensionLayerView.results;
});

Property Overview

Property Details

declaredClass Stringreadonly inherited

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

interactive Boolean

Set to true to enable interactivity for the layer. If the layer's source includes any dimensions, they become selectable and editable.

Default Value:false

layer DimensionLayerreadonly

The layer being viewed.

results Collection<LengthDimensionResult>readonly

Results for each dimension in the layer source.

Given a dimension object, the results collection can be searched:

const result = dimensionLayerView.results.find((result) => result.dimension === dimensionObject);

selectedDimension LengthDimension

The selected dimension. If interactive is true, any dimension in the layer can be selected by clicking on it in the view. As long as interactive remains true, the properties of the selected dimension can be edited by interacting with manipulators in the view.

suspended Booleanreadonly

Value is true if the layer is suspended (i.e., layer will not redraw or update itself when the extent changes).

updating Booleanreadonly inherited

Value is true when the layer is updating; for example, if it is in the process of fetching data.

Default Value:false

visible Boolean inherited

When true, the layer is visible in the view. Value of this property is inherited from the layer.visible unless the developer overrides it. The layerView.visible will take precedence over layer.visible if both properties are set.

Default Value:true

Method Overview

Method Details

addHandles(handleOrHandles, groupKey)inherited

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 }
);

// Handle gets removed when the object is destroyed.
this.addHandles(handle);

Parameters

handleOrHandles WatchHandle|WatchHandle[] 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.

createLengthDimensions(options){Promise}

Starts the interactive creation of new dimensions and adds them to the layer source.

The creation process will finish when the user double-clicks the mouse or presses the escape key. In order to otherwise stop the creation process, pass an abort signal as an argument when calling the method.

let abortController;
view.whenLayerView(dimensionLayer).then(dimensionLayerView => {
   // create a new controller
   abortController = new AbortController();
   // pass the controller as an argument to the interactive creation method
   dimensionLayerView.createLengthDimensions(abortController);
   // abort the controller to stop the creation process
   abortController.abort();
});

Calling this method sets interactive to true.

Parameters

options Object optional An object specifying additional options. Specification signal AbortSignal optional Abort signal which can be used to cancel creation.

Returns

Type	Description
Promise	A promise which resolves when creation is completed, or rejects if creation is cancelled.

hasHandles(groupKey){Boolean}inherited

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");
}

isFulfilled(){Boolean}inherited

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).

isRejected(){Boolean}inherited

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.

isResolved(){Boolean}inherited

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.

removeHandles(groupKey)inherited

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");

when(callback, errback){Promise}inherited

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

callback Function optional The function to call when the promise resolves.

errback Function optional The function to execute when the promise fails.

Returns

Type	Description
Promise	Returns a new promise for the result of callback that may be used to chain additional functions.

Example

// Although this example uses MapView, any class instance that is a promise may use when() in the same way
let view = new MapView();
view.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
});