Clarify documentation on Undo/Redo

[wojciechczerniak]

@dmt0 commented on Fri Oct 19 2018

Description

From https://handsontable.com/docs/6.1.0/UndoRedo.html :

Note, that not all actions are currently undo-able. The UndoRedo plugin is enabled by default.

The question is, what is and what is not undoable as of now?

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@AMBudnik commented on Mon Oct 22 2018

You're right, we need to check what's going on in the code or try it out to know.

Changes that can be undone

• editing
• insert row/column
• remove row/column
• filtering

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@dmt0 commented on Wed Oct 31 2018

Just looked at the code. Add to the list:

• cell alignment
• row move
• cells merge/unmerge

https://github.com/handsontable/handsontable/blob/master/src/plugins/undoRedo/undoRedo.js

[AMBudnik]

There's also a problem with the fact that the undoRedo is not accessible via getPlugin. Like the situation with clear() method.

There is already one method called clear to erase the content. So when we call instance.undo() we call the method from the undoRedo plugin. But when we call instance.clear() we call clear() from core, not clear() from the undoRedo plugin.

As a workaround, you can clear the doneActions array https://jsfiddle.net/a7d83bk9/ or access clear via plugin instance.undoRedo.clear(). However, IMO all those methods should be accessible via

instance.getPlugin('undoRedo').undo()
instance.getPlugin('undoRedo').clear()

and so on..

[AMBudnik]

This topic is still accurate. We could mention supported undo/redo operations.