[kepler-dev] text area undo/redo

Chad Berkley berkley at nceas.ucsb.edu
Thu Mar 27 11:02:49 PDT 2008

Sounds like a great change to me.  Christopher, any objections?


ben leinfelder wrote:
> Hi all,
> There's been a request to add an "undo" feature when editing scripts  
> in the RExpression actor.  See http://bugzilla.ecoinformatics.org/show_bug.cgi?id=3185
> Locally, I have implemented an UndoableEditListener for the JTextArea  
> that is used in ptolemy.gui.Query along with some supporting inner  
> classes to facilitate the undoing and redoing of text edits.  This  
> change would cascade to all actors when editing their parameters.   
> While it seems like a useful feature to provide, it is in a ptII class  
> and therefore should probably be reviewed by the larger community.
> I've used the standard Ctrl+Z and Ctrl+Y shortcut mappings for undo  
> and redo respectively.  And yes, "Ctrl" translates to "open apple/ 
> command" key on the Mac.
> Does anyone object to including this change?
> Thanks,
> -ben
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