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Undoable command [message #1781878]

Wed, 14 February 2018 08:46

Jim 20100

Messages: 69
Registered: June 2016

Member

Hello,

How can we prevent a Set or Remove Command to be undoable?

Rgds

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Re: Undoable command [message #1781947 is a reply to message #1781878]

Wed, 14 February 2018 23:00

Christian Damus

Messages: 1270
Registered: July 2009
Location: Canada

Senior Member

Hi,

You could, in your editing domain or item-provider, wrap a SetCommand or a RemoveCommand in a CommandWrapper subclass that overrides canUndo to return false. Note that this will effectively invalidate all commands that were previously executed on the stack, so that the stack is effectively flushed and starts over.

HTH,
Christian

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Re: Undoable command [message #1782023 is a reply to message #1781947]

Fri, 16 February 2018 06:29

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

Or, more fine-grained, each item provider acts as a factory for creating the commands, so you can specialize the creation of any specific command for any specific object type.

Ed Merks
Professional Support: https://www.macromodeling.com/

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