dhtmlxgrid_undo.js required

Extension allows undo|redo functionality. All edit actions made by user will be saved in unlimited undo history. However, modifications caused by API calls will not be stored in the history.

There are methods responsible for enabling/disabling undo|redo functionality in the grid:

        grid.enableUndoRedo();
        grid.disableUndoRedo();

The user can do undo|redo from script in the following way:

        grid.doUndo();
        grid.doRedo();

The following methods can be used to get length of available Undo|Redo operations in the grid:

     grid.getUndo().length;
     grid.getRedo().length;