UndoRedoHandler

Classes

UndoRedoHandler

Handler for performing operations with redoing and undoing of actions.

Remarks

the TextWhizz is used as a text engine.

Implements

• IUndoRedoHandler

Constructors

Constructor

new UndoRedoHandler(tw): UndoRedoHandler;

Parameters

Parameter	Type
tw	ITextWhizzHolder

Returns

UndoRedoHandler

Accessors

canRedo

Get Signature

get canRedo(): boolean;

Indicates if the action can be redone.

Returns

boolean

Indicates if the action can be redone.

Implementation of

IUndoRedoHandler.canRedo

canUndo

Get Signature

get canUndo(): boolean;

Indicates if the action can be undone.

Returns

boolean

Indicates if the action can be undone.

Implementation of

IUndoRedoHandler.canUndo

Methods

clear()

clear(): void;

Clears saving actions.

Returns

void

Implementation of

IUndoRedoHandler.clear

getSelection()

getSelection(): ITextRange;

Returns selected text.

Returns

ITextRange

Implementation of

IUndoRedoHandler.getSelection

pause()

pause(): void;

Pauses saving actions.

Returns

void

Remarks

can be used to combine multiple actions into one.

Implementation of

IUndoRedoHandler.pause

redo()

redo(): void;

Redoes an action.

Returns

void

Implementation of

IUndoRedoHandler.redo

resume()

resume(): void;

Resumes saving actions.

Returns

void

Remarks

can be used to combine multiple actions into one.

Implementation of

IUndoRedoHandler.resume

undo()

undo(): void;

Undoes an action.

Returns

void

Implementation of

IUndoRedoHandler.undo