RemoveChildAction

@blobs/sdk / actions/blob / RemoveChildAction

Defined in: actions/blob/RemoveChildAction.ts:43

Removes a child blob from its parent (sets parent_id to null). Undo restores the original parent_id.

Remarks

Use ActionManager.execute for managed flow — adds the action to a linear history stack so manager.undo() / manager.redo() find it without you keeping a reference, discards forward branches on a new execute, emits action:executing / action:completed events, and injects a pre-configured ActionContext. Calling action.execute(context) directly is also supported for one-shot use without history; see BaseAction for the full contract.

Examples

const action = createRemoveChildAction(payload);
await actionManager.execute(action);
await actionManager.undo();

const action = createRemoveChildAction(payload);
await action.execute({ blobsService: blobs.blobs });
await action.undo({ blobsService: blobs.blobs });

Extends

BaseAction<RemoveChildPayload, Blob, RemoveChildUndoState>

Constructors

Constructor

new RemoveChildAction(payload): RemoveChildAction

Defined in: actions/blob/RemoveChildAction.ts:56

Parameters

payload

RemoveChildPayload

Returns

RemoveChildAction

Overrides

BaseAction.constructor

Properties

id

readonly id: string

Defined in: actions/BaseAction.ts:74

Unique action identifier; assigned at construction time.

Inherited from

BaseAction.id

payload

readonly payload: RemoveChildPayload

Defined in: actions/BaseAction.ts:80

The original payload the action was constructed with.

Inherited from

BaseAction.payload

createdAt

readonly createdAt: number

Defined in: actions/BaseAction.ts:82

Wall-clock timestamp (ms) when the action was instantiated.

Inherited from

BaseAction.createdAt

canUndo

readonly canUndo: boolean

Defined in: actions/BaseAction.ts:84

Whether BaseAction.undo is allowed for this action.

Inherited from

BaseAction.canUndo

canRedo

readonly canRedo: boolean

Defined in: actions/BaseAction.ts:86

Whether BaseAction.redo is allowed after undo.

Inherited from

BaseAction.canRedo

status

status: ActionStatus = 'pending'

Defined in: actions/BaseAction.ts:89

Current lifecycle status; mutated by execute/undo/redo.

Inherited from

BaseAction.status

executedAt?

optional executedAt?: number

Defined in: actions/BaseAction.ts:91

Wall-clock timestamp (ms) when execute most recently completed.

Inherited from

BaseAction.executedAt

previousState?

optional previousState?: ActionState<RemoveChildUndoState>

Defined in: actions/BaseAction.ts:93

Captured pre-execution state used by undo.

Inherited from

BaseAction.previousState

result?

optional result?: ActionResult<Blob>

Defined in: actions/BaseAction.ts:95

Last result produced by execute/undo/redo.

Inherited from

BaseAction.result

type

readonly type: "blob:remove-child" = 'blob:remove-child'

Defined in: actions/blob/RemoveChildAction.ts:48

Action type tag (e.g. 'blob:delete'); set by subclasses.

Overrides

BaseAction.type

Accessors

description

Get Signature

get description(): string

Defined in: actions/blob/RemoveChildAction.ts:50

Human-readable description used in UI history listings.

Returns

string

Human-readable description used in UI history listings.

Overrides

BaseAction.description

Methods

execute()

execute(context): Promise<ActionResult<Blob>>

Defined in: actions/BaseAction.ts:123

Runs the action: validates first, captures undo state when applicable, then dispatches to the subclass-implemented doExecute. Catches exceptions and converts them into a failed ActionResult.

Parameters

context

ActionContext

Per-execution context.

Returns

Promise<ActionResult<Blob>>

The execution result.

Inherited from

BaseAction.execute

undo()

undo(context): Promise<ActionResult<Blob>>

Defined in: actions/BaseAction.ts:171

Reverses the action by delegating to the subclass doUndo with the captured undo state. Refuses to run unless the action previously completed (or was last redone) and undo state is available.

Parameters

context

ActionContext

Per-execution context.

Returns

Promise<ActionResult<Blob>>

The undo result.

Inherited from

BaseAction.undo

redo()

redo(context): Promise<ActionResult<Blob>>

Defined in: actions/BaseAction.ts:215

Re-applies a previously undone action. By default delegates to doExecute; subclasses can override doRedo for an optimized path that does not re-capture undo state.

Parameters

context

ActionContext

Per-execution context.

Returns

Promise<ActionResult<Blob>>

The redo result.

Inherited from

BaseAction.redo

doRedo()

protected doRedo(context): Promise<ActionResult<Blob>>

Defined in: actions/BaseAction.ts:292

Subclass hook performing the redo path. The default implementation re-runs doExecute; override when redo can be performed without recomputing state.