The NgDiagramSelectionService provides methods for managing the selection state of nodes and edges in the diagram.

Example usage

private selectionService = inject(NgDiagramSelectionService);

// Select nodes and edges
this.selectionService.select(['nodeId1'], ['edgeId1']);

Extends

• NgDiagramBaseService

Properties

selection

selection: Signal<{ edges: Edge<object>[]; nodes: Node[]; }>

Returns a computed signal for the current selection of nodes and edges.

Methods

deleteSelection()

deleteSelection(): Promise<void>

Deletes the current selection of nodes and edges.

Returns

Promise<void>

A promise that resolves once the change has been applied to the model. Inside a transaction, the promise resolves right away and the change is applied when the transaction commits.

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deselect()

deselect(nodeIds, edgeIds): Promise<void>

Deselects nodes and edges by their IDs.

Parameters

nodeIds

string[] = []

Array of node IDs to deselect.

edgeIds

string[] = []

Array of edge IDs to deselect.

Returns

Promise<void>

A promise that resolves once the change has been applied to the model. Inside a transaction, the promise resolves right away and the change is applied when the transaction commits.

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deselectAll()

deselectAll(): Promise<void>

Deselects all currently selected nodes and edges.

Returns

Promise<void>

A promise that resolves once the change has been applied to the model. Inside a transaction, the promise resolves right away and the change is applied when the transaction commits.

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select()

select(nodeIds, edgeIds): Promise<void>

Selects nodes and edges by their IDs.

Parameters

nodeIds

string[] = []

Array of node IDs to select.

edgeIds

string[] = []

Array of edge IDs to select.

Returns

Promise<void>

A promise that resolves once the change has been applied to the model. Inside a transaction, the promise resolves right away and the change is applied when the transaction commits.