AttachmentsViewModel

AMD: require(["esri/widgets/Attachments/AttachmentsViewModel"], (AttachmentsViewModel) => { /* code goes here */ });
ESM: import AttachmentsViewModel from "@arcgis/core/widgets/Attachments/AttachmentsViewModel.js";
Class: esri/widgets/Attachments/AttachmentsViewModel
Inheritance: AttachmentsViewModel Accessor
Since: ArcGIS Maps SDK for JavaScript 4.15

Provides the logic for the Attachments widget.

See also

Constructors

AttachmentsViewModel

Constructor
new AttachmentsViewModel(properties)
Parameter
properties Object
optional

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

Property Overview

Any properties can be set, retrieved or listened to. See the Working with Properties topic.
Show inherited properties Hide inherited properties
Name Type Summary Class

The current AttachmentInfo being edited.

AttachmentsViewModel

A collection of AttachmentInfo defined on a feature.

AttachmentsViewModel

Configures the attachment editing functionality that can be performed by the user.

AttachmentsViewModel

The name of the class.

Accessor

The graphic for the attachments.

AttachmentsViewModel

The current mode performed by the user.

AttachmentsViewModel

The current state of the widget.

AttachmentsViewModel

Defines whether or not the feature supports resizing attachments.

AttachmentsViewModel

Property Details

activeAttachmentInfo

Property
activeAttachmentInfo AttachmentInfo

The current AttachmentInfo being edited.

attachmentInfos

Property
attachmentInfos AttachmentInfo[]readonly

A collection of AttachmentInfo defined on a feature.

capabilities

Property
capabilities AttachmentsCapabilities
Since: ArcGIS Maps SDK for JavaScript 4.27 AttachmentsViewModel since 4.15, capabilities added at 4.27.

Configures the attachment editing functionality that can be performed by the user.

declaredClass

Inherited
Property
declaredClass Stringreadonly
Inherited from Accessor

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

graphic

Property
graphic Graphic

The graphic for the attachments.

mode

Property
mode String

The current mode performed by the user.

Possible Values:"view" |"add" |"edit"

Default Value:"view"

state

Property
state Stringreadonly

The current state of the widget.

Possible Values:"ready" |"disabled" |"loading"

Default Value:"ready"

supportsResizeAttachments

Property
supportsResizeAttachments Boolean

Defines whether or not the feature supports resizing attachments. This depends on whether the feature layer's capabilities.operations.supportsResizeAttachments is set to true.

Method Overview

Show inherited methods Hide inherited methods
Name Return Type Summary Class

Adds one or more handles which are to be tied to the lifecycle of the object.

Accessor

Queries for the attachments on a feature.

AttachmentsViewModel

Returns true if a named group of handles exist.

Accessor

Removes a group of handles owned by the object.

Accessor

Method Details

addHandles

Inherited
Method
addHandles(handleOrHandles, groupKey)
Inherited from Accessor
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
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.

getAttachments

Method
getAttachments(){Promise<AttachmentInfo[]>}

Queries for the attachments on a feature. Attachments for multiple features can be queried if the layer's capabilities.operations.supportsQueryAttachments is true.

Returns
Type Description
Promise<AttachmentInfo[]> When resolved, returns the AttachmentInfo of the queried feature.

hasHandles

Inherited
Method
hasHandles(groupKey){Boolean}
Inherited from Accessor
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)
Inherited from Accessor
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");

Type Definitions

AttachmentsCapabilities

Type Definition
AttachmentsCapabilities

An object that specifies the available attachments capabilities.

Properties
editing Boolean
optional

Indicates whether to allow attachment editing. The feature layer must be enabled to support editing. Default value is false.

operations Object[]
optional

Describes the configurable attachments operations. See the object specification below.

Specification
add Boolean
optional

Indicates whether to allow adding attachments. Default value is true.

update Boolean
optional

Indicates whether to allow updating an existing attachment. Default value is true.

delete Boolean
optional

Indicates whether to allow deleting an existing attachment. Default value is true.

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