Manipulate the undo stack

Manipulate the undo stack

Posted by: achort on 15 November 2021, 4:42 am EST

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  achort

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  Posted 15 November 2021, 4:42 am EST

  Hi,

  I have a question regarding the undo/redo stack.
  
  Some context: we are adding multiple sheets to a single SpreadJs instance but only showing one at a time. That is: we hide all sheets except the current one, users can change the current sheet through external control.

  I was wondering if there is a way to filter the undo/redo stack to only show the items concerning a particular sheet or manipulate it in any way.

  All we have found so far is that you can clear it.

  Thank you.

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  avinash.pathak

  

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  Posted 15 November 2021, 9:27 pm EST

  Hey,

  getUndoStack Method and getRedoStack Method returns an object that includes sheetName. You can filter the undoStack/redoStack(stack returned being array) by sheetName.

  getRedoStack(): https://www.grapecity.com/spreadjs/docs/v14/online/SpreadJS~GC.Spread.Commands.UndoManager~getRedoStack.html

  getUndoStack(): https://www.grapecity.com/spreadjs/docs/v14/online/SpreadJS~GC.Spread.Commands.UndoManager~getUndoStack.html

  Thanks.

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  achort

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  Posted 17 November 2021, 6:30 am EST

  Hi,

  Yes, I have inspected the UndoManager class and noticed those two methods.
  
  However, I don’t see any method to modify the stacks (ie: setUndoStack and setRedoStack).

  Is there a way to remove a particular item from the stack so it does not appear in the undo menu of the Designer?

  Thank you.

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  avinash.pathak

  

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  Posted 17 November 2021, 4:43 pm EST

  Hi,

  We are sorry but we could change the built-in undo stack. We could only clear the undo stack using the clear method. We are sorry for the inconvenience.

  API references:

  clear: https://www.grapecity.com/spreadjs/docs/v14/online/SpreadJS~GC.Spread.Commands.UndoManager~clear.html

  Regards
  
  Avinash