@express-document-sdk / Context

Class: Context

Contains the user's current selection state, indicating the content they are focused on.

Accessors

currentPage

• get currentPage(): PageNode

Returns

PageNode

The currently viewed page.

hasSelection

• get hasSelection(): boolean

Returns

boolean

false if the current editable selection does not contain any nodes, otherwise true.

insertionParent

• get insertionParent(): ContainerNode

Returns

ContainerNode

the preferred parent to insert newly added content into (i.e., the location content would get inserted if a user were to Paste or use the Shapes panel in the UI). This will vary depending on the user's current selection and other UI state.

selection

• get selection(): readonly Node[]

• set selection(nodes): void

Sets the current selection to an array of Node. Accepts a single node as a shortcut for a length-1 array [node] or undefined as a shortcut for [], which clears the selection.

Only node(s) that meet the following criteria can be selected:

Nodes must be within the current artboard (nodes outside the active artboard are filtered out).
A node cannot be selected if its ancestor is also selected (descendants are filtered out).
Locked nodes are filtered out (but will still be included in selectionIncludingNonEditable).

Parameters

• nodes: undefined | Node | readonly Node[]

Returns

readonly Node[]

the current selection. Nodes that are locked or otherwise non-editable are never included in the selection.

selectionIncludingNonEditable

• get selectionIncludingNonEditable(): readonly Node[]

Returns

readonly Node[]

the current selection and any locked nodes the user has attempted to select at the same time. This can happen for example if the user clicks on a locked node or if the user drags a selection marquee that overlaps locked nodes in addition to regular unlocked nodes.

Methods

off()

• off(eventName, handlerId): void

Unregisters handlers for editor events like selection change.

Parameters

• eventName: selectionChange

an editor event name.

• handlerId: string

a unique ID returned by editor.context.on API. Callback that was previously registered will be removed and will no more be invoked when the event occurs.

Returns

void

on()

• on(eventName, callback): string

Registers a handler for editor events such as selection change. The registered callback will be invoked when the specified event occurs. Note: Do not attempt to make changes to the document in response to a selection change callback because it may destabilize the application.