Class UndoRedoStack

Index

Constructors

Accessors

canRedo canUndo redoCount undoCount

Methods

clear push redo undo

Constructors

constructor

new UndoRedoStack(options?: UndoRedoOptions): UndoRedoStack
Parameters
- Optionaloptions: UndoRedoOptions
Returns UndoRedoStack
- Defined in core/src/undo-redo/undo-redo.ts:22

Accessors

canRedo

get canRedo(): boolean
Check if redo is available.

Returns boolean
- Defined in core/src/undo-redo/undo-redo.ts:65

canUndo

get canUndo(): boolean
Check if undo is available.

Returns boolean
- Defined in core/src/undo-redo/undo-redo.ts:60

redoCount

get redoCount(): number
Number of redo steps available.

Returns number
- Defined in core/src/undo-redo/undo-redo.ts:75

undoCount

get undoCount(): number
Number of undo steps available.

Returns number
- Defined in core/src/undo-redo/undo-redo.ts:70

Methods

clear

clear(): void
Clear both stacks.

Returns void
- Defined in core/src/undo-redo/undo-redo.ts:80

push

push(ugm: UGM): void
Record the current UGM state before a mutation.
Parameters
- ugm: UGM
Returns void
- Defined in core/src/undo-redo/undo-redo.ts:27

redo

redo(currentUgm: UGM): UGM | null
Redo: restore the next state. Returns the restored UGM or null.
Parameters
- currentUgm: UGM
Returns UGM | null
- Defined in core/src/undo-redo/undo-redo.ts:49

undo

undo(currentUgm: UGM): UGM | null
Undo: restore the previous state. Returns the restored UGM or null.
Parameters
- currentUgm: UGM
Returns UGM | null
- Defined in core/src/undo-redo/undo-redo.ts:38