Class UndoManager

constructor

• new UndoManager(): UndoManager

• Returns UndoManager

hasRedo

hasUndo

isClean

lastDeltas

mark

markClean

selections

add

• add(delta: Delta, allowMerge: boolean, session?: EditSession): void

• Provides a means for implementing your own undo manager. options has one property, args, an [[Array Array]], with two elements:

  • args[0] is an array of deltas
  • args[1] is the document to associate with

  Parameters

  • delta: Delta
  • allowMerge: boolean
  • Optionalsession: EditSession

  Returns void

addSelection

• addSelection(selection: any, rev?: number): void

• Parameters

  • selection: any
  • Optionalrev: number

  Returns void

addSession

• addSession(session: EditSession): void

• Parameters

  • session: EditSession

  Returns void

bookmark

• bookmark(rev?: number): void

• Marks the current status clean

  Parameters

  • Optionalrev: number

  Returns void

canRedo

• canRedo(): boolean

• Returns true if there are redo operations left to perform.

  Returns boolean

canUndo

• canUndo(): boolean

• Returns true if there are undo operations left to perform.

  Returns boolean

fromJSON

• fromJSON(json: object): void

• Takes in an object which was returned from the toJSON method above, and resets the current undoManager instance to use the previously exported instance state.

  Parameters

  • json: object

  Returns void

getChangedLines

• getChangedLines(from: number, to?: number): void

• Parameters

  • from: number
  • Optionalto: number

  Returns void

getChangedRanges

• getChangedRanges(from: number, to?: number): void

• Parameters

  • from: number
  • Optionalto: number

  Returns void

getDeltas

• getDeltas(from: number, to?: number): Delta[]

• Parameters

  • from: number
  • Optionalto: number

  Returns Delta[]

getRevision

• getRevision(): number

• Returns number

getSelection

• getSelection(rev: number, after?: boolean): { rev: number; value: string }

• Parameters

  • rev: number
  • Optionalafter: boolean

  Returns { rev: number; value: string }

isAtBookmark

• isAtBookmark(): boolean

• Returns if the current status is clean

  Returns boolean

markIgnored

• markIgnored(from: number, to?: number): void

• Parameters

  • from: number
  • Optionalto: number

  Returns void

redo

• redo(session: EditSession, dontSelect?: boolean): void

• [Perform a redo operation on the document, reimplementing the last change.]{: #UndoManager.redo}

  Parameters

  • session: EditSession
  • OptionaldontSelect: boolean

  Returns void

reset

• reset(): void

• Destroys the stack of undo and redo redo operations.

  Returns void

startNewGroup

• startNewGroup(): any

• Returns any

toJSON

• toJSON(): object

• Returns an object which can be safely stringified into JSON

  Returns object

undo

• undo(session: EditSession, dontSelect?: boolean): void

• [Perform an undo operation on the document, reverting the last change.]{: #UndoManager.undo}

  Parameters

  • session: EditSession
  • OptionaldontSelect: boolean

  Returns void