IIntervalCollectionEvent Interface

Packages > fluid-framework > IIntervalCollectionEvent

Change events emitted by IntervalCollections

Signature

export interface IIntervalCollectionEvent<TInterval extends ISerializableInterval> extends IEvent

Extends: IEvent

Type Parameters

Call Signatures

Call Signature Details

(event: “changeInterval”, listener: (interval: TInterval, previousInterval: TInterval, local: boolean, op: ISequencedDocumentMessage | undefined, slide: boolean) => void): void

This event is invoked whenever the endpoints of an interval may have changed. This can happen on: - local endpoint modification - ack of a remote endpoint modification - position change due to segment sliding (slides due to mergeTree segment deletion will always appear local) The interval argument reflects the new values. previousInterval contains transient ReferencePositions at the same location as the interval’s original endpoints. These references should be used for position information only. local reflects whether the change originated locally. op is defined if and only if the server has acked this change. slide is true if the change is due to sliding on removal of position

Signature

(event: "changeInterval", listener: (interval: TInterval, previousInterval: TInterval, local: boolean, op: ISequencedDocumentMessage | undefined, slide: boolean) => void): void;

(event: “addInterval” | “deleteInterval”, listener: (interval: TInterval, local: boolean, op: ISequencedDocumentMessage | undefined) => void): void

This event is invoked whenever an interval is added or removed from the collection. local reflects whether the change originated locally. op is defined if and only if the server has acked this change.

Signature

(event: "addInterval" | "deleteInterval", listener: (interval: TInterval, local: boolean, op: ISequencedDocumentMessage | undefined) => void): void;

(event: “propertyChanged”, listener: (interval: TInterval, propertyDeltas: PropertySet, local: boolean, op: ISequencedDocumentMessage | undefined) => void): void

This event is invoked whenever an interval’s properties have changed. interval reflects the state of the updated properties. propertyDeltas is a map-like whose keys contain all values that were changed, and whose values contain all previous values of the property set. This object can be used directly in a call to changeProperties to revert the property change if desired. local reflects whether the change originated locally. op is defined if and only if the server has acked this change.

Signature

(event: "propertyChanged", listener: (interval: TInterval, propertyDeltas: PropertySet, local: boolean, op: ISequencedDocumentMessage | undefined) => void): void;

(event: “changed”, listener: (interval: TInterval, propertyDeltas: PropertySet, previousInterval: TInterval | undefined, local: boolean, slide: boolean) => void): void

This event is invoked whenever an interval’s endpoints or properties (or both) have changed. interval reflects the state of the updated endpoints or properties. propertyDeltas is a map-like whose keys contain all values that were changed, and whose values contain all previous values of the property set. This object can be used directly in a call to changeProperties to revert the property change if desired. ‘previousInterval’ contains transient ReferencePositions at the same location as the interval’s original endpoints. These references should be used for position information only. In the case of a property change only, this argument should be undefined. local reflects whether the change originated locally. slide is true if the change is due to sliding on removal of position.

Signature

(event: "changed", listener: (interval: TInterval, propertyDeltas: PropertySet, previousInterval: TInterval | undefined, local: boolean, slide: boolean) => void): void;