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BlockSuite API Documentation / @blocksuite/store / Y / UndoManager

Class: UndoManager ​

Fires 'stack-item-added' event when a stack item was added to either the undo- or the redo-stack. You may store additional stack information via the metadata property on event.stackItem.meta (it is a Map of metadata properties). Fires 'stack-item-popped' event when a stack item was popped from either the undo- or the redo-stack. You may restore the saved stack information from event.stackItem.meta.

Contents ​

Extends ​

  • Observable<"stack-item-added" | "stack-item-popped" | "stack-cleared" | "stack-item-updated">

Constructors ​

new UndoManager(typeScope, options) ​

new UndoManager(typeScope, options?): UndoManager

Parameters ​

• typeScope: AbstractType<any> | AbstractType<any>[]

Accepts either a single type, or an array of types

• options?: UndoManagerOptions

Returns ​

UndoManager

Overrides ​

Observable<"stack-item-added" | "stack-item-popped" | "stack-cleared" | "stack-item-updated">.constructor

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:40

Properties ​

_observers ​

_observers: Map<"stack-item-added" | "stack-item-popped" | "stack-cleared" | "stack-item-updated", any>

Some desc.

Inherited from ​

Observable._observers

Source ​

node_modules/.pnpm/lib0@0.2.88/node_modules/lib0/observable.d.ts:58

afterTransactionHandler ​

afterTransactionHandler: (transaction) => void

Parameters ​

• transaction: Transaction

Returns ​

void

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:70

captureTimeout ​

captureTimeout: number

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:66

captureTransaction ​

captureTransaction: (arg0) => boolean

Parameters ​

• arg0: Transaction

Returns ​

boolean

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:48

deleteFilter ​

deleteFilter: (arg0) => boolean

Parameters ​

• arg0: Item

Returns ​

boolean

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:46

doc ​

doc: Doc

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:45

ignoreRemoteMapChanges ​

ignoreRemoteMapChanges: boolean

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:65

lastChange ​

lastChange: number

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:64

redoStack ​

redoStack: StackItem[]

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:56

redoing ​

redoing: boolean

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:63

scope ​

scope: AbstractType<any>[]

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:44

trackedOrigins ​

trackedOrigins: Set<any>

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:47

undoStack ​

undoStack: StackItem[]

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:52

undoing ​

undoing: boolean

Whether the client is currently undoing (calling UndoManager.undo)

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:62

Methods ​

addToScope() ​

addToScope(ytypes): void

Parameters ​

• ytypes: AbstractType<any> | AbstractType<any>[]

Returns ​

void

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:74

addTrackedOrigin() ​

addTrackedOrigin(origin): void

Parameters ​

• origin: any

Returns ​

void

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:78

canRedo() ​

canRedo(): boolean

Are redo steps available?

Returns ​

boolean

true if redo is possible

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:128

canUndo() ​

canUndo(): boolean

Are undo steps available?

Returns ​

boolean

true if undo is possible

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:122

clear() ​

clear(clearUndoStack?, clearRedoStack?): void

Parameters ​

• clearUndoStack?: boolean

• clearRedoStack?: boolean

Returns ​

void

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:83

destroy() ​

destroy(): void

Returns ​

void

Inherited from ​

Observable.destroy

Source ​

node_modules/.pnpm/lib0@0.2.88/node_modules/lib0/observable.d.ts:84

emit() ​

emit(name, args): void

Emit a named event. All registered event listeners that listen to the specified name will receive the event.

Parameters ​

• name: "stack-item-added" | "stack-item-popped" | "stack-cleared" | "stack-item-updated"

The event name.

• args: any[]

The arguments that are applied to the event listener.

Returns ​

void

Inherited from ​

Observable.emit

Todo ​

This should catch exceptions

Source ​

node_modules/.pnpm/lib0@0.2.88/node_modules/lib0/observable.d.ts:83

off() ​

off(name, f): void

Parameters ​

• name: "stack-item-added" | "stack-item-popped" | "stack-cleared" | "stack-item-updated"

• f: Function

Returns ​

void

Inherited from ​

Observable.off

Source ​

node_modules/.pnpm/lib0@0.2.88/node_modules/lib0/observable.d.ts:73

on() ​

on(name, f): void

Parameters ​

• name: "stack-item-added" | "stack-item-popped" | "stack-cleared" | "stack-item-updated"

• f: Function

Returns ​

void

Inherited from ​

Observable.on

Source ​

node_modules/.pnpm/lib0@0.2.88/node_modules/lib0/observable.d.ts:63

once() ​

once(name, f): void

Parameters ​

• name: "stack-item-added" | "stack-item-popped" | "stack-cleared" | "stack-item-updated"

• f: Function

Returns ​

void

Inherited from ​

Observable.once

Source ​

node_modules/.pnpm/lib0@0.2.88/node_modules/lib0/observable.d.ts:68

redo() ​

redo(): null | StackItem

Redo last undo operation.

Returns ​

null | StackItem

Returns StackItem if a change was applied

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:116

removeTrackedOrigin() ​

removeTrackedOrigin(origin): void

Parameters ​

• origin: any

Returns ​

void

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:82

stopCapturing() ​

stopCapturing(): void

UndoManager merges Undo-StackItem if they are created within time-gap smaller than options.captureTimeout. Call um.stopCapturing() so that the next StackItem won't be merged.

Returns ​

void

Example ​

ts
// without stopCapturing
    ytext.insert(0, 'a')
    ytext.insert(1, 'b')
    um.undo()
    ytext.toString() // => '' (note that 'ab' was removed)
    // with stopCapturing
    ytext.insert(0, 'a')
    um.stopCapturing()
    ytext.insert(0, 'b')
    um.undo()
    ytext.toString() // => 'a' (note that only 'b' was removed)

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:104

undo() ​

undo(): null | StackItem

Undo last changes on type.

Returns ​

null | StackItem

Returns StackItem if a change was applied

Source ​

node_modules/.pnpm/yjs@13.6.10/node_modules/yjs/dist/src/utils/UndoManager.d.ts:110

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